TWI623178B - Motor unit, power simulator, torque test device, rotational torque test device, linear actuator and excitation device - Google Patents

Abstract

The present invention includes: a cylindrical body frame; a substantially flat plate-shaped first bracket attached to one end portion in the axial direction of the body frame; a substantially flat plate-shaped second bracket attached to the other end portion in the axial direction of the body frame; and Through the hollow portion of the main body frame, the first bracket and the second bracket are penetrated, and a driving shaft supported by bearings provided on the first bracket and the second bracket is rotatably supported. The bracket protrudes to the outside to constitute a first output shaft that outputs driving force to the outside, and the other end portion of the drive shaft protrudes from the second bracket to the outside to constitute a second output shaft that outputs driving force to the outside.

Description

Motor unit, power simulator, torque test device, rotational torque test device, linear actuator and excitation device

The invention relates to a dual-shaft output motor, a motor unit connected in series to a plurality of motors including a dual-shaft output motor, a torque test device having a dual-axis output servo motor, a rotational torque test device, a tire test device, a linear actuator, and Excitation device.

The inventors have adopted a servo motor type fatigue test device and vibration test device that can apply high frequency repeated loads of several tens to several 100 Hz by using an ultra-low inertia servo motor that greatly reduces the inertia of the previous servo motor. (For example, Patent Document 1).

The above-mentioned servo motor type test device solves many serious problems existing in the hydraulic test devices in the past (for example, large-scale oil pressure supply equipment such as oil tanks and oil pressure pipes need to be installed, and a large amount of hydraulic oil needs to be replaced regularly. The leakage caused the working environment and soil pollution), so the scope of application has been expanded rapidly.

In order to further expand the application range of the servo motor type test device, it is required to maintain the high acceleration characteristics of the ultra-low inertia servo motor and higher output.

In addition, because of the manufacturing cost of the servo motor type test device, The proportion of cost is large, so it is required to use a servo motor to test a plurality of test bodies simultaneously.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] International Publication No. 2008/133187

However, when simply increasing the output of the servo motor, since the strength of each part of the servo motor needs to be increased, the size is increased and the weight is increased beyond the increased portion of the output. In addition, as a result, the output ratio of the inertia torque of the servo motor (the ratio of the inertia torque to the output of the servo motor) is increased, so that the acceleration characteristics (including the jump) are reduced, and the frequency range of the variable load that can be output is reduced. problem.

In addition, conventional servo motors have only one output shaft, so in order to test multiple test objects at the same time, it is necessary to set a gear mechanism that distributes power. Therefore, there are problems of increased friction resistance and large test equipment. .

According to an embodiment of the present invention, a dual-axis output servo motor is provided, which includes: a cylindrical body frame; a substantially flat plate-shaped first bracket that is mounted on one end portion of the body frame in the axial direction; and a roughly flat plate. A second bracket in the shape of a body is mounted on the other end portion in the axial direction of the main body frame; and a drive shaft passes through the hollow portion of the main body frame and penetrates the first and second brackets, and is provided in the first A bracket and a second bracket are rotatably supported by bearings, and one end of the driving shaft is protruded from the first bracket to the outside, as an output driving force to The outer first output shaft has the other end protruding from the second bracket to the outside as the second output shaft.

It is also possible to form a first mounting surface on the first bracket and the second bracket, which are provided with tap holes for mounting a biaxial output servo motor on opposite sides of the surfaces facing each other.

It is also possible to form a second mounting surface perpendicular to the first mounting surface on the first bracket and the second bracket, which is provided with a plug hole for mounting a dual-axis output servo motor.

A rotary encoder may be provided on at least one of the first bracket and the second bracket to detect the rotational position of the drive shaft.

According to an embodiment of the present invention, there is provided a servo motor unit including: a cylindrical body frame; a load-side bracket attached to one end portion in the axial direction of the body frame; and an anti-load-side bracket attached to The other end of the body frame in the axial direction; and the drive shaft, which passes through the hollow portion of the body frame, penetrates the first bracket and the second bracket, and is provided with bearings on the load-side bracket and the counter-load-side bracket, respectively. It is supported freely and equipped with a second servo motor, which constitutes only one end of the drive shaft that protrudes from the load-side bracket to the outside and outputs driving force to the outside; the above-mentioned two-shaft output servo motor; connection A component that connects a load-side bracket and a second bracket at a specified interval; a coupler that connects an output shaft of a second servo motor and a second output shaft of a dual-axis output servo motor; and a drive control unit It drives the second servo motor and the dual-axis output servo motor in the same phase.

The above-mentioned servo motor unit may also be provided with the above-mentioned dual-axis output servo motor. A rotary encoder for detecting the rotation position of the drive shaft is installed on either of the load-side bracket and the counter-load-side bracket. The drive control unit is based on the rotation code. The signal output from the controller controls the driving of the second servo motor and the dual-axis output servo motor.

The above-mentioned servo motor unit can also be constituted with the above-mentioned dual-axis output servo horse. The drive control unit controls the driving of the second servo motor and the dual-axis output servo motor according to a signal output from one of the rotary encoders.

According to an embodiment of the present invention, there is provided a rotational torque test device, which is provided with a first drive shaft that is mounted on one end of a workpiece and rotates around a designated rotation shaft; a second drive shaft that is Mount the other end of the workpiece and rotate around the rotation axis; a load imparting portion that supports the first drive shaft and rotationally drives the first drive shaft to impart a torque load to the workpiece; at least one first bearing The load imparting portion is supported to rotate freely around the rotation axis; the rotation driving portion drives the first driving shaft and the load imparting portion to rotate in the same phase; and a torque sensor detects the torque load by rotation The driving part rotates the workpiece via the first driving shaft and the second driving shaft, and the load imparting portion imparts a phase difference to the rotation of the first driving shaft and the second driving shaft to apply a load to the workpiece, and forms a load imparting portion. A frame is provided, which has a cylindrical shaft portion inserted into a first drive shaft. The shaft portion supports the frame by a first bearing and supports the first drive shaft. A torque sensor is provided. Attached to the insertion portion of the shaft portion of the drive shaft and the first detecting portion of the torque load, the load applying unit includes the means of a servomotor.

The rotational torque test device may be configured to include a driving power supply unit that is disposed outside the load applying unit and supplies driving power to the servo motor unit; and a driving power transmission path that transmits driving from the driving power supply unit to the servo motor unit. Electric power; a torque signal processing unit that is disposed outside the load imparting unit and processes the torque signal output by the torque sensor; and a torque signal transmission path that processes the torque signal from the torque sensor to the torque signal The drive power transmission path is transmitted by the unit, and the drive power transmission path includes: an external drive power transmission path that is disposed outside the load applying unit; and an internal drive power transmission path that is disposed inside the load applying unit, together with the load applying unit. Rotation; and a first sliding ring portion, which is connected to an external driving power transmission path and Internal driving power transmission path, the torque signal transmission path includes: an external torque signal transmission path, which is arranged outside the load imparting section; and an internal torque signal transmission path, which is arranged inside the load imparting section, and communicates with the load. The imparting portion rotates together; and a second slip ring portion that connects the external torque signal transmission path and the internal torque signal transmission path, and the second slip ring portion is disposed separately from the first slip ring portion.

The rotation driving unit may be configured to include: a second motor; and a driving force transmitting unit that transmits the driving force of the second motor to the load applying unit and the second driving shaft, and rotates in the same phase, and the driving force transmitting unit includes: The first driving force transmitting unit transmits the driving force of the second motor to the second driving shaft; and the second driving force transmitting unit transmits the driving force of the second motor to the load applying unit.

The first driving force transmission unit and the second driving force transmission unit may be provided with an endless belt mechanism, respectively. The first driving force transmission unit includes a third driving shaft, which is arranged in parallel with the rotation shaft and is driven by the second motor. A first driven pulley which is coaxially fixed to the third drive shaft; a first driven pulley which is coaxially fixed to the load imparting portion; and a first endless belt which is hung on the first drive pulley and the first A driven pulley, the second driving force transmission unit includes: a fourth driving shaft, which is coaxially connected to the third driving shaft; a second driving pulley, which is fixed to the fourth driving shaft; a second driven pulley, which is fixed On the first driving shaft; and the second endless belt, which is hung on the second driving pulley and the second driven pulley.

According to an embodiment of the present invention, there is provided a torque test device that applies torque to an input-output shaft of a test body of a power transmission device, and includes: a first driving unit connected to an input shaft of the test body ; And a second drive unit, which is connected to the output shaft of the test object, the first drive unit and the second drive unit are provided with the above-mentioned servo motor unit; a reducer, which will The rotation of the drive shaft of the servo motor unit is decelerated; the chuck is the input or output shaft of the test object, and transmits the output of the reducer to the input or output shaft of the test object; the torque sensor, It transmits the output of the reducer to the chuck and detects the torque output by the reducer; and the rotation meter detects the number of rotations of the chuck.

It can also be composed of: a mandrel that connects the torque sensor and the chuck; and a bearing unit that supports the mandrel in a freely rotatable manner. The reducer includes: a gear box; a bearing; The bearing is supported by the gearbox, and includes the gear mechanism of the reducer that transmits the driving force of the servo motor to the test object, the torque sensor, and the load of the power transmission shaft of the spindle, and the gear mechanism of the spindle and the reducer support.

According to an embodiment of the present invention, the torque test device can also be configured to perform the test of the first test object and the second test object at the same time, and includes: the above-mentioned dual-axis output servo motor; and a first drive transmission unit, which is The rotation of the first output shaft is transmitted to one end portion of the first test body; the first reaction force portion is used to fix the other end portion of the first test body; the second drive transmission portion is used to transmit the second output shaft The rotation is transmitted to one end portion of the second test object; and a second reaction force portion that fixes the other end portion of the second test object. The first drive transmission portion and the second drive transmission portion are provided with a chuck device. One end of the first or second test body is installed, and the first reaction force part and the second reaction force part are provided with a chuck device, which is used to install the other end of the first test body or the second test body It also has a torque sensor that detects the torque applied to the first or second test subject.

The first drive transmission unit and the second drive transmission unit may also be provided with: a speed reducer that slows down the rotation of the first output shaft or the second output shaft; and a rotary encoder that detects the rotation of the output shaft of the speed reducer .

According to an embodiment of the present invention, there is provided a torque test device including: a frame; the above-mentioned servo motor unit, which is fixed to the frame; a servo motor; a reduction mechanism, which decelerates the rotation of the servo motor; a coupler, which is The input shaft of the reduction mechanism is connected to the drive shaft of the servo motor; the first holding portion is fixed to the output shaft of the reduction mechanism to hold one end of the test body; and the second holding portion is fixed to the frame, Used to hold the other end of the subject.

According to an embodiment of the present invention, there is provided a linear actuator including: the above-mentioned servo motor unit; a feed screw; a coupler, which is a drive shaft connecting the feed screw and the servo motor unit; and a nut, which is Combined with the feed screw; linear guide, which restricts the movement direction of the nut only to the axial direction of the feed screw; and support plate, which is a fixed servo motor and linear guide.

According to an embodiment of the present invention, there is provided an excitation device, comprising: a pedestal for mounting a workpiece; and a first actuator capable of exciting the pedestal in a first direction. The actuator includes: the above-mentioned servo motor unit; and a ball screw mechanism, which converts the rotational movement of the servo motor unit into a translation movement in the first direction or the second direction.

According to an embodiment of the present invention, there is provided an excitation device including: a pedestal for mounting a workpiece; a first actuator capable of exciting the pedestal in a first direction; and a second actuator, It is used to excite the pedestal in a second direction orthogonal to the first direction; the first connection means is to slidably connect the pedestal to the first actuator in the second direction; and the second connection means is to The base is slidably connected to the second actuator in the first direction. The first actuator and the second actuator are respectively provided with the above-mentioned servo motor unit and a ball screw mechanism. The rotational motion is transformed into a translation motion in a first direction or a second direction.

According to an embodiment of the present invention, there is provided an excitation device, comprising: a pedestal for mounting a workpiece; a first actuator capable of exciting the pedestal in a first direction; and a second actuation Device for exciting the pedestal in a second direction orthogonal to the first direction; third actuator for exciting the pedestal in a third direction perpendicular to both the first direction and the second direction ; The first connection means, which is to slidably connect the pedestal to the first actuator in the second direction and the third direction; the second connection means, which connects the pedestal to the second actuator in the first direction and The third direction is slidably connected; and the third connection means is configured to slidably connect the pedestal to the third actuator in the first direction and the second direction, the first actuator, the second actuator, and the third The actuators are respectively provided with the above-mentioned servo motor unit; and a ball screw mechanism, which converts the rotational movement of the servo motor unit into a translation movement in the first direction, the second direction, or the third direction.

According to an embodiment of the present invention, there is provided a torque test device including: a first servo motor; a torque imparting unit having: a cylindrical casing; a second servo motor fixed in the casing; and A speed reducer comprising: a frame fixed in the casing and an input shaft connected to the output shaft of the servo motor; and an output shaft that decelerates the rotation of the input shaft to output and protrudes from the casing; a first rotating shaft It is to install the subject and connect one end to the output shaft of the aforementioned reducer; the second rotating shaft is to connect one end to the output shaft of the motor; the first gear box is to have the aforementioned reduction The output shaft of the machine and the connection portion of the casing of the aforementioned torque imparting unit transmit gears the rotational movement of the output shaft and the casing by gears; and a second gear box having the other end portion connected to the first rotation shaft And the connecting portion of the other end portion of the second rotating shaft described above, the rotational movement of the first rotating shaft and the second rotating shaft is transmitted by gears.

According to the present invention, the power loss can be reduced compared with the past configuration in which the power cycle is performed by the belt mechanism for the power cycle through the first gear box and the second gear box. Torque testing device with lower operating cost.

According to an embodiment of the present invention, there is provided a power simulator including: an output shaft; a control unit that controls the rotation of the output shaft to generate a simulated power that simulates a specified power; a weighting unit that is configured from the control unit The indicated torque is applied to the output shaft to be supported freely; and the rotation driving unit is configured to rotate and drive the load applying unit at a rotation speed instructed from the control unit, and the weight applying unit is provided with a servo motor that connects its rotation shaft to the output shaft. .

According to the structure of the embodiment of the present invention, an electric power simulator is provided, which can accurately simulate the torque fluctuation of high-frequency components even at high revolutions.

By using both ends of the drive shaft as the first output shaft and the second output shaft, the output can be distributed without the need for additional power distribution means such as a gear mechanism to prevent the increase in friction resistance and testing caused by the additional power distribution means. Large-scale installation. In addition, with this configuration, one of the first output shaft and the second output shaft can be connected to the output shafts of other servo motors to synthesize the output, which can suppress the increase in the size of the servo motor and the resulting increase in inertia moment. The acceleration characteristics are reduced and high output is achieved.

1.1000‧‧‧rotation torque test device

1a, 1b, 100X‧‧‧ Power Simulator

10‧‧‧stand

100, 1100‧‧‧load imparting department

100A, 100B, 100B ’, 100C, 100C ’, 100H, 3100, 3200, 3300, 3400, 4000‧‧‧ Torque test device

100a, 131‧‧‧chassis

100E‧‧‧Test Device

100D‧‧‧Tire test device

100D‧‧‧Tire wear test device

100F, 100G‧‧‧Power absorption endurance test device

11‧‧‧ Lower-level substrate

11a, 11b, 11c, 150A3b, 150A4b, 3114a, 5416‧‧‧ bearings

110‧‧‧Motor Containment Department

7110, 1011, 1012, 1013, 1014, 3110b‧‧‧ base

111‧‧‧Fixed lever

1172‧‧‧Narrow section

1174‧‧‧Strain gauge

1180, 1280‧‧‧ Workpiece mounting section

1190, 1200‧‧‧Driving Force Transmission Department

12‧‧‧upper substrate

12a, 12b, 12c, 12d, 12e, 4230, 4252

7121‧‧‧Servo motor for workpiece rotation

121, 180, 180b, 180c ‧‧‧ pulley department

121a, 132a, 133b, 150A2a, 150A2b, 150B2a, 150B2b, DG1a, DG1b, DG2a, DG2b, W1b, W2b, TRb, TRc, To, 3113a, O, 4228‧‧‧ output shaft

120, 130, 140, 1120‧‧‧ Shaft

122‧‧‧ Spindle

7123, 1193, 1244 ‧‧‧ driven pulley

123a, 144, 145, 1170‧‧‧ axis

7124‧‧‧Endless belt

13‧‧‧ support wall

8013, 14, 143, 143A, 143B1, 143B2, 143C, 1220‧‧‧ relay shaft

7130‧‧‧Torque imparting unit

131a‧‧‧tubular section

132‧‧‧Servo motor unit for torque application

133, 160, 3113, 4220‧‧‧ reducer

133a, DG1c, TRa, TR1a, TR2a, W1a, W2a, I‧‧‧ input shaft

134, 150C, 151, 151B, 151C, 151D, 7152, 153, 153B, 153C, 153D, 154, 5260, 5460‧‧‧ couplers

1402, S‧‧‧ support frame

1403‧‧‧Brush Department

141, 141B, 141C, 141D‧‧‧The first gear box

141a1, 141a2, 141b1, 141b2, 142a, 142b, 141Ba1, 141Ba2, 141Bb1, 141Bb2, 143Bc, 141Ca1, 141Ca2, 141Cb1, 141Cb2, 143Cc, 141Da1, 141Da2, 141Db1, 141Db2, 142Da, 142Db ...

141a3, 141b3, 142a1, 142b1, 141Ba, 141Bb, 141Bc, 141Ca, 141Cb, 141Cc‧‧‧ Gear

141i, 142i‧‧‧Intermediate gear

142, 142B1, 142B2, 142C, 142D‧‧‧Second Gear Box

144B1, 144B2‧‧‧ bevel gear box

15‧‧‧Anti-vibration bracket

150, 150X, 150Y, 150Z‧‧‧Servo motor unit

150A‧‧‧Dual-axis output servo motor

150A1, 150B1‧‧‧‧Frame

150A2a‧‧‧First output shaft

150A2b‧‧‧Second output shaft

150A3‧‧‧First bracket

150A3t, 150A4t, 150B3t, 150B4t‧‧‧ plug hole

150A4‧‧‧Second bracket

150A6‧‧‧pipe connector

150B‧‧‧Servo Motor

150B3‧‧‧Load side bracket

150B4‧‧‧Anti-load side bracket

150D‧‧‧Joint flange

150D1‧‧‧Carcass

150D2‧‧‧ flange

8160‧‧‧Alignment control mechanism

7160, 172, 172a, 172b, 172c, 3117, 4420‧‧‧torque sensors

161‧‧‧Tire load adjustment section

8162‧‧‧Slip angle adjustment section

162‧‧‧Mounting flange

163‧‧‧ camber adjustment unit

164‧‧‧traverse device

170, 1170‧‧‧ connecting shaft

173‧‧‧Mounting Department

20, 30, 40, 123, 124, 1020, 1030, 1040, 1210, 1230, 1240, 4460, 5216‧‧‧bearing department

3110, 3210, 3310, 3410 ‧‧‧ First drive unit

3110a‧‧‧Body

3111‧‧‧Activity board

3114‧‧‧carton

3114b, 4210, 4410, 5222, 5422‧‧‧ frames

3115, 4440‧‧‧ mandrel

3116, 3126, 4260, 4480 ‧‧‧ chuck device

3119c‧‧‧ Brush holding frame

3120, 3220, 3320, 3420‧‧‧Second drive unit

320‧‧‧Waveform Generation Unit

3230, 3330, 3430‧‧‧ Third drive unit

330‧‧‧Servo Motor Drive Unit

340‧‧‧Frequency conversion motor drive unit

3440‧‧‧Fourth drive unit

350, 1350‧‧‧torque measurement unit

360‧‧‧revolution measurement unit

370‧‧‧setting unit

4100‧‧‧Fixed base

4200‧‧‧Driver

4200A, 4200B‧‧‧Drive Transmission Department

4212, 5242, 5438b‧‧‧ floor

4212‧‧‧ Reinforcing board

4214, 2414 ‧ ‧ ‧ vertical plate

4216, 2416‧‧‧ Ribs

4222‧‧‧Fuel cup

4224‧‧‧Input side flange plate

4400A‧‧‧First reaction force

4400B‧‧‧Second reaction force

4412‧‧‧Chassis

446a, 4214a, 5246a ‧‧‧ opening

50, 60, 1050, 1060, 1400‧‧‧Slip ring

5000‧‧‧Vibration test device (excitation device)

5002‧‧‧device base

5002a‧‧‧Hollow

51, 1401, 3119a‧‧‧Slip ring

51r‧‧‧electrode ring

5100‧‧‧Platform

52‧‧‧brush holder

5200‧‧‧First actuator

5202, 5302, 5402‧‧‧ substrate

5210, 5410‧‧‧Drive mechanism

5216a, 5216b‧‧‧Angular contact ball bearings

5216c‧‧‧bearing pressing plate

5217‧‧‧ Collar

5218、5418‧‧‧ Ball Screw

5218a‧‧‧Screw

5219, 5419‧‧‧ball nut

5220, 5320, 5420‧‧‧Vibration Tester

5222a, 5422a‧‧‧Beam

5222b, 5422b, 5432b‧‧‧ Top plate

5230, 5430‧‧‧ Connected institutions

5232‧‧‧nut guide

5231, 5431‧‧‧ intermediate carrier

5231a‧‧‧Y-axis rotor block

5231b, 5433‧‧‧Z-axis rotor block

5233, 5431a‧‧‧ X-axis rotor block

5234, 5435‧‧‧‧ Y-axis orbit

5235, 5437‧‧‧‧Z axis orbit

5236‧‧‧Control block

5237, 5434‧‧‧ X-axis orbit

5238‧‧‧Rotor block mounting member

5240‧‧‧Support

5244, 5442‧‧‧bearing support plate

5248‧‧‧ rib

5251‧‧‧ Proximity sensor

5252‧‧‧Testing board

5253‧‧‧Sensor support plate

53, 3119b‧‧‧ Brush

5300‧‧‧Second actuator

5400‧‧‧Third actuator

5402a‧‧‧open

5432‧‧‧Event Framework

5432a‧‧‧Frame

5432c‧‧‧ sidewall

5438‧‧‧Rotor block mounting member

5238a‧‧‧side

5438a‧‧‧Side

5438c‧‧‧The first rib

5438d‧‧‧Second rib

5443‧‧‧Link board

5446‧‧‧Motor support plate

70, 150B5, 1070, 4250‧‧‧rotary encoders

81, 150A2, 150B2, 152, 152X, 1212, 1232, 1242‧‧‧Drive shaft

90A, 90B‧‧‧‧Power absorption servo motor

91, 7122, 1091, 1191, 1234‧‧‧‧pulley

92, 1192, 1250, 4240‧‧‧ drive belts

A‧‧‧Adjuster

A1‧‧‧female thread

A2‧‧‧Male thread

A3‧‧‧nut

B, AB, 5216d‧‧‧bolt

C1, C3, C3a, C3b, C3c, C4, C5‧‧‧ control units

DG1, DG2‧‧‧ Differential gear

DR, 8010‧‧‧Rotating roller

OL‧‧‧Left output shaft

OP‧‧‧Rear output shaft

OR‧‧‧right output shaft

PS‧‧‧ Propeller shaft

S‧‧‧ support

T‧‧‧tire

T‧‧‧FR drive shaft

T1‧‧‧Ring gear

T1, T2, T3, T3a, T3b, T4

T2‧‧‧Starting motor

TC‧‧‧torque converter

W1, W2, TR, TR1, TR2‧‧‧ transmission units

The first figure is a side view of a dual-axis output servo motor according to an embodiment of the present invention.

The second figure is a side view of a servo motor unit according to an embodiment of the present invention.

The third figure is a longitudinal sectional view of a modified example of the servo motor unit according to the embodiment of the present invention.

The fourth figure is a side view of the rotational torque test device according to the first embodiment of the present invention.

The fifth figure is a vertical cross-sectional view near the load applying portion of the rotational torque test device according to the first embodiment of the present invention.

The sixth figure is a block diagram showing a schematic configuration of a control system of the rotational torque test device according to the first embodiment of the present invention.

The seventh figure is an external view of a power simulator according to a modification of the first embodiment of the present invention.

The eighth figure is an external view of a power simulator according to a modification of the first embodiment of the present invention.

The ninth figure is a side view of a test device including a power simulator according to a modification of the first embodiment of the present invention.

The tenth figure is a partially enlarged view of a test device including a power simulator according to a modification of the first embodiment of the present invention.

The eleventh figure is a top view of a rotational torque test device according to a second embodiment of the present invention.

The twelfth figure is a side view of a rotational torque test device according to a second embodiment of the present invention.

The thirteenth figure is a longitudinal sectional view of the vicinity of the load applying portion of the rotational torque test device according to the second embodiment of the present invention.

Fourteenth figure is a top view and a side view of a torque test device according to a third embodiment of the present invention.

Fifteenth figure is a side sectional view of a torque applying portion of a torque test device according to a third embodiment of the present invention.

The sixteenth figure is a top view of a torque testing device according to a fourth embodiment of the present invention.

The seventeenth figure is a top view of a torque testing device according to a fifth embodiment of the present invention.

The eighteenth figure is a top view of a torque testing device according to a sixth embodiment of the present invention.

The nineteenth figure is an external view of a rotational torque test device according to a seventh embodiment of the present invention.

The twentieth figure is an external view of a rotational torque test device according to an eighth embodiment of the present invention.

The twenty-first figure is a top view of a tire wear test apparatus according to a ninth embodiment of the present invention.

The twenty-second figure is an external view of a tire testing device according to a tenth embodiment of the present invention.

The twenty-third figure is an external view of a tire testing device according to a tenth embodiment of the present invention.

The twenty-fourth figure is an external view of a power absorption endurance test device for an FR transmission according to an eleventh embodiment of the present invention.

The twenty-fifth figure is an external view of a power absorption endurance test device for an FR transmission according to a twelfth embodiment of the present invention.

The twenty-sixth figure is a side view of a torque test device according to a thirteenth embodiment of the present invention.

The twenty-seventh figure is a side view of the first driving portion of the thirteenth embodiment of the present invention.

The twenty-eighth figure is a top view of a torque test device according to a first modification of the thirteenth embodiment of the present invention.

The twenty-ninth figure is a top view of a torque testing device according to a second modification of the thirteenth embodiment of the present invention.

Figure 30 is a top view of a torque testing device according to a third modification of the thirteenth embodiment of the present invention.

The thirty-first figure is a side view of a torque test device according to a fourteenth embodiment of the present invention.

The thirty-second figure is an enlarged view of a driving unit according to a fourteenth embodiment of the present invention.

The thirty-third figure is a top view of a vibration testing apparatus according to a fifteenth embodiment of the present invention.

The thirty-fourth figure is a side view of the first actuator according to the fifteenth embodiment of the present invention as viewed from the Y-axis direction.

The thirty-fifth figure is a top view of a first actuator according to a fifteenth embodiment of the present invention.

The thirty-sixth figure is a side view of the pedestal and the third actuator of the fifteenth embodiment of the present invention viewed from the X-axis direction.

The thirty-seventh figure is a pedestal and the third embodiment of the fifteenth embodiment of the present invention viewed from the Y-axis direction. Side view of the actuator.

The thirty-eighth figure is a block diagram of a control system in a vibration test apparatus according to a fifteenth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment)

First, a dual-axis output servo motor 150A according to an embodiment of the present invention will be described. The first figure is a side view of a dual-axis output servo motor 150A. The dual-axis output servo motor 150A is an ultra-low inertia servo motor with high output (rated output 37kW) with two output shafts 150A2a and 150A2b. The dual-axis output servo motor 150A includes a main body frame 150A1, a drive shaft 150A2, a first bracket 150A3, and a second bracket 150A4.

The main body frame 150A1 is a substantially cylindrical frame, and a stator (not shown) having a coil is provided on an inner periphery thereof. A first bracket 150A3 and a second bracket 150A4 are respectively mounted on both ends of the main body frame 150A1 in the axial direction so as to block the opening of the main body frame 150A1. A motor case is formed by the body frame 150A1, the first bracket 150A3, and the second bracket 150A4. The first bracket 150A3 and the second bracket 150A4 are respectively provided with bearings 150A3b and 150A4b that rotatably support the drive shaft 150A2. A rotor (not shown) is provided on the outer periphery of the central portion of the drive shaft 150A2 in the longitudinal direction, and a rotational force is applied to the drive shaft 150A2 by the interaction of the rotating magnetic field generated by the stator and the rotor provided on the drive shaft 150A2.

One end portion 150A2a (the right end portion in the first figure) of the drive shaft 150A2 penetrates the first bracket 150A3, protrudes from the motor case to the outside, and becomes the output shaft 150A2a. In addition, the other end portion 150A2b of the drive shaft 150A2 penetrates through the second bracket 150A4 and protrudes from the motor case to the outside, so that It is the second output shaft 150A2b. A rotary encoder (not shown) for detecting rotation of the other end portion 150A2b of the drive shaft 150A2 is built in the second bracket 150A4.

In addition, under the first bracket 150A3 and the second bracket 150A4, a pair of plug holes 150A3t and 150A4t for fixing the two-axis output servo motor 150A are respectively provided. Conventional servo motors have a fixing plug hole extending in parallel with the drive shaft only on the mounting seat surface (right side surface of the first figure) of the bracket on the load side (the output shaft protruding side). For applications other than precision mechanical testing, it only needs to be fixed by the plug hole provided on the mounting seat surface of the load-side bracket, but it is especially a precision mechanical test that applies a high-frequency dynamic load of several 10Hz (for example, 20Hz) or more. In devices (such as fatigue test equipment and vibration test equipment), when a high-output servo motor with a rated output of about 10 kW or more is used, it is fixed only by the mounting seat surface of the bracket, and cannot be completely fixed in a direction perpendicular to the drive shaft. Servo motors can generate vibrations with minute amplitudes, such as several μm to several 10 μm, causing errors that cannot be ignored in the test results.

The inventors have performed vibration analysis and test results many times, and found that under each bracket, by adding two fixing plug holes extending in a direction perpendicular to the drive shaft at each of two places, it can be significant (for example, about one digit) Improve vibration noise. In addition to the mounting seat surface of the load-side brackets, plug holes are also provided under each bracket, and the servo motors are bolted using these plug holes to reduce vibration noise and allow more accurate mechanical tests. .

In addition, the servo motor 150A is constructed so that the rated output is up to 37kW, and the amount of heat generated during operation is large. The internally generated heat is radiated to the outside by water cooling. On the upper part of the main body frame 150A1, two pipe joints 150A6 are connected to external pipes for supplying and discharging cooling water.

This embodiment uses the above-mentioned two-axis output servo motor 150A connected in series. A servo motor unit 150 with a servo motor 150B having an output shaft 150B2a. The second figure is a side view of the servo motor unit 150 according to the embodiment of the present invention. The servo motor unit 150 includes one drive shaft 152.

In the following description of the servo motor unit 150, the side on which the drive shaft 152 protrudes (the right side in the second figure) is referred to as a load side, and the opposite side is referred to as an anti-load side. The dual-axis output servo motor 150A and servo motor 150B each generate a maximum torque of 350N‧m, and the inertia moment of the rotating part is suppressed below 10 ^-2 (kg‧m ² ). The rated output is 37kW. Inertial servo motor.

The servo motor 150B includes a main body frame 150B1, a drive shaft 150B2, a load-side bracket 150B3, a counter-load-side bracket 150B4, and a rotary encoder 150B5. The body frame 150B1 and the load-side bracket 150B3 are the same as the body frame 150A1 and the first bracket 150A3 of the dual-axis output servo motor 150A, and an external pipe for supplying and draining cooling water is provided on the upper portion of the body frame 150B1. The two pipe joints 150B6. The anti-load side bracket 150B4 is roughly the same structure as the second bracket 150A4 of the dual-axis output servo motor 150A, but does not have a built-in rotary encoder. Instead, the rotary encoder 150B5 is added to the anti-load side bracket as described later.架 150B4. In addition, a pair of plug holes 150B3t and 150B4t are also provided below the load-side bracket 150B3 and the counter-load-side bracket 150B4, respectively.

The load-side end portion 150B2a of the drive shaft 150B2 passes through the load-side bracket 150B3, and protrudes from the motor case to the outside to become the output shaft 150B2a. In addition, a rotary encoder 150B5 that detects the angular position of the drive shaft 150B2 is mounted on the mounting seat surface (left side of the second figure) of the counter load side bracket 150B4, and the other end portion 150B2b of the drive shaft 150B2 penetrates the counter load side bracket 150B4 and housed in a rotary encoder.

As shown in the second figure, the output shaft 150B2a of the servo motor 150B and the second output shaft 150A2b of the dual-axis output servo motor 150A are connected by a coupler 150C. In addition, the load-side bracket 150B3 of the servo motor 150B and the second bracket 150A4 of the dual-axis output servo motor 150A are connected by a predetermined interval with a connection flange 150D.

The connecting flange 150D includes a cylindrical body portion 150D1 and two flange portions 150D2 extending from the both ends in the axial direction of the body portion 150D1 to the outside in the radial direction. In each flange portion 150D2, a through hole for bolting is provided at a position corresponding to a plug hole provided on the mounting seat surface of the load-side bracket 150B3 and the second bracket 150A4, and is bolted to the load-side bracket. 150B3 and the second bracket 150A4.

In addition, the servo motor unit 150 is provided with two rotary encoders for detecting the angular position of the drive shaft 150B2 (the second bracket 150A4 built in the dual-axis output servo motor 150A and the counter load mounted on the servo motor 150B The rotary encoder 150B5 of the side bracket 150B4), but usually only one rotary encoder is used for driving control of the servo motor unit 150, and the other is used for maintenance and monitoring of the driving state.

For example, when performing vibration tests and endurance tests (rotational torque tests) of power transmission devices, high-speed (high-frequency) shaft torques with large fluctuations are required. As described above, in order to generate high-frequency and large-torque torque, a motor having a small inertia moment (inertia) of the rotor and a large capacity (high output) is required. In order to realize such a servo motor, it is necessary to make the rotor slim. However, when the rotor is made slender beyond a certain level, the rotor (rotating shaft) has a reduced rigidity, so that the bow-shaped warpage of the rotor is significant, and the motor cannot operate normally. Therefore, as shown in the conventional art, with a structure in which a pair of bearings supports the rotating shaft only at both ends, there is still a limit to increasing the capacity while maintaining a low moment of inertia.

In the servo motor unit 150 of this embodiment, the long rotor connected by the coupler 150C is supported by bearings at a total of 4 places at both end portions in the longitudinal direction and 2 places near the connection portion. Therefore, even if the rotor is elongated, It can still maintain high rigidity and operate stably, thereby generating high-frequency and large-torque torque that could not be achieved by servo motors in the past. For example, a single servo motor unit 150 (without load) can achieve an angular acceleration of 30,000 rad / s ² or more.

In addition, the servo motor unit 150 of this embodiment is configured by connecting two servo motors (two motor boxes and two rotating shafts), but as shown in the third figure, it can also be installed halfway in the length direction of a group of long motors. One or more bearings, and the drive shaft is supported at both ends and one or more of the way.

Next, the configuration of the rotational torque test device 1 according to the first embodiment of the present invention will be described. The fourth figure is a side view of the rotational torque test device 1 according to the first embodiment of the present invention. Rotational torque test device 1 is a device that uses a car clutch as the test subject T1 to perform a torque test, and rotates the test subject T1, and the input shaft and the output shaft of the test body T1 (such as the clutch cover and the clutch disc) ) A fixed or variable torque is applied between them. The rotational torque test device 1 includes a stand 10 that supports each part of the rotational torque test device 1; a load imparting portion 100 that rotates together with the subject T1 and applies a specified torque to the subject T1; and supports the load imparting in a freely rotatable manner The bearing sections 20, 30 and 40 of the section 100; the electrically connected sliding ring sections 50 and 60 inside and outside the load imparting section 100; a rotary encoder 70 that detects the number of revolutions of the load imparting section 100; and rotates with the set rotation direction and number of revolutions The inverter load motor 80 of the drive load applying section 100; the drive pulley 91 and the drive belt 92 (timing belt).

The gantry 10 includes a lower-stage substrate 11 and an upper-stage substrate 12 arranged side by side up and down, and a plurality of vertical support walls 13 connecting the lower-stage substrate 11 and the upper-stage substrate 12. A plurality of anti-vibration brackets 15 are mounted below the lower-stage substrate 11, and the stand 10 is arranged on a flat surface via the anti-vibration brackets 15. On the countertop F. An inverter motor 80 is fixed on the lower substrate 11. In addition, bearing portions 20, 30, and 40 and a rotary encoder 70 are mounted on the upper substrate 12.

The fifth figure is a longitudinal sectional view of the load applying portion 100 of the rotational torque test device 1. The load applying section 100 includes a stepped cylindrical casing 100 a, a servo motor unit 150, a speed reducer 160 and a connecting shaft 170, and a torque sensor 172 installed in the casing 100 a. The housing 100a includes a motor housing portion 110 (abdomen) that houses the servo motor unit 150, a shaft portion 120 that is rotatably supported by the bearing portion 20, a shaft portion 130 that is rotatably supported by the bearing portion 30, and a slide ring portion. The shaft portion 140 of the sliding ring 51 of 50 (fourth figure). The motor accommodating portion 110 and the shaft portions 120, 130, and 140 are each a member having a substantially cylindrical shape (or a stepped cylindrical shape having a stepwise diameter change in the axial direction) having a hollow portion, respectively. The motor accommodation portion 110 is a member that accommodates the largest outer diameter of the servo motor unit 150 in the hollow portion. The shaft portion 120 is connected to one end portion (the right end portion in the fifth figure) of the test object T1 side of the motor housing portion 110 and the other end portion is connected to the shaft portion 130. Further, the shaft portion 140 is connected to the shaft portion 140 at an end portion on the side opposite to the motor housing portion 110 in the shaft portion 130. The shaft portion 140 is rotatably supported at the front end portion (the left end portion in the fourth figure) by a bearing portion 40.

As shown in the fourth figure, the servo motor unit 150 is fixed to the motor housing portion 110 by a plurality of fixing rods 111. Each fixing rod 111 is screwed into a plug hole 150B3t provided on the load side bracket 150B3 of the servo motor 150B shown in the second figure, a plug hole 150B4t provided on the counter load side bracket 150B4, and provided on the biaxial output servo motor 150A. The plug hole 150A3t of the first bracket 150A3 and the plug hole 150A4t provided in the second bracket 150A4.

The drive shaft 152 of the servo motor unit 150 is connected to the input shaft of the reducer 160 via a coupler 154. A connecting shaft 170 is connected to the output shaft of the reduction gear 160. In addition, the reducer 160 includes a mounting flange 162, and the mounting flange 162 is sandwiched between the motor housing portion 110 and the shaft portion 120. In a state in which the motor housing portion 110 and the shaft portion 120 are fastened by bolts (not shown), the reducer 160 is fixed to the casing 100a.

The shaft portion 120 is a generally stepped cylindrical member, and has a pulley portion 121 having a large outer diameter on the motor housing portion 110 side, and a main shaft portion 122 rotatably supported by the bearing portion 20 on the subject T1 side. . As shown in the fourth figure, the driving belt 92 is wound on the outer peripheral surface of the pulley portion 121 and the driving pulley 91 mounted on the driving shaft 81 of the variable speed motor 80. The driving force of the variable speed motor 80 is driven by the driving belt. 92 is transmitted to the pulley part 121, and the load application part 100 can be rotated. Further, a connection portion between the speed reducer 160 and the connection shaft 170 is housed in the pulley portion 121. In order to accommodate the connection portion, a small device structure can be realized without using an increased number of parts by using a certain portion of the outer diameter which needs to be thickened as a pulley.

A torque sensor 172 is attached to a front end portion (right end portion in the fifth figure) of the main shaft portion 122 of the shaft portion 120. In addition, one surface of the torque sensor 172 (the right side of the fifth figure) becomes a seating surface on which the input shaft (clutch cover) of the test body T1 is mounted, and the torque sensor 172 detects the application to the test body. T1 torque.

Bearings 123 and 124 are provided on the inner peripheral surface of the main shaft portion 122 of the shaft portion 120 near both ends in the axial direction. The connecting shaft 170 is rotatably supported in the shaft portion 120 by bearings 123 and 124. The torque sensor 172 has a substantially cylindrical shape having a hollow portion, and the front end portion (right end portion in the fifth figure) of the connecting shaft 170 penetrates the hollow portion of the torque sensor 172 and protrudes to the outside. A front end portion protruding from the torque sensor 172 is inserted into a shaft hole of a clutch disc (clutch hub) of an output shaft of the subject T1 and fixed. That is, by the servo motor unit 150 driving the connecting shaft 170 to the housing 100 a of the load applying portion 100, the input shaft (clutch cover) of the test body T1 fixed to the housing 100 a and the connecting shaft 170 can be fixed. The set motion is applied between the output shaft (clutch disc) of the subject T1 State or static torque.

In addition, as shown in the fourth figure, a rotary encoder 70 for detecting the number of revolutions of the load applying section 100 is disposed near an end portion (left end of the fourth figure) of the shaft portion 130.

A slide ring 51 of a slide ring portion 50 is attached to a central portion in the axial direction of the shaft portion 140. The slip ring 51 is connected to a power line 150W (fifth figure) that supplies a drive current to the servo motor unit 150. A power line 150W extending from the servo motor unit 150 is connected to the slip ring 51 through a hollow portion formed in the shaft portion 130 and the shaft portion 140.

The slip ring portion 50 includes a slip ring 51, a brush holder 52, and four brushes 53. As described above, the slip ring 51 is attached to the shaft portion 140 of the load applying portion 100. The brush 53 is fixed to the bearing portion 40 by a brush holder 52. The sliding ring 51 includes four electrode rings 51r arranged at equal intervals in the axial direction, and each brush 53 is arranged opposite to each electrode ring 51r. Each electrode ring 51r is connected to each power line 150W of the servo motor unit 150, and each brush 53 is connected to a servo motor drive unit 330 (described later). That is, each power line 150W of the servo motor unit 150 is connected to the servo motor drive unit 330 via the slip ring portion 50. The slip ring portion 50 introduces the driving current of the servo motor unit 150 supplied from the servo motor drive unit 330 into the rotating load applying portion 100.

Further, a slide ring (not shown) of the slide ring portion 60 is attached to the front end portion (left end portion in the fourth figure) of the shaft portion 140. The slip ring of the slip ring portion 60 is connected to a communication line 150W '(fifth figure) extending from the servo motor unit 150, for example, a torque sensor 172 and a rotary encoder 150B5 (No. Signals such as FIG. 2 are output to the outside through the slip ring portion 60. When a large current such as a drive current of a large-capacity motor flows into the slip ring, large electromagnetic noise is easily generated by discharging. In addition, since the slip ring is not completely shielded, it is susceptible to interference from electromagnetic noise. As described above, by using another slip ring arranged at a certain distance, A configuration in which a communication line 150W ′ flowing in a weak current and a power line 150W flowing in a large current are connected to external wiring can effectively prevent noise from being mixed into a communication signal. In this embodiment, the sliding ring portion 60 is provided on a surface opposite to the sliding ring portion 50 side of the bearing portion 40. With this configuration, the sliding ring portion 60 can be effectively shielded from electromagnetic noise generated on the sliding ring portion 50 by the bearing portion 40.

Next, a control system of the rotational torque test device 1 will be described. The sixth figure is a block diagram showing a schematic configuration of a control system of the rotational torque test device 1. The rotational torque test device 1 includes: a control unit C1 that controls the entire rotational torque test device 1; a setting unit 370 for setting test conditions; and according to the set test conditions (the waveform of the torque or torque angle applied to the test object, etc.) ) To calculate the waveform of the driving amount of the servo motor unit 150 and output the waveform generating unit 320 to the control unit C1; the servo motor driving unit 330 that generates the driving current of the servo motor unit 150 according to the control of the control unit C1; according to the control unit C1 A variable speed motor drive unit 340 that controls the drive current of the variable speed motor 80; a torque measurement unit 350 that calculates the torque applied to the subject based on a signal from the torque sensor 172; and a rotary encoder The number-of-revolutions measuring unit 360 of the number-of-revolutions of the signal calculation load applying section 100 is 70.

The setting unit 370 is provided with a user input interface such as a touch panel (not shown), a replaceable recording medium reading device such as a CD-ROM drive, GPIB (General Purpose Interface Bus), and USB (Universal Serial Bus) External input interface and network interface such as Universal Serial Bus. The setting unit 370 is based on user input accepted through a user input interface, data read from a removable recording medium, data input from an external device (such as a function generator) through an external input interface, and / or The data obtained from the server through the network interface is used to set the test conditions. In addition, the transformation of this embodiment The dynamic torque test device 1 corresponds to the control of the torque applied to the test object T1 (that is, the drive amount of the servo motor unit 150 detected by the rotary encoder 150B5 built in the servo motor unit 150) to the test object. Torque displacement control of T1; and two control methods of torque control controlled according to the torque applied to the subject T1 (that is, detected by the torque sensor 172) can be set by the setting unit 370 Set whether to control by any control method.

The control unit C1 instructs the variable frequency speed regulating motor driving unit 340 to rotationally drive the variable frequency speed regulating motor 80 according to the set value of the rotation speed of the subject T1 obtained from the setting unit 370. In addition, the control unit C1 instructs the servo motor drive unit 330 to drive the servo motor unit 150 based on the waveform data of the drive amount of the servo motor unit 150 obtained from the waveform generation unit 320.

As shown in the sixth figure, the torque measurement unit 350 transmits the measurement value of the torque calculated based on the signal from the torque sensor 172 to the control unit C1 and the waveform generation unit 320. In addition, the signals of the built-in rotary encoder built in the servo motor unit 150 are transmitted to the control unit C1, the waveform generating unit 320, and the servo motor driving unit 330. The waveform generating unit 320 calculates a measurement value of the number of revolutions of the servo motor unit 150 from a signal of a built-in rotary encoder that detects a rotation angle of the drive shaft 152 of the servo motor unit 150. The waveform generating unit 320 compares the set value and the measured value of the torque (the driving amount of the servo motor unit 150 in the case of displacement control) in the case of torque control, and corrects the transmission to the control unit C1 in a manner consistent with the two. The setting value of the driving amount of the servo motor unit 150.

In addition, the rotation speed measurement unit 360 transmits the measurement value of the rotation number of the load application unit 100 calculated based on the signal from the rotary encoder 70 to the control unit C1. The control unit C1 compares the set value and the measured value of the number of revolutions of the load imparting unit 100, and feedback-controls the frequency of the drive current transmitted to the variable frequency speed-regulating motor 80 in a manner consistent with the two.

In addition, the servo motor drive unit 330 compares the target value of the drive amount of the servo motor unit 150 with the drive amount detected by the built-in rotary encoder 150B5, and feedback-controls the servo motor unit so that the drive amount approaches the target value. 150 drive current.

In addition, the control unit C1 is provided with an unillustrated hard disk device for storing test data, and the rotation speed of the test body T1, the torque angle (the rotation angle of the servo motor unit 150) applied to the test body T1, and The data of each measured value of the torque load is recorded in the hard disk device. The change of each measured value with time is recorded during the entire period from the start to the end of the test. With the configuration of the first embodiment described above, a rotational torque test using the automobile clutch as the subject T1 is performed.

The above-mentioned rotational torque testing device 1 is configured to combine the output of the variable frequency speed regulating motor 80 for the rotation number control and the output of the servo motor unit 150 for the torque control, and can independently and accurately control the rotation number and torque. In particular, by newly using a servo motor unit 150 connected in series to a plurality of ultra-low inertia servo motors, it is possible to control a large torque that fluctuates with a high angular jerk (angular jerk), and it is possible to accurately reproduce the output of an automobile engine ( Especially the torque vibration of reciprocating engines). In addition, by using the servo motor unit 150, the response of the torque control is also improved, and a response time of 3 ms or less can be achieved. The rotational driving device of such a configuration is not limited to a rotational torque test device, but can be used as a power source for various devices. In particular, it can be used as a power simulator (simulation engine) that can output power that simulates the output of various engines in a test device for automobiles (or automotive parts). In addition, since the torque generated by the servo motor unit 150 is controlled with high precision, the reproducibility is extremely high and there is no difference between each other. Therefore, it can give a more uniform load than the test using a physical engine in the past, and can perform a more reproducible test.

(Modification of the first embodiment)

7 and 8 are external views of the power simulators 1a and 1b, respectively, in which a part of the rotational torque test device 1 according to the first embodiment of the present invention is changed.

The difference between the power simulator 1a shown in the seventh figure and the above-mentioned rotational torque test device 1 is that it includes a bearing portion 1020, a slip ring 1401, and a mounting portion 173. The bearing portion 1020 is a torque sensor that has the same configuration as the bearing portion 1020 of the second embodiment described later, and includes a torque that detects the torque of the coupling shaft 170 (the coupling shaft 1170 of the second embodiment). The slip ring 1401 is attached to the bearing portion 1020 and takes out a signal output from a torque sensor built in the bearing portion 1020 to the outside. The mounting portion 173 is a flange joint and is mounted on a front end portion of the connecting shaft 170. The power simulator 1a thus constructed is used in engine auxiliary equipment (e.g., buffer pulleys, alternators, balance shafts, starter motors, ring gears, water pumps, oil pumps, chains, timing belts, couplers, VCT), power transmission devices, Durability test for tires, etc.

In addition, the two-stage structure of the rotational torque test device 1 and the power simulator 1a described above is formed by disposing a variable frequency speed regulating motor 80 on the lower-stage substrate 11 and arranging the load imparting unit 100 on the upper-stage substrate 12, as shown in the eighth figure. The power simulator 1b shown in the figure may also adopt a first-order structure in which the variable frequency speed regulating motor 80 and the load applying section 100 are arranged on the same substrate 10X. In addition, the two-stage structure contributes to miniaturization of the installation area. In addition, the simple structure of the first-order structure contributes to cost reduction, and it also contributes to improving the rigidity of the base (that is, vibration resistance and load resistance).

Next, a specific example of an endurance test device for engine auxiliary equipment using the power simulator 1a will be described. The test device 100E described below is a test device for a starter motor that performs a durability test on the ring gear T1 and the starter motor T2 of the flywheel of the test subject by giving a rotational driving force to the engine load generated by the simulated power simulator 1a. The test device 100E combines the starter motor with the flywheel. The ring gear is kept in a state, and a rotational driving force is given to the power simulator 1a to perform a durability test of the starter motor and the ring gear.

The ninth figure is a side view of the test device 100E. In addition, the tenth figure is an enlarged view near the subject (ring gear T1, starter motor T2).

As shown in the ninth and tenth drawings, the test device 100E includes a support portion S for holding a test subject on the power simulator 1a. That is, the test device 100E includes a variable frequency speed control motor 80 mounted on the lower-stage substrate 11 of the gantry 10, and a load applying portion that is rotatably supported by the bearing portions 1020, 30, and 40 mounted on the upper-stage substrate 12. 100. The load applying unit 100 is driven to rotate by a variable frequency speed regulating motor 80. The load applying unit 100 includes a servo motor unit 150 and a speed reducer, and an output shaft of the servo motor unit 150 is connected to a connecting shaft 170 protruding to the outside of the load applying unit 100 via a speed reducer. The connecting shaft 170 is arranged coaxially with the rotation axis of the load applying section 100, and the rotation of the connecting shaft 170 becomes a rotator in which the servo motor unit 150 is added to the rotation of the load applying section 100 by the variable frequency speed regulating motor 80. The number of revolutions of the engine is reproduced by the frequency conversion speed regulation motor 80, and the high-speed fluctuation torque (high angular acceleration, high angular jerk (angle plus acceleration)) of the engine is reproduced by the servo motor unit 150.

A mounting portion 173 for mounting the ring gear T1 is attached to a front end portion of the coupling shaft 170 of the load applying portion 100. In addition, a support portion S that supports the starter motor T2 is mounted on the stage substrate 12 on the stage 10. When the ring gear T1 is mounted on the mounting portion 173 and the starter motor T2 is mounted on the support portion S, the ring gear T1 and the planetary gear of the starter motor T2 can be combined. In this state, the power simulator 1a of the test device 100E is driven, and the rotation of the simulated engine is given to the ring gear T1 and the starter motor T2 for testing.

(Second Embodiment)

Next, a rotational torque test apparatus 1000 of a power cycle system according to a second embodiment of the present invention will be described. The rotational torque test device 1000 is a device for performing a rotational torque test using a propeller shaft of an automobile as the test body T2. The propeller shaft can be rotated and a set fixed or variable torque can be applied between the input shaft and the output shaft of the propeller shaft. The eleventh figure is a top view of the rotational torque test device 1000. The twelfth figure is a side view of the rotational torque test device 1000 (the upper figure is viewed from the lower side in the eleventh figure). The thirteenth figure is a longitudinal sectional view of the vicinity of the load applying section 1100 described later. The control system of the rotational torque test device 1000 has a schematic configuration similar to that of the first embodiment shown in FIG. 5.

As shown in the eleventh figure, the rotational torque test device 1000 includes: four bases 1011, 1012, 1013, and 1014 that support each part of the rotational torque test device 1000; and rotates together with the subject T2 and rotates between the subjects T2. A load imparting portion 1100 to which a specified torque is applied between both ends; bearing portions 1020, 1030, and 1040 supporting the load imparting portion 1100 in a freely rotatable manner; and sliding ring portions 1050, 1060 and 1400; Rotary encoder 1070 that detects the number of revolutions of the load imparting unit 1100; Rotates the load imparting unit 1100 and one end of the test subject T2 (the right end of the eleventh figure) with a set rotation direction and number of revolutions Speed motor 1080; driving force transmission unit 1190 (driving pulley 1191, driving belt (timing belt) 1192, and driven pulley 1193) that transmits the driving force of the variable frequency speed regulating motor 1080 to the load imparting unit 1100; and the variable frequency speed regulating motor 1080 The driving force is transmitted to the driving force transmission unit 1200 at one end of the subject T2. The driving force transmission unit 1200 includes a bearing portion 1210, a driving shaft 1212, a relay shaft 1220, a bearing portion 1230, a driving shaft 1232, a driving pulley 1234, a bearing portion 1240, a driving shaft 1242, a driven pulley 1244, and a driving belt (timing belt) 1250. And workpiece mounting section 1280.

In addition, the bearing portions 1020, 1030, 1040, The sliding ring portion 1050, the sliding ring portion 1060, the rotary encoder 1070, the variable frequency speed regulating motor 1080, and the driving pulley 1091 are respectively different from the bearing portions 20, 30, and 40, and the sliding ring portion in the rotational torque test device 1 of the first embodiment. 50. The slip ring portion 60, the rotary encoder 70, the variable frequency speed control motor 80, and the drive pulley 91 are configured in the same manner. The load applying section 1100 has the same configuration as the load applying section 100 of the first embodiment, except for a shaft section 1120, a connecting shaft 1170, a work mounting section 1180, and a slide ring section 1400 described later. In addition, the driving belt 1192 is different from the driving belt 92 in the first embodiment in that the driven pulley 1193 is placed on the driven side, and the other components are the same as the driving belt 92. In the following description of the second embodiment, the same or similar reference numerals are used for the same or similar components as those of the first embodiment, and detailed descriptions are omitted, and the differences from the first embodiment will be mainly described.

The four bases 1011, 1012, 1013, and 1014 are respectively arranged on the same flat table surface F, and are fixed by fixing bolts (not shown). A frequency conversion motor 1080 and a bearing portion 1210 are fixed to the base 1011. On the base 1012, bearing portions 1020, 1030, and 1040 supporting the load applying portion 1100 and a support frame 1402 of the sliding ring portion 1400 are fixed. A bearing portion 1230 is fixed to the base 1013, and a bearing portion 1240 is fixed to the base 1014. The bases 1013 and 1014 can be moved in the axial direction of the bearing portion 1230 or 1240 according to the length of the measured body T1 by loosening the fixing bolts.

The connecting shaft 1170 of the load applying portion 1100 protrudes outward from the front end portion (right end of the thirteenth figure) of the shaft portion 1120, and a workpiece mounting portion (convex) is fixed to the front end portion (right end of the thirteenth figure) of the connecting shaft 1170. Edge joint) 1180. A slide ring 1401 having a plurality of electrode rings is attached to a central portion in the axial direction of a portion protruding from the shaft portion 1120 of the connecting shaft 1170.

In addition, as shown in the thirteenth figure, the shaft portion 1120 accommodated in the connecting shaft 1170 An inner portion is formed with a narrowed portion 1172 having a ring-shaped outer diameter, and a strain gauge 1174 is bonded to a peripheral surface of the narrowed portion 1172. In addition, the connecting shaft 1170 is a cylindrical member having an unillustrated hollow portion on the central axis, and an insertion hole (not shown) is formed in the narrow portion 1172 to communicate with the hollow portion. A lead (not shown) of the strain gauge 1174 is connected to each electrode ring of the slip ring 1401 through the above-mentioned insertion hole and hollow portion formed in the connecting shaft 1170. In addition, a wiring groove extending from the narrow portion 1172 to the sliding ring 1401 may be provided on the peripheral surface of the connecting shaft 1170 to replace the hollow portion and the insertion hole. The lead of the strain gauge 1174 is wired to the sliding ring 1401 through the wiring groove. .

A brush portion 1403 fixed to the support frame 1402 is disposed below the slide ring 1401. The brush portion 1403 includes a plurality of brushes which are arranged to face each other in contact with each electrode ring of the slide ring 1401. The terminals of each brush are connected to a torque measuring unit 1350 (to be described later) by a wire (not shown).

Next, the configuration of the driving force transmission unit 1200 (FIG. 11) will be described. The bearing portions 1210, 1230, and 1240 support the driving shafts 1212, 1232, and 1242 in a freely rotatable manner, respectively. One end portion (the left end portion of the eleventh figure) of the drive shaft 1212 is connected to the drive shaft of the variable frequency speed control motor 1080 via a drive pulley 1191. In addition, one end portion (the left end portion in the eleventh figure) of the drive shaft 1232 is connected to the other end portion (the right end portion in the eleventh figure) via the relay shaft 1220. A driving pulley 1234 is mounted on the other end portion (right end portion of the eleventh figure) of the driving shaft 1232, and a driven pulley 1244 is mounted on one end portion (right end portion of the eleventh figure) of the driving shaft 1242. A driving belt 1250 is hung on the driving pulley 1234 and the driven pulley 1244. In addition, a work mounting portion (flange joint) 1280 for fixing one end portion of the test body T2 is mounted on the other end portion (left end portion of the eleventh figure) of the drive shaft 1242.

The driving force of the variable speed motor 1080 is transmitted through the driving force transmission unit 1200 described above. (That is, the drive shaft 1212, the relay shaft 1220, the drive shaft 1232, the drive pulley 1234, the drive belt 1250, the driven pulley 1244, and the drive shaft 1242) are transmitted to the workpiece mounting portion 1280, and the set rotation direction and number of revolutions The workpiece mounting portion 1280 is rotated. In addition, at the same time, the driving force of the variable frequency speed regulating motor 1080 is transmitted to the load applying unit 1100 via the driving force transmitting unit 1190 (ie, the driving pulley 1191, the driving belt 1192, and the driven pulley 1193), so that the load applying unit 1100 and the workpiece mounting unit 1280 synchronization (that is, always with the same number of rotations and the same phase).

(Third Embodiment)

In the second embodiment described above, the drive shaft 1212 and the load applying unit 1100, the drive shaft 1232, and the drive shaft 1242, which are arranged in parallel with each other, are connected by a drive belt 1192 and 1250, respectively, to constitute a power circulation system. However, the present invention is not limited to this configuration. As in the third to seventh embodiments described below, a configuration that transmits power by using a gear device instead of a driving belt is also included in the scope of the present invention.

Fourteenth figure (a) is a top view of a torque testing device according to a third embodiment of the present invention. In addition, the fourteenth figure (b) is a side view of the torque test device of this embodiment. As shown in the fourteenth figure, the torque test device 100H of this embodiment is fixed on the base 7110 with a work rotation servo motor 7121, a torque imparting unit 7130, a first gear box 141, and a second gear box 142. Make up.

The first gear box 141 includes four shaft connecting portions 141a1, 141a2, 141b1, and 141b2. The second gear box 142 includes two shaft connecting portions 142a and 142b.

A drive pulley 7122 is attached to the output shaft 121a of the work rotation servo motor 7121. In addition, a shaft connection portion 141a1 of the first gear box 141 is provided with a shaft 123a of the driven pulley 7123. In addition, an endless belt 7124 is hung on the driving pulley 7122 and the driven pulley 7123. By driving the workpiece rotation servo motor 7121, the driven pulley 7123 can be rotated at a desired rotation speed.

The shaft connecting portions 141b1 and 141b2 are connected to a torque applying unit 7130. The configuration of the torque applying unit 7130 will be described below.

The fifteenth figure is a side sectional view of the torque imparting unit 7130 and the first gear box 141 according to this embodiment. The torque applying unit 7130 includes a casing 131, a torque applying servo motor unit 132, and a reduction gear 133 fixed in the casing 131. The servo motor unit 132 for torque application has the same configuration as the servo motor unit 150 of the first embodiment, but the servo motor 150B of the first embodiment may be used instead of the servo motor unit 150. A tubular portion 131 a is formed on one end side (right side in the figure) of the casing 131 in the axial direction. The tubular portion 131 a is inserted into the first gear case 141 via the shaft connection portion 141 b 1 and is rotatably supported in the first gear case 141. A gear 141b3 is attached to the tubular portion 131a.

The speed reducer 133 has an input shaft 133a and an output shaft 133b, and decelerates the rotational motion input to the input shaft 133a and outputs it to the output shaft 133b. The input shaft 133a of the speed reducer 133 is connected to the output shaft 132a of the torque applying servo motor unit 132 via a coupler 134. Further, the output shaft 133b of the speed reducer 133 is rotatably supported inside the tubular portion 131a of the casing 131, and protrudes from a front end portion of the tubular portion 131a. An output shaft 133b of the speed reducer 133 protruding from the tubular portion 131a is connected to a shaft connection portion 141b2 of the first gear box 141.

As shown in FIG. 14, the output shaft 133 b of the speed reducer 133 is connected to the input shaft W1 a of the transmission unit W1 of the test object through the coupler 151. The output shaft W1b of the transmission unit W1 is connected to a shaft connection portion 142b of the second gear box 142 via a torque sensor 7160.

It is connected to the shaft connection part 142 a of the second gear box 142 via the relay shaft 143. The output shaft W2b of the transmission unit W2. The input shaft W2a of the transmission unit W2 is connected to a shaft connection portion 141a2 of the first gear box 141 via a coupler 7152.

Here, the shaft 123a of the driven pulley 7123 mounted on the shaft connecting portion 141a1 of the first gear box 141 and the shaft mounted on the shaft connecting portion 141a2 are configured inside the first gear box 141 via the coupler 153. Are connected, and the two are turned into a whole. In addition, a gear 141a3 is mounted on the shaft 123a of the driven pulley 7123 mounted on the shaft connection portion 141a1. A gear 141b3 is installed inside the first gear box 141 on the tubular portion 131a connected to the shaft connection portion 141b1. As shown in the fourteenth figure (a), the gears 141a3 and 141b3 are meshed with each other via the intermediate gear 141i, and can rotate between the shafts connected to the shaft connection portions 141a1 and 141a2 and the shafts connected to the shaft connection portion 141b1. motion. In addition, since the intermediate gear 141i is interposed between the gears 141a3 and 141b3, the driven pulley 7123 and the relay shaft 143 and the casing 131 of the torque imparting unit 7130 can rotate in the same direction.

A gear 142a1 is attached to a shaft portion (one end portion of the relay shaft 143) connected to the shaft connection portion 142a. A gear 142b1 is connected to a shaft portion connected to the shaft connection portion 142b. The gears 142a1 and 142b1 are meshed with each other via the intermediate gear 142i inside the second gear box 142, and a rotational movement can be transmitted between the shaft connected to the shaft connection portion 142a and the shaft connected to the shaft connection portion 142b. In addition, since the intermediate gear 142i is interposed between the gear 142a1 and the gear 142b1, the shaft connected to the shaft connection portion 142a and the shaft connected to the shaft connection portion 142b can rotate in the same direction.

Therefore, in the present embodiment, when the servo motor 7121 for rotation of the workpiece is driven (fourteenth figure), the driven pulley 7123 and the casing 131 (fifteenth figure) connected to the driven pulley 7123 via gears are rotated. As described above, since the torque applying servo motor unit 132 is fixed to the casing 131, the casing 131 and the torque applying servo motor are integrated and rotated. Thus, in the case When the servo motor unit 132 for driving torque is applied in the state of 131 rotation, the output shaft 133b of the speed reducer 133 is obtained by adding the number of revolutions of the casing 131 and the number of revolutions of the output shaft 133b by the torque motor of the servomotor unit 132. Number of revolutions to turn.

Transmission unit W2 is the same type (same reduction ratio) as transmission unit W1. In addition, the gear ratios of the gear boxes 141 and 142 are both 1: 1. Therefore, the number of rotations of the shafts connected to the shaft connection portions 141a2 and 141b2 of the first gear box 141 is approximately equal. In addition, as described above, the transmission unit W2 is a virtual workpiece used for adjusting the number of rotations of the shafts connected to the shaft connection portions 141a2 and 141b2, and is not the object of the torque test.

In this embodiment, for example, the servo motor 7121 for workpiece rotation is driven at a constant speed, and the output shaft 132a is reciprocated by the servo motor unit 132 (fifteenth figure) for torque application, so that the input shaft of the transmission unit W1 can be made. W1a rotates and applies a periodically varying torque.

(Fourth embodiment)

Next, a fourth embodiment of the present invention will be described. The sixteenth figure is a bottom view of a torque testing device according to a fourth embodiment of the present invention. As shown in FIG. 16, the torque test device 100A of this embodiment does not use a virtual workpiece, but directly connects the coupler 7152 and the shaft connection portion 142 a of the second gear box 142 through a relay shaft 143A. The torque test device 100H of the third embodiment is the same. In the following description of the fourth embodiment, elements having the same or similar functions as those of the third embodiment are denoted by the same or similar symbols, and repeated descriptions are omitted.

In this embodiment, the number of revolutions of the relay shaft 143A (that is, the number of revolutions of the housing 131 of the torque imparting unit 7130) and the number of revolutions of the shaft (that is, the number of revolutions of the shaft connection portion 141b2 of the first gear box 141) The number of revolutions of the input shaft W1a of the transmission unit W1 is different. Therefore, in this embodiment, the driving torque is rotated in a manner to compensate for the change in the number of revolutions on the input and output shafts of the transmission unit W1. Servo motor unit 132 (fifteenth figure) for torque application of the application unit 7130. For example, when the reduction ratio of the transmission unit W1 is 1 / 3.5, the rotation speed of the input shaft W1a is set to 4000 rmp, and the rotation speed of the output shaft W1b is set to 1143 rpm for torque test, the servo motor 7121 for workpiece rotation is set. The number of revolutions is such that the housing 131 of the torque imparting unit 7130 is imparted to a rotation of 1143 rpm, and the number of revolutions of the servo motor unit 132 of the torque imparting is set so that the relative revolutions of the case 131 to the output shaft 133b of the speed reducer 133 With a speed of 2857 rpm, the number of revolutions of the input shaft W1a of the transmission unit W1 can be set to 4000 rpm.

In this way, in this embodiment, a power cycle can be performed, and a torque test of the transmission unit W1 can be performed without using a virtual workpiece.

In addition, in this embodiment, in order to perform rotational driving and torque application of the workpiece by a highly responsive servo motor, the gear ratio of the transmission unit W1 may be changed during a torque test. That is, in this embodiment, the rotation number of the output shaft W1b can be changed in synchronization with changing the gear ratio of the transmission unit W1, and the number of rotations of the torque applying servo motor unit 132 can be rapidly changed. Therefore, even if the transmission unit W1 is changed The gear ratio still does not cause excessive load on the gears in the gear boxes 141 and 142 and the transmission unit W1 to cause damage.

(Fifth Embodiment)

In the third and fourth embodiments of the present invention, the transmission unit is used as a subject (workpiece). However, the present invention is not limited to the above-mentioned constituents, and other types of workpieces can also be subjected to a torque test. The torque test device of the fifth embodiment of the present invention described below is a person who performs a torque test using the entire power transmission system of a FR car as a workpiece.

The seventeenth figure is a top view of a torque testing device according to a fifth embodiment of the present invention. As shown in the seventeenth figure, the torque test device 100B of this embodiment is a pair of transmission units. The torque transmission tester is the power transmission system W3 of the FR car composed of TR1, propeller shaft PS, and differential gear DG1.

In the torque test device 100B of this embodiment, since the output shaft of the differential gear DG1 has two systems (DG1a, DG1b), the two systems are respectively provided with first sections for sending the output of the differential gear DG1 back to the first gear box 141B. Two gear boxes (142B1, 142B2) and relay shafts (143B1, 143B2). Specifically, the output shafts DG1a and DG1b of the differential gear DG1 are connected to the relay shafts 143B1 and 143B2 via the second gear boxes 142B1 and 142B2, respectively.

In addition, the first gear box 141B is provided with the shaft connecting portions 141Bb1 and 141Bb2 (the shaft connecting portion 141b1 of the third embodiment) of the tubular portion 131a of the housing 131 of the torque imparting unit 7130 and the input shaft TR1a of the transmission unit TR1. And 141b2 have the same function), and the shaft connecting portions 141Ba1 and 141Ba2 connecting the output shaft 121a and the relay shaft 143B1 of the servo motor 7121 for workpiece rotation have a shaft connecting portion 141Bc connected to the relay shaft 143B2. The output shaft 121a and the relay shaft 143B1 of the work rotation servo motor 7121 are connected via a coupler 153B disposed in the first gear box 141. The input shaft TR1a of the transmission unit TR1 and the output shaft 133b of the speed reducer 133 of the torque imparting unit 7130 are connected via a coupler 151B disposed in the first gear box 141.

The shafts connected to the shaft connection portions 141Ba1, 141Bb1, and 141Bc are connected to each other via gears and intermediate gears (not shown) mounted on the shafts separately. When the servo motor 7121 for workpiece rotation is driven, the relay shafts 143B1, 143B2 and The housing 131 of the torque imparting unit 7130 is rotatable.

In this embodiment, as in the fourth embodiment, because the number of revolutions of the input shaft TR1a of the transmission unit TR1 is different from the number of revolutions of the relay shafts 143B1 and 143B2, the torque imparting is controlled so as to compensate for the difference in the number of revolutions. The number of revolutions of the motor 132 (fifteenth figure) is used.

(Sixth embodiment)

In addition, in the configuration of the present invention, a power transmission system for FF vehicles may be used as a workpiece. The torque test device of the sixth embodiment of the present invention described below is a person who performs a torque test on a power transmission system of an FF car.

The eighteenth figure is a top view of a torque test device 100C according to a sixth embodiment of the present invention. As shown in FIG. 18, the torque test device 100C of this embodiment is a torque transmission device W4 for a FF vehicle that uses the transmission unit TR2 with a built-in torque converter TC and the differential gear DG2 as a workpiece to perform torque. tester.

As shown in FIG. 18, the power transmission system W4 is a horizontally-transmitted engine power transmission system in which an input shaft TR2a of a transmission unit TR2 and output shafts DG2a and DG2b of a differential gear DG2 are formed substantially in parallel. Therefore, in this embodiment, one output shaft DG2a of the differential gear DG2 is still connected to the first gear box 141C, and only the other output shaft DG2b is connected to the relay shaft 143C via the second gear box 142C.

The first gear box 141C of this embodiment is the same as the fifth embodiment, and includes: the tubular portion 131a of the casing 131 of the torque imparting unit 7130 and the shaft connecting portions 141Cb1 and 141Cb2 of the input shaft TR2a of the transmission unit TR2; The shaft connecting portions 141Ca1 and 141Ca2 of the output shaft 121a of the servo motor 7121 for work rotation and the output shaft DG2a of the differential gear DG2; and a shaft connecting portion 143Cc connected to the relay shaft 143C. The output shaft 121a of the servo motor 7121 for workpiece rotation and the output shaft DG2a of the differential gear DG2 are connected by a coupler 153C disposed in the first gear box 141C. In addition, the output shaft 133b of the speed reducer 133 of the torque imparting unit 7130 and the input shaft TR2a of the transmission unit TR2 are connected by a coupler 151C disposed in the first gear box 141C.

When the shafts connected to the shaft connecting portions 141Ca1, 141Cb1, and 141Cc are connected to each other via gears mounted separately on each shaft, and when the servo motor 7121 for workpiece rotation is driven, the output shaft DG2a of the differential gear DG2, the relay shaft 143C, and the rotation shaft The housing 131 of the moment imparting unit 7130 is rotatable.

In this embodiment, as in the fourth and fifth embodiments, the number of revolutions of the input shaft TR2a of the transmission unit TR2 is different from the number of revolutions of the output shaft DG2a and the relay shaft 143C of the differential gear DG2. The number of revolutions of the torque imparting motor 131 (fifteenth figure) is controlled so as to compensate for the difference in the number of revolutions.

(Seventh embodiment)

The nineteenth figure is an external view of a rotational torque test device 100B 'according to a seventh embodiment of the present invention. As shown in Fig. 19, the torque test device 100B 'according to this embodiment is a person who performs a rotational torque test using the differential gear DG1 as an object.

In the torque test device 100B 'of this embodiment, since the output shaft of the differential gear DG1 has two systems (DG1a, DG1b), the two systems are respectively provided for outputting the output of the differential gear DG1 to the first gear box 141B. The second gear box (142B1, 142B2), the bevel gear box (144B1, 144B2), and the relay shaft (143B1, 143B2). Specifically, the output shafts DG1a and DG1b of the differential gear DG1 are connected to the relay shafts 143B1 and 143B2 via the second gear boxes 142B1 and 142B2 and the bevel gear boxes 144B1 and 144B2, respectively.

The first gear box 141B includes a gear 141Bb and gears 141Ba and 141Bc that are respectively coupled to the gear 141Bb. The gear 141Bb is connected to a tubular portion of a casing of the torque imparting unit 7130. Further, the relay shafts 143B1 and 143B2 are connected to the gears 141Ba and 141Bc, respectively. Accordingly, when the variable frequency speed regulating motor 80 is driven, the relay shafts 143B1 and 143B2 and the casing 131 of the torque imparting unit 7130 can rotate.

The output shafts DG1a, DG1b and the input shaft DG1c of the differential gear DG1 are connected to the shaft portions of the gear boxes 142B1, 142B2 and the torque imparting unit 7130 via torque sensors 172a, 172b, and 173c, respectively. The torque sensors 172a, 172b, and 172c are each supported by a bearing portion 1020 (directly without passing through the shaft portion 1120). A strain gauge 1174 is attached to the narrow portion 1172 shown in the thirteenth figure (second embodiment). The shaft is composed of 1170.

In this embodiment, since the number of revolutions of the input shaft DG1c of the differential gear DG1 is different from the number of revolutions of the output shafts DG1a and DG1b, it is necessary to control the built-in torque imparting unit 7130 to compensate for the difference in the number of revolutions. The number of revolutions of the servo motor unit 150.

(Eighth embodiment)

In addition, the present invention can also be applied to a test device that targets a power transmission device for FF vehicles. The torque test device according to the eighth embodiment of the present invention described below is a power cycle test device that uses the power transmission system of an FF car to perform a torque test.

Fig. 20 is an external view of a torque test device 100C 'according to an eighth embodiment of the present invention. As shown in Fig. 20, the torque test device 100C' according to this embodiment is directed to a transmission unit TR for an FF vehicle. Perform a torque test.

As shown in the twentieth chart, the input shaft TRa, the output shafts TRb, and TRc of the transmission unit TR are not decelerated, but are connected to the first gear box 141C via the torque sensors 172a, 172b, and 172c, respectively. In addition, the input shaft TRa and the output shafts TRb and TRc of the transmission unit TR are arranged substantially parallel to each other. Therefore, in this embodiment, the input shaft TRa and one output shaft TRb of the transmission unit TR are still connected to the first gear box 141C, and the other output shaft TRc is arranged approximately parallel to the output shaft TRc via the second gear box 142C. The shaft 143C is connected to the first gear box 141C. That is, the driving force of the output shaft TRc is returned to 180 ° by the second gear box 142C, and then by the relay shaft 143C is transmitted to the first gear box 141C.

The first gear box 141C of this embodiment includes a gear 141Cb, and gears 141Ca and 141Cc that are respectively coupled to the gear 141Cb. The gear 141Ca is coupled to the gear 141Cb via a planetary gear, and the rotation of the gear 141Cb is decelerated and transmitted to the gear 141Ca. The gear 141Ca is connected to the tubular portion of the housing of the torque imparting unit 7130, and the output shaft of the variable frequency speed regulating motor 80 is connected to the gear 141Cc via a timing belt. Accordingly, when the variable frequency speed regulating motor 80 is driven, the output shaft TRb of the transmission unit TR, the output shaft TRc (via the relay shaft 143C), and the casing of the torque imparting unit 7130 rotate.

In addition, in this embodiment, since the transmission unit TR has a reduction ratio, the number of revolutions of the input shaft TRa is different from the number of revolutions of the output shafts TRb and TRc. Therefore, the number of revolutions of the servo motor unit 150 included in the torque imparting unit 7130 is controlled so as to compensate for the difference in the number of revolutions.

The third to eighth embodiments of the present invention described above are examples in which the present invention is applied to a torque test system of a power cycle system in which a power transmission system such as a transmission unit is used as a workpiece. However, the present invention is not limited to the aforementioned constituents. As described in the ninth and tenth embodiments of the present invention described below, the present invention can also be applied to various tests of tires.

(Ninth Embodiment)

The twenty-first figure is a top view of a tire wear test apparatus 100D according to a ninth embodiment of the present invention. The tire abrasion tester 100D includes a power cycle mechanism having the same configuration as the third embodiment.

The first gear box 141D includes four shaft connecting portions 141Da1, 141Da2, 141Db1, and 141Db2. Also. The second gear box 142D includes two shaft connecting portions of 142Da and 142Db.

In this embodiment, the rotating drum DR, which is a simulated road surface, becomes a rotating shaft. Both ends of the shaft 145 are connected to the shaft connection portion 141Da2 of the first gear box 141D and the shaft connection portion 142Da of the second gear box 142D, respectively. In addition, both ends of the shaft 144 serving as a rotation axis of the tire T of the subject are connected to the shaft connection portion 141Db2 of the first gear box 141D and the shaft connection portion 142Db of the second gear box 142D, respectively.

As in the second embodiment, the rotation of the output shaft 121a of the servo motor 7121 for driving the workpieces of the tire T and the rotating drum DR is performed by a belt mechanism composed of a driving pulley 7122, a driven pulley 7123, and an endless belt 7124. The shaft 123a of the driven pulley 7123 is rotatably driven. The shaft 123a is connected to a shaft connection portion 141a of the first gear box 141D.

A tubular portion 131 a of the housing 131 of the torque imparting unit 7130 is connected to the shaft connecting portion 141Db1 of the first gear box 141D. The output shaft 133b of the speed reducer 133 of the torque applying unit 7130 is connected to one end portion of the shaft 144 for the tire T via a coupler 151D disposed inside the first gear box 141D.

The shaft 145 for the drum DR is mounted on one end of the first gear box 141D, and is connected to the shaft 123a of the driven pulley 7123 via a coupler 153D disposed inside the first gear box 141D.

The shaft 123a installed on the shaft connection portion 141Da1 of the first gear box 141D and the shaft (tubular portion 131a) installed on the shaft connection portion 141Db1 form different gears that can be connected to the first gear box 141. These gears are engaged with each other inside the second gear box 142. When the servo motor 7121 for rotating the workpiece is driven, the shaft 145 for the drum DR and the casing 131 of the torque imparting unit 7130 can rotate.

In addition, the shaft 145 mounted on the shaft connecting portion 142Da of the second gear box 142 and the shaft 144 mounted on the shaft connecting portion 142Db are respectively connected to the inside of the second gear box 142. gear. These gears mesh with each other inside the second gear box 142, and the rotation of the shaft 144 is transmitted to the shaft 145 through the second gear box 142.

Because of the above-mentioned configuration, the drive rotation servo motor 7121 can perform a power cycle to drive and drive the rotary drum DR and the tire T. In addition, as shown in FIG. 21, since the diameter of the rotating drum DR and the tire T are different in this embodiment, the gear ratios in the first gear box 141D and the second gear box 142D are set to correspond to the rotating drum DR and the tire. T diameter ratio value.

In the tire abrasion test device configured as described above, the tire T and the drum DR are rotated by driving the servo motor 7121 for rotation by setting the tire T on the shaft 144. In this state, the torque applying servo motor unit 131 (second picture) of the driving torque applying unit 7130 is used to apply torque in the forward or reverse direction to the tire T, thereby simulating the wear and tear of the automobile during acceleration and deceleration. test.

(Tenth embodiment)

Another example of applying the present invention to the test of a tire will be described. The tire testing device of the tenth embodiment of the present invention described below is a testing device that performs tire wear test, endurance test, driving stability test, and the like.

Figures 22 and 23 are perspective views of the tire testing device 100D according to the tenth embodiment of the present invention when viewed from different directions. The tire testing device 100D of this embodiment includes a rotating drum 8010 having a simulated road surface on the outer peripheral surface, a frequency conversion speed-adjusting motor 80 for driving the rotating drum 8010 and a housing of the torque imparting unit 7130, an alignment control mechanism 8160, and A torque imparting unit 7130 that rotatably supports the torque imparted by the tire T of the alignment control mechanism 8160. The torque applying unit 7130 includes a servo motor unit 150 having the same configuration as that of the first embodiment.

The rotating drum 8010 is rotatably supported by a pair of bearings 11a. A pulley 12a is installed on the output shaft of the variable frequency speed regulating motor 80, and a pulley 12b is installed on one of the square shafts of the rotating drum 8010. The pulley 12a and the pulley 12b are connected by a drive belt. A pulley 12c is attached to the other shaft of the rotating drum 8010 via a relay shaft 8013. In addition, the relay shaft 8013 is rotatably supported by a bearing 11b near one end where the pulley is mounted. The pulley 12c is connected to the pulley 12d by a drive belt. The pulley 12d is coaxially fixed to the pulley 12e, and is supported rotatably by the bearing 11c (Figure 27) together with the pulley 12e. The pulley 12e is connected to the tubular portion of the housing of the torque imparting unit 7130 via a drive belt.

In addition, the drive shaft of the servo motor unit 150 built into the torque imparting unit 7130 is connected to the wheel of the alignment control mechanism 8160 on which the tire T is mounted via the relay shaft 14 and the flexible coupler.

Thereby, when the variable frequency speed regulating motor 80 is driven, the rotating drum 8010 is rotated, and the casing of the torque imparting unit 7130 connected to the variable frequency speed regulating motor 80 via the rotating drum 8010 is rotatable. In addition, when the rotating drum 8010 and the tire T system are not operated, the peripheral speed of the contact portion is rotated in the opposite direction in the same manner when the torque imparting unit 7130 is not operated. In addition, by operating the torque applying unit 7130, a dynamic driving force and a braking force can be applied to the tire T.

The alignment control mechanism 8160 of this embodiment is supported in a state where the tire T of the test object is mounted on the wheel, the tread portion contacts the simulated road surface of the rotating drum 8010, and the alignment of the tire T to the simulated road surface And a mechanism for adjusting the tire load (ground pressure) to a set state. The alignment control mechanism 8160 includes a tire load adjusting portion 161 that adjusts the tire load by moving the position of the rotation axis of the tire T to the radius of the rotating drum 8010; and adjusting the tire by tilting the rotation axis of the tire T around the vertical line of the simulated road surface Slip angle adjusting section for slip angle of simulated road surface 8162; a camber adjusting section 163 that inclines the rotation axis of the tire T with respect to the rotation axis of the rotating drum 8010; and a traverse device 164 that moves the tire T in the direction of the rotation axis.

The tire T is configured in the tire testing device 100D described above, and the variable speed motor 80 for rotational driving is used to drive the tire T and the drum DR at the same peripheral speed. In this state, the servo motor unit 150 of the driving torque imparting unit 7130 applies a driving force and a braking force to the tire T to perform a wear test, a durability test, a driving stability test, and the like that simulate the actual driving state.

(Eleventh Embodiment)

Next, a test device for a power absorption type power transmission device using a power simulator according to an embodiment of the present invention will be described.

The twenty-fourth figure is an external view of a power absorption endurance test device 100F for an FR transmission shaft according to an eleventh embodiment of the present invention.

The test device 100F is provided with: a power simulator 100X including a variable frequency speed-adjusting motor 80 and a load imparting unit 100 of a built-in servo motor unit 150; a support portion S of a box supporting the FR drive shaft T of the test subject; Actuators 172a, 172b; and servo motors 90A, 90B for dual power absorption. An input shaft of the FR transmission shaft T is connected to an output shaft of the load applying section 100 via a torque sensor 172a. Further, an output shaft To of the FR transmission shaft T is connected to the pulley portion 180 via a torque sensor 172b. The torque sensors 172a and 172b have the same configuration as the torque sensors 172a, 172b and 172c of the seventh embodiment.

The pulley unit 180 is connected to the two-machine power absorption servo motors 90A and 90B via two driving belts. The two-machine power absorption servo motors 90A and 90B are driven synchronously, and a load is applied to the output shaft To of the FR drive shaft T.

(Twelfth Embodiment)

The twenty-fifth figure is an external view of a power absorption endurance test device 100G for an FF transmission shaft according to a twelfth embodiment of the present invention.

The FF transmission shaft TR of the test object includes one input shaft and two output shafts TRb and TRc. The input shaft of the FF transmission shaft TR is connected to the output shaft of the load applying section 100 via a torque sensor 172a. In addition, an output shaft TRb (TRc) of the FF transmission shaft TR is connected to a power absorption servo motor 90B (90C) via a torque sensor 172b (172c), a pulley portion 180b (180c), and a drive belt. The power absorption servo motor 90B (90C) applies a load to the output shaft TRb (TRc) of the FF transmission shaft TR. The torque sensors 172a, 172b, and 172c have the same configuration as the torque sensors 172a, 172b, and 172c of the seventh embodiment.

(Thirteenth embodiment)

Next, a low-speed rotation torque test device according to a thirteenth embodiment of the present invention will be described. The twenty-sixth figure is a side view of a torque test device 3100 according to the thirteenth embodiment of the present invention. The torsion test device 3100 of this embodiment is a device for performing a torsion test of a subject T1 (for example, a FR vehicle transmission unit) having two rotation shafts. That is, the torque test device 3100 rotates the two rotating shafts of the test body T1 synchronously and gives a phase difference to the rotation of the two rotating shafts, and the load torque causes the two rotating shafts of the test body T1 to rotate. The torque test device 3100 of this embodiment includes a first driving section 3110, a second driving section 3120, and a control unit C3 that comprehensively controls the operation of the torque test device 3100.

First, the structure of the first driving section 3110 will be described. The twenty-seventh figure is a side view lacking a part of the first driving portion 3110. The first driving unit 3110 includes a main body 3110a and a base 3110b that supports the main body 3110a at a predetermined height. The main body 3110a is provided with a servo motor unit 150. Speed machine 3113, box 3114, mandrel 3115, chuck device 3116, torque sensor 3117, slip ring 3119a, and brush 3119b. The body 3110a is assembled on the movable plate 3111 arranged horizontally on the uppermost part of the base 3110b. . The servo motor unit 150 is the same as the first embodiment. The servo motor unit 150 fixes the output shaft (not shown) to the movable plate 3111 in a horizontal direction. In addition, the movable plate 3111 of the base 3110b is slidably provided in the output shaft direction of the servo motor unit 150 (the left-right direction of the twenty-sixth figure).

An output shaft (not shown) of the servo motor unit 150 is connected to an input shaft (not shown) of the reducer 3113 through a coupler (not shown). An output shaft 3113a of the speed reducer 3113 is connected to one end portion of the torque sensor 3117. The other end portion of the torque sensor 3117 is connected to one end portion of the spindle 3115. The mandrel 3115 is rotatably supported by a bearing 3114a fixed to a frame 3114b of the box 3114. A chuck device 3116 for fixing one end portion (one of the rotation shafts) of the subject T1 to the first drive portion 3110 is fixed to the other end portion of the spindle 3115. When the servo motor unit 150 is driven, the rotational movement of the output shaft of the servo motor unit 150 is decelerated by the reducer 3113, and then transmitted to one end of the subject T1 through the torque sensor 3117, the spindle 3115, and the chuck device 3116. unit. In addition, a rotary encoder (not shown) that detects the rotation angle of the spindle 3115 is mounted on the spindle 3115.

As shown in the twenty-seventh figure, the reducer 3113 is fixed to the frame 3114b of the box 3114. In addition, the reducer 3113 includes a gear box and a gear mechanism (not shown) supported by the gear box so as to be rotatably supported by the gear box. That is, the box 3114 also has a function as a device frame that covers the power transmission shaft from the speed reducer 3113 to the chuck device 3116, and supports the power transmission shaft rotatably at the positions of the speed reducer 3113 and the spindle 3115. That is, the gear mechanism of the reducer 3113 connected to one end portion of the torque sensor 3117 and the spindle 3115 connected to the other end portion of the torque sensor 3117 are rotatably supported by the frame of the box 3114 via bearings. 3114b. Therefore, because The moment sensor 3117 does not apply bending moment due to the weight of the gear mechanism of the reducer 3113 and the weight of the spindle 3115 (and the chuck device 3116). Only the test load (torque load) is applied, so it can be detected with high accuracy. Test load.

A plurality of slip rings 3119a are formed on a cylindrical surface on one end side of the torque sensor 3117. A brush holding frame 3119c is fixed to the movable plate 3111 so as to surround the slide ring 3119a from the outer peripheral side. A plurality of brushes 3119b are attached to the inner periphery of the brush holding frame 3119c, and are in contact with the corresponding sliding ring 3119a. While the servo motor unit 150 is driving and the torque sensor 3117 is rotating, the brush 3119b is in contact with the slip ring 3119a and slides on the slip ring 3119a. The output signal of the torque sensor 3117 is configured to be output to the slip ring 3119a, and the brush 3119b in contact with the slip ring 3119a can take out the output signal of the torque sensor 3117 to the first drive section 3110. external.

The structure of the second driving section 3120 (FIG. 26) is the same as that of the first driving section 3110. When the servo motor unit 150 is driven, the chuck device 3126 is rotated. The other end (one of the rotating shafts) of the subject T1 is fixed to the chuck device 3126. In addition, the casing of the subject T1 is fixed to the support frame S.

The torque test device 3100 of this embodiment is a clamp for fixing the output shaft O and the input shaft I (engine side) of the test body T1 of the transmission unit for the FR vehicle to the first driving section 3110 and the second driving section 3120, respectively. In the state of the disk devices 3116 and 3126, they are driven synchronously by the servo motor units 150 and 150, and the rotation speed (or the phase of the rotation) of the two chuck devices 3116 and 3126 is kept different, so that the test object T1 is applied. Torque loader. For example, the chuck device 3126 of the second driving section 3120 is driven at a constant speed, and the chuck device 3116 is rotated so that the torque detected by the torque sensor 3117 of the first driving section 3110 varies according to a specified waveform. , For transmission single The subject T1 of the element applies a torque that fluctuates periodically.

In this way, the torque test device 3100 of this embodiment can precisely drive both the input shaft I and the output shaft O of the transmission unit by the servo motor units 150 and 150. Therefore, the transmission unit is driven to rotate and drive the transmission unit. The variable torque is applied to each axis, and the test can be performed under conditions close to the actual driving state of the car.

As shown in the transmission unit, when a torque test is performed through a device such as a gear connected to the input shaft I and the output shaft O, the magnitudes of the torques applied to the input shaft I and the output shaft O are not the same. Therefore, in order to more accurately grasp the state of the test object T1 during the torque test, it is desirable to measure the torque individually on the input shaft I side and the output shaft O side. In this embodiment, as described above, since the torque sensor is provided in both the first driving section 3110 and the second driving section 3120, the input shaft I side and the output shaft of the transmission unit (subject T1) can be used. The torque is measured individually on the O side.

In addition, the above-mentioned example is constituted by driving the input shaft I side of the transmission unit at a constant speed and applying torque to the output shaft O side. However, the present invention is not limited to the above-mentioned example, that is, a constant-speed rotation may be configured. The transmission unit is driven on the output shaft O side, and a variable torque is applied on the input shaft I side. Alternatively, both the input shaft I side and the output shaft O side of the transmission unit may be configured to be rotationally driven with a variable number of revolutions. In addition, it is also possible to configure not to control the number of revolutions, but to control only the torque of each axis. In addition, it can also be configured to change the torque and the number of revolutions according to a specified waveform. The torque and the number of revolutions can be changed according to an arbitrary waveform generated by the function generator, for example. In addition, the torque and the number of revolutions of each axis of the subject T1 can be controlled based on the waveform data of the torque and the number of revolutions measured during the actual driving test.

The torque test device 3100 of this embodiment is formed so as to be able to correspond to transmission units of various sizes to form an adjustable gap between the chuck devices 3116 and 3126. Specifically, the movable plate 3111 of the first driving portion 3110 can clamp the base 3110b by a movable plate driving mechanism (not shown). The disk device 3116 moves in the direction of the rotation axis (left-right direction in the twenty-sixth figure). In addition, during the rotational torque test, the movable plate 3111 is firmly fixed to the base 3110b by a locking mechanism (not shown). The second driving unit 3120 also includes a movable plate driving mechanism similar to that of the first driving unit 3110.

The torque test device 3100 of the thirteenth embodiment of the present invention described above is a person who performs a torque test on a FR vehicle transmission unit. However, the present invention is not limited to the configuration of the basic example of the thirteenth embodiment. A device for performing a rotational torque test of other power transmission mechanisms is also included in the present invention. The first, second, and third modification examples of the thirteenth embodiment of the present invention described below are torque test devices suitable for testing the transmission unit, differential gear unit, and 4WD vehicle transmission unit of FF vehicles, respectively. Constitution example.

(First modification of the thirteenth embodiment)

The twenty-eighth figure is a top view of a torque test device 3200 according to a first modification of the thirteenth embodiment of the present invention. As described above, this modified example is a configuration example of a torque test device suitable for a rotational torque test of a test unit T2 using a transmission unit for an FF vehicle. The test body T2 is a transmission unit with a built-in differential gear, and has an input shaft I, a left output shaft OL, and a right output shaft OR.

The torque test device 3200 according to this modification includes a first driving section 3210 that drives the input shaft I of the subject T2, a second driving section 3220 that drives the left output shaft OL, and a third driving section 3230 that drives the right output shaft OR. In addition, the torque test device 3200 includes a control unit C3a that comprehensively controls its operation. Since the structures of the first driving section 3210, the second driving section 3220, and the third driving section 3230 are the same as those of the first driving section 3110 and the second driving section 3120 of the basic example of the thirteenth embodiment described above, the repeated description is omitted. Explanation of specific structure.

The torque test device 3200 of this modification is used to perform the torque test of the test object T2. During the force test, for example, the first driving section 3210 drives the input shaft I at a specified number of revolutions, and the second driving section 3220 and the third driving section 3230 simultaneously rotate and drive the left output shaft OL by applying a specified torque. And the right output shaft OR.

As described above, by controlling the first driving section 3210, the second driving section 3220, and the third driving section 3230, the transmission unit is rotationally driven, and by applying variable torque to each axis of the transmission unit, the actual vehicle can be approached Test under driving conditions.

In addition, the transmission unit tested by using the torque test device 3200 of this modification is a device that connects the input shaft I, the left output shaft OL, and the right output shaft OR via gears and the like, and applies the torque test to the input shaft I does not match the magnitude of the torque on the left output shaft OL and the right output shaft OR. In addition, the torques applied to the left output shaft OL and the right output shaft OR are not limited to be the same. Therefore, in order to more accurately grasp the state of the subject T2 during the torque test, it is desirable to individually measure the torques applied to the input shaft I, the left output shaft OL, and the right output shaft OR. In this modification, since the first driving section 3210, the second driving section 3220, and the third driving section 3230 are all provided with a torque sensor, each input can be individually measured and applied to the transmission unit (subject T2). Torque of the shaft I, the left output shaft OL, and the right output shaft OR.

In addition, the second driving unit 3220 and the third driving unit 3230 may be controlled such that the torque of the left output shaft OL and the torque of the right output shaft OR draw the same waveform, or the drawing may be different. For example, the waveform of the inverse phase is controlled by the first driving section 3210, the second driving section 3220, and the third driving section 3230.

In addition, the left output shaft OL and the right output shaft OR may be driven to rotate at a constant speed, and the input shaft I may be driven in such a manner that the speed fluctuates in a certain period. Alternatively, all of the input shaft I, the left output shaft OL, and the right output shaft OR may be configured to be driven so that the number of revolutions varies.

(Second Modification of the Thirteenth Embodiment)

Next, a second modification of the thirteenth embodiment of the present invention will be described. The nineteenth figure is a top view of a torque test device 3300 of this modification. This modification is a configuration example of a torque test device suitable for a rotational torque test using the differential gear unit for an FR vehicle as the subject T3. As in the first modification, the subject T3 includes an input shaft I, a left output shaft OL, and a right output shaft OR.

The torque test device 3300 of the present modification includes a first drive section 3310 that drives the input shaft I of the subject T3, a second drive section 3320 that drives the left output shaft OL, and a third drive section 3330 that drives the right output shaft OR. In addition, the torque test device 3300 includes a control unit C3b that comprehensively controls its operation. Since the structures of the first driving section 3310, the second driving section 3320, and the third driving section 3330 are the same as those of the first driving section 3110 and the second driving section 3120 of the basic example of the thirteenth embodiment, the repeated details are omitted. Description of composition.

When the torque test of the subject T3 is performed by the torque test device 3300 of this modification, for example, the input shaft I is driven by the first drive unit 3310 at a specified number of revolutions, and the second drive unit 3320 and the third drive unit are simultaneously driven. 3330 is driven by applying torque to the left output shaft OL and the right output shaft OR, respectively.

As described above, by controlling the first driving section 3310, the second driving section 3320, and the third driving section 3330, the axes of the test body T3 are rotationally driven, and the varying torque is applied to the axes of the test body T3. This allows testing under conditions that are close to actual use.

Similar to the transmission unit, the differential gear unit is a device that connects the input shaft I, the left output shaft OL, and the right output shaft OR via a gear or the like, and the torque applied to the input shaft I is measured when the rotational torque test is performed. It does not match the amount of torque applied to the left output shaft OL and the right output shaft OR. In addition, the amount of torque applied to the left output shaft OL and the right output shaft OR is also large. Not limited to be consistent. Therefore, in order to more accurately grasp the state of the subject T3 during the torque test, the torque of the input shaft I, the left output shaft OL, and the right output shaft OR should be individually measured. In this modification, since the first driving unit 3310, the second driving unit 3320, and the third driving unit 3330 are all provided with a torque sensor, they can be individually measured and applied to the differential gear unit (subject T3). The torque of the input shaft I, the left output shaft OL, and the right output shaft OR.

In addition, the second driving section 3320 and the third driving section 3330 may be controlled so that the number of revolutions of the input shaft I and the number of revolutions of the left output shaft OL and the right output shaft OR are the same, or two The second driving section 3320 and the third driving section 3330 are controlled in such a manner that different waveforms are drawn (for example, the speed difference from the input shaft I is in reverse phase).

In addition, the left output shaft OL and the right output shaft OR may be driven to rotate at a constant speed, and the input shaft I may be driven in such a manner that the speed fluctuates in a certain period. Alternatively, all of the input shaft I, the left output shaft OL, and the right output shaft OR may be configured to be driven so that the number of revolutions varies.

(Third Modification of Thirteenth Embodiment)

FIG. 20 is a top view of a torque test device 3400 according to a third modification of the thirteenth embodiment of the present invention. The torsion test device 3400 of this modification is a configuration example of a torsion test device suitable for the torsion test of the subject T4 having four rotation axes. In the following, the case where the 4WD system is used as the subject T4 for testing is described as an example. The test body T4 is an FF Based electronically controlled 4WD system with a drive shaft, a front differential gear, a transmission device, and an electronically controlled multi-plate clutch. The test subject T4 has an input shaft I connected to the engine, a left output shaft OL and a right output shaft OR connected to drive shafts for left and right front wheels, and a rear output shaft OP connected to a propeller shaft that transmits power to the rear wheels. The driving force for inputting the subject T4 from the input shaft I is decelerated by the transmission shaft provided in the subject T4, and then distributed to the left output shaft OL and the right output through the front differential gear. Axis OR. A part of the driving force transmitted to the front differential gear is divided by the transmission device, and is output from the rear output shaft OP.

The torque test device 3400 of this modification includes a first drive portion 3410 that drives the input shaft I of the subject T4, a second drive portion 3420 that drives the left output shaft OL, a third drive portion 3430 that drives the right output shaft OR, and a drive. The fourth drive portion 3440 of the rear output shaft OP. In addition, the torque test device 3400 includes a control unit C3c that comprehensively controls its operation. The structures of the first driving section 3410, the second driving section 3420, the third driving section 3430, and the fourth driving section 3440 are the same as those of the first driving section 3110 and the second driving section 3120 of the basic example of the thirteenth embodiment. Therefore, the description of the repeated specific structure is omitted.

(Fourteenth embodiment)

The first to thirteenth embodiments described above are connected to a servo motor 150B having one output shaft and use the dual-shaft output servo motor 150A of the embodiment of the present invention. However, as described below, the fourteenth embodiment of the present invention may also be used. Use the servo motor 150B alone.

The thirty-first figure is a side view of a torque test device 4000 of the fourteenth embodiment of the present invention. The torque test device 4000 is a device that can only perform the rotation torque test of two test objects T3a, T3b using only one dual-axis output servo motor 150A. The torque test device 4000 includes a fixed base 4100, a driving portion 4200, a first reaction force portion 4400A, a second reaction force portion 4400B, and a control unit C4.

The thirty-second figure is an enlarged view of the driving section 4200. The drive unit 4200 includes a dual-axis output servo motor 150A, and a pair of drive transmission units 4200A and 4200B. The dual-axis output servo motor 150A is connected to the control unit C4, and the drive is controlled by the control unit C4. The drive transmission units 4200A and 4200B respectively output the first output shaft 150A2a and the second output shaft of the dual-axis output servo motor 150A. The rotation of 150A2b is decelerated and transmitted to the input shafts of the test objects T3a and T3b. Since the drive transmission unit 4200A has the same configuration as the drive transmission unit 4200B, only the detailed configuration of one drive transmission unit 4200A will be described.

The drive transmission unit 4200A includes a frame 4210, a reducer 4220, a pulley 4230, a timing belt 4240, a rotary encoder 4250, and a chuck device 4260. The frame 4210 is a corner (L-shaped) frame mounted on the fixed base 4100, and includes a bottom plate 4212 of a flat plate horizontally arranged on the fixed base 4100, and a vertical plate 4214 of the flat plate standing upright from the upper end of the bottom plate 4212. And a pair of ribs 4216 connected perpendicularly to the bottom plate 4212 and the vertical plate 4214. The bottom plate 4212, the vertical plate 4214, and the rib plate 4216 are connected to each other by welding. The vertical plate 4214 is arranged perpendicular to the first output shaft 150A2a of the dual-axis output servo motor 150A, and has an opening portion 4214a formed coaxially with the first output shaft 150A2a. A reduction gear 4220 is inserted into the opening 4214a of the vertical plate 4214 and fixed.

A first bracket 150A3 of a biaxial output servo motor 150A is mounted on the input-side flange plate 4224 of the reducer 4220 with a bolt. The first bracket 150A3 is fixed to the input-side flange plate 4224 via a reinforcing plate 4212 through a plug hole 150A3t provided in the first bracket 150A3 in addition to the mounting seat surface (the right side surface of the thirty-first figure). Thereby, the input-side flange plate 4224 of the reducer 4220 and the first bracket 150A3 of the dual-axis output servo motor 150A are connected with high rigidity, and a high-precision test can be performed.

The first output shaft 150A2a of the dual-axis output servo motor 150A is connected to an input shaft (not shown) of the reducer 4220. A chuck device 4260 is mounted on a front end portion of the output shaft 4228 of the speed reducer 4220. An input shaft of the test body T3a is mounted on the chuck device 4260. The rotation of the first output shaft 150A2a of the dual-axis output servo motor 150A is reduced by the reducer 4220 to increase the torque, and then transmitted to the input shaft of the test body T3a through the chuck device 4260.

The reducer 4220 is provided with a fuel cup 4222, and the reducer 4220 is filled with lubricating oil. The internal space allows the gears constituting the reducer 4220 to be completely immersed in the lubricating oil at any time. During the torque test, because the reciprocating torque load in the common area is applied to the test object, the angle of twisting the test object is at most about 10 °. Even if the input shaft of the reducer repeatedly rotates, the amplitude is often less than 1 cycle (360 °). . By filling the internal space of the reducer 4220 with lubricating oil, even in this type of use, the gear mechanism constituting the reducer can be prevented from lacking an oil film, and the heat dissipation effect of the lubricating oil is improved, and sintering of the tooth surface is effectively prevented.

A pulley 4230 is provided on the outer periphery of the output shaft 4228. In addition, a rotary encoder 4250 is disposed on the vertical plate 4214 of the frame 4210 and below the speed reducer 4220. The timing belt 4240 is wound on the pulley 4252 installed on the input shaft of the rotary encoder 4250 and the pulley 4230 installed on the output shaft 4228 of the reducer 4220. The rotation of the output shaft 4228 of the reducer 4220 is transmitted to the rotation through the timing belt 4240. Encoder 4250 for detection. The rotary encoder 4250 is connected to a control unit C4, and transmits a signal showing the rotation detected by the rotary encoder 4250 to the control unit C4.

Next, the first reaction force portion 4400A will be described. The configuration of the second reaction force portion 4400B is the same as that of the first reaction force portion 4400A. Therefore, detailed description is omitted.

The first reaction force portion 4400A includes a frame 4410, a torque sensor 4420, a mandrel 4440, a bearing portion 4460, and a chuck device 4480. The frame 4410 is an angle (L-shaped) frame that is mounted on the fixed base 4100 with bolts B, and includes a chassis portion 4412 horizontally disposed on the fixed base 4100. The left end of the figure) a vertical plate 2414 of the upright flat plate, and a pair of rib plates 2416 vertically connected to one of the chassis portion 4412 and the vertical plate 2414. The chassis portion 4412, the vertical plate 2414, and the rib plate 2416 are connected to each other by welding. In addition, the bearing portion 4460 is fixed to the chassis portion 4412 with a bolt B on a side closer to the driving portion 4200 than the vertical plate 2414 and the rib plate 2416.

The fixed base 4100 is provided with a first reaction force portion 4400A for biaxial output. The first reaction force portion moving mechanism (not shown) that smoothly moves the direction of the first output shaft 150A2a of the servo motor 150A, loosens the bolt B fixed to the fixed base 4100 on the chassis portion 4412, and makes the first The reaction force portion moving mechanism operates to smoothly move the first reaction force portion 4400A in the direction of the first output shaft 150A2a. In addition, the fixed base 4100 also includes a second reaction force portion moving mechanism (not shown) that smoothly moves the second reaction force portion 4400B in the direction of the second output shaft 150A2b of the biaxial output servo motor 150A.

The torque sensor 4420, the mandrel 4440, the bearing portion 4460, and the chuck device 4480 are arranged coaxially with the first output shaft 150A2a of the dual-axis output servo motor 150A, respectively. One end portion of the torque sensor 4420 (the left end portion of the thirty-first figure) is fixed to the vertical plate 2414 of the frame 4410. In addition, one end of the spindle 4440 (the left end of the thirty-first figure) is fixed to the other end of the torque sensor 4420, and a chuck device 4480 is mounted to the other end of the spindle 4440. An output shaft of the test body T3a is mounted on the chuck device 4480.

The torque of the output shaft of the subject T3a is transmitted to the torque sensor 4420 through the chuck device 4480 and the spindle 4440 for detection. The torque sensor 4420 is connected to the control unit C4, and a signal indicating the output shaft torque of the test object T3a detected by the torque sensor 4420 is transmitted to the control unit C4 for processing.

The mandrel 4440 is rotatably supported by a bearing portion 4460 near the other end portion (the end portion on the chuck device 4480 side). Therefore, since the torque sensor 4420 and the spindle 4440 are supported by both the vertical plate 2414 and the bearing portion 4460, it is prevented that the torque sensor is caused by applying a large bending moment to the torque sensor 4420. The detection error of 4420 becomes large.

When the torque test is performed using the torque test device 4000 configured as described above, as described above, the input shaft of the test body T3a is mounted on the chuck device 4260 of the drive transmission unit 4200A. The output shaft of the test body T3a is mounted on the chuck device 4480 of the first reaction force portion 4400A. Similarly, the input shaft of the test body T3b is mounted on the chuck device 4260 of the drive transmission portion 4200B, and the output shaft of the test body T3b is mounted on the chuck device 4480 of the second reaction force portion 4400B. When the dual-axis output servo motor 150A is driven in this state, the first output shaft 150A2a and the second output shaft 150A2b are rotated at the same phase, and the chuck device 4260 of the drive transmission section 4200A and the drive transmission section 4200B are also rotated at the same phase. Therefore, the same torsional force is applied to the test objects T3a and T3b, that is, the torsion test of the test objects T3a and T3b is performed under the same conditions.

According to the structure of the fourteenth embodiment described above, the torque test (fatigue test) of two test objects T3a and T3b can be performed simultaneously using one servo motor and the control unit C4, so the test can be performed efficiently.

In addition, for example, a linear converter such as a feed screw mechanism may be provided instead of the drive transmission units 4200A and 4200B, so that compressive force and tensile force may be repeatedly applied to the two test objects T3a and T3b (or, to the test object). One of T3a and T3b is a tensile and compression test device that applies compressive force to the other. With this configuration, it is possible to repeatedly perform a stretching test on the two subjects T3a and T3b (or a tensile test on the subject T3a and a compression test on the subject T3b). In addition, at this time, by not using the first reaction force portion 4400A and the second reaction force portion 4400B, the vibration test of two test objects T3a and T3b can be performed simultaneously.

(Fifteenth embodiment)

The dual-axis output servo motor 150A and the servo motor unit 150 according to the embodiment of the present invention can also be combined with a linear converter such as a feed screw mechanism and used as a drive source of a linear actuator. By using such a linear actuator, for example, an excitation test device or a tensile and compression test device can be realized.

Figure 33 is a top view of a vibration test device (excitation device) 5000 of a fifteenth embodiment of the present invention. The vibration test device 5000 of this embodiment fixes the workpiece of the vibration test object on the platform 5100, and uses the first, second, and third actuators 5200, 5300, and 5400 to orthogonally adjust the platform 5100 and the workpiece on the platform 5100. Excitation in the axial direction. In addition, in the following description, the direction of the first actuator 5200 to excite the stage 5100 (upper and lower directions in Fig. 33) is defined as the X-axis direction, and the direction of the second actuator 5300 to excite the stage 5100 ( The left-right direction in Figure 33) is defined as the Y-axis direction, and the direction of the third actuator 5400 excitation platform, that is, the vertical direction (the direction perpendicular to the paper surface in Figure 33) is defined as the Z-axis. direction.

The thirty-eighth figure is a block diagram of a control system of a vibration testing device according to an embodiment of the present invention. Vibration sensors 5220, 5320, and 5420 are provided in the first, second, and third actuators 5200, 5300, and 5400, respectively. Based on the output of these vibration sensors, the control unit C5 controls the first, second, and third actuators 5200, 5300, and 5400 (specifically, the servo motor units 150X, 150Y, and 150Z) by feedback. The specified amplitude and frequency (these parameters are usually set as a function of time) excite the platform 5100 and the workpiece mounted on it. The servo motor units 150X, 150Y, and 150Z are the same as the servo motor unit 150 of the first embodiment.

The first, second, and third actuators 5200, 5300, and 5400 have a configuration in which a motor, a power transmission member, and the like are mounted on a substrate 5202, 5302, and 5402, respectively. The substrates 5202, 5302, and 5402 are fixed to the device base 5002 by bolts (not shown).

In addition, on the device base 5002, an adjuster A is disposed at a plurality of positions close to the substrate 5202, 5302, and 5402. The adjuster A includes a female screw portion A1 fixed to the device base 5002 with a bolt AB, and a male screw portion A2 screwed into the female screw portion A1. The male screw portion A2 is a cylindrical member in which a thread is formed on a cylindrical surface, and the male screw portion A2 is coupled to a female screw. The threaded hole of the texture portion A1 is rotated, so that the male thread portion A2 can advance and retreat to the corresponding substrate. One end portion of the male screw portion A2 (on the side of the corresponding substrate near orientation) is formed into a substantially spherical shape, and the position of the substrate can be finely adjusted by contacting the protruding portion with the side of the corresponding substrate. In addition, a hexagonal hole (not shown) for a hexagonal wrench is formed at the other end of the male screw portion A2 (the side corresponding to the far side of the corresponding substrate). In addition, once the substrate 5202, 5302, and 5402 are fixed, the nut A3 is mounted on the male screw portion A2 to prevent the male screw portion A2 from loosening due to vibration transmitted from the substrate to the adjuster A through a vibration test. The nut A3 is installed in such a manner that one end surface thereof abuts the female screw portion A1. From this state, the nut A3 is screwed into the female screw portion A1, and an axial force is applied to the male screw portion A2 and the female screw portion A1. The frictional force generated between the male screw portion A2 and the female screw portion A1 by the axial force prevents the female screw portion A1 from being loosened from the male screw portion A2.

Next, the configuration of the first actuator 5200 will be described. The thirty-fourth figure is a side view of the first actuator 5200 according to the embodiment of the present invention as viewed from the Y-axis direction (the thirty-third figure is from the right to the left). The test chart is partially missing to show the internal structure. In addition, the thirty-fifth figure is a part of the top view of the first actuator 5200 lacking and shows the internal constructor. In the following description, a direction along the X axis from the first actuator 5200 toward the stage 5100 is defined as a “positive X axis direction”, and a direction along the X axis from the stage 5100 toward the first actuator is defined. The direction is defined as the "negative direction of the X axis".

As shown in FIG. 34, a frame 5222 composed of a plurality of beams 5222a and a top plate 5222b welded to each other is fixed to the base plate 5202 by welding. In addition, a bottom plate 5242 of a support mechanism 5240 for supporting the driving mechanism 5210 for the excitation platform 5100 (Fig. 33) and the supporting mechanism 5240 for transmitting the excitation motion of the driving mechanism 5210 to the platform 5100, It is fixed to the top plate 5222b of the frame 5222 via a bolt (not shown).

The drive mechanism 5210 includes a servo motor unit 150X, a coupler 5260, a bearing portion 5216, a ball screw 5218, and a ball nut 5219. The coupler 5260 connects the drive shaft 152X of the servo motor unit 150X and the ball screw 5218. In addition, the bearing portion 5216 is supported by a bearing support plate 5244 fixed by welding vertically to the bottom plate 5242 of the support mechanism 5240, and the ball screw 5218 is rotatably supported. The ball nut 5219 does not move around its shaft, is supported by a bearing support plate 5244, and is combined with a ball screw 5218. Therefore, when the servo motor unit 150X is driven, the ball screw rotates, and the ball nut 5219 advances and retreats in the axial direction (that is, the X-axis direction). The movement of the ball nut 5219 is transmitted to the platform 5100 through the connection mechanism 5230, and the platform 5100 is driven in the X-axis direction. Then, by controlling the servo motor unit 150X by switching the rotation direction of the servo motor unit 150X with a short period, it is possible to excite the platform 5100 in the X axis direction with a desired amplitude and period.

Above the bottom plate 5242 of the support mechanism 5240, the motor support plate 5246 is welded perpendicularly to the bottom plate 5242. On one surface of the motor support plate 5246 (the surface on the negative side of the X axis), the servo motor unit 150X is cantilevered so that the drive shaft 152X is perpendicular to the motor support plate 5246. The motor support plate 5246 is provided with an opening 5246a, and the drive shaft 152X of the servo motor unit 150X passes through the opening 5246a, and is connected to the ball screw 5218 on the other side of the motor support plate 5246.

In addition, since the servo motor unit 150X is cantilevered and supported by the motor support plate 5246, a large bending stress is applied to the motor support plate 5246, particularly a welding portion with the base plate 5242. In order to reduce this bending stress, a rib 5248 is provided between the bottom plate 5242 and the motor support plate 5246.

The bearing portion 5216 has one of the diagonal contact ball bearings 5216a and 5216b (the one on the negative side of the X axis is 5216a and the other on the positive side of the X axis is 5216b). The angular contact ball bearings 5216a and 5216b are housed in the hollow portion of the bearing support plate 5244. In angular contact The ball bearing 5216b is provided with a bearing pressing plate 5216c on one side (the surface on the positive side of the X axis). The bearing pressing plate 5216c is fixed to the bearing support plate 5244 by using a bolt 5216d, and the angular contact ball bearing 5216b is pressed into the X axis. Negative direction. In the ball screw 5218, a threaded portion 5218a is formed on a cylindrical surface of the pair of bearing portions 5216 adjacent to the negative side of the X axis. A collar 5217 having a female screw formed on the inner periphery thereof can be attached to the screw portion 5218a. The angular contact ball bearing 5216a is pressed into the positive X-axis direction by rotating the collar 5217 to the ball screw 5218 to move in the positive X-axis direction. In this way, since the angular contact ball bearings 5216a and 5216b are pressed in directions close to each other, the two are in close contact with each other to impart appropriate preload to the bearings 5216a and 5216b.

Next, the configuration of the connecting portion 5230 will be described. The connecting portion 5230 includes a nut guide 5322, a pair of Y-axis rails 5234, a pair of Z-axis rails 5235, an intermediate stage 5231, a pair of X-axis rails 5237, a pair of X-axis rotor blocks 5233, and a rotor. Block mounting member 5238.

The nut guide 5232 is fixed to the ball nut 5219. In addition, a pair of Y-axis rails 5234 are rails that project together in the Y-axis direction, and the ends of the nut guide 5232 on the X-axis positive direction side are fixed in parallel in the up-down direction. In addition, a pair of Z-axis rails 5235 are rails that extend together in the Z-axis direction, and the ends on the negative X-axis side of the platform 5100 are fixed in parallel in the Y-axis direction. The intermediate stage 5231 is provided with a Y-axis rotor block 5231a combined with each of the Y-axis orbits 5234 on the side of the negative side of the X-axis, and a Z-axis rotor block 5231b combined with each of the Z-axis orbits 5235 is provided on the X-axis. The square on the side of the positive direction is configured to be slidable with respect to both the Y-axis rail 5234 and the Z-axis rail 5235.

That is, the intermediate stage 5231 can slide in the Z-axis direction to the platform 5100, and the nut guide 5232 can slide in the Y-axis direction. Therefore, the intermediate stage 5231 can slide the platform 5100 in the Y-axis direction and the Z-axis direction. Therefore, even if the platform 5100 is excited in the Y-axis direction and / or the Z-axis direction by other actuators 5300 and / or 5400, the nut guide 5232 will not be displaced due to this. that is, The bending stress caused by the displacement of the platform 5100 in the Y-axis direction and / or the Z-axis direction is not applied to the ball screw 5218 or the bearing portion 5216, the coupler 5260, and the like.

A pair of X-axis rails 5237 are rails that extend together in the X-axis direction, and are fixed in parallel in the Y-axis direction on the bottom plate 5242 of the support mechanism 5240. The X-axis rotor block 5233 is combined with each of the X-axis rail 5237, and can slide along the X-axis rail 5237. The rotor block mounting member 5238 is a member fixed to the bottom surface of the nut guide 5232 so as to protrude toward both sides in the Y-axis direction, and the X-axis rotor block 5233 is fixed to the bottom of the rotor block mounting member 5238. In this way, the nut guide 5232 is guided to the X-axis rail 5237 via the rotor block mounting member 5238 and the X-axis rotor block 5233, and thereby can be moved only in the X-axis direction.

In this way, because the movement direction of the nut guide 5232 is limited to the X-axis direction, when the servo motor unit 150X is driven to rotate the ball screw 5218, the nut guide 5232 and the platform 5100 combined with the nut guide 5232 are at X axis direction forward and backward.

A position detection means 5250 is disposed on one side surface (the proximal end side in the thirty-fourth figure and the right side in the thirty-fifth figure) of the rotor block mounting member 5238 on the Y-axis direction side. The position detecting means 5250 includes three proximity sensors 5251 arranged at a certain interval in the X-axis direction, a detection board 5252 provided on a side surface 5238a of the rotor block mounting member 5238, and a sensor support supporting the proximity sensor 5251. Board 5253. The proximity sensor 5251 is a component that can detect whether an object approaches (for example, within 1 mm) before each proximity sensor. Since the side surface 5238a of the rotor block mounting member 5238 is sufficiently separated from the proximity sensor 5251, the proximity sensor 5251 can detect whether there is a detection board 5252 before each of the proximity sensors 5251. The control unit C5 of the vibration testing device 5000 can feedback control the servo motor unit 150X using the detection result of the proximity sensor 5251 (Figure 38).

In addition, the bottom plate 5242 of the support mechanism 5240 is provided with a control block 5236 that sandwiches the X-axis rotor block 5233 from both sides in the X-axis direction. The control block 5236 is used to limit the movement range of the nut guide 5232. That is, when the servo motor unit 150X is driven and the nut guide 5232 continues to move in the positive direction of the X axis, the control block 5236 disposed on the side of the positive direction of the X axis finally contacts the rotor block mounting member 5238, and the nut guide 5232 cannot be used. Excessive movement in the positive X-axis direction. The same applies when the nut guide 5232 is further moved in the negative direction of the X axis. The control block 5236 arranged on the negative side of the X axis is in contact with the rotor block mounting member 5238, and the nut guide 5232 cannot be excessively moved in the negative direction of the X axis.

The first actuator 5200 and the second actuator 5300 described above have the same structure except that the installation directions are different (X-axis and Y-axis are interchanged). Therefore, detailed description of the second actuator 5300 is omitted.

Next, the structure of the third actuator 5400 according to the embodiment of the present invention will be described. The thirty-sixth figure is a side view of the platform 5100 and the third actuator 5400 viewed from the X-axis direction (from above and below the sixteenth figure). This side view also lacks part to show the internal structure. In addition, the thirty-seventh figure is a side view of the platform 5100 and the third actuator 5400 according to the embodiment of the present invention viewed from the Y-axis direction (from the left side to the right side of the thirty-third figure). The thirty-seventh figure is also missing a part to show the internal structure. In the following description, the direction along the Y axis from the second actuator 5300 toward the platform 5100 is defined as the positive Y axis direction, and the direction along the Y axis from the platform 5100 toward the second actuator 5300 is defined. The direction of is defined as the negative direction of the Y axis.

As shown in FIG. 36 and FIG. 37, a frame 5422 is formed on the base plate 5402 by a plurality of beams 5422a extending vertically, and a top plate 5422b arranged to cover the plurality of beams 5422a from above. . The lower end of each beam 5422a is welded to the upper surface of the substrate 5402, and the upper end is welded to the lower surface of the top plate 5422b. In addition, the bearing support plate 5442 of the support mechanism 5440 is not shown in the figure. The bolts are fixed to the top plate 5422b of the frame 5422. This bearing support plate 5442 is a member for supporting the driving mechanism 5410 for exciting the platform 5100 (Figure 33) in the vertical direction, and the connecting mechanism 5430 for transmitting the excitation motion of the driving mechanism 5410 to the platform. .

The drive mechanism 5410 includes a servo motor unit 150Z, a coupler 5460, a bearing portion 5416, a ball screw 5418, and a ball nut 5419. The coupler 5460 connects the drive shaft 152Z of the servo motor unit 150Z and the ball screw 5418. In addition, the bearing portion 5416 is fixed to the aforementioned bearing support plate 5442 and rotatably supports the ball screw 5418. The ball nut 5419 does not move around its shaft, is supported by a bearing support plate 5442, and is combined with a ball screw 5418. Therefore, when the servo motor unit 150Z is driven, the ball screw rotates, and the ball nut 5419 advances and retreats in the axial direction (that is, the Z-axis direction). The movement of the ball nut 5419 is transmitted to the stage 5100 via the connection mechanism 5430, and the stage 5100 is driven in the Z-axis direction. Then, the servo motor unit 150Z is controlled by switching the rotation direction of the servo motor unit 150Z with a short period, and the stage 5100 can be excited in the Z-axis direction (up and down direction) with a desired amplitude and period.

A motor support plate 5446 extending in the horizontal direction (XY plane) is fixed from below the bearing support plate 5442 of the support mechanism 5440 via two connection plates 5443. The servo motor unit 150Z is hung and fixed under the motor support plate 5446. The motor support plate 5446 is provided with an opening portion 446a, and the drive shaft 152Z of the servo motor unit 150Z passes through the opening portion 446a, and is connected to the ball screw 5418 on the upper surface side of the motor support plate 5446.

In addition, in this embodiment, since the size of the servo motor unit 150Z in the axial direction (up and down direction, Z axis direction) is larger than the height of the frame 5422, most of the servo motor unit 150Z is disposed at a position lower than the substrate 5402. Therefore, the device base 5002 is provided with a hollow portion 5002a for accommodating the servo motor unit 150Z. In addition, a servo motor is provided in the substrate 5402. The unit 150Z passes through the opening 5402a.

The bearing portion 5416 is provided through the bearing support plate 5442. In addition, since the structure of the bearing portion 5416 is the same as that of the bearing portion 5216 (34th and 35th drawings) in the first actuator 5200, detailed description is omitted.

Next, the configuration of the connecting portion 5430 will be described. The connecting portion 5430 includes a movable frame 5432, a pair of X-axis rails 5434, a pair of Y-axis rails 5435, a plurality of intermediate stages 5431, two pairs of Z-axis rails 5437, and two pairs of Z-axis rotor blocks 5433.

The movable frame 5432 includes a frame portion 5432a fixed to the ball nut 5419, a top plate 5432b fixed to the upper end of the frame portion 5432a, and a side wall 5432c extending downward from both edges in the X-axis direction of the top plate 5432b. A pair of Y-axis rails 5435 are rails extending in the Y-axis direction, and are fixed in parallel in the X-axis direction on the top of the top plate 5432b of the movable frame 5432. In addition, a pair of X-axis rails 5434 are rails extending together in the X-axis direction, and are fixed in parallel in the Y-axis direction under the platform 5100. The intermediate stage 5431 is an upper part of an X-axis rotor block 5431a combined with an X-axis orbit 5434, and a lower-axis Y-axis rotor block 5431b combined with each of the Y-axis orbits 5435 is provided. Both the axis track 5434 and the Y-axis track 5435 slide. The intermediate stage 5431 is provided at each position where the X-axis rail 5434 and the Y-axis rail 5435 intersect. Since two X-axis rails 5434 and Y-axis rails 5435 are provided respectively, the X-axis rail 5434 and the Y-axis rail 5435 cross at four places. Therefore, in this embodiment, four intermediate stages 5431 are used.

In this way, each intermediate stage 5431 can slide in the X-axis direction to the platform 5100, and can slide in the Y-axis direction to the movable frame 5432. That is, the movable frame 5432 can slide the platform 5100 in the X-axis direction and the Y-axis direction. Therefore, even if the platform 5100 is excited in the X-axis direction and / or the Y-axis direction by other actuators 5200 and / or 5300, the movable frame 5432 will not be displaced due to this. That is, the bending stress caused by the displacement of the stage 5100 in the X-axis direction and / or the Y-axis direction is not applied to the ball screw 5418 or the bearing portion 5416, the coupler 5460, and the like.

In addition, in this embodiment, since the platform 5100 and the workpiece having a relatively large weight are supported on the movable frame 5432, the interval between the X-axis rail 5434 and the Y-axis rail 5435 is longer than that of the Y-axis rail 5234 and the first actuator 5200. Z axis track is 5235 wide. Therefore, similarly to the first actuator 5200, when the platform 5100 and the movable frame 5432 are connected by only one intermediate stage, the intermediate stage becomes large, and the load applied to the movable frame 5432 increases. Therefore, in this embodiment, a small intermediate stage 5431 is arranged at each part where each of the X-axis rail 5434 and the Y-axis rail 5435 intersect, so that the magnitude of the load applied to the movable frame 5432 is minimized as necessary. limit.

Two pairs of Z-axis rails 5437 are rails extending in the Z-axis direction, and each side wall 5432c of the movable frame 5432 is juxtaposed in the Y-axis direction and each pair is fixed. The Z-axis rotor block 5433 is combined with each of the Z-axis orbits 5437 and can slide along the Z-axis orbits 5437. The Z-axis rotor block 5433 is fixed to the upper surface of the top plate 5422 b of the frame 5422 via a rotor block mounting member 5438. The rotor block mounting member 5438 has a side plate 5438a arranged approximately parallel to the side wall 5432c of the movable frame 5432 and a bottom plate 5438b fixed to the lower end of the side plate 5438a, and has an L-shaped cross-sectional shape as a whole. Further, in this embodiment, particularly when a workpiece having a high center of gravity and a heavy weight is fixed to the stage 5100, a large moment around the X-axis and / or around the Y-axis is easily applied to the movable frame 5432. Therefore, the rotor block mounting member 5438 is reinforced by the ribs to withstand the turning moment. Specifically, a pair of first ribs 5438c is provided at a corner formed by the side plate 5438a and the bottom plate 5438b at both ends in the Y-axis direction of the rotor block mounting member 5438, and a second rib 5438c is further provided between the pair of first ribs 5438c. Ribs 5438d.

In this way, the Z-axis rotor block 5433 is fixed to the frame 5422, and can be aligned with the Z-axis orbit 5437. slide. Therefore, the movable frame 5432 can slide in the up-down direction, and the movement of the movable frame 5432 outside the up-down direction is regulated. In this way, because the moving direction of the movable frame 5432 is limited only to the up-down direction, when the servo motor unit 150Z is driven to rotate the ball screw 5418, the movable frame 5432 and the platform 5100 combined with the movable frame 5432 move forward and backward.

In addition, the same position detection means (not shown) as the position detection means 5250 (FIG. 34 and FIG. 35) of the first actuator 5200 is also provided in the third actuator 5400. The control unit C5 of the vibration testing device 5000 can control the height of the movable frame 5432 to be within a specified range according to the detection result of the position detection means (Figure 38).

As described above, in this embodiment, two pairs of rails and an intermediate stage configured to slide on the rails are provided between the actuators whose drive axes are orthogonal to each other and the platform 5100. With this, the platform 5100 can slide each pair of actuators in any direction on a plane perpendicular to the driving direction of the actuators. Therefore, even if the platform 5100 is displaced due to an actuator, the load and torque generated by the displacement are not applied to other actuators, and the state where the other actuators and the platform 5100 are combined through the intermediate stage is maintained. That is, even if the platform is displaced at an arbitrary position, a state in which each actuator can displace the platform is maintained. Therefore, in this embodiment, three actuators 5200, 5300, and 5400 can be driven at the same time, and the stage 5100 and the workpiece fixed thereon can be excited in the three-axis direction.

In the present embodiment, as described above, a connection portion including a guide mechanism of a combination rail and a rotor block is provided between the actuators 5200, 5300, and 5400 and the platform 5100. In addition, the same guide mechanism is provided in the actuators 5200, 5300, and 5400, and the guide mechanism is used as a nut for guiding the ball screw mechanism of each actuator.

In the above-mentioned various embodiments, the ultra-low inertia servo motor is used in the torque generating device, but the configuration of the present invention is not limited to this. The moment of inertia of the rotor is small, The structure of other types of motors (such as variable frequency motors) driven by high acceleration or high jerk is also included in the present invention. At this time, similar to the above-mentioned various embodiments, a configuration may be adopted in which an encoder is provided in the motor, and feedback control is performed according to the rotation state (such as the number of revolutions and angular position) of the motor output shaft detected by the encoder.

In addition, the above-mentioned embodiment is mainly an example in which the present invention is applied to an endurance test device for a power transmission device for automobiles, but the present invention is not limited to this, and can be used for various applications in general industries. The present invention can be used, for example, in the evaluation of the mechanical characteristics and durability of two-wheeled vehicles, agricultural machinery, construction machinery, railway vehicles, ships, aircraft, power generation systems, water supply and drainage systems, or various parts constituting these.

The present embodiment has been described above, but the present invention is not limited to the above-mentioned constituents, and various modifications can be made within the scope of the technical idea of the present invention. For example, in the various embodiments described above, the servo motor unit 150 (or the torque imparting servo motor unit 132) that connects one (with one output shaft) servo motor 150B and one two-axis output servo motor 150A is used in two stages. However, it is also possible to use a servo motor unit having three or more stages connecting one servo motor 150B and a plurality of two-axis output servo motors 150A.

Claims (37)

A motor unit includes: a dual-shaft output motor having a first output shaft and a second output shaft; a second motor having an output shaft; and a coupler that connects the second output shaft of the aforementioned dual-shaft output motor and An output shaft of the second motor; and a drive control unit for driving the second motor and the dual-shaft output motor in the same phase, wherein the dual-shaft output motor includes: a cylindrical body frame; a first bracket; Is mounted on one end portion in the axial direction of the body frame; a second bracket is mounted on the other end portion in the axial direction of the body frame; and a first motor drive shaft is passed through the hollow portion of the body frame and penetrates the foregoing The first bracket and the second bracket are rotatably supported by bearings provided on the first bracket and the second bracket, respectively. One end portion of the first motor drive shaft is connected to the first bracket. The first output shaft with the bracket protruding outward, and the other end of the first motor drive shaft is the second output shaft with the second output shaft protruding from the second bracket, wherein the second motor includes A cylindrical second body frame; a load-side bracket that is installed at one end portion in the axial direction of the second body frame; an anti-load-side bracket that is installed at the other end portion in the axial direction of the second body frame; And a second motor drive shaft, which pass through the load-side bracket and the counter-load-side bracket through the hollow portion of the second body frame, and are respectively provided on the load-side bracket and the counter-load-side bracket One end of the second motor drive shaft is an output shaft of the second motor protruding from the load-side bracket to the outside of the second body frame, and the motor unit further includes a connecting member It connects the load-side bracket and the second bracket. For example, the motor unit of the first patent application scope, wherein the first mounting surface is formed on the opposite side of the first bracket and the second bracket opposite to each other, and the first mounting surface is provided with a plug hole. For example, the motor unit of the second scope of the patent application, wherein a second mounting surface perpendicular to the first mounting surface is formed on the first bracket and the second bracket, and the second mounting surface is used for mounting the dual-axis output motor. Plug hole. For example, the motor unit of the first scope of the patent application, wherein any one of the first bracket, the second bracket, the load-side bracket and the counter-load-side bracket is installed to detect the first motor drive shaft or In the rotary encoder for the rotation position of the second motor driving shaft, the drive control section controls the driving of the second motor and the dual-shaft output motor according to a signal output from the rotary encoder. For example, the motor unit according to the first patent application range, wherein the connection member connects the load-side bracket and the second bracket at a specified interval. For example, the motor unit of the first patent application range, wherein the aforementioned dual-shaft output motor is a servo motor. For example, the motor unit of the first patent application range, wherein the aforementioned second motor is a servo motor. A rotational torque test device includes: a first drive shaft for mounting one end of a workpiece and rotating around a designated rotation center axis; a second drive shaft for mounting the other end of the workpiece, and Rotate around the rotation center axis as a center; a load imparting part supporting the first drive shaft to drive and drive the first drive shaft together to impart a torque load to the workpiece; at least one first bearing based on the aforementioned A rotation center axis is supported rotatably to support the load imparting portion; a rotation driving portion is configured to rotationally drive the second drive shaft and the load imparting portion in the same phase; and a torque sensor that detects the torque load Wherein, the aforementioned load imparting unit is provided with a motor unit according to any one of claims 1 to 7 of the scope of patent application, and the workpiece is rotated by the aforementioned rotary drive unit via the first drive shaft and the second drive shaft. A load is applied to the workpiece by applying a phase difference to the rotation of the first drive shaft and the second drive shaft by the load applying unit. For example, the rotation torque test device according to item 8 of the patent application, wherein the load imparting portion is provided with a frame having a cylindrical shaft portion inserted into the first drive shaft. In the shaft portion, the frame is supported by the first A bearing support also supports the first drive shaft, and the torque sensor is mounted on a portion of the shaft portion inserted into the first drive shaft and detects a torque load of the portion. For example, the rotational torque test device of the eighth patent application range, wherein the rotational torque test device is provided with: a driving power supply section which is arranged outside the load applying section and supplies driving power to the motor unit; a driving power transmission path, It transmits driving power from the driving power supply unit to the motor unit; the torque signal processing unit is disposed outside the load imparting unit and processes a torque signal output from the torque sensor; and a torque signal The transmission path transmits a torque signal from the torque sensor to the torque signal processing section. The driving power transmission path includes: an external driving power transmission path that is disposed outside the load imparting section; and is internally driven. The power transmission path is disposed inside the load imparting portion and rotates together with the load imparting portion; and the first slip ring portion connects the external driving power transmission path and the internal driving power transmission path. The torque signal transmission path includes an external torque signal transmission path, which is arranged in The outside of the load imparting portion; an internal torque signal transmission path that is disposed inside the load imparting portion and rotates together with the load imparting portion; and a second slip ring portion that connects the external torque signal. The transmission path and the internal torque signal transmission path, wherein the second slip ring portion is disposed separately from the first slip ring portion. For example, the rotation torque test device according to item 9 of the application, wherein the frame of the load applying portion is integrally connected with the second drive shaft system. For example, the rotation torque testing device of the eighth patent application range, wherein the rotation driving unit includes: a rotation motor; and a driving force transmission unit that transmits the driving force of the rotation motor to the load applying unit and the second The driving shaft is rotated in the same phase, and the driving force transmission unit includes a first driving force transmission unit that transmits a driving force of the rotation motor to the second driving shaft; and a second driving force transmission unit. , Which transmits the driving force of the rotation motor to the load applying portion. For example, the rotation torque test device for item 12 of the patent application scope, wherein the first driving force transmission section includes: a third driving shaft, which is arranged in parallel with the rotation center axis and is driven by the rotation motor; the first drive A pulley is coaxially fixed to the third drive shaft; a first driven pulley is coaxially fixed to the load applying portion; and a first endless belt is hung between the first driving pulley and the first A driven pulley, wherein the second driving force transmission unit includes: a fourth driving shaft, which is coaxially connected to the third driving shaft; a second driving pulley, which is fixed to the fourth driving shaft; and a second driven pulley, It is fixed on the second driving shaft; and a second endless belt is hung on the second driving pulley and the second driven pulley. A torque test device for imparting torque to an input shaft and an output shaft of a test body serving as a power transmission device, comprising: a first drive section connected to the input shaft of the test body; and a second drive section , Which is connected to the output shaft of the test object, wherein the first driving section and the second driving section are provided with: a motor unit in any one of the scope of claims 1 to 7 of the patent application; a chuck, which is Install the input shaft or output shaft of the test subject and transmit the output of the motor unit to the input shaft or output shaft of the test subject; a torque sensor that outputs from the motor unit to the chuck When transmitting, the torque transmitted to the chuck is also detected; and the rotation meter is used to detect the number of revolutions of the chuck. For example, the torque test device of the scope of application for patent No. 14 includes: a mandrel that connects the torque sensor and the chuck; a bearing portion that supports the mandrel in a freely rotatable manner; and a reducer that The speed reduction of the output shaft of the motor unit is transmitted to the mandrel; wherein the speed reducer includes a gear box, a bearing, and a gear mechanism, which is supported by the gear box via the bearing, and the motor unit is The load of the gear mechanism of the speed reducer, the torque sensor, and the power transmission shaft including the mandrel transmitted to the test subject are freely rotated by the bearing portion and the bearing of the speed reducer. support. A torque test device is used for testing a first test subject and a second test subject at the same time, and includes: a dual-shaft output motor having a first output shaft and a second output shaft; and a first drive transmission unit, which The rotation of the first output shaft is transmitted to one end of the first test object; the first reaction force portion is used to fix the other end of the first test object; the second drive transmission portion is used to transmit the second The rotation of the output shaft is transmitted to one end portion of the second test object; and a second reaction force portion which fixes the other end portion of the second test object, wherein the first drive transmission portion and the second drive transmission portion A chuck device is provided for mounting one end of the first test object or the second test object, and the first reaction force part and the second reaction force part are provided with a chuck device for mounting the first receiver. At the other end of the test body or the second test body, the dual-shaft output motor includes: a cylindrical body frame; and a roughly flat first bracket, which is mounted on one end portion of the body frame in the axial direction; Flat second A frame is installed at the other end portion in the axial direction of the main body frame; and a first motor drive shaft passes through the first bracket and the second bracket through the hollow portion of the main body frame, and is provided by The first bracket and the second bracket are rotatably supported by bearings. One end of the first motor drive shaft is the first output shaft protruding from the first bracket to the outside. The other end of a motor drive shaft is the second output shaft protruding from the second bracket to the outside, and a first mounting surface is formed on the opposite side of the first bracket and the second bracket on opposite sides of each other. , Which is equipped with plug holes. For example, the torque test device under the scope of patent application No. 16 wherein a second mounting surface perpendicular to the first mounting surface is formed on the first bracket and the second bracket, and the second mounting surface is provided for mounting the dual-axis output. Motor plug hole. For example, the torque test device of the 16th patent application range, wherein the aforementioned dual-shaft output motor is a servo motor. For example, the torque test device according to item 16 of the application, wherein at least one of the first bracket and the second bracket is provided with a rotary encoder that detects the rotation position of the first motor drive shaft. For example, the torque test device under the scope of application for patent No. 16 wherein the first reaction force portion and the second reaction force portion are respectively provided with a torque sensor, which detects the torque applied to the first subject or the second subject. Measure body torque. For example, the torque test device of the 16th patent application range, wherein the first and second drive transmission units include: a speed reducer that decelerates the rotation of the first output shaft or the second output shaft; and rotation The encoder detects the rotation of the output shaft of the aforementioned reducer. A torque test device includes: a frame; a motor unit according to any one of claims 1 to 7 of the scope of patent application, which is fixed to the aforementioned frame; and a first grip portion, which is connected to an output shaft of the aforementioned motor unit While holding one end portion of the test object; and a second holding portion, which is fixed to the aforementioned frame and holds the other end portion of the test object. For example, the torque test device of the 22nd patent application scope includes: a reduction mechanism that decelerates the rotation of the aforementioned motor unit; and a coupler that connects the output shaft of the aforementioned motor unit and the input shaft of the aforementioned reduction mechanism. A linear actuator includes: a motor unit according to any one of claims 1 to 7 of a patent application range; a feed screw connected to an output shaft of the motor unit; and a nut connected to the feed Screw combination; and linear guide, which limits the movement direction of the nut to the axis direction of the feed screw. For example, the linear actuator according to item 24 of the patent application includes: a second bearing that rotatably supports the feed screw; and a support plate that fixes the motor unit, the linear guide, and the second bearing, The motor unit is fixed on one side of the support plate, the linear guide is fixed on the other side of the support plate, and the feed screw is a ball screw. An excitation device includes: a pedestal for mounting a work piece; and a linear actuator with a scope of application for patent No. 24, which can excite the aforementioned pedestal in a first direction. An excitation device includes: a pedestal for mounting a workpiece; a first actuator for exciting the aforementioned pedestal in a first direction; and a second actuator for engaging the aforementioned pedestal in Excitation in the second direction orthogonal to the first direction; first connection means for slidingly connecting the pedestal to the first actuator in the second direction; and second connection means for connecting the pedestal The second actuator can be slidably connected in a first direction. The first actuator and the second actuator are linear actuators in the 24th area of the patent application. An excitation device includes: a pedestal for mounting a workpiece; a first actuator for exciting the aforementioned pedestal in a first direction; and a second actuator for engaging the aforementioned pedestal in The first direction orthogonally excites the second direction; the third actuator can excite the base in a third direction orthogonal to the first direction and the second direction; the first connection means , Which connects the pedestal to the first actuator slidably in the second direction and the third direction; the second connection means, which connects the pedestal to the second actuator in the first And the third direction is slidably connected; and a third connecting means is configured to slidably connect the pedestal to the third actuator in the first direction and the second direction, wherein the first actuator The aforementioned second actuator and the aforementioned third actuator are linear actuators in item 24 of the scope of patent application. A power simulator includes: a power output shaft; a control unit that controls the rotation of the power output shaft to output a simulated power that simulates a specified power; and a load imparting unit that imparts a torque instructed from the control unit The power output shaft is rotatably supported; and a rotation driving unit that rotationally drives the load applying unit at a rotation speed indicated by the control unit, wherein the load applying unit includes a motor unit, and the motor unit includes: A shaft output motor is provided with a first motor drive shaft protruding from both ends of the main body frame; and a second motor is provided with a second motor drive shaft protruding from at least one end of the main body frame. One end of the motor drive shaft is connected to the drive shaft of the second motor, the other end of the first motor drive shaft is connected to the power output drive shaft, and the control unit drives the dual shaft output motor and the second drive in the same phase. motor. For example, the power simulator of the scope of the patent application No. 29, wherein the rotation driving portion is provided with a bearing that supports the power output shaft coaxially and freely rotating with the rotation driving portion. For example, the power simulator of the 29th scope of the patent application includes a means for obtaining a rotation speed, which is to obtain the rotation speed of the aforementioned power output shaft, and the aforementioned control unit calculates Torque. For example, the power simulator of the 29th scope of the patent application includes a torque obtaining means for obtaining the torque of the aforementioned power output shaft, and the aforementioned control section controls the driving of the motor unit based on the torque of the aforementioned power output shaft. For example, the power simulator of the 32nd patent scope, wherein the aforementioned control unit calculates the torque imparted to the aforementioned power output shaft based on the torque of the aforementioned power output shaft. For example, the power simulator of the scope of application for patent No. 29, wherein the rotation driving unit includes: a rotation driving motor; and a driving force transmission unit that transmits the driving force of the rotation driving motor to the load imparting unit. For example, the power simulator of the scope of application for the patent No. 34, wherein the driving force transmission section includes at least one of an endless belt mechanism, a chain mechanism, and a gear mechanism. For example, the power simulator of the scope of patent application No. 29, wherein the aforementioned control section controls the rotation of the aforementioned power output shaft to generate a simulated power that simulates the power of the engine. For example, the power simulator of the scope of patent application No. 29, wherein the aforementioned motor unit is the motor unit of any of the scope of patent applications No. 1 to 7.