CN111896409A - A fretting friction and wear testing machine - Google Patents

Abstract

The invention provides a fretting friction and wear testing machine, which includes a frame, a driving mechanism arranged on the frame, and a loading mechanism. The driving mechanism cooperates with the loading mechanism to realize friction test, and the driving mechanism includes a base plate, a voice coil Motor, lateral sliding assembly, sample mounting plate, water tank; loading mechanism includes bracket, lead screw, lead screw slide, three-dimensional force sensor, and sample ball fixture. The present invention has a simple structure, and the sliding mechanism is driven by the voice coil motor to slide left and right, thereby realizing the left and right sliding of the sample plate and the water tank; by using the voice coil motor as the power source, and the slider and the linear slide rail as the sliding components, the complexity of the structure is further reduced The present invention fixes the position of the lead screw by fixing the beam, and by rotating the lead screw, the force in the vertical direction is loaded on the sample; the present invention sets the lead screw slide seat to ensure the stability of the lead screw moving up and down, Make sure that the force of the lead screw on the specimen is in the vertical direction.

Description

A fretting friction and wear testing machine

technical field

The invention relates to the technical field of testing machines, in particular to a fretting friction and wear testing machine.

Background technique

At present, most of the equipment used in the friction and wear test adopts ball-disk or pin-disk friction testing machine. Taking the pin-disk friction testing machine as an example, the traditional pin-disk friction testing machine is always working It's the disc that rotates and the pin doesn't move.

For example, the description of Chinese patent document CN103308409A discloses a rotary disc type multi-sample synchronous friction and wear test device. The friction and wear test device includes a driving device for outputting torque, a friction disc fixed on the output end of the driving device, and an eccentric arrangement above the friction disc. The grinding head and the Z-direction loading device assembled on the grinding head, the friction disc is composed of the disc body and the test piece fixed on it, so that the disc body of the friction disc is used as the movable seat for installing the test piece, and the corresponding grinding head Be the benchmark for testing.

During the test, the driving device drives the sample to revolve, and at the same time, the Z-direction loading device will press the grinding head on the sample plate. The up-sampling is connected to the friction force sensor to collect the friction force data between the friction plate and the grinding head during the test process, and the test is collected through the resistance plate attached to the friction plate and the power supply and signal acquisition circuit connected to the friction plate and the friction plate. The real-time current data in the process, and the friction force data and current data are transmitted to the computer, and the friction coefficient of the friction disc is calculated by the computer.

SUMMARY OF THE INVENTION

Aiming at the deficiencies of the prior art, the present invention provides a fretting friction and wear testing machine.

The technical scheme of the present invention is as follows: a fretting friction and wear testing machine, comprising a frame, a driving mechanism arranged on the frame, and a loading mechanism, the driving mechanism and the loading mechanism are matched to realize the friction test.

Preferably, the driving mechanism includes a base plate, a voice coil motor and a lateral sliding assembly arranged on the base plate, the base plate is mounted on the frame, and the voice coil motor is connected to the lateral sliding assembly through a motor coupling rod , the lateral sliding component is provided with a sample mounting plate, and the sample mounting plate is provided with a water tank.

Preferably, the voice coil motor is arranged on the base plate through a motor mounting plate.

Preferably, the lateral sliding assembly includes a linear sliding rail, a linear sliding rail mounting seat, and a drive connection frame, the linear sliding rail mounting seat is arranged on the base plate, and two linear sliding rail mounting seats are arranged in parallel on the linear sliding rail mounting seat. The linear slide rail is provided on the linear slide rail through the corresponding sliding block.

Preferably, the sample mounting plate is arranged on the drive connection frame.

Preferably, the voice coil motor is connected to the drive connecting frame through a motor connecting rod, and the voice coil motor moves laterally through the driving motor connecting rod, thereby controlling the left and right movement of the drive connecting frame, the sample mounting plate and the water tank.

Preferably, the loading mechanism includes a bracket and a lead screw, the bracket is arranged on the base plate, the lead screw is arranged on the bracket through a fixed beam, and the lead screw can be mounted on the fixed beam through a lead screw nut. Move up and down; the lower end of the lead screw passes through the lead screw slide and is connected with the sensor connector, the lower end of the sensor connector is provided with a three-dimensional force sensor, and the lower end of the three-dimensional force sensor is provided with a sample ball clamp.

Preferably, the lead screw is fixed on the lead screw sliding seat by a lead screw fixing nut, and the lead screw sliding seat is connected with the guide rail provided on the bracket.

Preferably, a connecting disc is further arranged between the sensor connector and the lead screw slide, the connecting disc is fixed on the lead screw slide by fixing bolts, and the sensor connector is fixed by fixing bolts on the coupling disc.

Preferably, a sensor connection plate is further arranged between the lower end of the three-dimensional force sensor and the sample ball clamp, and the sample ball clamp is inserted into the sensor connection plate and locked by a locking nut.

Preferably, the upper end of the lead screw is also provided with a handle, and the lead screw is rotated through the handle, and the lead screw moves up and down on the fixed beam through the lead screw nut, thereby driving the lead screw slide to move up and down on the guide rail , thereby driving the sample ball fixture to move up and down.

The beneficial effects of the present invention are:

1. The structure of the present invention is simple, and the sliding mechanism is driven by the voice coil motor to slide left and right, so as to realize the left and right sliding of the sample plate and the water tank;

2. The present invention uses the voice coil motor as the power source, and uses the slider and the linear slide as the sliding component, which further reduces the complexity of the structure;

3. In the present invention, the position of the lead screw is fixed by the fixed beam, and the force in the vertical direction is loaded on the sample by rotating the lead screw;

4. The present invention is provided with a lead screw sliding seat, thereby ensuring the stability of the lead screw moving up and down, and ensuring that the force loaded by the lead screw on the sample is in the vertical direction.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural schematic diagram of the drive mechanism of the present invention;

Fig. 3 is the structural schematic diagram of the loading mechanism of the present invention;

In the figure, 1-frame, 2-base plate, 3-voice coil motor, 4-motor mounting plate, 5-motor connecting rod, 6-linear slide rail mounting seat, 7-drive connection frame, 8-linear slideway, 9-slider, 10-sample mounting plate, 11-water tank;

12-bracket, 13-screw, 14-fixed beam, 15-screw nut, 16-screw slide, 17-connection disc, 18-sensor connection piece, 19-guide rail, 20-sensor connection plate, 21 - Specimen ball grip, 22-handle, 23-three-dimensional force sensor.

Detailed ways

The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings:

As shown in Fig. 1, a fretting friction and wear testing machine includes a frame 1, a driving mechanism arranged on the frame 1, and a loading mechanism, and the driving mechanism cooperates with the loading mechanism to realize the friction test. In this embodiment, the lower end of the frame is provided with supporting feet.

Preferably, as shown in FIG. 2 , the drive mechanism includes a base plate 2 , a voice coil motor 3 and a lateral sliding assembly arranged on the base plate 2 , the base plate 2 is installed on the frame 1 , and the voice coil motor 3 is installed on the frame 1 . The coil motor 3 is arranged on the base plate 2 through the motor mounting plate 4 . The voice coil motor 3 is connected to the lateral sliding assembly through the motor coupling rod 5 , the lateral sliding assembly is provided with a sample mounting plate 10 , and the sample mounting plate 10 is provided with a water tank 11 .

Preferably, the lateral sliding assembly described in this embodiment includes a linear sliding rail 8 , a linear sliding rail mounting seat 6 , and a driving connection frame 7 . The linear sliding rail mounting seat 6 is arranged on the base plate 1 , and the linear sliding rail mounting seat 6 Two linear slide rails 8 are arranged in parallel on the rail mounting base 6 , and the drive connection frame 7 is set on the linear slide rails 8 through corresponding sliders 9 . The sample mounting plate 10 is arranged on the drive connection frame 7 . The voice coil motor 3 is connected with the driving connection frame 7 through the motor coupling rod 5, and the voice coil motor 3 moves laterally through the driving motor coupling rod 5, thereby controlling the driving connection frame 7, the sample mounting plate 10 and the water tank Move around 11.

Preferably, as shown in FIG. 3 , the loading mechanism includes a bracket 12 and a lead screw 13 . In this embodiment, the bracket 12 is composed of two symmetrically arranged supports, and the two supports are arranged on the base plate 2 . The fixed beam 14 is arranged at the upper end of the two supports. The lead screw 13 is disposed on the bracket 12 through the fixed beam 14 . In this embodiment, the lead screw 13 can move up and down on the fixed beam 14 through the lead screw nut 15 .

The lower end of the lead screw 13 extends downward through the lead screw sliding seat 16 and is connected with the connecting disc 17. The connecting disc 17 is fixed on the lead screw sliding seat 16 by fixing bolts, and the lead screw slides. The seat 16 is connected with the guide rail 19 provided on the bracket 12 , and the lead screw 13 is fixed on the lead screw sliding seat 16 by a lead screw fixing nut.

Preferably, the lower end of the coupling disc 17 is provided with a sensor connector 18 , and the sensor connector 18 is fixed on the coupling disc 17 by fixing bolts. The lower end of the sensor connector 18 is provided with a three-dimensional force sensor 23 , the lower end of the three-dimensional force sensor 23 is provided with a sample ball fixture 21 , and a sample ball is installed in the sample ball fixture 21 .

Preferably, a sensor connection plate 20 is further provided between the three-dimensional force sensor 23 and the sample ball clamp 21 , and the upper end of the sample ball clamp 21 is inserted into the sensor connection plate 20 and locked by a locking nut.

Preferably, the upper end of the lead screw 13 is further provided with a handle 22, the lead screw 13 is rotated through the handle 22, and the lead screw 13 moves up and down on the fixed beam 14 through the lead screw nut 15, thereby driving the lead screw The sliding seat 16 moves up and down on the guide rail 19, thereby driving the sample ball holder 21 to move up and down. In this embodiment, a force in the vertical direction is applied to the sample by rotating the lead screw 13 .

What is described in the above-mentioned embodiments and specification is only to illustrate the principle and best embodiment of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements all fall within the scope of the present invention. within the scope of the claimed invention.

Claims (10)

1. A fretting friction and wear testing machine, characterized in that: comprising a frame, a drive mechanism arranged on the frame, and a loading mechanism, and the driving mechanism and the loading mechanism are matched to realize a friction test; The driving mechanism includes a base plate, a voice coil motor and a lateral sliding assembly arranged on the base plate, the voice coil motor is connected with the lateral sliding assembly through a motor coupling rod, and the lateral sliding assembly is provided with a sample installation. The sample mounting plate is provided with a water tank; The loading mechanism includes a bracket and a lead screw, the bracket is arranged on the base plate, the lead screw is arranged on the bracket through a fixed beam, and the lead screw can move up and down on the fixed beam through the lead screw nut ; The lower end of the lead screw passes through the lead screw sliding seat and is connected with the sensor connector, the lower end of the sensor connector is provided with a three-dimensional force sensor, and the lower end of the three-dimensional force sensor is provided with a sample ball clamp. 2 . The fretting friction and wear testing machine according to claim 1 , wherein the voice coil motor is arranged on a base plate through a motor mounting plate, and the base plate is installed on a frame. 3 . 3. A fretting friction and wear testing machine according to claim 1, characterized in that: the lateral sliding assembly comprises a linear slide rail, a linear slide rail mounting seat, and a drive connection frame, and the linear slide rail is installed The seat is arranged on the base plate, the linear sliding rail mounting seat is provided with two linear sliding rails in parallel, and the driving connection frame is arranged on the linear sliding rail through corresponding sliders. 4 . The fretting friction and wear testing machine according to claim 1 , wherein the sample mounting plate is arranged on the drive connection frame. 5 . 5. A fretting friction and wear testing machine according to claim 4, characterized in that: the drive connection frame is connected to the voice coil motor through a motor coupling rod, and the voice coil motor is laterally driven by the motor coupling rod Move, so as to control the left and right movement of the drive connection frame, the sample mounting plate and the water tank. 6 . The fretting friction and wear testing machine according to claim 1 , wherein the lead screw is fixed on the lead screw sliding seat by a lead screw fixing nut. 7 . 7 . The fretting friction and wear testing machine according to claim 6 , wherein the lead screw sliding seat is connected with the guide rail arranged on the bracket. 8 . 8. A fretting friction and wear testing machine according to claim 1, characterized in that: a connecting disc is also provided between the sensor connector and the lead screw sliding seat; The connecting disc is fixed on the lead screw sliding seat by fixing bolts; The sensor connector is fixed on the coupling disc by fixing bolts. 9. A fretting friction and wear testing machine according to claim 1, wherein a sensor connecting plate is also provided between the lower end of the three-dimensional force sensor and the sample ball clamp; The sample ball clamp is inserted into the sensor connection plate and locked by the lock nut. 10. A fretting friction and wear testing machine according to claim 1, characterized in that: the upper end of the lead screw is further provided with a handle, and the lead screw is rotated by the handle, and the lead screw passes through the lead screw The nut moves up and down on the fixed beam, thereby driving the lead screw slide to move up and down on the guide rail, thereby driving the sample ball fixture to move up and down.

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