CN104670524B - A kind of friction-free air floating space weightlessness rotating simulator - Google Patents

Abstract

The invention relates to a device for simulating weightless rotation in space, in particular to a device for simulating weightless rotation in a frictionless air-floating space. They are respectively installed on the base body through shaft support; the air bearing shaft outer cover is equipped with an air bearing shaft sleeve, and there is a gap between the air bearing shaft sleeve and the air bearing main shaft, and a gas pipe for introducing gas into the gap is provided on the left shaft end plate shaft , when the torque motor is powered off, there is no friction between the air-floating spindle and the air-floating shaft sleeve; the torque motor rotor adapter sleeve is connected to one side of the air-floating shaft sleeve, and the torque motor rotor is sleeved on the right shaft end On the plate shaft and connected with the torque motor rotor adapter sleeve, the torque motor stator is installed on the right shaft end plate shaft through the stator pressure ring, and the rotor sleeve is located between the torque motor rotor and the torque motor stator. The invention can reduce the frictional force to the greatest extent, ensure the rotation precision, and has the advantages of simple structure, convenient installation and maintenance.

Description

A frictionless air bearing space weightless rotation simulation device

technical field

The invention relates to a device for simulating weightless rotation in space, in particular to a device for simulating weightless rotation in frictionless air-floating space.

Background technique

Among the existing high-precision rotating devices for simulating weightless rotation in space, one is mechanical friction rotation, which causes a large friction loss between the shaft and the bearing, and the simulation accuracy of weightless rotation in space is not high; the other is Although it is air-floating, it is not driven by a non-contact torque motor. This device is improved compared to the previous one, but it cannot control the speed between the shaft and the bearing, and cannot set the initial motion state of the rotating device.

Contents of the invention

In order to solve the above-mentioned problems existing in simulating weightless rotation in space, the object of the present invention is to provide a frictionless air-floating space weightless rotation simulation device. The simulation device combines non-contact torque motor drive and air bearing rotation, which greatly reduces the negative impact of friction on the system, and can also accurately set the rotation angle and angular velocity.

The purpose of the present invention is achieved through the following technical solutions:

The invention includes an air-floating main shaft, an air-floating shaft sleeve, a torque motor stator, a torque motor rotor, a rotor sleeve, a stator pressure ring, a torque motor rotor adapter sleeve, a left shaft end plate shaft, a right shaft end plate shaft and a gas pipe. Wherein the two ends of the air-floating main shaft are respectively connected with the left-axis end-plate shaft and the right-axis end-plate shaft, and the left-axis end-plate shaft and the right-axis end-plate shaft are respectively installed on the substrate through shaft supports; An air bearing shaft sleeve is provided, and there is a gap between the air bearing shaft sleeve and the air bearing main shaft. A gas pipe for introducing gas into the gap is provided on the left shaft end plate shaft. When the torque motor is powered off, There is no friction between the air-floating main shaft and the air-floating shaft sleeve; the torque motor rotor adapter sleeve is connected to one side of the air-floating shaft sleeve, and the torque motor rotor is sleeved on the right shaft end plate shaft and connected with the torque motor rotor adapter sleeve, the torque motor stator is installed on the right shaft end plate shaft through the stator pressure ring, and the rotor sleeve is located between the torque motor rotor and the torque motor stator; The torque motor rotor drives the air bearing shaft sleeve to rotate through the torque motor rotor adapter sleeve, and the space weightless rotation simulation device installed on the air bearing shaft sleeve rotates with the air bearing shaft sleeve.

Wherein: a circular grating is installed on the circumferential surface of the other side of the air bearing shaft sleeve, and a reading head corresponding to the circular grating is arranged on the shaft of the left shaft end plate. The rotation count of the shaft sleeve; the air bearing shaft sleeve, the torque motor stator, the torque motor rotor, the torque motor rotor adapter sleeve, the circular grating and the space weightless rotation simulation device are coaxially arranged;

One end of the right shaft end plate shaft is a disk, and the other end is a hollow cylinder. The end surface on one side of the disk is connected to one end of the air-floating main shaft, and the other side of the disk is provided with a strip groove along the radial direction. The stator pressure ring is installed on the right shaft end plate shaft, and is sleeved on one end of the torque motor stator to radially position the torque motor stator; the other end of the torque motor stator is accommodated in the bar-shaped In the groove, the axis of the right shaft end plate is axially positioned;

The torque motor rotor is connected to one end of the torque motor rotor adapter sleeve, and the other end of the torque motor rotor adapter sleeve is fixedly connected to one side of the air bearing shaft sleeve; the outer ring of the torque motor rotor is connected to the rotor sleeve The inner ring of the tube is connected, the torque motor stator is installed on the outer ring of the rotor sleeve, the torque motor rotor, the rotor sleeve and the torque motor stator are all located in the torque motor rotor adapter sleeve; the torque motor rotor is respectively passed through Torque motor rotor adapter sleeve and rotor sleeve for axial and radial positioning;

One end of the left shaft end plate shaft is a disk, and the other end is a hollow cylinder, the air pipe is installed on the disk, and the reading head is fixedly connected to the disk through the reading head mounting block;

The sleeve of the air bearing shaft is provided with a plurality of annular grooves in the axial direction.

Advantage of the present invention and positive effect are:

1. The present invention can minimize friction and ensure rotation accuracy.

2. The non-contact torque motor of the present invention has high-precision (0.001 degrees), low-speed (0.01 degrees/second) performance, adopts a sub-package non-contact torque motor, and has no frictional torque between the torque motor stator and the torque motor rotor After the drive reaches the position set by the initial conditions, the motor is powered off, and the rotor of the torque motor moves with the space weightless rotation simulation device, and is in a free state without disturbing the friction accuracy.

3. The invention uses a circular grating to measure the rotation angle and angular velocity of the non-contact torque motor, and the measurement is accurate.

4. The present invention has simple structure, convenient installation and maintenance.

Description of drawings

Fig. 1 is a structural front view of the present invention;

Figure 2 is a top sectional view of Figure 1;

Fig. 3 is the left view of Fig. 1;

Fig. 4 is a structural front view of the right shaft end plate shaft of the present invention;

Fig. 5 is the left view of Fig. 4;

Fig. 6 is A-A sectional view of Fig. 4;

Among them: 1 is the left shaft support, 2 is the air bearing main shaft, 3 is the air bearing main shaft sleeve, 4 is the torque motor stator, 5 is the torque motor rotor, 6 is the rotor bushing, 7 is the stator pressure ring, 8 is the torque motor Rotor adapter sleeve, 9 is the right shaft support, 10 is the right shaft end plate shaft, 11 is the circular grating, 12 is the reading head, 13 is the reading head mounting block, 14 is the air pipe, 15 is the left shaft end plate shaft, 16 is Bar groove, 17 is an annular groove.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 3, the present invention includes a left shaft support 1, an air-floating main shaft 2, an air-floating shaft sleeve 3, a torque motor stator 4, a torque motor rotor 5, a rotor sleeve 6, a stator pressure ring 7, and a torque motor Rotor adapter sleeve 8, right shaft support 9, left shaft end plate shaft 15, right shaft end plate shaft 10, circular grating 11, reading head 12 and air pipe 14, of which left shaft end plate shaft 15 and right shaft end plate shaft 10 One end is a disc, the other end is a hollow cylinder (the axial section is "T" shape), one end (left end) of the air-floating main shaft 2 and the disc end face of the left shaft end plate shaft 15 are fixed by bolts, and the air-floating main shaft The other end (right end) of 2 is fixedly connected with the disk end face of the right end plate shaft 10 by bolts, and the left end plate shaft 15 and the right end plate shaft 10 are axially positioned for the air bearing main shaft 2. The hollow cylinders on the left shaft end plate shaft 15 and the right shaft end plate shaft 10 are fixedly installed on the left shaft support 1 and the right shaft support 9 by bolts respectively.

The air pipe 14 is installed on the disk end face of the left shaft end plate shaft 15, and the air bearing shaft sleeve 3 is covered outside the air bearing shaft 2, and there is a gap between the air bearing shaft sleeve 3 and the air bearing main shaft 2, and the gas Introduced by the air pipe 14, the gap between the air bearing shaft sleeve 3 and the air bearing main shaft 2 is filled with gas; when the torque motor is powered off, there is no friction between the air bearing main shaft 2 and the air bearing shaft sleeve 3, no Generate friction and electromagnetic resistance torque. The reading head 12 is fixedly installed by the reading head installation block 13, and the reading head installation block 13 is also installed on the disc end face of the left shaft end plate shaft 15.

The torque motor rotor 5, the rotor casing 6 and the torque motor stator 4 are all located in the torque motor rotor adapter sleeve 8, wherein the torque motor rotor 5 is sleeved on the right shaft end plate shaft 10, and is connected with the torque motor rotor adapter sleeve 8 One end face of the torque motor rotor adapter sleeve 8 is fixedly connected to one side of the air bearing shaft sleeve 3 by bolts. The outer ring of the torque motor rotor 5 is connected to the inner ring of the rotor sleeve 6, and the torque motor stator 4 is installed on the outer ring of the rotor sleeve 6; Axial and radial positioning. As shown in Figures 4 to 6, one end face of the right shaft end plate shaft 10 disc is fixed to the right end of the air-floating main shaft 2 through bolts, and the other end face is provided with a strip groove 16 along the radial direction, and is connected with the stator pressure ring 7 is fixedly connected by bolts; the stator pressure ring 7 is sleeved on one end of the torque motor stator 4 to radially position the torque motor stator 4, and the other end of the torque motor stator 4 is accommodated in the strip groove 16, passing through the right shaft end plate The shaft 10 is positioned axially.

The torque motor rotor 5 drives the air bearing shaft sleeve 3 to rotate through the torque motor rotor adapter sleeve 8 , and the space weightlessness rotation simulation device installed on the air bearing shaft sleeve 3 rotates with the air bearing shaft sleeve 3 . A circular grating 11 is installed on the circumferential surface of the other side of the air bearing shaft sleeve 3, corresponding to the reading head 12 arranged on the left shaft end plate shaft 15, and the reading head 12 is connected with the air bearing shaft sleeve through the circular grating 11 3 turns count,.

A plurality of annular grooves 17 are formed in the axial direction on the air shaft sleeve 3 to reduce the weight of the simulation device.

The air bearing shaft sleeve 3, the torque motor stator 4, the torque motor rotor 5, the torque motor rotor adapter sleeve 8, the circular grating 11 and the space weightless rotation simulation device of the present invention are coaxially arranged to form a measurement feedback system for vertical motion part.

Working principle of the present invention is:

The non-contact torque motor of the present invention is integrated with the space weightless rotation simulation device, and the non-contact torque motor directly drives the space weightlessness rotation simulation device to rotate, that is, the torque motor rotor 5 drives the air bearing shaft through the torque motor rotor adapter sleeve 8 The shaft sleeve 3 rotates, and the space weightlessness rotation simulation device installed on the air bearing shaft sleeve 3 rotates with the air bearing shaft sleeve 3 . During the rotation process, the rotation angle and angular velocity of the torque motor are measured through the circular grating 11 . The gas is introduced from the air pipe 14, so that the space between the air-floating main shaft 2 and the air-floating shaft sleeve 3 is filled with gas; when the torque motor is powered off, the air-floating main shaft 2 and the air-floating shaft sleeve 3 are in a frictionless state, and no friction occurs. Friction and electromagnetic resistance torque.

The non-contact torque motor of the present invention is a commercially available product, purchased from Danaher Corporation of the United States, and the model is KBM-43X01; the air pipe 14 is a commercially available product, purchased from Germany (Festo) company, and the model is FESTO-QSML- 1 point - 5.

Claims (9)

1. A frictionless air-floating space weightless rotation simulation device, comprising a torque motor stator and a torque motor rotor, is characterized in that: it also includes an air-floating main shaft (2), an air-floating shaft sleeve (3), a rotor casing (6 ), stator pressure ring (7), torque motor rotor adapter sleeve (8), left shaft end plate shaft (15), right shaft end plate shaft (10) and air pipe (14), of which the air bearing main shaft (2) The two ends are respectively connected with the left shaft end plate shaft (15) and the right shaft end plate shaft (10), and the left shaft end plate shaft (15) and the right shaft end plate shaft (10) are respectively installed on the base through shaft supports ; The outer sleeve of the air-floating shaft (2) is provided with an air-floating shaft sleeve (3), and there is a gap between the air-floating shaft sleeve (3) and the air-floating main shaft (2). (15) is provided with the trachea (14) that introduces gas to described gap, when moment motor is cut off, be frictionless state between described air-floating main shaft (2) and air-floating shaft bushing (3); The torque motor rotor adapter sleeve (8) is connected to one side of the air bearing shaft sleeve (3), and the torque motor rotor (5) is sleeved on the right shaft end plate shaft (10) and connected to the torque motor The motor rotor adapter sleeve (8) is connected, the torque motor stator (4) is installed on the right shaft end plate shaft (10) through the stator pressure ring (7), and the rotor sleeve (6) is located on the torque motor rotor ( 5) between the torque motor stator (4); the torque motor rotor (5) drives the air bearing shaft sleeve (3) to rotate through the torque motor rotor adapter sleeve (8), and is installed on the air bearing shaft sleeve (3 ) on the space weightless rotation simulation device rotates with the air bearing shaft sleeve (3). 2. The frictionless air bearing space weightless rotation simulation device according to claim 1, characterized in that: a circular grating (11) is installed on the circumferential surface of the other side of the air bearing shaft bushing (3), so that The reading head (12) corresponding to the circular grating (11) is arranged on the left shaft end plate shaft (15), and the reading head (12) rotates with the air bearing shaft sleeve (3) count. 3. The frictionless air bearing space weightless rotation simulation device according to claim 2, characterized in that: the air bearing shaft sleeve (3), the torque motor stator (4), the torque motor rotor (5), the torque motor The rotor adapter sleeve (8), the circular grating (11) and the space weightless rotation simulation device are arranged coaxially. 4. The frictionless air bearing space weightless rotation simulation device according to claim 1 or 2, characterized in that: one end of the right shaft end plate shaft (10) is a disc, the other end is a hollow cylinder, and the circle The end surface on one side of the disk is connected with one end of the air bearing main shaft (2), and the other side of the disk is provided with strip grooves (16) along the radial direction. 5. The frictionless air bearing space weightless rotation simulation device according to claim 4, characterized in that: the stator pressure ring (7) is installed on the right shaft end plate shaft (10), and is sleeved on the moment One end of the motor stator (4) is positioned radially to the torque motor stator (4); the other end of the torque motor stator (4) is accommodated in the strip groove (16), passing through the right shaft end plate The shaft (10) is positioned axially. 6. The frictionless air bearing space weightless rotation simulation device according to claim 1 or 2, characterized in that: the torque motor rotor (5) is connected to one end of the torque motor rotor adapter sleeve (8), and the torque The other end of the motor rotor adapter sleeve (8) is fixedly connected to one side of the air bearing shaft sleeve (3); the outer ring of the torque motor rotor (5) is connected to the inner ring of the rotor sleeve (6), so The torque motor stator (4) is installed on the outer ring of the rotor sleeve (6), and the torque motor rotor (5), the rotor sleeve (6) and the torque motor stator (4) are all located in the torque motor rotor adapter sleeve ( 8) inside. 7. The frictionless air bearing space weightless rotation simulation device according to claim 6, characterized in that: the torque motor rotor (5) is respectively carried out through the torque motor rotor adapter sleeve (8) and the rotor sleeve (6). Axial and radial positioning. 8. The frictionless air bearing space weightless rotation simulation device according to claim 1 or 2, characterized in that: one end of the left shaft end plate shaft (15) is a disc, the other end is a hollow cylinder, and the air pipe (14) is installed on the disk, and the reading head (12) is affixed to the disk through the reading head installation block (13). 9. The device for simulating weightless rotation in a frictionless air-floating space according to claim 1 or 2, characterized in that: the air-floating shaft sleeve (3) is provided with a plurality of annular grooves (17) in the axial direction.