Harmonic bearing comprehensive performance testing device
By designing a comprehensive performance testing device for harmonic bearings, the problems of insufficient loading accuracy and low automation level were solved. It realizes high-precision dynamic loading and multi-source signal collaborative diagnosis, improves fault identification accuracy and testing efficiency, and is suitable for life prediction and fault simulation of flexible thin-walled bearings.
Patent Information
- Application Number
- CN202520447263.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-14
AI Technical Summary
Existing life testing equipment lacks sufficient loading accuracy, cannot meet the radial load control requirements of high-precision thin-walled bearings, and cannot perform dynamic loading. It also has a low level of automation, is inconvenient to disassemble and install, and affects the accuracy and safety of testing.
A comprehensive performance testing device for harmonic bearings was designed, including a workbench, an experimental chamber, a loading device, a driving device, a bearing mounting ring, and a fixing device. High-precision sensors are used for multi-source signal acquisition, and PLC control is combined to perform dynamic loading and speed transformation to achieve automated testing.
It achieves high-precision dynamic loading and multi-source signal collaborative diagnosis, shortens the test cycle, improves fault identification accuracy, simulates extreme working conditions to verify bearing performance, provides full life cycle data support, and reduces operation and maintenance costs.
Smart Images
Figure CN223856714U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of special mechanical parts fault diagnosis and performance test, concretely relates to a comprehensive performance testing device of harmonic bearing. BACKGROUND
[0002] The life and reliability of harmonic bearing in precision transmission equipment are its key performance indicators, therefore the life test device has important significance in the research and development and detection process of harmonic bearing. At present, the existing life test devices are mostly designed for conventional bearings, and the technical level has the following deficiencies:
[0003] 1. Insufficient loading precision: the existing test devices mostly adopt simple loading methods (such as mechanical levers), and the loading precision is limited, which cannot meet the requirements of accurate control of radial load for high-precision thin-wall bearings and such loading methods may also cause large experimental data errors, thereby affecting the accuracy of life evaluation.
[0004] 2. Cannot perform dynamic loading: some existing devices only support static loading, while harmonic bearings usually operate in a dynamic load environment in actual work, and its fatigue characteristics are difficult to be truly evaluated through traditional loading methods.
[0005] 3. Low automation level: most of the current devices still rely on manual operation, which may increase safety hazards, especially in the case of high-speed and high-load life test, and the data recording and analysis capability in the experimental process is weak, which is difficult to meet the needs of modern testing.
[0006] 4. The harmonic bearing is inconvenient to disassemble and install during the testing process, which is troublesome and time-consuming and labor-consuming, and may cause damage to the bearing during disassembly, thereby affecting its service life. SUMMARY
[0007] The utility model aims at providing a comprehensive performance testing device of harmonic bearing, which is suitable for life prediction, fault simulation and fatigue characteristic research of flexible thin-wall bearings, and has the advantages of convenient disassembly and assembly of harmonic bearing, high automation level in the testing process, good loading precision and the like.
[0008] The comprehensive performance testing device of harmonic bearing comprises a workbench, an experimental box, a loading device, a driving device, a bearing mounting ring and a bearing fixing device.
[0009] The experimental box, the loading device and the driving device are arranged on the workbench; the experimental box is arranged in the middle of the workbench, the front of the experimental box is provided with an observation window, and the back of the experimental box is of an open structure.
[0010] The driving device is arranged on the rear side of the back of the experiment box, a bearing mounting ring is mounted on the driving device, the harmonic bearing is mounted on the bearing mounting ring in interference fit, and is further fixed through a bearing fixing device; at this time, the bearing mounting ring and the harmonic bearing thereon are located in the experiment box, and the axial direction of the bearing mounting ring is horizontal in the front-rear direction;
[0011] A set of loading devices is arranged on the left and right sides of the experiment box respectively, and the working part of the loading device extends into the experiment box to apply radial horizontal pressure to the left and right sides of the harmonic bearing to form a load;
[0012] An eddy current sensor is arranged on the experiment box, and is used to measure the deformation of the raceway of the harmonic bearing.
[0013] The loading device comprises a loading cylinder, a pressure sensor, a loading spring, a guide column and a loader.
[0014] The output shaft of the loading cylinder is horizontally arranged in the left-right direction and faces the experiment box, a pressure sensor is mounted on the end of the output shaft of the loading cylinder, the pressure sensor is connected to the guide column through the loading spring, and the guide column extends into the experiment box and is provided with the loader.
[0015] The guide column is mounted on the left and right side walls of the experiment box through a flange and can slide relative to the center hole of the flange.
[0016] The rear end of the loader is connected to the guide column, the front end surface is an arc surface corresponding to the outer circular surface of the harmonic bearing, and an acceleration sensor is arranged on the top surface of the loader.
[0017] The bearing fixing device comprises a limiting ring, an inner ring stop ring and a connecting shaft sleeve.
[0018] The inner ring stop ring is a sleeve structure with an open rear end, a through hole corresponding to the diameter of the bearing mounting ring is arranged at the center of the end surface of the inner ring stop ring, and the inner ring stop ring is sleeved on the bearing mounting ring through the through hole; at this time, the rear part of the inner ring stop ring is sleeved on the bearing mounting ring, and the rear end of the inner ring stop ring is in contact with the inner ring of the harmonic bearing; the outer diameter of the inner ring stop ring is greater than the inner diameter of the inner ring of the harmonic bearing and is equal to or slightly smaller than the outer diameter of the inner ring of the harmonic bearing.
[0019] A key groove I is arranged in the inner hole of the bearing mounting ring, a key groove II is arranged on the inner hole of the connecting shaft sleeve, the inner hole of the bearing mounting ring and the inner hole of the connecting shaft sleeve have the same diameter and are matched with the outer diameter of the output shaft of the driving device in clearance fit; a key is arranged on the output shaft of the driving device, and when the output shaft is assembled in the inner holes of the bearing mounting ring and the connecting shaft sleeve, the key and the key grooves I and II are matched to fix the rotation direction.
[0020] The limiting ring is arranged at the front end of the connecting shaft sleeve, and when the connecting shaft sleeve and the bearing mounting ring are mounted on the output shaft of the driving device, the limiting ring is sleeved into the rear end of the bearing mounting ring and abuts against the rear side of the mounting circular platform, the outer diameter of the limiting ring is greater than the inner diameter of the inner ring of the harmonic bearing and equal to or slightly smaller than the outer diameter of the inner ring of the harmonic bearing;When the harmonic bearing is assembled on the bearing mounting ring, the limiting ring and the inner ring blocking ring form front and rear cooperation to limit the axial movement of the harmonic bearing.
[0021] The front end surface of the bearing mounting ring is provided with a bolt hole I, the inner ring blocking ring is a sleeve structure with an open rear end, a through hole corresponding to the diameter of the bearing mounting ring is arranged at the center of the end surface of the inner ring blocking ring, the inner ring blocking ring is sleeved on the bearing mounting ring through the through hole, the inner ring blocking ring is provided with a bolt hole II corresponding to the bolt hole I, and the inner ring blocking ring and the front end surface of the bearing mounting ring are fixedly connected by rotating a bolt into the bolt hole I and the bolt hole II, at this time, the rear part of the inner ring blocking ring is sleeved on the bearing mounting ring, and the rear end of the inner ring blocking ring is in contact with the inner ring of the harmonic bearing.
[0022] The harmonic bearing comprehensive performance testing device further comprises a harmonic bearing mounting tool, the harmonic bearing mounting tool comprises an impact shaft, an inner shaft and an impact cylinder, a middle part of the front side surface of the impact shaft is provided with the inner shaft, and the diameter of the inner shaft is in clearance fit with the inner diameter of the bearing mounting ring;The front end surface of the impact cylinder is open, the rear end surface is provided with a through hole consistent with the inner diameter of the bearing mounting ring, the inner diameter of the impact cylinder is in clearance fit with the outer diameter of the bearing mounting ring, and the outer diameter of the impact cylinder is slightly smaller than or equal to the outer diameter of the inner ring of the harmonic bearing;The front end of the bearing mounting ring is provided with a shaft shoulder.
[0023] The driving device is a motor.
[0024] The harmonic bearing comprehensive performance testing device further comprises a cover, the outer diameter of the cover is in clearance fit with the inner diameter of the bearing mounting ring;The front end surface of the output shaft of the driving device is provided with a bolt hole I matched with each other in the center, the cover is provided with a bolt hole II corresponding to the bolt hole I in the center, the cover is placed on the front end of the output shaft of the driving device, and a fixing bolt is rotated into the bolt hole II and the bolt hole I, so that the cover and the output shaft of the driving device are connected as a whole.
[0025] The harmonic bearing comprehensive performance testing device further comprises a current sensor, and the current sensor is used for measuring the working current of the motor.
[0026] The use process of the device is as follows:
[0027] The bearing mounting ring is vertically placed with the front end upward, the harmonic bearing is aligned with the front end of the bearing mounting ring, is placed on the shaft shoulder of the bearing mounting ring, the impact cylinder is placed thereon, then the inner shaft is inserted into the impact cylinder and the inner hole of the bearing mounting ring from the front end, so that the impact shaft contacts the impact cylinder, and the impact cylinder contacts the harmonic bearing, the impact shaft is gently knocked, so that the harmonic bearing is interference-fitted on the bearing mounting ring, then the inner ring stop ring is fixedly installed at the front end of the bearing mounting ring through bolts and contacts the harmonic bearing to form limiting.
[0028] The two loading cylinders are contracted to leave the center position, and the top plate of the test box is removed. The assembled bearing mounting ring, connecting shaft sleeve and motor output shaft are installed together through key position cooperation. The load loading of the loading cylinder is started according to the preset value, the motor is started to rotate, and the test can be started. During the test process, the load and the motor rotating speed can be automatically changed continuously by the PLC control, and meanwhile, various sensor data are collected and recorded, so as to facilitate subsequent analysis.
[0029] The platform has the following beneficial effects:
[0030] The platform can synchronously collect multiple source signals such as acceleration, displacement, current and force value through high-precision sensors, and can accurately diagnose bearing fault characteristics (such as cracks and pitting) in combination with signal analysis. Meanwhile, the platform can quickly stimulate potential failure modes of the harmonic bearing through dynamic loading and rotating speed conversion to compress the test period and dynamically monitor the performance degradation law, thereby providing data support for life prediction and reliability design. The platform has the following advantages: 1. multiple types of signals can be synchronously collected for collaborative diagnosis, thereby breaking through the limitation of single parameter analysis and improving fault recognition accuracy and comprehensiveness; 2. extreme working conditions can be simulated, and the limit performance of the bearing in real application can be verified through setting of the rotating speed and load of the harmonic bearing; 3. a full life cycle data chain is formed from early fault warning to life termination threshold determination, thereby forming a closed loop feedback to help optimize product design and reduce operation and maintenance cost. The platform can be applied to high-reliability fields such as precision robots, and can provide an efficient and intelligent test solution for failure mechanism research and quality control of flexible thin-wall bearings. BRIEF DESCRIPTION OF DRAWINGS
[0031] Figure 1 It is a structural schematic view of the harmonic bearing comprehensive performance test device of embodiment 1.
[0032] Figure 2 It is a partial enlarged view of the test box in the harmonic bearing comprehensive performance test device of embodiment 1.
[0033] Figure 3 Figure is a schematic view of the bearing mounting ring and mating structure of Example 1;
[0034] Figure 4 Figure is a schematic view of the structure of the harmonic bearing mounting tool of Example 1;
[0035] The serial numbers and the names of the various parts in the figure are as follows:
[0036] 1 - workbench, 2 - experimental box, 3 - bearing mounting ring, 4 - observation window, 5 - eddy current sensor, 6 - loading cylinder, 7 - pressure sensor, 8 - loading spring, 9 - guide column, 10 - loader, 11 - flange, 12 - acceleration sensor, 13 - cover, 14 - limit ring, 15 - inner ring stop ring, 16 - connecting shaft sleeve, 17 - key groove I, 18 - impact shaft, 19 - inner shaft, 20 - impact cylinder, 21 - motor, 22 - key groove II, 23 - shaft shoulder. DETAILED DESCRIPTION
[0037] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and do not limit the utility model.
[0038] The harmonic bearing comprehensive performance testing device, including workbench 1, experimental box 2, loading device, driving device, bearing mounting ring 3, bearing fixing device, the driving device is motor 21;
[0039] The experimental box 2, loading device, driving device are all arranged on the workbench 1, the middle part of the workbench 1 is provided with the experimental box 2, the front of the experimental box 2 is provided with an observation window 4, and the back of the experimental box 2 is of an open structure;
[0040] The driving device is arranged on the back side of the back of the experimental box 2, the bearing mounting ring 3 is installed on the driving device, the harmonic bearing is installed on the bearing mounting ring 3 in an interference fit, and is further fixed through the bearing fixing device, at this time, the bearing mounting ring 3 and the harmonic bearing thereon are located in the experimental box 2, and the axial direction of the bearing mounting ring 3 is the front-back direction and is horizontal;
[0041] One set of loading device is arranged on the left side and the right side of the experimental box 2 respectively, and the working part of the loading device extends into the experimental box 2 to form a load by applying a radial horizontal pressure to the left side and the right side of the harmonic bearing.
[0042] The experimental box 2 is provided with an eddy current sensor 5 for measuring the deformation of the raceway of the harmonic bearing.
[0043] The loading device comprises a loading cylinder 6, a pressure sensor 7, a loading spring 8, a guide column 9, and a loader 10.
[0044] The output shaft of the loading cylinder 6 is horizontally arranged along the left-right direction and faces the experiment box 2. The end of the output shaft of the loading cylinder 6 is provided with the pressure sensor 7. The pressure sensor 7 is connected to the guide column 9 through the loading spring 8. The guide column 9 extends into the experiment box 2 and is provided with the loader 10.
[0045] The guide column 9 is arranged on the left and right side walls of the experiment box 2 through a flange 11 and can slide relative to the central hole of the flange 11.
[0046] The rear end of the loader 10 is connected to the guide column 9. The front end surface of the loader 10 is an arc surface corresponding to the outer surface of the harmonic bearing. The top surface of the loader 10 is provided with an acceleration sensor 12.
[0047] The bearing fixing device comprises a limiting ring 14, an inner ring stop ring 15, and a connecting shaft sleeve 16.
[0048] The inner ring stop ring 15 is a sleeve structure with an open rear end. The central end surface of the inner ring stop ring 15 is provided with a through hole corresponding to the diameter of the bearing mounting ring 3. The inner ring stop ring 15 is sleeved on the bearing mounting ring 3 through the through hole. At this time, the rear part of the inner ring stop ring 15 is sleeved on the bearing mounting ring 3, and the rear end of the inner ring stop ring 15 is in contact with the inner ring of the harmonic bearing. The outer diameter of the inner ring stop ring 15 is greater than the inner diameter of the inner ring of the harmonic bearing and equal to or slightly smaller than the outer diameter of the inner ring of the harmonic bearing.
[0049] The inner hole of the bearing mounting ring 3 is provided with a key groove I 17. The inner hole of the connecting shaft sleeve 16 is provided with a key groove II 22. The inner hole of the bearing mounting ring 3 and the inner hole of the connecting shaft sleeve 16 have the same diameter and are both in clearance fit corresponding to the outer diameter of the output shaft of the driving device. The output shaft of the driving device is provided with a key. When the output shaft is assembled in the inner holes of the bearing mounting ring 3 and the connecting shaft sleeve 16, the rotation direction is fixed through the cooperation of the key and the key grooves I 17 and II 22.
[0050] The limiting ring 14 is arranged at the front end of the connecting shaft sleeve 16. When the connecting shaft sleeve 16 and the bearing mounting ring 3 are mounted on the output shaft of the driving device, the limiting ring 14 is sleeved on the rear end of the bearing mounting ring 3 and is adjacent to the rear side of the mounting circular table. The outer diameter of the limiting ring 14 is greater than the inner diameter of the inner ring of the harmonic bearing and equal to or slightly smaller than the outer diameter of the inner ring of the harmonic bearing. When the harmonic bearing is assembled on the bearing mounting ring 3, the limiting ring 14 and the inner ring stop ring 15 form front and rear cooperation to limit the axial movement of the harmonic bearing.
[0051] The front end surface of the bearing mounting ring 3 is provided with a bolt hole I, the inner ring stop ring 15 is a sleeve structure with an open rear end, the center of the end surface of the inner ring stop ring 15 is provided with a through hole corresponding to the diameter of the bearing mounting ring 3, the inner ring stop ring 15 is sleeved on the bearing mounting ring 3 through the through hole, the inner ring stop ring 15 is provided with a bolt hole II corresponding to the bolt hole I, the inner ring stop ring 15 and the front end surface of the bearing mounting ring 3 are fixedly connected by rotating a bolt into the bolt hole I and the bolt hole II, at this time, the rear part of the inner ring stop ring 15 is sleeved on the bearing mounting ring 3, and the rear end of the inner ring stop ring 15 is in contact with the inner ring of the harmonic bearing.
[0052] The outer diameter of the cover 13 corresponds to the inner diameter of the bearing mounting ring 3 to form a clearance fit; the front end surface of the output shaft of the driving device is provided with a bolt hole I matched with each other, the center of the cover 13 is provided with a bolt hole II corresponding to the bolt hole I, the cover 13 is placed on the front end of the output shaft of the driving device, and the cover 13 and the output shaft of the driving device are integrated by rotating a fixing bolt into the bolt hole II and the bolt hole I.
[0053] The harmonic bearing comprehensive performance testing device is further provided with a current sensor, and the current sensor is used for measuring the working current of the motor 21.
[0054] The harmonic bearing mounting tool is further provided with an impact shaft 18, an inner shaft 19 and an impact cylinder 20, the front side surface of the impact shaft 18 is provided with the inner shaft 19 in the middle, the diameter of the inner shaft 19 corresponds to the inner diameter of the bearing mounting ring 3 to form a clearance fit, the front end surface of the impact cylinder 20 is open, the rear end surface is provided with a through hole consistent with the inner diameter of the bearing mounting ring 3, the inner diameter of the impact cylinder 20 corresponds to the outer diameter of the bearing mounting ring 3 to form a clearance fit, and the outer diameter of the impact cylinder 20 is slightly smaller than or equal to the outer diameter of the inner ring of the harmonic bearing; the front end of the bearing mounting ring 3 is provided with a shaft shoulder 23.
[0055] The above only describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A kind of harmonic bearing comprehensive performance testing device, including workbench (1), experimental box (2), loading device, driving device, bearing installation ring (3), bearing fixing device, it is characterized in that: The experimental box (2), loading device, driving device are all arranged on workbench (1);The middle part of the workbench (1) is provided with experimental box (2), the front of experimental box (2) is provided with observation window (4), and the back of experimental box (2) is open structure; The driving device is arranged on the back of experimental box (2), and the bearing installation ring (3) is installed on the driving device, the harmonic bearing is installed on the bearing installation ring (3) with interference, and is further fixed by bearing fixing device, at this time, the bearing installation ring (3) and the harmonic bearing on it are located in experimental box (2), and the axial direction of the bearing installation ring (3) is front-back direction horizontal; The left and right sides of the experimental box (2) are respectively provided with a set of loading device, and the working part of the loading device is inserted into the experimental box (2) to form load by the radial horizontal pressure on the left and right sides of the harmonic bearing; The experimental box (2) is provided with an eddy current sensor (5) for measuring the deformation of the raceway of the harmonic bearing.
2. The harmonic bearing comprehensive performance testing device according to claim 1, wherein: The loading device comprises a loading cylinder (6), a pressure sensor (7), a loading spring (8), a guide column (9), and a loader (10). The output shaft of the loading cylinder (6) is arranged horizontally along the left-right direction and faces the experimental box (2). The end of the output shaft of the loading cylinder (6) is provided with the pressure sensor (7). The pressure sensor (7) is connected to the guide column (9) through the loading spring (8). The guide column (9) is inserted into the experimental box (2) and is provided with the loader (10) thereon.
3. The harmonic bearing comprehensive performance testing device according to claim 2, wherein: The guide column (9) is installed on the left and right side walls of the experimental box (2) through a flange (11) and can slide relative to the center hole of the flange (11).
4. The harmonic bearing comprehensive performance testing device according to claim 2, wherein: The rear end of the loader (10) is connected to the guide column (9), and the front end surface is an arc surface corresponding to the outer circular surface of the harmonic bearing. The top surface of the loader (10) is provided with an acceleration sensor (12).
5. The harmonic bearing comprehensive performance testing device according to claim 2, wherein: The bearing fixing device comprises a limiting ring (14), an inner ring stop ring (15), and a connecting shaft sleeve (16). The inner ring stop ring (15) is a sleeve structure with an open rear end. The center of the end surface of the inner ring stop ring (15) is provided with a through hole corresponding to the diameter of the bearing installation ring (3). The inner ring stop ring (15) is sleeved on the bearing installation ring (3) through the through hole. At this time, the rear part of the inner ring stop ring (15) is sleeved on the bearing installation ring (3), and the rear end of the inner ring stop ring (15) is in contact with the inner ring of the harmonic bearing. The outer diameter of the inner ring stop ring (15) is greater than the inner diameter of the inner ring of the harmonic bearing and equal to or slightly smaller than the outer diameter of the inner ring of the harmonic bearing. The inner hole of the bearing mounting ring (3) is provided with a key groove I (17), the inner hole of the connecting shaft sleeve (16) is provided with a key groove II (22), the inner hole of the bearing mounting ring (3) is consistent with the inner hole of the connecting shaft sleeve (16) in diameter, and both are in clearance fit corresponding to the outer diameter of the output shaft of the driving device; the output shaft of the driving device is provided with a key, and when the output shaft is assembled in the inner holes of the bearing mounting ring (3) and the connecting shaft sleeve (16), the key and the key grooves I (17) and II (22) are matched to realize the fixation in the rotation direction. The limiting ring (14) is arranged at the front end of the connecting shaft sleeve (16), and when the connecting shaft sleeve (16) and the bearing mounting ring (3) are mounted on the output shaft of the driving device, the limiting ring (14) is sleeved into the rear end of the bearing mounting ring (3) and is adjacent to the rear side of the mounting circular table, the outer diameter of the limiting ring (14) is greater than the inner diameter of the inner ring of the harmonic bearing and is equal to or slightly smaller than the outer diameter of the inner ring of the harmonic bearing; when the harmonic bearing is assembled on the bearing mounting ring (3), the limiting ring (14) and the inner ring stop ring (15) are in front and rear cooperation to limit the axial movement of the harmonic bearing.
6. The harmonic bearing comprehensive performance testing device according to claim 5, characterized in that: The front end surface of the bearing mounting ring (3) is provided with a bolt hole I, the inner ring stop ring (15) is a sleeve structure with an open rear end, the center of the end surface of the inner ring stop ring (15) is provided with a through hole corresponding to the diameter of the bearing mounting ring (3), the inner ring stop ring (15) is sleeved on the bearing mounting ring (3) through the through hole, the inner ring stop ring (15) is provided with a bolt hole II corresponding to the bolt hole I, the inner ring stop ring (15) is fixedly connected with the front end surface of the bearing mounting ring (3) by screwing a bolt into the bolt holes I and II, at this time, the rear part of the inner ring stop ring (15) is sleeved on the bearing mounting ring (3), and the rear end of the inner ring stop ring (15) is in contact with the inner ring of the harmonic bearing.
7. The harmonic bearing comprehensive performance testing device according to claim 5, characterized in that: It further comprises a harmonic bearing mounting tool, the harmonic bearing mounting tool comprises an impact shaft (18), an inner shaft (19) and an impact cylinder (20), the front side surface of the impact shaft (18) is provided with the inner shaft (19) in the middle, the diameter of the inner shaft (19) is in clearance fit corresponding to the inner diameter of the bearing mounting ring (3); the front end surface of the impact cylinder (20) is open, the rear end surface is provided with a through hole consistent with the inner diameter of the bearing mounting ring (3), the inner diameter of the impact cylinder (20) is in clearance fit corresponding to the outer diameter of the bearing mounting ring (3), and the outer diameter of the impact cylinder (20) is slightly smaller than or equal to the outer diameter of the inner ring of the harmonic bearing; the front end of the bearing mounting ring (3) is provided with a shaft shoulder (23).
8. The harmonic bearing comprehensive performance test device of claim 1, wherein: The driving device is a motor (21).
9. The harmonic bearing comprehensive performance testing device according to claim 8, characterized in that: It also comprises a cover (13), the outer diameter of which corresponds to the inner diameter of the bearing mounting ring (3) to form a clearance fit; the front end face of the output shaft of the driving device is provided with a bolt hole I, and the center of the cover (13) is provided with a bolt hole II corresponding to the bolt hole I; the cover (13) is placed on the front end of the output shaft of the driving device, and a fixing bolt is screwed into the bolt hole II and the bolt hole I, so that the cover (13) is connected to the output shaft of the driving device as a whole.
10. The harmonic bearing integrated performance test apparatus of claim 8, wherein: It also comprises a current sensor for measuring the working current of the motor (21).