Servo motor torque test tool

By designing a servo motor torque test tooling with adjustable torque sensor shaft height, the torque test adaptation problem of servo motors of different sizes is solved, and accurate torque test of servo motors of various sizes is achieved.

CN222926317UActive Publication Date: 2025-05-30PHASE MOTION CONTROL SOLUTION WUHAN CO LTD
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Patent Information

Application Number
CN202421732434.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-22
Publication Date
2025-05-30
Estimated Expiration
2034-07-22

AI Technical Summary

Technical Problem

The existing servo motor torque test tooling is difficult to adapt to servo motors of different sizes, resulting in the height of the rotation shaft of the torque sensor and the inability to match the output shaft of servo motors of different sizes.

Method used

A servo motor torque testing tooling including a workbench, a servo motor fixing mechanism, a linear drive mechanism and a lifting platform is designed. Through the linear drive mechanism and lifting platform, the torque sensor can be moved horizontally and lifted, adjusting its shaft height to match the output shaft of the servo motor of different sizes.

Benefits of technology

Torque testing of servo motors of different sizes is realized, ensuring the coaxial connection between the torque sensor and the servo motor output shaft, and improving the accuracy and applicability of the test.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a servo motor torque testing tool, which comprises a workbench, and a servo motor fixing mechanism, a linear driving mechanism and a lifting platform which are arranged on the workbench, the lifting platform comprises a base, a lifting plate, two second slide blocks and a driving assembly, the base is connected with the linear driving mechanism, and the linear driving mechanism is connected with the lifting plate. The linear driving mechanism drives the lifting plate to be close to or away from the servo motor fixing mechanism, a torque sensor and load equipment are arranged on the lifting plate, a long-strip-shaped limiting groove is formed in the upper end of the base, the two second sliding blocks are arranged in the limiting groove in a sliding mode, the upper ends of the second sliding blocks incline downwards, and the inclination directions of the second sliding blocks are opposite. The lifting plate is arranged in the limiting groove in an up-down sliding mode, second sliding grooves are formed in the lower end of the lifting plate, and the driving assembly is in transmission connection with the two second sliding blocks. The utility model provides a motor torque test tool with a height-adjustable rotating shaft of a torque sensor. The motor torque test tool can be used for torque tests of servo motors of various sizes.
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Description

Technical Field

[0001] The utility model relates to the field of servo motors. More specifically, the utility model relates to a torque test tooling for a servo motor. Background Art

[0002] In order to ensure the quality of new servo motors, it is necessary to detect their performance before the servo motors leave the factory, especially to test the torque of the servo motors. When testing the torque of a servo motor, a special bracket for testing is needed to fix the servo motor, and the output shaft of the servo motor is coaxially connected to the rotating shaft of the torque sensor on the bracket to test the torque of the motor. However, the sizes of different-sized servo motors are different, and the heights of their output shafts are different. The height of the torque sensor on a general test bracket is fixed, which is difficult to meet the requirements. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a motor torque test tooling with an adjustable rotating shaft height of a torque sensor, which can be used for torque testing of various different-sized servo motors.

[0004] The technical solution for the utility model to solve the above technical problems is as follows: A torque test tooling for a servo motor includes a workbench, a servo motor fixing mechanism, a linear driving mechanism, and a lifting platform arranged on the workbench. The lifting platform includes a base, a lifting plate, two second sliders, and a driving component. The base is connected to the linear driving mechanism, and the linear driving mechanism drives it to approach or move away from the servo motor fixing mechanism. A torque sensor and a load device are arranged on the lifting plate. One end of the rotating shaft of the torque sensor is connected to the load device through a first coupling, and the other end is connected to a second coupling for connecting with a motor to be tested. A long strip-shaped limiting groove is arranged at the upper end of the base, and both second sliders are slidably arranged in the limiting groove. The upper ends of the second sliders are inclined downward, and their inclined directions are opposite. The lifting plate is slidably arranged up and down in the limiting groove, and a second sliding groove is arranged at its lower end. The top wall of the second sliding groove is divided into two parts and is respectively inclined corresponding to the two second sliders. The driving component is in transmission connection with the two second sliders and drives them to approach or move away from each other to drive the lifting plate to move up and down.

[0005] Further, in the servo motor torque test tooling, the linear drive mechanism includes a sliding seat, a first slider, a first screw rod, and a first drive motor. A sliding groove corresponding to the workbench is provided at the lower end of the sliding seat. A long strip-shaped first sliding groove is provided at the upper end of the workbench. The first screw rod is arranged in the first sliding groove, one end of which is rotatably connected to the inner wall of the first sliding groove, and the other end passes through the workbench and is connected to the first drive motor. The first slider is slidably arranged in the strip-shaped first sliding groove and is connected to the sliding seat. The first screw rod passes through the first slider and is threadedly connected thereto.

[0006] Further, in the servo motor torque test tooling, the drive assembly includes a second screw rod and a second drive motor. The second screw rod is arranged in the limiting groove, one end of which is rotatably connected to the inner wall of the limiting groove, and the other end passes through the base and is connected to the second drive motor. The second screw rod has two sections of threads with opposite directions. The second screw rod passes through the two second sliders, and the two sections of threads are respectively threadedly connected to the two second sliders.

[0007] Further, in the servo motor torque test tooling, the servo motor fixing mechanism includes a positioning plate and a mounting plate. The positioning plate is vertically arranged on the mounting plate and has a through hole in the middle. The mounting plate is detachably arranged on the workbench. A first groove and a second groove corresponding to the outer shell and the flange of the servo motor are respectively provided at the upper end of the mounting plate.

[0008] Further, in the servo motor torque test tooling, a plurality of mounting holes are arranged at intervals on the mounting plate. A plurality of threaded holes corresponding to the number of the mounting holes and in one-to-one correspondence are provided on the workbench. Bolts are installed in the threaded holes, and the bolts pass through the corresponding mounting holes.

[0009] The beneficial effects of the present utility model are as follows:

[0010] The servo motor test tooling of the present utility model sets servo motor fixing mechanisms with different sizes for servo motors of different sizes to fix the servo motors. At the same time, the linear drive mechanism and the lifting platform drive the torque sensor to move horizontally and lift respectively, facilitating the adjustment of the height of the rotating shaft of the torque sensor to match the output shaft of the servo motor to be tested, so that the servo motor test tooling can be used for the speed test of servo motors of different sizes.

[0011] Other advantages, objectives, and features of the present utility model will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present utility model. Description of the Drawings

[0012] Figure 1 Schematic structural diagram of the motor torque test tooling of the present utility model;

[0013] Figure 2 Schematic connection diagram of the motor torque test tooling of the present utility model and the servo motor;

[0014] Figure 3 Schematic structural diagram of the lifting platform of the present utility model;

[0015] Figure 4 Schematic connection diagram of the linear drive mechanism of the present utility model;

[0016] Figure 5 Schematic structural diagram of the servo motor fixing mechanism of the present utility model Detailed implementation manners

[0017] The following further describes the present utility model in detail with reference to the accompanying drawings, so that those skilled in the art can implement it according to the description in the specification.

[0018] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0019] Figures 1 - 4A servo motor torque test tooling provided by an embodiment of the present utility model includes a workbench 1, a servo motor fixing mechanism, a linear driving mechanism, and a lifting platform disposed on the workbench 1. The lifting platform includes a base 2, a lifting plate 3, two second sliders 4, and a driving assembly. The base 2 is connected to the linear driving mechanism, and the linear driving mechanism drives it to approach or move away from the servo motor fixing mechanism. A torque sensor 5 and a load device 6 are provided on the lifting plate 3. One end of the rotating shaft of the torque sensor 5 is connected to the load device 6 through a first coupling 7, and the other end is connected to a second coupling 8 for connecting with a motor to be tested. A long strip-shaped limiting groove 9 is provided at the upper end of the base 2. Both of the two second sliders 4 are slidably disposed in the limiting groove 9. The upper ends of the second sliders 4 are inclined downward, and the inclination directions of the two are opposite. The lifting plate 3 is slidably disposed up and down in the limiting groove 9, and a second chute is provided at its lower end. The top wall of the second chute is divided into two parts and is respectively inclined corresponding to the two second sliders 4. The driving assembly is in transmission connection with the two second sliders 4 and drives them to approach or move away from each other to drive the lifting plate 3 to move up and down.

[0020] In this embodiment, the servo motor to be tested is fixed on the servo motor fixing mechanism, and then the linear driving mechanism drives the lifting platform to approach the output shaft of the servo motor. Then, according to the height of the output shaft of the servo motor, the lifting platform drives the torque sensor 5 and the load device 6 to move up and down, adjusts the rotating shaft of the dynamic torque sensor 5 to be coaxial with the output shaft of the servo motor, and then the linear driving mechanism drives the lifting platform to approach the output shaft of the servo motor until the output shaft of the servo motor extends into the second coupling 8, and the output shaft of the servo motor can be fixed to the second coupling 8. The second coupling 8 can be replaced according to the size of the output shaft of the servo motor to be tested. When the driving assembly drives the lifting plate 3 to move up and down, the two second sliders 4 slide horizontally in the second chute, and their sliding directions are opposite. The upper ends of the second sliders 4 are attached to the upper ends of the corresponding second chutes, so as to lift the lifting plate 3 through the two second sliders 4. When the driving assembly works, it drives the two second sliders 4 to slide in the reverse direction. When they approach or move away from each other, they drive the lifting plate 3 to move up and down. During the sliding process of the second sliders 4, the limiting groove 9 limits them, and at the same time, the limiting groove 9 also limits the movement track of the lifting plate 3 to ensure its stability during the up and down movement. In order to keep the lifting plate 3 stable, the width of the second slider 4 is the same as the width of the lifting plate 3 to increase the contact area between the two.

[0021] Preferably, as another embodiment of the present invention, the linear drive mechanism includes a sliding seat 10, a first slider 11, a first screw 12, and a first drive motor 13. A sliding groove 14 corresponding to the workbench 1 is provided at the lower end of the sliding seat 10, and a long-strip-shaped first sliding groove 15 is provided at the upper end of the workbench 1. The first screw 12 is arranged in the first sliding groove 15, one end of which is rotatably connected to the inner wall of the first sliding groove 15, and the other end passes through the workbench 1 and is connected to the first drive motor 13. The first slider 11 is slidably arranged in the strip-shaped first sliding groove 15 and is connected to the sliding seat 10. The first screw 12 passes through the first slider 11 and is threadedly connected thereto.

[0022] In this embodiment, the lifting platform is arranged on the sliding seat 10. The sliding seat 10 is slidably connected to the workbench 1 through the sliding groove 14. The first slider 11 is slidably arranged in the first sliding groove 15, and the first sliding groove 15 defines the moving track of the first slider 11. A threaded through hole is arranged on the first slider 11. The first screw 12 passes through the threaded through hole and is threadedly connected to the first slider 11. The first drive motor 13 drives the first screw 12 to rotate. The first screw 12 drives the first slider 11 to move linearly, and the first slider 11 drives the sliding seat 10 to move, thereby realizing the horizontal movement of the lifting platform.

[0023] Preferably, as another embodiment of the present invention, the drive assembly includes a second screw 16 and a second drive motor 17. The second screw 16 is arranged in the limiting groove 9, one end of which is rotatably connected to the inner wall of the limiting groove 9, and the other end passes through the base 2 and is connected to the second drive motor 17. Two sections of threads with opposite directions are provided on the second screw 16. The second screw 16 passes through the two second sliders 4, and the two sections of threads thereof are respectively threadedly connected to the two second sliders 4.

[0024] In this embodiment, a threaded through hole is arranged on the second slider 4. The second screw 16 passes through the threaded through hole and is threadedly connected to the second slider 4. The two sections of threads on the second screw 16 have opposite directions. When the second drive motor 17 drives the second screw 16 to rotate, the second slider 4 moves linearly under the limitation of the limiting groove 9, and at the same time, the moving directions of the two second sliders 4 are opposite.

[0025] Preferably, as another embodiment of the present invention, as Figure 5 shown, the servo motor fixing mechanism includes a positioning plate 18 and a mounting plate 19. The positioning plate 18 is vertically arranged on the mounting plate 19 and is provided with a through hole in the middle thereof. The mounting plate 19 is detachably arranged on the workbench 1. The upper end of the mounting plate 19 is provided with a first groove 20 and a second groove 21 corresponding to the outer shell and flange of the servo motor respectively.

[0026] In this embodiment, by providing a first groove 20 and a second groove 21 at the upper end of the mounting plate 19 and quickly positioning them with the housing and flange of the servo motor, the output shaft of the servo motor passes through the through hole in the middle of the positioning plate 18, and the flange of the servo motor is connected to the mounting plate 19 by an existing bolt connection method, so that the servo motor can be fixed. In this embodiment, multiple sets of servo motor fixing mechanisms with different sizes are provided, corresponding to servo motors of different sizes respectively, and the servo motor fixing mechanism can be replaced as needed. When fixing the mounting plate 19, a plurality of mounting holes are provided at intervals on the mounting plate 19, and a plurality of threaded holes corresponding to and in one-to-one correspondence with the number of mounting holes are provided on the workbench 1. Bolts are installed in the threaded holes, and the bolts penetrate the corresponding mounting holes.

[0027] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the embodiments shown and described herein.

Claims

1. A servo motor torque test tool, characterized in that: The invention comprises a workbench (1), a servo motor fixing mechanism, a linear drive mechanism and a lifting platform arranged on the workbench (1); the lifting platform comprises a base (2), a lifting plate (3), two second slide blocks (4) and a driving assembly; the base (2) is connected to the linear drive mechanism, and the linear drive mechanism drives it to approach or move away from the servo motor fixing mechanism; the lifting plate (3) is provided with a torque sensor (5) and a load device (6); one end of the rotating shaft of the torque sensor (5) is connected to the load device (6) via a first coupling (7), and the other end is connected to a second coupling (7) for connecting to a motor to be tested. A coupling (8), a long limiting groove (9) is provided at the upper end of the base (2), and the two second sliding blocks (4) are both slidably arranged in the limiting groove (9), and the upper ends of the second sliding blocks (4) are both inclined downward, and the two inclination directions are opposite. The lifting plate (3) can be slidably arranged in the limiting groove (9) up and down, and a second sliding groove is provided at the lower end thereof. The top wall of the second sliding groove is divided into two parts, and is respectively inclined corresponding to the two second sliding blocks (4). The driving component is transmission-connected with the two second sliding blocks (4), and drives the two to move closer to or away from each other, so as to drive the lifting plate (3) to move up and down.

2. A servo motor torque test fixture as claimed in claim 1, characterized in that: The linear drive mechanism comprises a sliding seat (10), a first slider (11), a first screw rod (12) and a first drive motor (13); the lower end of the sliding seat (10) is provided with a sliding groove (14) corresponding to the workbench (1); the upper end of the workbench (1) is provided with a first long-shaped sliding groove (15); the first screw rod (12) is arranged in the first sliding groove (15), one end of which is rotatably connected to the inner wall of the first sliding groove (15), and the other end of which passes through the workbench (1) and is connected to the first drive motor (13); the first slider (11) is slidably arranged in the first strip-shaped sliding groove (15) and is connected to the sliding seat (10); the first screw rod (12) passes through the first slider (11) and is threadedly connected to it.

3. A servo motor torque test fixture as claimed in claim 1, characterized in that: The driving assembly comprises two second screw rods (16) and a second driving motor (17). The second screw rod (16) is arranged in the limiting groove (9), one end of which is rotatably connected to the inner wall of the limiting groove (9), and the other end of which passes through the base (2) and is connected to the second driving motor (17). The second screw rod (16) has two sections of threads in opposite directions. The second screw rod (16) passes through the two second sliding blocks (4), and the two sections of the threads are respectively threadedly connected to the two second sliding blocks (4).

4. A servo motor torque test fixture as described in any one of claims 1 to 3, characterized in that: The servo motor fixing mechanism comprises a positioning plate (18) and a mounting plate (19); the positioning plate (18) is vertically arranged on the mounting plate (19) and has a through hole in the middle; the mounting plate (19) is detachably arranged on the workbench (1); and the upper end of the mounting plate (19) is provided with a first groove (20) and a second groove (21) corresponding to the housing and flange of the servo motor respectively.

5. A servo motor torque test fixture as claimed in claim 4, characterized in that: The mounting plate (19) is provided with a plurality of mounting holes at intervals, and the workbench (1) is provided with a plurality of threaded holes corresponding to the number of the mounting holes and one-to-one, wherein bolts are installed in the threaded holes and penetrate the corresponding mounting holes.