Torque detection device for servo motor

Abstract

The utility model discloses a torque detection device for a servo motor, which belongs to the technical field of servo motor detection and comprises a detection table, a first mounting seat is arranged on one side of the top surface of the detection table, a servo motor body is mounted on the surface of the first mounting seat through screws, and a second mounting seat is arranged on the other side of the top surface of the detection table. Load equipment is fixedly mounted on the surface of the second mounting seat; the servo motor detection device further comprises a detection assembly, and the detection assembly is arranged above the detection table and located between the servo motor body and the load equipment. The rotating seat and the rotating shaft are matched with multiple groups of torque sensors of different models for use, the structure is simple, convenience and practicability are realized, the torque sensor of a proper model can be selected according to the torque range and precision requirements of the servo motor during detection, the torque sensor does not need to be disassembled and assembled during use every time, the operation steps are reduced, and the detection efficiency is improved. The detection efficiency is greatly improved, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] This utility model relates to the field of servo motor testing technology, specifically a torque testing device for servo motors. Background Technology

[0002] Servo motors can control speed and position with very high accuracy. They can convert voltage signals into torque and speed to drive the controlled object. The rotor speed of a servo motor is controlled by the input signal and can respond quickly. In automatic control systems, they are used as actuators and have characteristics such as small electromechanical time constant and high linearity. They can convert the received electrical signals into angular displacement or angular velocity output on the motor shaft. To ensure the product quality of servo motors, torque testing is required before they leave the factory.

[0003] A search revealed that Chinese Patent Publication No. CN216246932U discloses a torque detection device for a servo motor. This device adjusts the height of the moving base on the L-shaped adjustment frame and the length of the L-shaped adjustment frame on the support column according to different models and sizes of servo motors. The output shaft of the servo motor is connected to a coupling, causing a threaded rod to drive a connecting block to slide along a slide groove. A detection rod on the connecting block pushes a detection plate, causing the detection plate to slide along a slide rod. Simultaneously, a compression spring fitted on the slide rod increases the resistance of the detection plate during movement. As the detection plate moves towards the fixed plate, a rack drives a gear to rotate. An encoder calculates the torque of the servo motor being tested based on the number of gear rotations. Meanwhile, a limiting groove at the bottom of the rack slides along a limiting slider, ensuring that the rack and gear teeth are engaged, thereby improving the accuracy of the measurement data.

[0004] However, this device also has the following drawbacks:

[0005] Before testing the torque of a servo motor, a suitable torque sensor must be selected based on the torque range and accuracy requirements of the servo motor. This ensures that the range of the torque sensor can cover the maximum torque output of the servo motor and that the accuracy meets the actual measurement needs. When using this device for testing, different models of torque sensors need to be disassembled and assembled each time, which is cumbersome and has low testing efficiency. This device does not solve this problem. Utility Model Content

[0006] The purpose of this invention is to provide a torque detection device for servo motors. By setting a rotating base and a rotating shaft to cooperate with multiple sets of torque sensors of different models, the appropriate model of torque sensor can be selected according to the torque range and accuracy requirements of the servo motor during detection. There is no need to disassemble and assemble the torque sensor every time it is used, which reduces the operation steps and greatly improves the detection efficiency, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A torque detection device for a servo motor includes a detection platform. A first mounting base is provided on one side of the top surface of the detection platform. A servo motor body is mounted on the surface of the first mounting base by screws. A second mounting base is provided on the other side of the top surface of the detection platform. A load device is fixedly mounted on the surface of the second mounting base.

[0009] It also includes a detection component, which is set above the detection platform and located between the servo motor body and the load device. The detection component includes a rotating base, around which multiple sets of torque sensors of different types are arranged, and rotating shafts are fixedly installed on both sides of the rotating base.

[0010] Preferably, the torque sensor is installed inside the fixed base, which is fixed to the circumference of the rotating base by screws.

[0011] Preferably, the rotating shaft is rotatably connected to the top of the support column, and the bottom of the support column is fixedly installed on the testing table.

[0012] Preferably, the surface of the rotating shaft has a first pin hole corresponding to the torque sensor, and the top of the support column has a second pin hole, with a positioning pin slidably installed in the first and second pin holes.

[0013] Preferably, the first mounting base and the second mounting base have mounting grooves on both sides, and a positioning screw is slidably installed in the mounting groove. The bottom of the positioning screw is threadedly connected to the surface of the testing table.

[0014] Preferably, a first coupling is installed at the output end of the servo motor body, and the first coupling is connected to one end of the torque sensor for transmission.

[0015] Preferably, the connecting shaft of the load device is equipped with a second coupling, which is connected to the other end of the torque sensor in a transmission manner.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model uses a rotating base and shaft to work with multiple torque sensors of different models. It has a simple structure and is convenient and practical. During testing, the appropriate torque sensor model can be selected according to the torque range and accuracy requirements of the servo motor. There is no need to disassemble and assemble the torque sensor every time it is used, which reduces the operation steps, greatly improves the testing efficiency, and reduces the labor intensity of the operators. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the component structure for testing;

[0020] Figure 3 This is a schematic diagram of the testing station structure.

[0021] In the diagram: 1. Testing table; 2. First mounting base; 3. Servo motor body; 4. Second mounting base; 5. Load device; 6. Testing component; 601. Rotating seat; 602. Fixed seat; 603. Torque sensor; 7. Rotating shaft; 8. Support column; 9. Positioning pin; 10. First pin hole; 11. First coupling; 12. Second coupling; 13. Second pin hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-3 This utility model provides a technical solution:

[0024] A torque detection device for a servo motor includes a detection platform 1. A first mounting base 2 is provided on one side of the top surface of the detection platform 1. A servo motor body 3 is mounted on the surface of the first mounting base 2 by screws. A second mounting base 4 is provided on the other side of the top surface of the detection platform 1. A load device 5 is fixedly mounted on the surface of the second mounting base 4. A first coupling 11 is installed at the output end of the servo motor body 3. The first coupling 11 is connected to one end of a torque sensor 603. A second coupling 12 is installed on the connecting shaft of the load device 5. The second coupling 12 is connected to the other end of the torque sensor 603.

[0025] By setting the first coupling 11, the torque of the servo motor body 3 output end can be transmitted to the torque sensor 603. The torque sensor 603 is installed between the output end of the servo motor body 3 and the load device 5. The strain gauge and other sensitive elements inside it will deform with the twisting of the shaft, thereby changing its own resistance value. The resistance change is converted into voltage change through circuits such as Wheatstone bridge, and then the torque is measured, thereby realizing the detection of the torque of the servo motor body 3.

[0026] It also includes a detection component 6, which is set above the detection table 1 and located between the servo motor body 3 and the load device 5. The detection component 6 includes a rotating base 601, and multiple sets of torque sensors 603 of different models are arranged around the rotating base 601. Rotating shafts 7 are fixedly installed on both sides of the rotating base 601. The torque sensors 603 are installed inside the fixed base 602. The fixed base 602 is fixed to the surrounding area of ​​the rotating base 601 by screws. The rotating shafts 7 are rotatably connected to the top of the support column 8. The bottom of the support column 8 is fixedly installed on the detection table 1.

[0027] By setting up a rotating base 601 to work with a rotating shaft 7 to use multiple sets of torque sensors 603 of different models, different models of torque sensors 603 can be adjusted between the servo motor body 3 and the load device 5 by rotating the rotating base 601 during testing. This allows for the selection of the appropriate model of torque sensor 603 according to the torque range and accuracy requirements of the servo motor body 3. There is no need to disassemble and assemble the torque sensor 603 each time it is used, which reduces the number of operation steps, greatly improves the testing efficiency, and reduces the labor intensity of the operators.

[0028] The surface of the rotating shaft 7 has a first pin hole 10 corresponding to the torque sensor 603, and the top of the support column 8 has a second pin hole 13. A positioning pin 9 is slidably installed in the first pin hole 10 and the second pin hole 13.

[0029] By setting the positioning pin 9 to work with the first pin hole 10 and the second pin hole 13, the position of the rotating shaft 7 and the support column 8 can be locked after the rotating seat 601 is adjusted, preventing the rotating seat 601 from rotating, thereby preventing the torque sensor 603 from moving unexpectedly during the detection process and ensuring the accuracy of the detection results.

[0030] The first mounting base 2 and the second mounting base 4 have mounting grooves on both sides. Positioning screws are slidably installed in the mounting grooves, and the bottom of the positioning screws is threadedly connected to the surface of the test table 1.

[0031] By setting mounting slots and positioning screws, the first mounting base 2 and the second mounting base 4 can be moved in a directional manner, thereby facilitating the connection between the servo motor body 3 and the load device 5 and the torque sensor 603.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A torque detection device for a servo motor, characterized in that: The test platform (1) includes a first mounting base (2) on one side of the top surface of the test platform (1), a servo motor body (3) is mounted on the surface of the first mounting base (2) by screws, and a second mounting base (4) is provided on the other side of the top surface of the test platform (1), and a load device (5) is fixedly mounted on the surface of the second mounting base (4). It also includes a detection component (6), which is located above the detection platform (1) and between the servo motor body (3) and the load device (5). The detection component (6) includes a rotating seat (601), and multiple sets of torque sensors (603) of different types are arranged around the rotating seat (601). Rotating shafts (7) are fixedly installed on both sides of the rotating seat (601).

2. The torque detection device for a servo motor according to claim 1, characterized in that: The torque sensor (603) is installed inside the fixed base (602), which is fixed to the circumference of the rotating base (601) by screws.

3. The torque detection device for a servo motor according to claim 1, characterized in that: The rotating shaft (7) is rotatably connected to the top of the support column (8), and the bottom of the support column (8) is fixedly installed on the testing table (1).

4. The torque detection device for a servo motor according to claim 3, characterized in that: The rotating shaft (7) has a first pin hole (10) corresponding to the torque sensor (603) on its surface, and a second pin hole (13) is provided on the top of the support column (8). A positioning pin (9) is slidably installed in the first pin hole (10) and the second pin hole (13).

5. The torque detection device for a servo motor according to claim 1, characterized in that: The first mounting base (2) and the second mounting base (4) have mounting grooves on both sides. A positioning screw is slidably installed in the mounting groove, and the bottom of the positioning screw is threadedly connected to the surface of the testing table (1).

6. The torque detection device for a servo motor according to claim 1, characterized in that: The output end of the servo motor body (3) is equipped with a first coupling (11), which is connected to one end of the torque sensor (603) in a transmission connection.

7. The torque detection device for a servo motor according to claim 1, characterized in that: The connecting shaft of the load device (5) is equipped with a second coupling (12), which is connected to the other end of the torque sensor (603) in a transmission connection.

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