Motor rotation angle inspection tool

Abstract

The utility model discloses a motor rotation angle inspection tool, include: bottom plate is equipped with motor clamping assembly, motor positioning mechanism and rotation angle inspection subassembly on the bottom plate, rotation angle inspection subassembly includes the support assembly of being equipped with on the bottom plate, the end of support assembly is equipped with three jaw chuck, still is equipped with encoder, and encoder is connected with three jaw chuck coaxially, and three jaw chuck can clamp the output shaft of motor and rotate with the rotation of motor output shaft, still include load loading subassembly, and load loading subassembly is slidably and liftablely equipped on the bottom plate, and load loading subassembly is connected with the output shaft of motor and provides adjustable load to motor. Its simple structure, easy operation. Three jaw chuck realizes the universal adjustment through support assembly, and the magnetic powder brake realizes the universal adjustment through the fine adjustment sliding table, guarantees the coaxial degree of both and motor output shaft connection, makes the tool satisfy the inspection work of different model motor simultaneously, further promotes the inspection accuracy and applicability.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, and specifically relates to a tooling for inspecting motor rotation angle. Background Technology

[0002] With the rapid development of industrial automation, precision manufacturing, and intelligent equipment, the angular accuracy of motors, as core power components, directly determines the stability and precision of equipment operation. For example, in scenarios such as CNC machine tool positioning, robot joint driving, and optical instrument focusing, even an angular error of ±0.1° can lead to scrapped parts, motion jamming, or detection deviations. Therefore, inspecting the angular accuracy of motors has become a crucial step in motor manufacturing, equipment maintenance, and performance calibration. Early industry practices often used contact tools such as manual angle gauges and dial pointers for inspection. These methods not only rely on operator experience but also have inherent limitations, such as ±0° accuracy. The existing inspection fixtures have a large error range of 0.5° to ±1°, and cannot meet the accuracy requirements of high-precision motors (such as stepper motors and precision servo motors) that require an accuracy of ±0.001° to ±0.1°. Furthermore, manual operation is inefficient, data recording is prone to errors, and it is difficult to adapt to the rapid quality inspection processes in mass production. With the development of optoelectronic and sensing technologies, non-contact inspection equipment (such as photoelectric encoders and laser interferometers) is gradually becoming mainstream. However, their technological development and application still need to address issues such as equipment calibration, coaxiality error avoidance, and adaptation to multiple load conditions to further improve inspection accuracy and applicability, meeting the stringent requirements for motor rotation angle inspection in different scenarios. Additionally, existing inspection fixtures suffer from inconvenient installation and limitations in that one fixture can only be used for one type of motor.

[0003] Therefore, the above problems urgently need to be solved. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above deficiencies, the purpose of this utility model is to provide a motor rotation angle inspection fixture, which aims to solve the above technical problems.

[0005] Technical solution: To achieve the above objectives, this utility model provides a fixture for inspecting motor rotation angle, comprising: The base plate is provided with a motor clamping assembly for clamping the motor, a motor positioning mechanism for positioning the motor, and an angle inspection assembly; The corner inspection component includes a bracket assembly mounted on a base plate. The end of the bracket assembly is rotatably equipped with a three-jaw chuck and an encoder. The encoder is coaxially connected to the three-jaw chuck. The three-jaw chuck can clamp the output shaft of the motor and rotate with the output shaft of the motor. It also includes a load loading component, which is slidably and vertically mounted on the base plate and is connected to the output shaft of the motor to provide an adjustable load to the motor.

[0006] Furthermore, the bracket assembly includes a sliding base, a telescopic rod, and a mounting plate. The sliding base is slidably mounted longitudinally on the base plate, the telescopic rod is mounted on the sliding base, and the mounting plate is mounted on the telescopic rod. A pipe clamp is provided on the upper part of the sliding base, and the telescopic rod is located in the pipe clamp. Bolts pass through the pipe clamp to lock the telescopic rod. The three-jaw chuck and encoder are located at the end of the mounting plate.

[0007] Through the above technical solution, the longitudinal sliding on the base plate, the lateral extension and retraction of the telescopic rod, and the rotation adjustment of the telescopic rod around the pipe clamp realize the position adjustment of the three-jaw chuck at the end of the mounting plate.

[0008] Furthermore, the motor clamping assembly includes a mounting base and an elbow clamp. The mounting base is bolted to the base plate, and the elbow clamp is mounted on the mounting base. A pressure head is provided at the end of the elbow clamp. The motor under test is clamped by pressing down with the elbow clamp and the pressure head.

[0009] Furthermore, the elbow clamp is provided with an adjusting groove, and an adjusting bolt is provided in the adjusting groove. The adjusting bolt is locked in the adjusting groove by a nut, and the pressure head is located at the end of the adjusting bolt. The adjusting bolt can be moved longitudinally in the adjusting groove to adjust its position, which is equivalent to adjusting the position of the pressure head. At the same time, the height of the pressure head on the adjusting bolt can be adjusted to meet the needs of motors of different specifications.

[0010] Furthermore, the motor positioning mechanism is a boss with a limiting groove on the base plate.

[0011] Furthermore, the load loading assembly includes a fine-tuning slide and a magnetic powder brake. The fine-tuning slide is mounted on the base plate, and the magnetic powder brake is fixedly mounted on the top of the fine-tuning slide. The magnetic powder brake is connected to the output shaft of the motor. The fine-tuning slide includes a cross slide at the bottom, and a scissor-type lifting slide is provided on the cross slide. The magnetic powder brake is located on the scissor-type lifting slide.

[0012] Through the above scheme, the cross slide can achieve horizontal and vertical position adjustment, and the scissor lift can achieve lifting adjustment, thus realizing the three-way adjustment of the magnetic powder brake.

[0013] Furthermore, it also includes a control motherboard mounted on the base plate, which is used to set inspection parameters and output inspection results.

[0014] Furthermore, an acrylic baffle is provided around the base plate.

[0015] As can be seen from the above technical solution, this utility model has the following beneficial effects: This utility model provides a fixture for inspecting motor rotation angle. The motor under test is positioned on a base plate by a motor positioning mechanism, then clamped by a motor clamping assembly. The motor's output shaft is then connected to a load loading assembly. The position of the three-jaw chuck is adjusted via a bracket assembly to ensure it is coaxial with and clamps the motor's output shaft. The motor is then started, driving the three-jaw chuck to rotate, with an encoder rotating synchronously to collect the motor's rotation angle information. The load loading assembly can apply different loads to the motor during this process, verifying the accuracy of the motor's rotation angle under different load conditions. The fixture is simple in structure and easy to operate. The three-jaw chuck achieves universal adjustment via the bracket assembly, and the magnetic powder brake achieves universal adjustment via a fine-tuning slide, ensuring the coaxiality of both components connected to the motor's output shaft. This also allows the fixture to meet the inspection needs of different motor models, further improving inspection accuracy and applicability. Attached Figure Description

[0016] Figure 1 This is a top view of a motor rotation angle inspection fixture according to the present invention; Figure 2 This is a front view of a motor rotation angle inspection fixture according to the present invention (acrylic baffle is hidden).

[0017] In the picture: 1-Base plate, 11-Control main board, 12-Acrylic baffle; 2-Motor clamping assembly, 21-Mounting base, 22-Elbow clamp, 221-Slide groove, 222-Adjusting bolt, 23-Pressure head; 3-Corner inspection assembly, 31-Bracket assembly, 311-Sliding base, 312-Telescopic rod, 313-Mounting plate, 32-Three-jaw chuck, 33-Encoder; 4 Load loading components, 41- fine-tuning slide, 42- magnetic powder brake. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. Example

[0019] In this embodiment, as Figure 1 , Figure 2 This utility model discloses a tooling for inspecting the rotation angle of a motor, comprising: The base plate 1 is provided with a motor clamping assembly 2 for clamping the motor, a motor positioning mechanism for positioning the motor, and a rotation angle inspection assembly 3. The corner inspection component 3 includes a bracket assembly 31 mounted on the base plate 1. The end of the bracket assembly 31 is rotatably equipped with a three-jaw chuck 32 and an encoder 33. The encoder 33 is coaxially connected to the three-jaw chuck 32. The three-jaw chuck 32 can clamp the output shaft of the motor and rotate with the output shaft of the motor. It also includes a load loading component 4, which is slidably and vertically mounted on the base plate 1. The load loading component 4 is connected to the output shaft of the motor to provide an adjustable load to the motor.

[0020] In this embodiment, the motor under test is positioned on the base plate 1 by a motor positioning mechanism, and then clamped by a motor clamping assembly 2. The motor's output shaft is then connected to the load loading assembly 4. The position of the three-jaw chuck 32 is adjusted by the bracket assembly 31 so that the three-jaw chuck 32 is coaxial with the motor's output shaft and clamps it. The motor is then started, driving the three-jaw chuck 32 to rotate, and the encoder 33 rotates synchronously to collect the motor's rotation angle information. During this process, the load loading assembly 4 can provide different loads to the motor to verify the accuracy of the motor's rotation angle under different load conditions.

[0021] Specifically, the support assembly 31 includes a sliding base 311, a telescopic rod 312, and a mounting plate 313. The sliding base 311 is longitudinally slidably mounted on the base plate 1, the telescopic rod 312 is mounted on the sliding base 311, and the mounting plate 313 is mounted on the telescopic rod 312. A pipe clamp is provided on the upper part of the sliding base 311, and the telescopic rod 312 is located in the pipe clamp. Bolts pass through the pipe clamp to lock the telescopic rod 312. The three-jaw chuck 32 and the encoder 33 are located at the end of the mounting plate 313.

[0022] In this embodiment, the sliding base 311 is slidably mounted on the base plate 1 via a longitudinally arranged linear guide rail. After sliding into position, it is locked by bolts, thus realizing the longitudinal adjustment of the three-jaw chuck 32. The telescopic adjustment of the telescopic rod 312 realizes the lateral adjustment of the three-jaw chuck 32. The height adjustment of the three-jaw chuck 32 can be realized by rotating the telescopic rod 312 on the sliding base 311. The combination of these three adjustment methods can realize the adjustment of the three-jaw chuck 32 to any position.

[0023] Specifically, the motor clamping assembly 2 includes a mounting base 21 and an elbow clamp 22. The mounting base 21 is bolted to the base plate 1, and the elbow clamp 22 is mounted on the mounting base 21. The elbow clamp 22 has a pressure head 23 at its end.

[0024] In a further optimized solution, the elbow clamp 22 is provided with an adjusting groove 221, and an adjusting bolt 222 is provided in the adjusting groove 221. The adjusting bolt 222 is locked in the adjusting groove 221 by a nut, and the pressure head 23 is located at the end of the adjusting bolt 222.

[0025] The motor positioning mechanism is a boss with a limiting groove on the base plate 1. In this embodiment, the motor positioning mechanism is fixed to the base plate 1 by bolts. When inspecting motors of different specifications, simply remove the bolts to remove the mechanism and install the corresponding motor positioning mechanism.

[0026] Specifically, the load loading component 4 includes a fine-tuning slide 41 and a magnetic powder brake 42. The fine-tuning slide 41 is mounted on the base plate 1, and the magnetic powder brake 42 is fixedly mounted on the top of the fine-tuning slide 41. The magnetic powder brake 42 is connected to the output shaft of the motor. The fine-tuning slide 41 includes a cross slide at the bottom, and a scissor-type lifting slide is provided on the cross slide. The magnetic powder brake 42 is provided on the scissor-type lifting slide.

[0027] In this embodiment, the cross slide is a mechanical structure that achieves precise two-dimensional movement in a plane through an orthogonal combination of the X-axis and Y-axis. The core principle is to convert the rotational motion of the power source into linear motion using a ball screw and guide rail. The scissor-type lifting slide achieves precise vertical lifting through a combination of screw drive and scissor bracket. This allows for precise adjustment of the position of the magnetic powder brake 42 to ensure a high-precision coaxial connection with the output shaft of the motor under test, and adapts to different motor models.

[0028] Specifically, it also includes a control mainboard 11 mounted on the base plate 1. The control mainboard 11 is used to set inspection parameters and output inspection results. The control mainboard sends a command, and after the motor controller receives the command, it outputs a PWM drive signal to the motor stator winding. The motor rotates autonomously, and the rotor drives the output shaft, three-jaw chuck 32, and encoder 33 to rotate synchronously. The encoder 33 outputs A / B phase pulse signals in real time. The data acquisition unit in the control mainboard 11 calculates the actual rotation angle by counting pulses. When the motor rotates to the commanded rotation angle, the motor controller triggers a "stop signal". After the motor is powered off, it continues to rotate by inertia. The difference between the "command stop angle" and the "actual stop angle" is calculated to complete one rotation angle inspection.

[0029] Specifically, an acrylic baffle 12 is provided around the base plate 1. Furthermore, in order to prevent external interference and external impurities from entering, a transparent cover plate can be installed on the acrylic baffle 12.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A fixture for inspecting motor rotation angle, characterized in that: include: The base plate (1) is provided with a motor clamping assembly (2) for clamping the motor, a motor positioning mechanism for positioning the motor, and a rotation angle inspection assembly (3). The corner inspection component (3) includes a bracket assembly (31) mounted on the base plate (1). The end of the bracket assembly (31) is rotatably equipped with a three-jaw chuck (32) and an encoder (33). The encoder (33) is coaxially connected to the three-jaw chuck (32). The three-jaw chuck (32) can clamp the output shaft of the motor and rotate with the output shaft of the motor. It also includes a load loading component (4), which is slidably and liftably mounted on the base plate (1). The load loading component (4) is connected to the output shaft of the motor to provide an adjustable load to the motor.

2. The motor rotation angle inspection fixture according to claim 1, characterized in that: The bracket assembly (31) includes a sliding base (311), a telescopic rod (312), and a mounting plate (313). The sliding base (311) is slidably mounted on the base plate (1), the telescopic rod (312) is mounted on the sliding base (311), and the mounting plate (313) is mounted on the telescopic rod (312).

3. The motor rotation angle inspection fixture according to claim 2, characterized in that: The upper part of the sliding base (311) is provided with a pipe clamp, the telescopic rod (312) is located in the pipe clamp, the bolt passes through the pipe clamp to lock the telescopic rod (312), and the three-jaw chuck (32) and encoder (33) are located at the end of the mounting plate (313).

4. The motor rotation angle inspection fixture according to claim 1, characterized in that: The motor clamping assembly (2) includes a mounting base (21) and an elbow clamp (22). The mounting base (21) is bolted to the base plate (1), and the elbow clamp (22) is mounted on the mounting base (21). The elbow clamp (22) has a pressure head (23) at its end.

5. The motor rotation angle inspection fixture according to claim 4, characterized in that: The elbow clamp (22) is provided with an adjustment groove (221), and an adjustment bolt (222) is provided in the adjustment groove (221). The adjustment bolt (222) is locked in the adjustment groove (221) by a nut, and the pressure head (23) is located at the end of the adjustment bolt (222).

6. The motor rotation angle inspection fixture according to claim 1, characterized in that: The motor positioning mechanism is a boss with a limiting groove on the base plate (1).

7. The motor rotation angle inspection fixture according to claim 1, characterized in that: The load loading assembly (4) includes a fine-tuning slide (41) and a magnetic powder brake (42). The fine-tuning slide (41) is mounted on the base plate (1), and the magnetic powder brake (42) is fixedly mounted on the top of the fine-tuning slide (41). The magnetic powder brake (42) is connected to the output shaft of the motor. The fine-tuning slide (41) includes a cross slide at the bottom, and a scissor lift slide is provided on the cross slide. The magnetic powder brake (42) is provided on the scissor lift slide.

8. The motor rotation angle inspection fixture according to claim 1, characterized in that: It also includes a control motherboard (11) mounted on the base plate (1), which is used to set inspection parameters and output inspection results.

9. The motor rotation angle inspection fixture according to claim 1, characterized in that: The base plate (1) is surrounded by acrylic baffles (12).

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