Encoder test fixture

Abstract

The utility model relates to the technical field of encoder testing, in particular to an encoder testing jig which comprises a base, a motor, a support, an upper jig seat and a lower jig seat, the motor is arranged on the base, the support is located above the motor, the upper jig seat is arranged on the support, the lower jig seat is arranged on the motor, and the motor is arranged on the support. The upper jig seat is provided with a fixed encoder, the lower jig seat is provided with a tested encoder, and the fixed encoder and the tested encoder are oppositely arranged; and the motor is used for driving the lower jig seat to drive the tested encoder to rotate so as to test the tested encoder. According to the utility model, the motor drives the lower jig seat to drive the tested encoder to rotate, and the tested encoder can be tested and calibrated with high precision in cooperation with the fixed encoder. And the test accuracy and reliability can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of encoder testing, in particular to an encoder testing fixture. Background Art

[0002] The encoder plays a very important role in the motor. It is mainly used to measure the position, speed and direction of the motor rotor. This information is crucial for motor control and monitoring. The encoder can provide accurate position information so that the control system can know the current position of the motor rotor. This is crucial for precise position control, especially in applications that require precise positioning, such as machine tool processing, robotic motion and other fields. The role of the encoder on the motor is to provide real-time position, speed and direction information, providing the necessary feedback for the motor control system, so as to achieve precise control and monitoring.

[0003] Encoders need to be tested before they are used. Encoder testing refers to testing the performance, accuracy, and reliability of encoders. The deviation between the position information output by the encoder at different positions and the actual position is tested to evaluate the accuracy of its position measurement. Existing encoder tests are unstable in the accuracy test and calibration of encoders, resulting in inaccurate tests and deviations in calibration. Therefore, new improvements are needed for existing encoder tests. Utility Model Content

[0004] In order to solve the above problems, the utility model drives the motor to drive the encoder to rotate, and cooperates with the fixed encoder to perform high-precision testing and calibration on the encoder to ensure the accuracy and reliability of the test.

[0005] The technical solution adopted by the utility model is: an encoder test fixture, comprising a base, a motor, a bracket, an upper fixture seat and a lower fixture seat, the motor is arranged on the base, the bracket is located above the motor, the upper fixture seat is arranged on the bracket, the lower fixture seat is arranged on the motor, the upper fixture seat is provided with a fixed encoder, the lower fixture seat is provided with an encoder to be tested, the fixed encoder and the encoder to be tested are arranged oppositely; the motor is used to drive the lower fixture seat to drive the encoder to be tested to rotate, so as to test the encoder to be tested.

[0006] A further improvement to the above scheme is that the base is provided with a fixed connection part, and the fixed end of the motor is arranged on the fixed connection part; the base is provided with a support rod on the outside of the fixed connection part, and the bracket is arranged at the top end of the support rod.

[0007] A further improvement to the above solution is that a turntable is provided at the driving end of the motor, the lower fixture seat is provided on the turntable, and the motor is used to drive the turntable to rotate, thereby driving the lower fixture seat to rotate.

[0008] A further improvement to the above solution is that a mounting platform is provided at the axis center of the turntable, a rotating shaft is provided on the mounting platform, and one end of the rotating shaft passes through and is rotatably connected to the upper fixture seat.

[0009] A further improvement to the above scheme is that the upper fixture seat includes a fixed flange, a bearing and a connecting column, the fixed flange is arranged on the bracket, the bearing is arranged on the fixed flange, the connecting column is arranged on the side of the fixed flange facing the lower fixture seat, and the connecting column is used to install a fixed encoder.

[0010] A further improvement to the above solution is that one end of the rotating shaft passes through and is rotatably connected to the bearing.

[0011] A further improvement to the above solution is that the lower fixture seat is arranged on the outer periphery of the mounting platform, and the lower fixture seat is provided with a mounting portion, and the mounting portion is used to mount the encoder to be measured.

[0012] A further improvement to the above solution is that both the fixed encoder and the encoder to be measured are absolute value encoders.

[0013] A further improvement to the above solution is that both the fixed encoder and the encoder to be measured are grating encoders.

[0014] A further improvement to the above solution is that a gap is left between the fixed encoder and the encoder to be measured.

[0015] The beneficial effects of the utility model are:

[0016] Compared with the existing encoder test, the utility model drives the encoder under test to rotate by the motor-driven lower fixture seat, and cooperates with the fixed encoder to perform high-precision testing and calibration on the encoder under test. Such a design can ensure the accuracy and reliability of the test. The fixture structure is reasonably designed and easy to operate. The staff can easily install and adjust the encoder under test, and quickly start the motor for testing, which improves work efficiency. The design of the base, bracket and other components makes the structure of the entire test system stable and can maintain stability during the test process, thereby ensuring the reliability of the test results. Through this test fixture, the repeatability test of the encoder under test can be achieved, its performance and stability can be verified, and important data support can be provided for quality control in the production process. The fixed encoder is set relative to the encoder under test, and a standardized test process and method can be established to ensure that each test is carried out according to the same standard, which is conducive to improving the consistency and comparability of the test results. The utility model has a reasonable design, convenient operation, and can provide an accurate, stable and reliable test environment, which is of great significance for testing and quality control of encoders in large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the encoder test fixture of the utility model;

[0018] Figure 2 for Figure 1 A three-dimensional diagram of the encoder test fixture from another perspective;

[0019] Figure 3 for Figure 1 The main view of the encoder test fixture;

[0020] Figure 4 for Figure 3 Sectional view of AA in the middle;

[0021] Figure 5 This is a structural schematic diagram of an embodiment of the encoder test fixture of the utility model;

[0022] Figure 6 It is a structural schematic diagram of another embodiment of the encoder test fixture of the present utility model.

[0023] Explanation of the reference numerals: base 1, fixed connection part 11, support rod 12, motor 2, turntable 21, mounting table 211, rotating shaft 212, bracket 3, upper fixture seat 4, fixed flange 41, bearing 42, connecting column 43, lower fixture seat 5, mounting part 51, fixed encoder 6, encoder under test 7. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Figure 1 to Figure 6 As shown, in one embodiment of the utility model, an encoder test fixture is involved, including a base 1, a motor 2, a bracket 3, an upper fixture seat 4 and a lower fixture seat 5, wherein the motor 2 is arranged on the base 1, the bracket 3 is located above the motor 2, the upper fixture seat 4 is arranged on the bracket 3, the lower fixture seat 5 is arranged on the motor 2, the upper fixture seat 4 is provided with a fixed encoder 6, the lower fixture seat 5 is provided with a tested encoder 7, and the fixed encoder 6 is arranged relative to the tested encoder 7; the motor 2 is used to drive the lower fixture seat 5 to drive the tested encoder 7 to rotate, so as to test the tested encoder 7. In this embodiment, the motor 2 drives the lower fixture seat 5 to drive the tested encoder 7 to rotate, and cooperates with the fixed encoder 6 to perform high-precision testing and calibration on the tested encoder 7. Such a design can ensure the accuracy and reliability of the test. The fixture structure is reasonably designed and easy to operate. The staff can easily install and adjust the tested encoder 7, and quickly start the motor 2 for testing, thereby improving work efficiency. The design of the base 1, bracket 3 and other components makes the entire test system structure stable and can maintain stability during the test process, thereby ensuring the reliability of the test results. Through this test fixture, the repeatability test of the encoder 7 under test can be achieved to verify its performance and stability, providing important data support for quality control in the production process. The fixed encoder 6 is arranged relative to the encoder 7 under test, and a standardized test process and method can be established to ensure that each test is carried out according to the same standard, which is conducive to improving the consistency and comparability of the test results. The utility model has a reasonable design and is easy to operate. It can provide an accurate, stable and reliable test environment, which is of great significance for testing and quality control of encoders in large-scale production.

[0027] The base 1 is provided with a fixed connection part 11, and the fixed end of the motor 2 is arranged on the fixed connection part 11; the base 1 is provided with a support rod 12 on the outside of the fixed connection part 11, and the bracket 3 is arranged at the top of the support rod 12. In this embodiment, the arrangement of the support rod 12 and the fixed connection part 11 makes the support structure of the entire test fixture more stable, can effectively bear the weight of the test component, and maintain the stability of the entire system. The arrangement of the support rod 12 can play a certain role in shock absorption and vibration elimination, reduce the impact of external vibration on the test results during the test process, and improve the accuracy and reliability of the test. By arranging the fixed end of the motor 2 on the fixed connection part 11 and the arrangement of the support rod 12, the space can be effectively utilized, making the structure of the entire test fixture more compact and efficient.

[0028] The driving end of the motor 2 is provided with a turntable 21, and the lower fixture seat 5 is provided on the turntable 21. The motor 2 is used to drive the turntable 21 to rotate, so as to drive the lower fixture seat 5 to rotate. Specifically, a mounting platform 211 is provided at the axis of the turntable 21, and a rotating shaft 212 is provided on the mounting platform 211, and one end of the rotating shaft 212 passes through and is rotatably connected to the upper fixture seat 4. In this embodiment, through the design of the turntable 21 and the rotating shaft 212, the accurate rotation and positioning of the lower fixture seat 5 relative to the upper fixture seat 4 can be achieved, which is conducive to accurate encoder testing operation. The setting of the turntable 21 and the rotating shaft 212 enables the lower fixture seat 5 to be flexibly rotated in the horizontal direction, thereby realizing the testing of multiple angles of the encoder 7 under test, and improving the comprehensiveness and applicability of the test. Through the rotation transmission design of the turntable 21 and the rotating shaft 212, the stability of the lower fixture seat 5 during the test can be maintained, ensuring the accuracy and reliability of the test data.

[0029] The upper fixture seat 4 includes a fixed flange 41, a bearing 42 and a connecting column 43, wherein the fixed flange 41 is arranged on the bracket 3, the bearing 42 is arranged on the fixed flange 41, and the connecting column 43 is arranged on the side of the fixed flange 41 facing the lower fixture seat 5, and the connecting column 43 is used to install the fixed encoder 6. Specifically, one end of the rotating shaft 212 passes through and is rotatably connected to the bearing 42. In this embodiment, the setting of the fixed flange 41, the bearing 42 and the connecting column 43 provides a stable support structure, which is conducive to ensuring that the installation position of the fixed encoder 6 is stable and reliable, and reducing the impact of vibration or instability on the test results. Through the design of the bearing 42 and the connecting column 43, the precise positioning and installation of the fixed encoder 6 can be achieved, which is conducive to ensuring the stability and accuracy of the fixed encoder 6 during the test process. The rotating shaft 212 passes through and is connected to the bearing 42, which can reduce the friction resistance during rotation, and is conducive to improving the flexibility and stability of the rotation of the upper fixture seat 4.

[0030] The lower fixture seat 5 is arranged on the periphery of the mounting platform 211, and the lower fixture seat 5 is provided with a mounting portion 51, and the mounting portion 51 is used to mount the encoder 7 under test. In this embodiment, the mounting platform 211 serves as a supporting base, so that the lower fixture seat 5 can be firmly mounted on its periphery, thereby ensuring the stability and reliability of the encoder 7 under test during the test process. The tester can easily install and adjust the encoder 7 under test, which is conducive to improving the convenience and efficiency of the test operation.

[0031] See also Figure 5 As shown, in one embodiment, both the fixed encoder 6 and the encoder under test 7 are absolute encoders. In this embodiment, the absolute encoder can provide accurate position information, so high-precision rotation position data can be obtained during the test, which helps to ensure the accuracy of the test results. Since the absolute encoders do not need to be returned to zero or reinitialized, they can provide a unique code at any position, so they have higher reliability, which is conducive to ensuring the accuracy and stability of data during the test. The absolute encoder can provide current position information instantly, which is conducive to real-time monitoring and control of the position of the object under test, and is suitable for test scenarios that require rapid response and real-time control.

[0032] See also Figure 6 As shown, in another embodiment, both the fixed encoder 6 and the encoder under test 7 are grating encoders. In this embodiment, the grating encoder is well known for its high resolution and accurate position detection capabilities, so it can provide very accurate rotation position measurement data, which helps to ensure high accuracy and reliability of the test results. The grating encoder can measure the position at a very high speed, which is conducive to providing accurate position data under the condition of rapid rotation or high-speed movement.

[0033] There is a gap between the fixed encoder 6 and the encoder under test 7. In this embodiment, the existence of the gap facilitates the encoder under test 7 to rotate without interference, thereby ensuring the accuracy and stability of the test process.

[0034] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An encoder test fixture, characterized in that: The utility model comprises a base, a motor, a bracket, an upper jig seat and a lower jig seat, wherein the motor is arranged on the base, the bracket is located above the motor, the upper jig seat is arranged on the bracket, the lower jig seat is arranged on the motor, the upper jig seat is provided with a fixed encoder, the lower jig seat is provided with a measured encoder, and the fixed encoder is arranged opposite to the measured encoder; the motor is used for driving the lower jig seat to drive the measured encoder to rotate so as to test the measured encoder.

2. The encoder test fixture according to claim 1, characterized in that: The base is provided with a fixed connection part, and the fixed end of the motor is arranged on the fixed connection part; the base is provided with a support rod on the outer side of the fixed connection part, and the bracket is arranged on the top end of the support rod.

3. The encoder test fixture according to claim 1, characterized in that: A turntable is disposed at the driving end of the motor, and the lower fixture seat is disposed on the turntable. The motor is used to drive the turntable to rotate, thereby driving the lower fixture seat to rotate.

4. The encoder test fixture according to claim 3, characterized in that: A mounting platform is arranged at the axis center of the turntable, a rotating shaft is arranged on the mounting platform, and one end of the rotating shaft passes through and is rotatably connected to the upper fixture seat.

5. The encoder test fixture according to claim 4, characterized in that: The upper fixture seat includes a fixed flange, a bearing and a connecting column. The fixed flange is arranged on the bracket, the bearing is arranged on the fixed flange, the connecting column is arranged on the side of the fixed flange facing the lower fixture seat, and the connecting column is used to install a fixed encoder.

6. The encoder test fixture according to claim 5, characterized in that: One end of the rotating shaft passes through and is rotatably connected to the bearing.

7. The encoder test fixture according to claim 1, characterized in that: The lower fixture seat is arranged on the outer periphery of the mounting platform, and the lower fixture seat is provided with a mounting portion, and the mounting portion is used to mount the encoder to be measured.

8. The encoder test fixture according to claim 1, characterized in that: The fixed encoder and the encoder under test are both absolute value encoders.

9. The encoder test fixture according to claim 1, characterized in that: The fixed encoder and the encoder under test are both grating encoders.

10. The encoder test fixture according to claim 1, characterized in that: A gap is left between the fixed encoder and the encoder to be measured.

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