Device for quickly detecting precision of encoder

Abstract

The utility model provides a device for rapidly testing the precision of an encoder, which comprises a base, a high-precision encoder, an upper substrate, a bearing, an angle adjusting turntable, a support, an elastic coupling, an adapter plate, an encoder to be tested, a main shaft and a digital display module, the upper substrate is horizontally fixed above the base, the high-precision encoder is arranged in the base, and the upper end of the high-precision encoder is fixed in the middle of the upper substrate; the upper end of the upper substrate is provided with a circular groove, the bearing is fixed in the circular groove, the lower end of the angle adjusting turntable is rotatably installed in the bearing, the support is fixed above the upper substrate, the lower end of the main shaft is rotatably installed on the high-precision encoder, the middle of the angle adjusting turntable is fixed on the main shaft, and the adapter plate is fixed on the support. A to-be-tested encoder is fixed on the adapter plate, and the upper and lower ends of the elastic coupling are respectively fixed on the rotating shaft of the to-be-tested encoder and the upper end of the main shaft. The design has the advantages that the precision of the encoder can be quickly detected, the detection environment does not need to be disassembled and assembled, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of encoders, in particular to a device for quickly testing the accuracy of encoders. Background Art

[0002] An encoder is a device that converts angle or displacement information into electrical signals for transmission and communication. Encoders are mainly divided into absolute rotary encoders and incremental rotary encoders. The accuracy of the encoder will determine the positioning accuracy of the equipment it is used in. To obtain the accuracy index, the encoder needs to be precision tested. Existing encoder precision testing equipment mostly uses an autocollimator combined with a polyhedron tester. The accuracy test of each encoder requires the reassembly of the testing environment. The testing process is time-consuming and inefficient. Therefore, it is necessary to create a device for quickly testing encoder accuracy to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a device for quickly testing the accuracy of an encoder to solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0005] A device for quickly checking the accuracy of an encoder comprises a base, a high-precision encoder, an upper base plate, a bearing, an angle adjustment turntable, a bracket, an elastic coupling, an adapter plate, an encoder to be tested, a spindle and a digital display module. The upper base plate is horizontally fixed above the base, the high-precision encoder is arranged in the base and the upper end is fixed to the middle of the upper base plate, the upper end of the upper base plate is provided with a circular groove, the bearing is fixed in the circular groove, the lower end of the angle adjustment turntable is rotatably mounted in the bearing, the bracket is fixed above the upper base plate, the lower end of the spindle is rotatably mounted on the high-precision encoder, the middle part of the angle adjustment turntable is fixed on the spindle, the adapter plate is fixed on the bracket, the encoder to be tested is fixed on the adapter plate, the upper and lower ends of the elastic coupling are respectively fixed to the rotating shaft of the encoder to be tested and the upper end of the spindle, and the digital display module is electrically connected to the high-precision encoder and the encoder to be tested.

[0006] Further description of the utility model: It also includes a turntable clamping nut, the main shaft is provided with a limiting boss protruding outward, the lower end face of the angle adjustment turntable is in conflict with the upper end face of the limiting boss, the turntable clamping nut is sleeved on the main shaft and threadedly connected to the main shaft, and the lower end face of the turntable clamping nut is in conflict with the upper end face of the angle adjustment turntable.

[0007] Further description of the utility model: It also includes a fine-tuning mechanism, which is fixed on the upper base plate. The power output end of the fine-tuning mechanism is connected to the angle adjustment turntable for fine-tuning the angle of the angle adjustment turntable.

[0008] Further description of the utility model: The digital display module includes a communication interface, a power supply interface, a first digital display and a second digital display. The communication interface, the power supply interface and the first digital display are all fixed on the base, the second digital display is fixed on the bracket, the first digital display is electrically connected to the high-precision encoder, and the second digital display is electrically connected to the encoder to be tested.

[0009] The beneficial effects of the present utility model are as follows: during testing, the device is powered on, the angle display on the digital display module is observed, the angle adjustment dial is turned, and the encoder to be tested is rotated to an angle of 0°. At this time, the upper computer is used to issue a zeroing instruction so that the angle data of the high-precision encoder is also 0°, so that the two encoders have the same starting position. At this time, the digital display module is observed, and the angle adjustment dial is turned until the displayed angle is 30°, that is, the angle value of the high-precision encoder, and the angle value of the encoder to be tested is recorded at the same time. At this time, the difference between the angle values ​​of the high-precision encoder and the encoder to be tested is the accuracy error value of the encoder to be tested at the current position. Similarly, twelve position angle data are recorded after one rotation, and each position is separated by 30°. The angle error value obtained by statistics is the accuracy error value of the encoder to be tested. The advantage of this design is that the accuracy of the encoder can be quickly detected without disassembling the detection environment, which greatly improves the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is the overall structural diagram of the utility model;

[0011] Figure 2 It is a right side sectional view of the present utility model;

[0012] Description of reference numerals:

[0013] 1. Base; 2. High-precision encoder; 3. Upper base plate; 4. Bearing; 5. Angle adjustment turntable; 6. Turntable clamping nut; 7. Bracket; 8. Elastic coupling; 9. Adapter plate; 10. Encoder to be tested; 11. Spindle; 12. Fine-tuning mechanism; 13. Communication interface; 14. Power interface; 15. First digital display; 16. Second digital display. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to the accompanying drawings:

[0015] like Figures 1 to 2As shown, a device for quickly checking the accuracy of an encoder includes a base 1, a high-precision encoder 2, an upper base plate 3, a bearing 4, an angle adjustment turntable 5, a bracket 7, an elastic coupling 8, an adapter plate 9, an encoder to be tested 10, a spindle 11 and a digital display module. The upper base plate 3 is horizontally fixed above the base 1, the high-precision encoder 2 is arranged in the base 1 and the upper end is fixed to the middle of the upper base plate 3, the upper end of the upper base plate 3 is provided with a circular groove, the bearing 4 is fixed in the circular groove, the lower end of the angle adjustment turntable is rotatably mounted in the bearing 4, the bracket 7 is fixed above the upper base plate 3, the lower end of the spindle 11 is rotatably mounted on the high-precision encoder 2, the middle part of the angle adjustment turntable is fixed on the spindle 11, the adapter plate 9 is fixed on the bracket 7, the encoder to be tested 10 is fixed on the adapter plate 9, the upper and lower ends of the elastic coupling 8 are respectively fixed to the rotating axis of the encoder to be tested 10 and the upper end of the spindle 11, and the digital display module is electrically connected to the high-precision encoder 2 and the encoder to be tested 10.

[0016] During testing, power on the device, observe the angle displayed on the digital display module, turn the angle adjustment dial, and rotate the encoder 10 to be tested to an angle of 0°. At this time, use the host computer to send a zero command so that the angle data of the high-precision encoder 2 is also 0°, so that the two encoders have the same starting position. At this time, observe the digital display module, turn the angle adjustment dial to display an angle of 30°, which is the angle value of the high-precision encoder 2, and record the angle value of the encoder 10 to be tested. At this time, the difference between the angle values ​​of the high-precision encoder 2 and the encoder 10 to be tested is the accuracy error value of the encoder 10 to be tested at the current position. Similarly, record the angle data of twelve positions after one rotation, with each position interval of 30°. The angle error value obtained by statistics is the accuracy error value of the encoder 10 to be tested. The advantage of this design is that it can quickly detect the accuracy of the encoder without disassembling the detection environment, which greatly improves the detection efficiency.

[0017] In this design, it also includes a turntable clamping nut 6. The main shaft 11 is provided with a limiting boss protruding outward. The lower end face of the angle adjustment turntable is in conflict with the upper end face of the limiting boss. The turntable clamping nut 6 is sleeved on the main shaft 11 and is threadedly connected to the main shaft 11. The lower end face of the turntable clamping nut 6 is in conflict with the upper end face of the angle adjustment turntable.

[0018] After the main shaft 11 passes through the middle of the angle adjustment dial 5 , the angle adjustment dial 5 can be quickly fixed on the main shaft 11 by rotating the compression nut.

[0019] In this design, a fine-tuning mechanism 12 is also included. The fine-tuning mechanism 12 is fixed on the upper base plate 3 . The power output end of the fine-tuning mechanism 12 is connected to the angle adjustment turntable 5 for fine-tuning the angle of the angle adjustment turntable 5 .

[0020] The fine-tuning mechanism 12 is fixed on the upper base plate 3 and is used to twist the angle adjustment dial to rotate at a small angle.

[0021] The digital display module includes a communication interface 13, a power interface 14, a first digital display 15 and a second digital display 16. The communication interface 13, the power interface 14 and the first digital display 15 are all fixed on the base 1, and the second digital display 16 is fixed on the bracket 7. The first digital display 15 is electrically connected to the high-precision encoder 2, and the second digital display 16 is electrically connected to the encoder to be tested 10.

[0022] The power interface 14 on the base 1 is used to power the device, the communication interface 13 is used for the high-precision encoder 2 to communicate with the host computer, the first digital display 15 is used to display the angle data of the high-precision encoder 2, and the second digital display 16 is used to display the angle data of the encoder 10 to be tested.

[0023] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A device for quickly checking encoder accuracy, characterized by: It includes a base, a high-precision encoder, an upper baseboard, a bearing, an angle adjustment turntable, a bracket, an elastic coupling, an adapter plate, an encoder to be tested, a spindle and a digital display module. The upper baseboard is horizontally fixed above the base, the high-precision encoder is arranged in the base and the upper end is fixed to the middle of the upper baseboard. The upper end of the upper baseboard is provided with a circular groove, the bearing is fixed in the circular groove, the lower end of the angle adjustment turntable is rotatably installed in the bearing, the bracket is fixed above the upper baseboard, the lower end of the spindle is rotatably installed on the high-precision encoder, the middle part of the angle adjustment turntable is fixed on the spindle, the adapter plate is fixed on the bracket, the encoder to be tested is fixed on the adapter plate, the upper and lower ends of the elastic coupling are respectively fixed to the rotating shaft of the encoder to be tested and the upper end of the spindle, and the digital display module is electrically connected to the high-precision encoder and the encoder to be tested.

2. The device for quickly checking encoder accuracy according to claim 1, characterized in that: It also includes a turntable clamping nut, the main shaft is provided with a limiting boss protruding outward, the lower end surface of the angle adjustment turntable is in conflict with the upper end surface of the limiting boss, the turntable clamping nut is sleeved on the main shaft and threadedly connected to the main shaft, and the lower end surface of the turntable clamping nut is in conflict with the upper end surface of the angle adjustment turntable.

3. The device for quickly checking encoder accuracy according to claim 1, characterized in that: It also includes a fine-tuning mechanism, which is fixed on the upper base plate. The power output end of the fine-tuning mechanism is connected to the angle adjustment turntable for fine-tuning the angle of the angle adjustment turntable.

4. The device for quickly checking encoder accuracy according to claim 1, characterized in that: The digital display module includes a communication interface, a power supply interface, a first digital display and a second digital display. The communication interface, the power supply interface and the first digital display are all fixed on the base, the second digital display is fixed on the bracket, the first digital display is electrically connected to the high-precision encoder, and the second digital display is electrically connected to the encoder to be tested.

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