Etching error compensation device for photoelectric encoder

Abstract

The utility model relates to the technical field of error compensation devices, and discloses an etching error compensation device for a photoelectric encoder. Comprising a supporting bottom plate, an operation box is fixedly connected to the upper end of the supporting bottom plate, a photoelectric encoder which completes limiting and fixing is detected through a laser interferometer, so that the height needing etching error compensation is judged, a signal is transmitted to a receiver on the front face of a reverse rotation motor, and the reverse rotation motor is started through the receiver; the reverse motor drives a rotating shaft at the output end of the reverse motor to rotate, so that the reverse motor continuously drives a rotating rod on the front side to rotate, and when the reverse motor rotates forwards, the reverse motor drives sliding bolts on a rotating screw on the front side of the rotating rod to get close to each other, so that the lifting main legs on the sliding bolts are lifted; and finally, the connecting block completes the lifting of the sliding plate, so that the height adjustment of the photoelectric encoder is completed, and the etching compensation efficiency of the photoelectric encoder can be effectively improved through the automatic setting.

Description

Technical Field

[0001] The utility model relates to the technical field of error compensation devices, in particular to an etching error compensation device for a photoelectric encoder. Background Art

[0002] A photoelectric encoder is a sensor that converts mechanical geometric displacement on an output shaft into pulses or digital quantities through photoelectric conversion. This is the most widely used sensor. A photoelectric encoder consists of a light source, an optical code disk, and a photosensitive element. The grating disk is a circular plate of a certain diameter with several equally spaced rectangular holes.

[0003] Since the etching of photoelectric encoders is a process that requires very precise control, any deviation in process parameters may lead to inconsistent grating patterns on the encoder scale (or encoding disk), thereby affecting the accuracy of the encoder. Therefore, for photoelectric encoders with etching errors, etching error compensation is required again. For this purpose, we propose a photoelectric encoder etching error compensation device. Utility Model Content

[0004] The purpose of the present utility model is to provide a photoelectric encoder etching error compensation device to solve the problem raised in the above background technology that since the etching of the photoelectric encoder is a process that requires very precise control, any deviation in the process parameters may cause the grating pattern on the encoder scale (or encoding disk) to be inconsistent, thereby affecting the accuracy of the encoder. Therefore, for the photoelectric encoder with etching errors, etching error compensation needs to be performed again.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a photoelectric encoder etching error compensation device, comprising a supporting base plate, the upper end of the supporting base plate is fixedly connected to an operating box, the inner wall of the operating box is rotatably connected to a rotating screw, the rotating screw rotates through the operating box, the front of the operating box is fixedly connected to a fixed plate, the upper end of the fixed plate is fixedly connected to a reversing motor, the output end of the reversing motor is rotatably connected to a rotating shaft, the end of the rotating shaft away from the reversing motor is fixedly connected to a rotating rod, and the surface of the rotating screw is slidably connected to a sliding bolt.

[0006] As a further preferred embodiment of the present technical solution, the upper end of the sliding bolt is fixedly connected to a limiting plate, the number of the limiting plates is set to two, and the two limiting plates are symmetrically arranged about the center of the sliding bolt. The upper end of the sliding bolt is fixedly connected to a lifting main leg, and the end of the lifting main leg away from the sliding bolt is fixedly connected to a lifting plate.

[0007] As a further preferred embodiment of the present technical solution, the lifting plate passes through the operating box, the number of the rotating screws is set to two, the two rotating screws are symmetrically arranged about the center of the operating box, and a transmission belt is provided on the surface of the rotating screw.

[0008] As a further preferred embodiment of the present technical solution, the upper end of the lifting plate is fixedly connected to a connecting block, the end of the connecting block away from the lifting plate is fixedly connected to a compensation box, and the upper end of the lifting plate is fixedly connected to a fixed block, which is located below the compensation box.

[0009] As a further preferred embodiment of the present technical solution, a sliding plate is slidably connected to the bottom end of the inner wall of the compensation box, the lower end of the sliding plate is fixedly connected to the upper end of the connecting block, and the end of the sliding plate away from the connecting block is fixedly connected to a photoelectric encoder, which is located inside the compensation box.

[0010] As a further preferred embodiment of the present technical solution, an electric telescopic rod is fixedly connected to the inner wall of the compensation box, a clamping ring is fixedly connected to the end of the electric telescopic rod away from the compensation box, an adjusting bolt is connected to the inner wall of the clamping ring, and the number of the electric telescopic rods is set to two, and the two electric telescopic rods are symmetrically arranged about the center of the compensation box.

[0011] As a further preferred embodiment of the present technical solution, a laser interferometer is fixedly connected to the upper end of the compensation box, a receiver is fixedly connected to the front side of the reversing motor, and the laser interferometer and the receiver are electrically connected.

[0012] The utility model provides a photoelectric encoder etching error compensation device, which has the following beneficial effects:

[0013] (1) The utility model detects the photoelectric encoder that has been fixed by the limiter through the laser interferometer on the front of the compensation box, so as to determine the etching error compensation height that the photoelectric encoder needs to perform. After the detection is completed, it will transmit the signal to the receiver on the front of the reversing motor, thereby starting the reversing motor through the receiver. The reversing motor will drive the rotating shaft at its output end to rotate. Due to the rotation of the rotating shaft, it will continue to drive the rotating rod on the front to rotate. When the reversing motor rotates in the forward direction, it will drive the sliding bolts on the rotating screw on the front of the rotating rod to approach each other, thereby completing the lifting of the lifting main leg on the sliding bolt. Finally, the connecting block will complete the lifting of the sliding plate, thereby completing the adjustment of the height of the photoelectric encoder. Such an automated setting can effectively improve the efficiency of the etching compensation of the photoelectric encoder.

[0014] (2) The utility model starts the electric telescopic rod, so that the clamping ring on the front of the electric telescopic rod can complete the work of limiting and fixing the photoelectric encoder. At the same time, since an adjustment bolt is rotatably connected to the inner wall of the clamping ring, when the size of the photoelectric encoder is inconsistent with the clamping ring, it is only necessary to rotate the adjustment bolt to adjust the clamping ring. This arrangement can effectively improve the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the operating box of the utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the overall structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the compensation box of the utility model;

[0019] Figure 5 For this utility model Figure 4 Enlarged schematic diagram of the structure of part A in the middle.

[0020] In the figure: 1. Support base plate; 2. Fixed plate; 3. Receiver; 4. Reversing motor; 5. Transmission belt; 6. Rotating screw; 7. Sliding bolt; 8. Operating box; 9. Rotating shaft; 10. Rotating rod; 11. Lifting plate; 12. Limiting plate; 13. Lifting main leg; 14. Connecting block; 15. Adjusting bolt; 16. Fixed block; 17. Compensating box; 18. Photoelectric encoder; 19. Electric telescopic rod; 20. Laser interferometer; 21. Retaining ring; 22. Sliding plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0022] The utility model provides a technical solution: Figures 1 to 5 As shown, in this embodiment, a photoelectric encoder etching error compensation device includes a supporting base plate 1, the upper end of the supporting base plate 1 is fixedly connected to an operating box 8, the inner wall of the operating box 8 is rotatably connected to a rotating screw 6, the rotating screw 6 rotates through the operating box 8, the front of the operating box 8 is fixedly connected to a fixed plate 2, the upper end of the fixed plate 2 is fixedly connected to a reversing motor 4, the output end of the reversing motor 4 is rotatably connected to a rotating shaft 9, the end of the rotating shaft 9 away from the reversing motor 4 is fixedly connected to a rotating rod 10, and the surface of the rotating screw 6 is slidably connected to a sliding bolt 7.

[0023] The upper end of the sliding bolt 7 is fixedly connected to a limiting plate 12, and the number of the limiting plates 12 is set to two. The two limiting plates 12 are symmetrically arranged about the center of the sliding bolt 7. The upper end of the sliding bolt 7 is fixedly connected to a lifting main leg 13, and the end of the lifting main leg 13 away from the sliding bolt 7 is fixedly connected to a lifting plate 11.

[0024] The lifting plate 11 passes through the operating box 8 , and the number of the rotating screws 6 is set to two. The two rotating screws 6 are symmetrically arranged about the center of the operating box 8 , and the surface of the rotating screws 6 is covered with a transmission belt 5 .

[0025] The upper end of the lifting plate 11 is fixedly connected to a connecting block 14 , and the end of the connecting block 14 away from the lifting plate 11 is fixedly connected to a compensation box 17 . The upper end of the lifting plate 11 is fixedly connected to a fixing block 16 , which is located below the compensation box 17 .

[0026] The bottom end of the inner wall of the compensation box 17 is slidably connected with a sliding plate 22, and the lower end of the sliding plate 22 is fixedly connected to the upper end of the connecting block 14. The end of the sliding plate 22 away from the connecting block 14 is fixedly connected with a photoelectric encoder 18. The photoelectric encoder 18 is located inside the compensation box 17. By starting the reversing motor 4, the reversing motor 4 will drive the rotating shaft 9 at its output end to rotate. In this way, due to the rotation of the rotating shaft 9, it will continue to drive the rotating rod 10 on the front to rotate. In this way, when the reversing motor 4 rotates forward, it will drive the sliding screw 6 on the front of the rotating rod 10. The bolts 7 approach each other, thereby completing the lifting of the lifting main leg 13 on the sliding bolt 7, thereby lifting the lifting plate 11 on the upper end of the photoelectric encoder 18 synchronously, and finally, due to the lifting of the height of the lifting plate 11, it will continue to drive the upper connecting block 14 to lift the sliding plate 22, and finally complete the adjustment of the height of the photoelectric encoder 18. When the reversing motor 4 rotates in the opposite direction, it will make the sliding bolts 7 on the rotating screw 6 move away from each other, thereby completing the reduction of the height of the photoelectric encoder 18, thereby completing the etching error compensation work of the photoelectric encoder 18.

[0027] The inner wall of the compensation box 17 is fixedly connected to an electric telescopic rod 19, and the end of the electric telescopic rod 19 away from the compensation box 17 is fixedly connected to a clamping ring 21. The inner wall of the clamping ring 21 is rotatably connected to the adjusting bolt 15. The number of the electric telescopic rods 19 is set to two, and the two electric telescopic rods 19 are symmetrically arranged about the center of the compensation box 17. By starting the electric telescopic rod 19, the clamping ring 21 on the front of the electric telescopic rod 19 can complete the limiting and fixing work of the photoelectric encoder 18. At the same time, since the adjusting bolt 15 is rotatably connected to the inner wall of the clamping ring 21, when the size of the photoelectric encoder 18 is inconsistent with the clamping ring 21, it is only necessary to rotate the adjusting bolt 15 to adjust the clamping ring 21. Such an arrangement can effectively improve the applicability of the device.

[0028] The upper end of the compensation box 17 is fixedly connected to a laser interferometer 20. The laser interferometer 20 is an existing structure and is an API laser interferometer. The laser in the laser interferometer 20 emits a single frequency beam. After the beam enters the linear interferometer, it is divided into two beams, one as a reference beam and the other as a measurement beam. When the two beams have the same frequency, the same vibration direction and a constant phase difference, they will interfere. If the optical path difference does not change, the laser interferometer will find a stable signal between the two poles of constructive and destructive interference; if the optical path difference changes, these changes will be calculated and used to measure the difference between the two optical paths. The difference changes, and a receiver 3 is fixedly connected to the front of the reversing motor 4, so that the etching error of the photoelectric encoder 18 can be recorded and the result can be finally fed back to the receiver 3. The laser interferometer 20 is electrically connected to the receiver 3. Since the laser interferometer 20 on the front of the compensation box 17 will detect the photoelectric encoder 18 that has been fixed with a limit, it can determine the etching error compensation height that the photoelectric encoder 18 needs to perform. After completing the detection, it will transmit the signal to the receiver 3 on the front of the reversing motor 4, thereby starting the reversing motor 4 through the receiver 3, thereby performing the etching compensation work of the photoelectric encoder 18.

[0029] The utility model provides a photoelectric encoder etching error compensation device, the specific working principle is as follows:

[0030] During use, the user needs to place the photoelectric encoder 18 that needs to be etched to compensate for the error on the sliding plate 22 inside the compensation box 17, and then start the electric telescopic rod 19, so that the clamping ring 21 on the front of the electric telescopic rod 19 can complete the limit and fixation of the photoelectric encoder 18. At the same time, since the inner wall of the clamping ring 21 is rotatably connected with the adjusting bolt 15, when the size of the photoelectric encoder 18 is inconsistent with the clamping ring 21, it is only necessary to rotate the adjusting bolt 15 to adjust the clamping ring 21. This setting can effectively improve the applicability of the device. Then the laser interferometer 20 on the front of the compensation box 17 will detect the photoelectric encoder 18 that has been limited and fixed, so as to determine the etching error compensation height that the photoelectric encoder 18 needs to perform. After the detection is completed, it will transmit the signal to the receiver 3 on the front of the reversing motor 4, so that the receiver The reversing motor 4 is started, and the reversing motor 4 drives the rotating shaft 9 at its output end to rotate. As a result of the rotation of the rotating shaft 9, it will continue to drive the rotating rod 10 on the front side to rotate. When the reversing motor 4 rotates in the forward direction, it will drive the sliding bolts 7 on the rotating screw 6 on the front side of the rotating rod 10 to approach each other, thereby completing the lifting of the lifting main legs 13 on the sliding bolts 7, thereby synchronously lifting the lifting plate 11 on the upper end of the photoelectric encoder 18. Finally, due to the lifting of the height of the lifting plate 11, it will continue to drive the upper connecting block 14 to lift the sliding plate 22, and finally complete the adjustment of the height of the photoelectric encoder 18. When the reversing motor 4 rotates in the reverse direction, it will cause the sliding bolts 7 on the rotating screw 6 to move away from each other, thereby completing the reduction of the height of the photoelectric encoder 18, thereby completing the etching error compensation work of the photoelectric encoder 18.

[0031] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A photoelectric encoder etching error compensation device, comprising a supporting base plate (1), characterized in that: The upper end of the support base plate (1) is fixedly connected to an operating box (8), the inner wall of the operating box (8) is rotatably connected to a rotating screw (6), the rotating screw (6) rotates and penetrates the operating box (8), the front of the operating box (8) is fixedly connected to a fixed plate (2), the upper end of the fixed plate (2) is fixedly connected to a reversing motor (4), the output end of the reversing motor (4) is rotatably connected to a rotating shaft (9), the end of the rotating shaft (9) away from the reversing motor (4) is fixedly connected to a rotating rod (10), and the surface of the rotating screw (6) is slidably connected to a sliding bolt (7).

2. The photoelectric encoder etching error compensation device according to claim 1, characterized in that: The upper end of the sliding bolt (7) is fixedly connected to a limiting plate (12), the number of the limiting plates (12) is set to two, and the two limiting plates (12) are symmetrically arranged about the center of the sliding bolt (7). The upper end of the sliding bolt (7) is fixedly connected to a lifting main leg (13), and the end of the lifting main leg (13) away from the sliding bolt (7) is fixedly connected to a lifting plate (11).

3. The photoelectric encoder etching error compensation device according to claim 2, characterized in that: The lifting plate (11) passes through the operating box (8), the number of the rotating screw rods (6) is set to two, the two rotating screw rods (6) are arranged symmetrically about the center of the operating box (8), and the surface of the rotating screw rod (6) is provided with a transmission belt (5).

4. The photoelectric encoder etching error compensation device according to claim 3, characterized in that: The upper end of the lifting plate (11) is fixedly connected to a connecting block (14), one end of the connecting block (14) away from the lifting plate (11) is fixedly connected to a compensation box (17), and the upper end of the lifting plate (11) is fixedly connected to a fixing block (16), and the fixing block (16) is located below the compensation box (17).

5. The photoelectric encoder etching error compensation device according to claim 4, characterized in that: The bottom end of the inner wall of the compensation box (17) is slidably connected to a sliding plate (22), the lower end of the sliding plate (22) is fixedly connected to the upper end of the connecting block (14), and the end of the sliding plate (22) away from the connecting block (14) is fixedly connected to a photoelectric encoder (18), and the photoelectric encoder (18) is located inside the compensation box (17).

6. The photoelectric encoder etching error compensation device according to claim 5, characterized in that: An electric telescopic rod (19) is fixedly connected to the inner wall of the compensation box (17), and a clamping ring (21) is fixedly connected to one end of the electric telescopic rod (19) away from the compensation box (17). An adjusting bolt (15) is rotatably connected to the inner wall of the clamping ring (21). The number of the electric telescopic rods (19) is set to two, and the two electric telescopic rods (19) are symmetrically arranged about the center of the compensation box (17).

7. The photoelectric encoder etching error compensation device according to claim 6, characterized in that: The upper end of the compensation box (17) is fixedly connected to a laser interferometer (20), the front of the reversing motor (4) is fixedly connected to a receiver (3), and the laser interferometer (20) and the receiver (3) are electrically connected.

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