An encoder fast precision detection device

Abstract

A rapid precision detection device for an encoder according to the present invention belongs to the field of equipment detection, and includes a fine adjustment mechanism, a fine adjustment rod, a supporting connecting shaft, a supporting connecting plate, a collimator, a bottom plate, a 23-sided prism, a dial, a detection bracket, a collimator base, a bushing, an external thread locking ring, an internal thread locking ring, a main shaft, a lower centripetal bearing, a bearing bracket, an upper centripetal bearing, a support frame, a locking nut, a fine adjustment screw, a fine adjustment spring, a clamping end, and a connecting aluminum sheet; through the above design scheme, the present invention can bring the following beneficial effects: by providing a device that can quickly measure the encoder through this design, after measuring the first encoder to be measured, the prism installation and debugging steps are no longer carried out in the subsequent detection process, greatly reducing the workload. The prism rotates together with the encoder to be measured through the main shaft dial, and the collimator is used in combination with the prism to measure the rotation angle. The operation is simple and the precision is higher, which is suitable for various types of encoders.

Description

Technical Field

[0001] The present invention belongs to the field of equipment detection, and particularly relates to an encoder precision detection device. Background Art

[0002] The precision of an encoder directly affects the use effect of a product. Especially, high-precision encoders are usually applied to high-end precision instruments, which have strict requirements for the encoder's own precision. This requires ensuring the encoder's own precision when leaving the factory. When using a 23-faceted prism and a collimator for encoder precision detection, the detection is usually too cumbersome. The detection of a high-precision encoder from installation to the end even takes about 1 hour. The present invention greatly simplifies the detection and installation debugging without affecting the detection result. The debugging is carried out before detecting the precision, so that the debugging device is not repeatedly operated during the detection process.

[0003] Most of the existing encoder precision detection devices on the market can only detect encoders of specific styles and specific resolutions, which affects the actual production efficiency.

[0004] Therefore, there is an urgent need for a new technical solution in the prior art to solve this problem. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a high-efficiency encoder detection device that can quickly detect an encoder.

[0006] A rapid encoder precision detection device, characterized in that it includes a fine-tuning mechanism, a supporting connecting plate, a collimator, a bottom plate, a 23-faceted prism, a dial and a detection bracket;

[0007] The fine-tuning mechanism and the detection bracket are respectively arranged on the bottom plate;

[0008] A main shaft is arranged in the detection bracket through a bushing. A support frame is also arranged on the bushing. The bushing is fixedly connected to the support frame, and a supporting connecting plate is arranged on the support frame;

[0009] A 23-faceted prism, a dial and a locking nut are sequentially arranged on the main shaft. A supporting connecting shaft for installing an encoder is also arranged at the end of the main shaft. The supporting connecting shaft and the supporting connecting plate are in mutual cooperation in position;

[0010] The fine-tuning mechanism includes a fine-tuning screw, a fine-tuning spring and a fine-tuning rod;

[0011] One end of the fine-tuning rod is respectively connected to the fine-tuning screw and the fine-tuning spring. A clamping end matching the shape of the main shaft is arranged at the other end. The clamping end is sleeved on the main shaft, and the clamping end meshes with the main shaft;

[0012] The main shaft is connected to the bushing through a lower centripetal bearing and an upper centripetal bearing, and a bearing bracket is arranged between the lower centripetal bearing and the upper centripetal bearing;

[0013] The position of the collimator cooperates with the 23-plane prism.

[0014] The collimator is arranged on the bottom plate through a collimator base.

[0015] The collimator is installed on the collimator base.

[0016] The mating connecting plate is provided with a rabbet that cooperates with the support frame and the encoder to be measured.

[0017] The support frame is provided with a rabbet that cooperates with the bushing.

[0018] The upper surface of the lock nut is provided with a groove.

[0019] The fine-tuning rod includes rod I and rod II connected in sequence. Among them, rod I and rod II are connected by a connecting aluminum sheet, and the clamping end is locked with a thread.

[0020] The bushing and the main shaft are provided with rabbets that cooperate with each other in position; the lower centripetal bearing and the upper centripetal bearing are adapted to the rabbets.

[0021] An externally threaded locking ring is sleeved on the lower end of the main shaft, and the external thread of the main shaft meshes with the internal thread teeth on the inner wall of the externally threaded locking ring; an internally threaded locking ring is further sleeved outside the externally threaded locking ring. The outer wall of the internally threaded locking ring is provided with an external thread, and the inner wall of the bushing is provided with an internal thread that meshes with the external thread of the internally threaded locking ring; both the externally threaded locking ring and the internally threaded locking ring are in contact with the lower centripetal bearing.

[0022] The bearing bracket is in contact with both the lower centripetal bearing and the upper centripetal bearing.

[0023] Through the above design scheme, the present invention can bring the following beneficial effects: By this design, a device for quickly measuring an encoder is provided. Before detection, the installation and debugging of the prism are carried out once. In the subsequent detection process, including detecting by replacing encoders of different precision models, the prism installation and debugging steps are no longer carried out, greatly reducing the workload. The prism and the encoder to be measured are rotated together through the main shaft dial. The collimator is used in combination with the prism to measure the rotation angle. The operation is simple and the accuracy is higher, which is suitable for various models of encoders. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The following further describes the present invention in conjunction with the drawings and specific embodiments:

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 is a cross-sectional view of the present invention;

[0027] Figure 3 is Figure 2 a partially enlarged view of area A in

[0028] Figure 4 is Figure 2 a partially enlarged view of area B in

[0029] Figure 5 is a schematic structural view of the fine-tuning rod;

[0030] Figure 6 is an assembly schematic view of the fine-tuning rod and the fine-tuning mechanism;

[0031] Wherein: 1 - fine-tuning mechanism, 2 - fine-tuning rod, 4 - supporting connecting shaft, 5 - supporting connecting plate, 6 - collimator, 7 - base plate, 8 - 23-plane prism, 9 - dial, 10 - detection bracket, 12 - collimator base, 14 - bushing, 15 - external thread locking ring, 16 - internal thread locking ring, 17 - main shaft, 18 - lower end centripetal bearing, 19 - bearing bracket, 20 - upper end centripetal bearing, 21 - support frame, 22 - locking nut, 101 - fine-tuning screw, 102 - fine-tuning spring, 201 - clamping end, 202 - connecting aluminum sheet, 3 - encoder to be measured. Specific embodiments

[0032] As shown in the figure, an encoder rapid precision detection device, characterized in that: it includes a fine-tuning mechanism 1, a supporting connecting plate 5, a collimator 6, a base plate 7, a 23-plane prism 8, a dial 9 and a detection bracket 10;

[0033] The fine-tuning mechanism 1 and the detection bracket 10 are respectively arranged on the base plate 7;

[0034] A main shaft 17 is arranged in the detection bracket 10 through a bushing 14, and a support frame 21 is further arranged on the bushing 14, wherein the bushing 14 is fixedly connected with the support frame 21, and a supporting connecting plate 5 is arranged on the support frame 21;

[0035] A 23-plane prism 8, a dial 9 and a locking nut 22 are sequentially arranged on the main shaft 17, and a supporting connecting shaft 4 for installing an encoder is further arranged at the end of the main shaft 17, and the supporting connecting shaft 4 and the supporting connecting plate 5 are in mutual cooperation in position; the supporting connecting shaft 4 and the supporting connecting plate 5 are used for installing the encoder to be measured.

[0036] The fine-tuning mechanism 1 includes a fine-tuning screw 101, a fine-tuning spring 102 and a fine-tuning rod 2;

[0037] One end of the fine-tuning rod 2 is respectively connected to the fine-tuning screw 101 and the fine-tuning spring 102, and a clamping end 201 that is shape-fitted to the main shaft 17 is provided at the other end. The clamping end 201 is sleeved on the main shaft 17, and the clamping end 201 meshes with the main shaft 17;

[0038] The main shaft 17 is connected to the bushing 14 through a lower centripetal bearing 18 and an upper centripetal bearing 20, and a bearing bracket 19 is provided between the lower centripetal bearing 18 and the upper centripetal bearing 20;

[0039] The position of the collimator 6 cooperates with the 23-plane prism 8.

[0040] The collimator 6 is arranged on the bottom plate 7 through a collimator base 12.

[0041] The collimator 6 is installed on the collimator base 12.

[0042] A stop is provided on the supporting connecting plate 5 and is shape-fitted to the support frame 21 and the encoder to be measured.

[0043] A stop is provided on the support frame 21 and is shape-fitted to the bushing 14.

[0044] A groove is provided on the upper surface of the locking nut 22.

[0045] The fine-tuning rod 2 includes a rod I and a rod II that are sequentially connected. The rod I and the rod II are connected by a connecting aluminum sheet 202, and the clamping end 201 is locked by a thread.

[0046] Stops are provided on the bushing 14 and the main shaft 17 and are positionally coordinated; the lower centripetal bearing 18 and the upper centripetal bearing 20 are adapted to the stops.

[0047] An externally threaded locking ring 15 is sleeved on the lower end of the main shaft 17, and the external thread of the main shaft 17 meshes with the internal thread on the inner wall of the externally threaded locking ring 15; an internally threaded locking ring 16 is further sleeved outside the externally threaded locking ring 15. An external thread is provided on the outer wall of the internally threaded locking ring 16, and an internal thread that meshes with the external thread of the internally threaded locking ring 16 is provided on the inner wall of the bushing 14; both the externally threaded locking ring 15 and the internally threaded locking ring 16 are in contact with the lower centripetal bearing 18.

[0048] The bearing bracket 19 is in contact with both the lower centripetal bearing 18 and the upper centripetal bearing 20.

[0049] One end of the fine-tuning rod 2 is respectively connected to the fine-tuning screw 101 and the fine-tuning spring 102. The other end is provided with a clamping end 201 that matches the shape of the main shaft 17. The clamping end 201 is locked with a thread. The clamping end 201 is sleeved on the main shaft 17, and the clamping end 201 meshes with the main shaft 17 to better control the tightness between the fine-tuning rod 2 and the main shaft 17. The fine-tuning rod 2 contacts the fine-tuning spring 102, and the fine-tuning spring 102 is always in a stressed state. The fine-tuning screw 101 is used to adjust the stress level of the fine-tuning spring 102. The clamping end 201 meshes with the main shaft 17. When the fine-tuning rod 2 makes a fine adjustment, the clamping end 201 will adjust the rotation of the main shaft 17 due to the meshing connection.

[0050] The lower centripetal bearing 18 and the upper centripetal bearing 20 are connected by a bearing bracket 19. The greater the distance between the lower centripetal bearing 18 and the upper centripetal bearing 20, the better the effect of eliminating the clearance. The bottom of the shaft sleeve 14 is bolted to the bottom plate 7, and at the same time, 3-point balancing is used for overall leveling.

[0051] After the encoder under test is installed in this application, a zeroing check of the whole needs to be carried out before the formal detection, that is, the cursor returns to zero after the 23-sided prism 8 rotates one week. At this time, whether the encoder position returns to the starting point. After completing the zeroing, the accuracy detection can be normally started at this time.

[0052] During the detection process, the dial 9 should not be rotated too fast. When the cursor appears on the screen, use the fine-tuning mechanism 1 to adjust the cursor movement until the encoder angle value coincides with the theoretical state angle value. At this time, the distance of the cursor from the center value is the accuracy value of the current encoder.

[0053] During the detection process, it is strictly prohibited to touch the prism with fingers or other objects, and keep the prism mirror surface clean.

[0054] The working principle of this solution is: the encoder under test is fixed on a specific adapter plate. A zeroing check needs to be carried out before the detection. At the same time, if the encoder under test has a clearing function, there is no position requirement during installation. If the encoder under test has no clearing function, the zero position of the encoder needs to coincide with the zero position on the detection table, and then locking and zeroing detection are carried out.

[0055] The zero position of the detection table mentioned above is the position of the cursor at the center of the screen when the first side of the 23-sided prism 8 faces the collimator 6. Since each side of the prism has a specific error correction value during production, the detection needs to start from the first side of the prism.

[0056] During the detection, when the cursor appears near the screen, use the fine-tuning mechanism 1 to smoothly move the cursor until the encoder angle value coincides with the theoretical state angle value. At this time, the distance of the cursor from the center value is the accuracy value of the current encoder. The 24th point is the zeroing point. When this point needs to be 0, the detection data of this time can represent the accuracy of the encoder under test.

Claims

1. A fast precision detection device for an encoder, characterized in that: Including a fine-tuning mechanism (1), a supporting connecting plate (5), a collimator (6), a base plate (7), a 23-faceted prism (8), a dial (9) and a detection bracket (10); The fine-tuning mechanism (1) and the detection bracket (10) are respectively arranged on the base plate (7); A main shaft (17) is arranged in the detection bracket (10) through a bushing (14), and a support frame (21) is also arranged on the bushing (14), wherein the bushing (14) is fixedly connected with the support frame (21), and a supporting connecting plate (5) is arranged on the support frame (21); A 23-faceted prism (8), a dial (9) and a locking nut (22) are sequentially arranged on the main shaft (17), and a supporting connecting shaft (4) for installing an encoder is also arranged at the end of the main shaft (17), and the supporting connecting shaft (4) and the supporting connecting plate (5) are in mutual cooperation in position; The fine-tuning mechanism (1) includes a fine-tuning screw (101), a fine-tuning spring (102) and a fine-tuning rod (2); One end of the fine-tuning rod (2) is respectively connected with the fine-tuning screw (101) and the fine-tuning spring (102), and a clamping end (201) which is in shape fit with the main shaft (17) is arranged at the other end, the clamping end (201) is sleeved on the main shaft (17), and the clamping end (201) is meshed with the main shaft (17); The main shaft (17) is connected with the bushing (14) through a lower centripetal bearing (18) and an upper centripetal bearing (20), and a bearing bracket (19) is arranged between the lower centripetal bearing (18) and the upper centripetal bearing (20); The position of the collimator (6) is in mutual cooperation with the 23-faceted prism (8).

2. The rapid precision detection device for an encoder according to claim 1, characterized in that: The collimator (6) is arranged on the base plate (7) through a collimator base (12).

3. An encoder fast precision detection device according to claim 1, characterized in that: The collimator (6) is installed on the collimator base (12).

4. An encoder fast precision detection device according to claim 1, characterized in that: A stop is arranged on the supporting connecting plate (5) and is in cooperation with the support frame (21) and the encoder to be measured.

5. An encoder rapid precision detection device according to claim 1, characterized in that: A stop is arranged on the support frame (21) and is in cooperation with the bushing (14).

6. The rapid precision detection device for an encoder according to claim 1, wherein: A groove is arranged on the upper surface of the locking nut (22).

7. An encoder rapid precision detection device according to claim 1, characterized in that: The fine-tuning rod (2) includes a rod I and a rod II which are sequentially connected, wherein the rod I and the rod II are connected through a connecting aluminum sheet (202), and the clamping end (201) is locked by threads.

8. An encoder rapid precision detection device according to claim 1, characterized in that: Stops which are in mutual cooperation in position are arranged on the bushing (14) and the main shaft (17); the lower centripetal bearing (18) and the upper centripetal bearing (20) are mutually adapted to the stops.

9. An encoder rapid precision detection device according to claim 1, characterized in that: An externally threaded locking ring (15) is sleeved on the lower end of the main shaft (17), and the external thread of the main shaft (17) is meshed with the internal thread on the inner wall of the externally threaded locking ring (15); an internally threaded locking ring (16) is further sleeved outside the externally threaded locking ring (15), an external thread is arranged on the outer wall of the internally threaded locking ring (16), and an internal thread which is meshed with the external thread of the internally threaded locking ring (16) is arranged on the inner wall of the bushing (14); both the externally threaded locking ring (15) and the internally threaded locking ring (16) are in contact with the lower centripetal bearing (18).

10. A rapid precision detection device for an encoder according to claim 1, characterized in that: The bearing bracket (19) is in contact with both the lower centripetal bearing (18) and the upper centripetal bearing (20).

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