Rotary encoder testing device

Abstract

The invention belongs to the technical field of encoder testing, and discloses a rotary encoder testing device which comprises a testing plate, the top of the testing plate is fixedly connected with a graduated scale plate, one side of the graduated scale plate is fixedly connected with a straight toothed plate, the top of the straight toothed plate is meshed with a straight gear, one side of the straight gear is fixedly connected with a fixing part, and the fixing part is fixedly connected with the graduated scale plate. And a driving assembly is movably connected to the interior of the fixing piece, and a clamping assembly is movably connected to the exterior of the driving assembly. Through arrangement of a straight gear, a fixing part, a driving assembly, a clamping assembly, an encoder main body and other structures, a driving motor drives a driving shaft to rotate, the driving shaft drives a first gear to rotate, the first gear is engaged with a second gear, so that the second gear drives a bidirectional screw rod to rotate; the two ends of the two-way screw and the threaded parts are in threaded rotation, so that the two threaded parts move along the rod wall of the two-way screw, the applicability of the gear is improved, and meanwhile the testing efficiency of the encoder is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of encoder testing, in particular to a rotary encoder testing device. Background Art

[0002] An encoder is a device that compiles and converts signals (such as bit streams) or data into signal forms that can be used for communication, transmission and storage. The working principles of encoders vary, depending on their type and purpose. Generally speaking, encoders can convert angular displacement or linear displacement into electrical signals for communication, transmission and storage. Existing encoders need to be tested before use. Encoder testing is an important part of ensuring that the encoder works properly and meets performance standards. Through testing, the purpose of the encoder can be clarified and the encoder can be ensured to work properly.

[0003] In the prior art, encoders are mostly tested through encoder testing devices. The gears roll on the racks to convert the sliding in the horizontal position into angular rotation. The accuracy of the encoder is tested by comparing the angles on the scale. Since encoders have various sizes, when the gears are connected to the input shaft of the encoder body for testing, it is necessary to replace gears of different sizes. This test reduces the applicability of the gears and reduces the test efficiency of the encoder. A rotary encoder testing device is now proposed to solve the above problems. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a rotary encoder testing device, which solves the problems of low gear applicability and low encoder testing efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rotary encoder testing device, comprising a testing plate, a scale plate fixedly connected to the top of the testing plate, a spur plate fixedly connected to one side of the scale plate, a spur gear meshed with the top of the spur plate, a fixing piece fixedly connected to one side of the spur gear, a driving assembly movably connected to the inside of the fixing piece, a clamping assembly movably connected to the outside of the driving assembly, a connecting shaft fixedly connected to the outside of the fixing piece, a servo motor fixedly connected to the one end of the connecting shaft, a motor frame fixedly connected to the outside of the servo motor, an encoder body movably connected to the inside of the clamping assembly, a fixing piece fixedly connected to one side of the fixing piece, an adjusting module hingedly connected to the inside of the connecting piece, and a pointer fixedly connected to one side of the spur gear.

[0006] Preferably, the driving assembly comprises a motor seat, the interior of the motor seat is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to a driving shaft, and the exterior of the driving shaft is fixedly connected to a first gear.

[0007] Preferably, a second gear is meshed with an outer edge of the first gear, a bidirectional screw is fixedly connected to a middle portion of the second gear, and a fixing rod is fixedly connected to the interior of the fixing member.

[0008] Preferably, the outside of the motor seat is fixedly connected to the fixing member and the connecting shaft respectively, the two ends of the drive shaft are rotatably connected to the fixing member, the first gear is located inside the fixing member, and both ends of the bidirectional screw and the fixing rod are rotatably connected to the fixing member and the connecting shaft.

[0009] Preferably, the clamping assembly comprises a threaded member, one side of the threaded member is fixedly connected to a clamping plate, one side of the clamping plate is hinged with spring telescopic rods in an annular shape and equidistantly, and the other side of the clamping plate is fixedly connected to a clamping pad.

[0010] Preferably, the clamping assembly is a symmetrical structure, the interior of the threaded member is threadedly connected to the bidirectional screw, the interior of the threaded member is movably connected to the fixed rod, the clamping plate and the clamping pad are both arc-shaped structures, and one end of each spring telescopic rod is hinged to the spur gear.

[0011] Preferably, the fixing assembly comprises a fixing cylinder, the interior of the fixing cylinder is annular and equidistantly fixedly connected with supporting springs, one end of each of the four supporting springs is fixedly connected to a fixing plate, and one side of the fixing plate is fixedly connected to a fixing pad.

[0012] Preferably, the exterior of the fixing cylinder is fixedly connected to the connecting piece, one side of the fixing plate is an inclined surface structure, and the structure formed by the fixing plates is a complete circular ring.

[0013] Preferably, the adjustment module includes an articulated rod, both ends of the articulated rod are fixedly connected to a movable plate, the bottom of the movable plate is fixedly connected to a threaded sleeve, the internal thread of the threaded sleeve is connected to a threaded inner rod, one end of the threaded inner rod is fixedly connected to a handle, and one end of the threaded inner rod is rotatably connected to a limiting plate.

[0014] Preferably, the middle portion of the hinged rod is hinged to the connecting piece, the bottom of the movable plate is movably connected to the test plate, and one side of the limit plate is movably engaged with the test plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention is provided with structures such as spur gears, fixing parts, driving components, clamping components, and encoder main body, so that a driving motor drives a driving shaft to rotate, and the driving shaft drives a first gear to rotate, and the first gear is meshed with a second gear, so that the second gear drives a bidirectional screw to rotate, and both ends of the bidirectional screw are threadedly rotated with a threaded component so that the two threaded components move along the rod wall of the bidirectional screw, and the threaded component slides along the rod wall of the fixing rod, and the two threaded components drive the clamping plates to gradually approach and clamp and fix the input shaft of the encoder main body through a clamping pad, so that the applicability of the gears is improved, and the test efficiency of the encoder is improved at the same time;

[0017] The present invention is provided with structures such as an encoder body, a fixing assembly, a connecting piece, and an adjusting module. When the encoder body is installed inside the fixing assembly, the encoder body squeezes the fixing plate and moves toward the inside of the fixing cylinder. The outside of the encoder body fits with the fixing pad, and the supporting spring is compressed. The compression of the supporting spring enables the fixing plate to clamp the encoder body, and the fixing cylinder is turned over with the hinged rod as the center of the circle. The input shaft of the encoder body is placed horizontally, and the handle is rotated. The handle drives the threaded inner rod to rotate inside the limiting plate. The threaded inner rod and the threaded sleeve are threadedly rotated so that the threaded sleeve drives the moving plate and the hinged rod to move along the rod wall of the threaded inner rod. The moving plate slides along the inside of the test plate until the bottom of the moving plate is clamped with the test plate. The fixing assembly can be suitable for encoder bodies of different sizes and limit them.

[0018] The present invention is provided with structures such as a scale plate, a spur gear plate, a spur gear, a servo motor, and a motor frame. The servo motor drives the connecting shaft to rotate. The connecting shaft drives the spur gear to rotate through a fixing member, so that the spur gear rolls along the spur gear plate. The motor frame drives the servo motor to slide along the T-slot. The spur gear rotates and drives the input shaft to rotate at the same time, so that it is convenient to detect the encoder body. The rolling distance of the spur gear on the spur gear plate is detected by the scale plate, and the rotation angle of the spur gear is calculated, so that it is convenient to accurately detect the encoder body, so that the encoder body can roll along the spur gear plate through the servo motor, which is convenient for testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall relationship structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the cross-sectional relationship structure of the drive assembly of the present invention;

[0021] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged relationship structure of the structure at A in the middle;

[0022] Figure 4 It is a schematic diagram of the cross-sectional relationship structure of the fixing assembly of the present invention;

[0023] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged relationship structure of the structure at B in the middle;

[0024] Figure 6 It is a schematic diagram of the positional relationship structure of the drive assembly of the present invention;

[0025] Figure 7 It is a schematic diagram of the disassembly relationship structure of the drive assembly of the present invention;

[0026] Figure 8 It is a schematic diagram of the positional relationship structure of the fixing components of the present invention;

[0027] Fig. 9 It is a schematic diagram of the disassembly relationship structure of the fixing assembly of the present invention.

[0028] In the figure: 1. test plate; 2. scale plate; 3. spur plate; 4. spur gear; 5. fixing piece; 6. driving assembly; 601. motor seat; 602. driving motor; 603. driving shaft; 604. first gear; 605. second gear; 606. bidirectional screw; 607. fixing rod; 7. clamping assembly; 701. threaded member; 702. clamping plate; 703. spring telescopic rod; 704. clamping pad; 8. connecting shaft; 9. servo motor; 10. motor frame; 11. encoder body; 12. fixing assembly; 121. fixing cylinder; 122. supporting spring; 123. fixing plate; 124. fixing pad; 13. connecting piece; 14. adjusting module; 141. hinged rod; 142. moving plate; 143. threaded sleeve; 144. threaded inner rod; 145. handle; 146. limit plate; 15. pointer. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figures 1 to 9As shown, the present invention provides a rotary encoder testing device, including a testing plate 1, a scale plate 2 is fixedly connected to the top of the testing plate 1, a spur plate 3 is fixedly connected to one side of the scale plate 2, a spur gear 4 is meshed on the top of the spur plate 3, a fixing member 5 is fixedly connected to one side of the spur gear 4, a driving assembly 6 is movably connected to the inside of the fixing member 5, a clamping assembly 7 is movably connected to the outside of the driving assembly 6, a connecting shaft 8 is fixedly connected to the outside of the fixing member 5, a servo motor 9 is fixedly connected to one end of the connecting shaft 8, a motor frame 10 is fixedly connected to the outside of the servo motor 9, an encoder body 11 is movably connected to the inside of the clamping assembly 7, a fixing member 12 is fixedly connected to the outside of the encoder body 11, a connecting member 13 is fixedly connected to one side of the fixing member 12, an adjusting module 14 is hingedly connected to the inside of the connecting member 13, and a pointer 15 is fixedly connected to one side of the spur gear 4;

[0031] The above scheme is adopted: the driving motor 602 drives the driving shaft 603 to rotate, the driving shaft 603 drives the first gear 604 to rotate, the first gear 604 is meshed with the second gear 605, so that the second gear 605 drives the bidirectional screw 606 to rotate, the two ends of the bidirectional screw 606 and the threaded member 701 are threadedly rotated so that the two threaded members 701 move along the rod wall of the bidirectional screw 606, the threaded member 701 slides along the rod wall of the fixed rod 607, and the two threaded members 701 drive the clamping plate 702 to gradually approach and clamp the input shaft of the encoder body 11 through the clamping pad 704;

[0032] When the encoder body 11 is installed inside the fixing assembly 12, the encoder body 11 squeezes the fixing plate 123 and moves toward the inside of the fixing cylinder 121, the outside of the encoder body 11 fits with the fixing pad 124, and the support spring 122 is compressed. The compression of the support spring 122 enables the fixing plate 123 to clamp the encoder body 11, and the fixing cylinder 121 is turned over with the hinge rod 141 as the center of the circle, and the input shaft of the encoder body 11 is placed horizontally, and the handle 145 is rotated, and the handle 145 drives the threaded inner rod 144 to rotate inside the limit plate 146, and the threaded inner rod 144 and the threaded sleeve 143 are threadedly rotated so that the threaded sleeve 143 drives the moving plate 142 and the hinge rod 141 to move along the rod wall of the threaded inner rod 144, and the moving plate 142 slides along the inside of the test plate 1 until the bottom of the moving plate 142 is engaged with the test plate 1;

[0033] The servo motor 9 drives the connecting shaft 8 to rotate, and the connecting shaft 8 drives the spur gear 4 to rotate through the fixing part 5, so that the spur gear 4 rolls along the spur gear plate 3, and the motor frame 10 drives the servo motor 9 to slide along the T-slot. The spur gear 4 rotates and drives the input shaft to rotate at the same time, so as to facilitate the detection of the encoder body 11. The rolling distance of the spur gear 4 on the spur gear plate 3 is detected by the scale plate 2, and the rotation angle of the spur gear 4 is calculated, so as to facilitate the accurate detection of the encoder body 11, thereby improving the applicability of the gear and improving the testing efficiency of the encoder.

[0034] like Figure 1 , Figure 2 , Figures 5 to 7 As shown, the driving assembly 6 includes a motor base 601, the interior of the motor base 601 is fixedly connected to a driving motor 602, the output end of the driving motor 602 is fixedly connected to a driving shaft 603, the exterior of the driving shaft 603 is fixedly connected to a first gear 604, the outer edge of the first gear 604 is meshed with a second gear 605, the middle of the second gear 605 is fixedly connected to a bidirectional screw 606, the interior of the fixing member 5 is fixedly connected to a fixing rod 607, the exterior of the motor base 601 is fixedly connected to the fixing member 5 and the connecting shaft 8 respectively, both ends of the driving shaft 603 are rotatably connected to the fixing member 5, the first gear 604 is located inside the fixing member 5, and both ends of the bidirectional screw 606 and the fixing rod 607 are rotatably connected to the fixing member 5 and the connecting shaft 8;

[0035] The above scheme is adopted: the motor seat 601 is limited and fixed by the fixing member 5, the motor seat 601 installs and fixes the driving motor 602, the fixing member 5 is provided with rotating holes that are adapted to the size of the driving shaft 603 on both sides, the driving shaft 603 is limited and supported by the rotating holes, the connecting shaft 8 is provided with rotating grooves that are adapted to the size of the driving shaft 603 on both sides, the driving shaft 603 is limited by the rotating grooves, the driving motor 602 drives the driving shaft 603 to rotate, the driving shaft 603 drives the first gear 604 to rotate, the first gear 604 is meshed with the second gear 605, so that the second gear 605 drives the bidirectional screw 606 to rotate, and the two ends of the bidirectional screw 606 are threadedly rotated with the threaded member 701 so that the two threaded members 701 move along the rod wall of the bidirectional screw 606;

[0036] The threaded member 701 slides along the rod wall of the fixing rod 607, and the two threaded members 701 drive the clamping plate 702 to gradually approach and clamp the input shaft of the encoder body 11 through the clamping pad 704. The spring telescopic rod 703 is stretched, and the fixing member 5 limits and fixes the bidirectional screw 606 and the fixing rod 607 respectively. Limiting holes and fixing holes that are matched in size with the bidirectional screw 606 and the fixing rod 607 are respectively opened on both sides of the fixing member 5. The bidirectional screw 606 is connected and fixed to the inside of the connecting shaft 8 and the fixing member 5 through the limiting holes. The bidirectional screw 606 is rotatably connected to the connecting shaft 8 and the fixing member 5 respectively through the limiting holes, and the fixing rod 607 is fixedly connected to the fixing member 5 and the connecting shaft 8 respectively through the fixing holes.

[0037] like Figure 1 , Figures 4 to 7 As shown, the clamping assembly 7 includes a threaded member 701, one side of the threaded member 701 is fixedly connected to a clamping plate 702, one side of the clamping plate 702 is annularly equidistantly hinged with a spring telescopic rod 703, and the other side of the clamping plate 702 is fixedly connected to a clamping pad 704. The clamping assembly 7 is a symmetrical structure. The interior of the threaded member 701 is threadedly connected to the bidirectional screw 606, and the interior of the threaded member 701 is movably connected to the fixed rod 607. The clamping plate 702 and the clamping pad 704 are both arc-shaped structures, and one end of each spring telescopic rod 703 is hinged to the spur gear 4.

[0038] The above scheme is adopted: the two threaded members 701 are connected and limited by the fixed rod 607 and the bidirectional screw 606, the two threaded members 701 are moved by the bidirectional screw 606, and the two threaded members 701 move toward each other, the two ends of the bidirectional screw 606 and the threaded members 701 are threadedly rotated, so that the two threaded members 701 move along the rod wall of the bidirectional screw 606, and the threaded members 701 slide along the rod wall of the fixed rod 607, and the two threaded members 701 drive the clamping plate 702 to gradually approach and clamp the input shaft of the encoder body 11 through the clamping pad 704;

[0039] The clamping plate 702 is connected and fixed by a screw member 701, and the clamping plate 702 is connected and fixed to the clamping pad 704. The clamping plate 702 and the clamping pad 704 are both located inside the spur gear 4. One end of the spring telescopic rod 703 is fixedly connected to the inside of the spur gear 4. Arc grooves matching the size of the spring telescopic rod 703 are provided on both sides of the inside of the spur gear 4. The spring telescopic rod 703 is connected and limited inside the spur gear 4 through the arc groove, so that one side of the clamping plate 702 is easy to fit with the spur gear 4.

[0040] like Figures 1 to 4 , Figure 8 , Fig. 9As shown, the fixing assembly 12 includes a fixing cylinder 121, the interior of the fixing cylinder 121 is annular and fixedly connected with support springs 122 at equal distances, one end of each of the four support springs 122 is fixedly connected with a fixing plate 123, one side of the fixing plate 123 is fixedly connected with a fixing pad 124, the outside of the fixing cylinder 121 is fixedly connected with the connecting member 13, one side of the fixing plate 123 is an inclined structure, and the structure formed by the fixing plate 123 is a complete circular ring;

[0041] The above scheme is adopted: the support spring 122 is limited and fixed by the fixing cylinder 121, the support spring 122 is located on the inner wall of the fixing cylinder 121, and the support spring 122 is a symmetrical structure, the fixing plate 123 is pulled and fixed by the support spring 122, and when the encoder body 11 is installed inside the fixing assembly 12, the encoder body 11 squeezes the fixing plate 123 to move inside the fixing cylinder 121, the outside of the encoder body 11 fits with the fixing pad 124, and the support spring 122 is compressed. The compression of the support spring 122 can enable the fixing plate 123 to clamp the encoder body 11. After the encoder body 11 is installed, the fixing cylinder 121 is turned over with the hinge rod 141 as the center of the circle, and the input shaft of the encoder body 11 is placed horizontally. The encoder body 11 can be clamped and fixed by the fixing pad 124, which can increase the friction between the encoder body 11 and the fixing plate 123 to prevent the encoder body 11 from being displaced. The encoder body 11 can be squeezed into the interior of the fixing cylinder 121 through the inclined structure of the fixing plate 123.

[0042] like Figures 1 to 4 , Figure 8 , Fig. 9 As shown, the adjustment module 14 includes an articulated rod 141, both ends of the articulated rod 141 are fixedly connected to a moving plate 142, the bottom of the moving plate 142 is fixedly connected to a threaded sleeve 143, the internal thread of the threaded sleeve 143 is connected to a threaded inner rod 144, one end of the threaded inner rod 144 is fixedly connected to a handle 145, one end of the threaded inner rod 144 is rotatably connected to a limiting plate 146, the middle part of the articulated rod 141 is hinged to the connecting member 13, the bottom of the moving plate 142 is movably connected to the test plate 1, and one side of the limiting plate 146 is movably connected to the test plate 1;

[0043] The above scheme is adopted: the handle 145 is rotated, and the handle 145 drives the threaded inner rod 144 to rotate inside the limit plate 146. The threaded inner rod 144 and the threaded sleeve 143 are threadedly rotated so that the threaded sleeve 143 drives the movable plate 142 and the hinged rod 141 to move along the rod wall of the threaded inner rod 144. The movable plate 142 slides along the inside of the test plate 1 until the bottom of the movable plate 142 is clamped with the test plate 1, and one end of the input shaft is in contact with the fixing member 5. The fixing cylinder 121 and the adjustment module 14 are connected through the connecting member 13. The connection 13 is a cross structure, and the middle part of the connection 13 is hinged to the hinge rod 141, so that the connection 13 can drive the fixed cylinder 121 to flip with the hinge rod 141 as the center. The hinge rod 141 is limited and fixed by the movable plate 142, and the movable plate 142 supports and fixes the threaded sleeve 143. The threaded sleeve 143 is threadedly connected to the threaded inner rod 144. The rotation of the threaded inner rod 144 can drive the threaded sleeve 143 to move, so that the threaded sleeve 143 can pull the connection 13 to move through the movable plate 142.

[0044] The working principle and use process of the present invention:

[0045] First, the encoder body 11 is installed inside the fixing assembly 12. During installation, the encoder body 11 presses the fixing plate 123 to move inside the fixing cylinder 121, and the outside of the encoder body 11 fits with the fixing pad 124. At this time, the support spring 122 is compressed, and the compression of the support spring 122 enables the fixing plate 123 to clamp the encoder body 11. After the encoder body 11 is installed, the fixing cylinder 121 is turned over with the hinge rod 141 as the center, and the input shaft of the encoder body 11 is placed horizontally.

[0046] The handle 145 is rotated, and the handle 145 drives the threaded inner rod 144 to rotate inside the limit plate 146. The threaded inner rod 144 and the threaded sleeve 143 are threadedly rotated so that the threaded sleeve 143 drives the movable plate 142 and the hinged rod 141 to move along the rod wall of the threaded inner rod 144. At this time, the movable plate 142 slides along the inside of the test plate 1 until the bottom of the movable plate 142 is clamped with the test plate 1. At this time, one end of the input shaft is in contact with the fixing member 5.

[0047] The driving motor 602 drives the driving shaft 603 to rotate, and the driving shaft 603 drives the first gear 604 to rotate. The first gear 604 is meshed with the second gear 605, so that the second gear 605 drives the bidirectional screw 606 to rotate. The two ends of the bidirectional screw 606 are threadedly rotated with the threaded member 701 so that the two threaded members 701 move along the rod wall of the bidirectional screw 606. At this time, the threaded member 701 slides along the rod wall of the fixed rod 607. The two threaded members 701 drive the clamping plate 702 to gradually approach and clamp the input shaft of the encoder body 11 through the clamping pad 704. At this time, the spring telescopic rod 703 is stretched;

[0048] The servo motor 9 drives the connecting shaft 8 to rotate, and the connecting shaft 8 drives the spur gear 4 to rotate through the fixing part 5, so that the spur gear 4 rolls along the spur gear plate 3. At this time, the motor frame 10 drives the servo motor 9 to slide along the T-slot, and the spur gear 4 rotates while driving the input shaft to rotate, so as to facilitate the detection of the encoder body 11. The rolling distance of the spur gear 4 on the spur gear plate 3 is detected by the scale plate 2, and the rotation angle of the spur gear 4 is calculated, so as to facilitate the accurate detection of the encoder body 11 and complete the operation.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary encoder testing device, comprising a testing board (1), characterized in that: The top of the test plate (1) is fixedly connected to a scale plate (2), one side of the scale plate (2) is fixedly connected to a spur plate (3), the top of the spur plate (3) is meshed with a spur gear (4), one side of the spur gear (4) is fixedly connected to a fixing member (5), the inside of the fixing member (5) is movably connected to a driving assembly (6), the outside of the driving assembly (6) is movably connected to a clamping assembly (7), the outside of the fixing member (5) is fixedly connected to a connecting shaft (8), and the connecting shaft ( One end of the servo motor (8) is fixedly connected to a servo motor (9), the outside of the servo motor (9) is fixedly connected to a motor frame (10), the inner side of the clamping assembly (7) is movably connected to an encoder body (11), the outside of the encoder body (11) is movably connected to a fixing assembly (12), one side of the fixing assembly (12) is fixedly connected to a connecting piece (13), the inside of the connecting piece (13) is hinged with an adjusting module (14), and one side of the spur gear (4) is fixedly connected to a pointer (15).

2. The rotary encoder testing device according to claim 1, characterized in that: The driving assembly (6) comprises a motor base (601), the interior of the motor base (601) is fixedly connected to a driving motor (602), the output end of the driving motor (602) is fixedly connected to a driving shaft (603), and the exterior of the driving shaft (603) is fixedly connected to a first gear (604).

3. The rotary encoder testing device according to claim 2, characterized in that: The outer edge of the first gear (604) is meshed with a second gear (605), the middle of the second gear (605) is fixedly connected with a bidirectional screw (606), and the interior of the fixing member (5) is fixedly connected with a fixing rod (607).

4. The rotary encoder testing device according to claim 3, characterized in that: The outside of the motor base (601) is fixedly connected to the fixing member (5) and the connecting shaft (8) respectively, the two ends of the driving shaft (603) are rotatably connected to the fixing member (5), the first gear (604) is located inside the fixing member (5), and the two ends of the bidirectional screw (606) and the fixing rod (607) are rotatably connected to the fixing member (5) and the connecting shaft (8).

5. The rotary encoder testing device according to claim 1, characterized in that: The clamping assembly (7) comprises a threaded member (701), one side of the threaded member (701) is fixedly connected to a clamping plate (702), one side of the clamping plate (702) is hinged with spring telescopic rods (703) in a ring shape and equidistantly, and the other side of the clamping plate (702) is fixedly connected to a clamping pad (704).

6. The rotary encoder testing device according to claim 5, characterized in that: The clamping assembly (7) is a symmetrical structure. The interior of the threaded member (701) is threadedly connected to the bidirectional screw (606). The interior of the threaded member (701) is movably connected to the fixed rod (607). The clamping plate (702) and the clamping pad (704) are both arc-shaped structures. One end of each spring telescopic rod (703) is hinged to the spur gear (4).

7. The rotary encoder testing device according to claim 1, characterized in that: The fixing assembly (12) comprises a fixing cylinder (121), the interior of the fixing cylinder (121) being annular and equidistantly fixedly connected with supporting springs (122), one end of each of four supporting springs (122) being fixedly connected with a fixing plate (123), and one side of the fixing plate (123) being fixedly connected with a fixing pad (124).

8. The rotary encoder testing device according to claim 7, characterized in that: The exterior of the fixing cylinder (121) is fixedly connected to the connecting piece (13); one side of the fixing plate (123) is an inclined surface structure; and the structure formed by the fixing plate (123) is a complete circular ring.

9. The rotary encoder testing device according to claim 1, characterized in that: The adjustment module (14) comprises a hinged rod (141), both ends of the hinged rod (141) are fixedly connected to a movable plate (142), the bottom of the movable plate (142) is fixedly connected to a threaded sleeve (143), the internal thread of the threaded sleeve (143) is connected to a threaded inner rod (144), one end of the threaded inner rod (144) is fixedly connected to a handle (145), and one end of the threaded inner rod (144) is rotatably connected to a limiting plate (146).

10. The rotary encoder testing device according to claim 9, characterized in that: The middle portion of the hinged rod (141) is hinged to the connecting piece (13), the bottom of the movable plate (142) is movably connected to the test plate (1), and one side of the limit plate (146) is movably engaged with the test plate (1).

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