Gearbox coupling high-precision grabbing positioning disc structure

Abstract

The utility model provides a kind of gear box coupling high-precision grabbing positioning disc structure, comprising: positioning disc main body, positioning disc main body is equipped with the sleeve base for placing sleeve and the inner hub tooth base for placing inner hub tooth;Sleeve centring assembly, sleeve centring assembly is set on positioning disc main body, for positioning the position of sleeve on sleeve base;Inner hub tooth centring assembly, inner hub tooth centring assembly is set on positioning disc main body, for positioning the position of inner hub tooth on inner hub tooth base;Bolt positioning frame, bolt positioning frame is set on positioning disc main body, and bolt positioning frame is equipped with multiple placement grooves for placing bolt;Jig assembly, jig assembly is set on positioning disc main body, for pressing sleeve on sleeve base. The utility model constructs foolproof misplacement mechanism by physical reference positioning design, eliminates artificial placement error.

Description

Technical Field

[0001] This utility model belongs to the field of automation technology, and in particular relates to a high-precision gripping and positioning disk structure for gearbox couplings. Background Technology

[0002] The subway gearbox coupling is a core component of the power transmission system. Its core function is to transmit the rotational torque output by the traction motor to the gearbox input shaft without loss through a high-precision alignment and rigid / elastic coupling structure. However, after long-term high-load operation, the coupling requires systematic maintenance. This involves disassembling the inner hub gear and sleeve structure, removing oil and metal debris, inspecting tooth surface wear, cracks, and meshing accuracy, and reassembling it after confirming there are no abnormalities. Special grease is then injected to restore its power transmission performance and fatigue resistance.

[0003] Automated assembly of couplings typically involves manually placing components onto a positioning fixture. A six-axis robot then picks up the cleaned and inspected inner hub teeth from the fixture, aligns them according to the fixture's preset axial and circumferential references, and inserts them into the sleeve in their original positions. The robot then switches its gripping jaws to pick up bolts pre-placed on the positioning plate one by one. A 2D vision system precisely locates the bolt holes, guiding the bolts vertically into the inner hub tooth bolt holes, and then tightens them in stages using a tightening gun. However, manual placement of components introduces uncontrollable positional deviations, directly affecting the robot's gripping accuracy and creating a cumulative error effect. Utility Model Content

[0004] The purpose of this utility model is to provide a high-precision gripping and positioning disk structure for gearbox couplings, which constructs a foolproof placement mechanism through physical benchmark positioning design to eliminate manual placement errors.

[0005] This utility model is achieved through the following technical solution:

[0006] A high-precision gripping and positioning disk structure for a gearbox coupling includes:

[0007] The positioning disk body is provided with a sleeve base for placing the sleeve and an inner hub tooth base for placing the inner hub tooth;

[0008] The sleeve alignment component is mounted on the positioning plate body and is used to position the sleeve on the sleeve base.

[0009] The inner hub tooth alignment component is set on the positioning plate body and is used to position the inner hub tooth on the inner hub tooth base.

[0010] Bolt positioning frame, which is set on the main body of the positioning plate, has multiple slots for placing bolts;

[0011] The clamping assembly is mounted on the positioning plate body and is used to press the sleeve onto the sleeve base.

[0012] Furthermore, the inner hub tooth alignment assembly includes a positioning block and a sliding mechanism. One end of the positioning block is a pointed end, and the other end is a flat end. The flat end of the positioning block is disposed on the sliding mechanism, which is disposed on the positioning disk body and is used to drive the positioning block to move so that the pointed end of the positioning block is inserted into the tooth groove of the inner hub tooth.

[0013] Furthermore, the sliding mechanism includes a mounting base, a guide cylinder, a first connecting rod, an arc-shaped plate, a column, and a pressing handle. The guide cylinder is mounted on the mounting base via a first bracket. The column is located on one side of the guide cylinder and mounted on the mounting base. One end of the bottom of the pressing handle is hinged to the column, and the other end of the bottom of the pressing handle is hinged to one end of the arc-shaped plate. The pressing handle is provided with a clamping groove that is interference-fitted with the arc-shaped plate. The number of first connecting rods is set to multiple, and each first connecting rod has a different length. Multiple first connecting rods can be selectively fitted into the guide cylinder. One end of the first connecting rod is detachably connected to the flat end of the positioning block, and the other end of the first connecting rod is detachably connected to the end of the arc-shaped plate away from the pressing handle. When the pressing handle is pressed down, the arc-shaped plate can be inserted into the clamping groove.

[0014] Furthermore, the number of positioning blocks is set to multiple, and the multiple positioning blocks have different sizes. Each positioning block can be selectively set on the sliding mechanism.

[0015] Furthermore, the positioning block is made of PVC material.

[0016] Furthermore, the sleeve centering assembly includes a centering fixture and two centering positioning pins. The two centering positioning pins are symmetrically arranged on both sides of the sleeve base and are mounted on the positioning plate body. The centering fixture includes a ring and a cross plate. The cross plate includes a first end, a second end, a third end, and a fourth end. The first end, the second end, the third end, and the fourth end are respectively connected to the ring through a second connecting rod. The first end and the third end are provided with positioning holes for the centering positioning pins to pass through. Positioning rods are respectively provided on the inner sidewall of the ring at the middle position between the first end and the second end and at the middle position between the third end and the fourth end.

[0017] Furthermore, the centering pin is mounted on the main body of the positioning plate via a second bracket.

[0018] Furthermore, the positioning disk body is provided with a first groove for placing the sleeve base and a second groove for placing the inner hub gear base. The bottom of the first groove and the second groove are provided with through holes. The sleeve base is installed on the first groove and the inner hub gear base is installed on the second groove.

[0019] Furthermore, the positioning disk body is equipped with a QR code tray, and the QR code tray is equipped with a magnetic fixing component.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: the sleeve centering component positions the sleeve on the sleeve base; and the inner hub tooth centering component positions the inner hub tooth on the inner hub tooth base. Thus, a foolproof and error-proof mechanism is constructed through physical benchmark positioning design, eliminating manual placement errors, ensuring the meshing accuracy of the inner and outer teeth of the coupling and the alignment accuracy of the flange hole, reducing the reliance on complex algorithm correction, and ultimately achieving high-precision automated assembly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the high-precision gripping and positioning disk structure of the gearbox coupling of this utility model;

[0022] Figure 2 This is a side view of the high-precision gripping and positioning disk structure of the gearbox coupling of this utility model.

[0023] Figure 3 This is a schematic diagram of the sleeve base of the high-precision gripping positioning disk structure of the gearbox coupling of this utility model;

[0024] Figure 4 This is a schematic diagram of the inner hub gear base of the high-precision gripping positioning disk structure of the gearbox coupling of this utility model;

[0025] Figure 5 This is a schematic diagram of the sleeve centering component of the high-precision gripping and positioning disk structure of the gearbox coupling of this utility model;

[0026] Figure 6 This is a schematic diagram of the inner hub gear centering component of the high-precision gripping and positioning disk structure of the gearbox coupling of this utility model;

[0027] Figure 7 This is a cross-sectional view of the inner hub gear centering component of the high-precision gripping and positioning disc structure of the gearbox coupling of this utility model.

[0028] In the figure, 1-positioning disc body, 2-sleeve base, 3-inner hub gear base, 4-sleeve centering assembly, 41-centering positioning pin, 42-centering fixture, 421-ring, 422-first end, 423-second end, 424-third end, 425-fourth end, 426-positioning hole, 427-second connecting rod, 428-positioning rod, 43-second bracket, 5-inner hub gear centering assembly, 51-positioning block, 52-mounting seat, 53-guide cylinder, 54-first connecting rod, 55-arc plate, 56-column, 57-press handle, 58-clamping groove, 59-first bracket, 6-bolt positioning frame, 7-clamping assembly, 8-sleeve, 9-inner hub gear. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Please see Figures 1 to 4 , Figure 1This is a schematic diagram of the high-precision gripping and positioning disk structure of the gearbox coupling of this utility model. Figure 2 This is a side view of the high-precision gripping and positioning disc structure of the gearbox coupling of this utility model (the inner hub gear centering component is not shown in the figure). Figure 3 This is a schematic diagram of the sleeve base of the high-precision gripping and positioning disc structure of the gearbox coupling of this utility model. Figure 4 This is a schematic diagram of the inner hub gear base of the high-precision gripping and positioning disc structure for gearbox couplings of this utility model. A high-precision gripping and positioning disc structure for gearbox couplings includes a positioning disc body 1, a sleeve alignment component 4, an inner hub gear alignment component 5, a bolt positioning frame 6, and a clamping assembly 7. The positioning disc body 1 is provided with a sleeve base 2 for placing a sleeve 8 and an inner hub gear base 3 for placing an inner hub gear 9. The sleeve alignment component 4 is disposed on the positioning disc body 1 and is used to position the sleeve 8 on the sleeve base 2. The inner hub gear alignment component 5 is disposed on the positioning disc body 1 and is used to position the inner hub gear 9 on the inner hub gear base 3. The bolt positioning frame 6 is disposed on the positioning disc body 1 and has multiple placement slots for placing bolts. The clamping assembly 7 is disposed on the positioning disc body 1 and is used to press the sleeve 8 onto the sleeve base 2.

[0035] This utility model's high-precision gripping and positioning disk structure for gearbox couplings uses a sleeve alignment component 4 to position the sleeve 8 on the sleeve base 2, and an inner hub tooth alignment component 5 to position the inner hub tooth 9 on the inner hub tooth base 3. This achieves rapid and high-precision positioning of the inner hub tooth 9 and sleeve 8 of the coupling. By constructing a mistake-proof and error-prevention mechanism through physical benchmark positioning design, it eliminates manual placement errors, ensures the meshing accuracy of the inner and outer teeth of the coupling and the alignment accuracy of the flange holes, reduces the reliance on complex algorithm correction, and ultimately achieves high-precision automated assembly. The assembly time for a single part does not exceed five minutes, which is 400% more efficient than manual assembly, and the assembly consistency meets automotive-grade standards (ISO / TS16949).

[0036] Please refer to the following: Figure 6 and Figure 7 , Figure 6 This is a schematic diagram of the inner hub gear centering component of the high-precision gripping and positioning disk structure of the gearbox coupling of this utility model. Figure 7This is a cross-sectional view of the inner hub gear centering assembly of the high-precision gripping positioning disk structure of the gearbox coupling of this utility model. In one embodiment, the inner hub gear centering assembly 5 includes a positioning block 51 and a sliding mechanism. One end of the positioning block 51 is a pointed end, and the other end is a flat end. The flat end of the positioning block 51 is disposed on the sliding mechanism, which is disposed on the positioning disk body 1 and is used to drive the positioning block 51 to move so that the pointed end of the positioning block 51 is inserted into the tooth groove of the inner hub gear 9. The positioning block 51 is generally triangular prism in shape. The inner hub tooth 9 has an inner hub tooth marking line. When positioning the inner hub tooth 9 using the inner hub tooth alignment component 5, the inner hub tooth 9 is placed inside the inner hub tooth base 3. The inner hub tooth 9 is manually rotated until the inner hub tooth marking line is aligned with the positioning block 51. Then, the positioning block 51 is moved via a sliding mechanism until its tip inserts into the tooth groove of the inner hub tooth 9 and engages with the outer circular tooth surface of the inner hub tooth 9. This ensures that the adjusted inner hub tooth 9 does not shift circumferentially within the inner hub tooth base 3, thus completing the positioning of the inner hub tooth 9. In one embodiment, the positioning block 51 is made of PVC material. This design ensures that the positioning block 51 will not scratch the tooth surface of the inner hub tooth 9, preventing damage to the inner hub tooth 9.

[0037] In one embodiment, the sliding mechanism includes a mounting base 52, a guide cylinder 53, a first connecting rod 54, an arc-shaped plate 55, a column 56, and a pressing handle 57. The guide cylinder 53 is mounted on the mounting base 52 via a first bracket 59. The column 56 is located on one side of the guide cylinder 53 and mounted on the mounting base 52. One bottom end of the pressing handle 57 is hinged to the column 56, and the other bottom end of the pressing handle 57 is hinged to one end of the arc-shaped plate 55. The pressing handle 57 is provided with a clamping groove 58 that is interference-fitted with the arc-shaped plate 55. The number of first connecting rods 54 is set to multiple, and the length of each first connecting rod 54 is different. Multiple first connecting rods 54 can be selectively sleeved in the guide cylinder 53. One end of the first connecting rod 54 is detachably connected to the flat end of the positioning block 51, and the other end of the first connecting rod 54 is detachably connected to the end of the arc-shaped plate 55 away from the pressing handle 57. When the pressing handle 57 is pressed down, the arc-shaped plate 55 can be inserted into the clamping groove 58. Select a first connecting rod 54 of appropriate length according to the distance the positioning block 51 needs to move. Fit the selected first connecting rod 54 into the guide cylinder 53, and detachably connect one end of the first connecting rod 54 to the flat end of the positioning block 51. Detachably connect the other end of the first connecting rod 54 to the end of the arc plate 55 away from the pressing handle 57, thus completing the assembly of the sliding mechanism. The first connecting rod 54, guide cylinder 53, first bracket 59, pressing handle 57, and column 56 constitute a push-pull quick clamp. To facilitate the installation of the first connecting rod 54, in one embodiment, a threaded rod is provided on the flat end of the positioning block 51, one end of the first connecting rod 54 has a threaded hole for threaded connection with the threaded rod, and the other end of the first connecting rod 54 is bolted to the arc plate 55. When the inner hub tooth marking line and the positioning block 51 are on the same straight line, by pressing down the pressing handle 57, the pressing handle 57 pushes the first connecting rod 54 towards the inner hub tooth 9 through the arc plate 55, thereby causing the tip of the positioning block 51 to be inserted into the groove of the inner hub tooth 9. When the pressing handle 57 moves down to the position of the arc plate 55, the arc segment of the arc plate 55 will be inserted into the clamping groove 58 of the pressing handle 57, thereby locking the position of the arc plate 55, that is, locking the position of the first connecting rod 54 and the positioning block 51, ensuring that the adjusted inner hub tooth 9 does not shift within the inner hub tooth base 3, thus completing the positioning of the inner hub tooth 9.

[0038] In one embodiment, the number of positioning blocks 51 is set to multiple, and the multiple positioning blocks 51 have different sizes. Each positioning block 51 can be selectively arranged on the sliding mechanism. Designing multiple positioning blocks 51 of different sizes can be compatible with couplings of different specifications. The positioning block 51 of the appropriate size can be selected according to the coupling specification, and the replacement time does not exceed three minutes.

[0039] Please refer to the following: Figure 5 , Figure 5This is a schematic diagram of the sleeve centering assembly of the high-precision gripping and positioning disk structure of the gearbox coupling of this utility model. In one embodiment, the sleeve centering assembly 4 includes a centering fixture 42 and two centering positioning pins 41. The two centering positioning pins 41 are symmetrically arranged on both sides of the sleeve base 2 and are mounted on the positioning disk body 1. The centering fixture 42 includes a ring 421 and a cross plate. The cross plate includes a first end 422, a second end 423, a third end 424, and a fourth end 425. The first end 422, the second end 423, the third end 424, and the fourth end 425 are respectively connected to the ring 421 through a second connecting rod 427. The first end 422 and the third end 424 are provided with positioning holes 426 for the centering positioning pins 41 to pass through. Positioning rods 428 are respectively provided on the inner sidewall of the ring 421 at the middle position between the first end 422 and the second end 423 and at the middle position between the third end 424 and the fourth end 425. The sleeve 8 has an outer wall marking line. When positioning the sleeve 8 using the sleeve centering assembly 4, the sleeve 8 is placed inside the ring 421, ensuring that a positioning rod 428 is aligned with the outer wall marking line of the sleeve 8. Then, the sleeve 8 and the centering fixture 42 are placed horizontally on the sleeve base 2, and the two centering positioning pins 41 are inserted into the positioning holes 426 at the first end 422 and the third end 424, respectively, to complete the positioning of the sleeve 8. Furthermore, the outer wall marking line of the sleeve 8 forms a 38-degree angle (tolerance 0.5 degrees) with the line connecting the axes of the two centering positioning pins 41.

[0040] In one embodiment, the centering positioning pin 41 is mounted on the positioning plate body 1 via a second bracket 43. This arrangement allows for adjustment of the height of the centering positioning pin 41 to facilitate engagement with the positioning holes 426 at the first end 422 and the third end 424 of the cross plate.

[0041] In one embodiment, the positioning disk body 1 has a first groove for placing the sleeve base 2 and a second groove for placing the inner hub gear base 3. The bottom of the first and second grooves has through holes. The sleeve base 2 is installed in the first groove, and the inner hub gear base 3 is installed in the second groove. The first groove can be located in the middle of the positioning disk body 1, and the second groove is located to the left of the first groove, facilitating the installation of the sleeve base 2 and the inner hub gear base 3. The sleeve base 2 and the inner hub gear base 3 are generally annular, with a support plate at the bottom supporting the sleeve 8 or the inner hub gear 9. The sleeve base 2 and the inner hub gear base 3 can be formed from aluminum alloy sheet to reduce the overall weight. In one embodiment, the positioning disk body 1 includes a base plate and multiple support feet located at the bottom of the base plate.

[0042] In one embodiment, the positioning disk body 1 is provided with a QR code tray, and the QR code tray is provided with a magnetic fixing component. A QR code nameplate with a unique coupling code can be placed on the QR code tray and magnetically fixed by the magnetic fixing component.

[0043] The following is a brief description of the collaborative operation process between the high-precision gripping and positioning disk structure of the gearbox coupling of this utility model and a six-axis robot:

[0044] The positioning disk structure is installed on the robot workbench. The inner hub tooth 9 is placed in the inner hub tooth base 3. The inner hub tooth 9 is manually rotated so that the inner hub tooth marking line is on the same straight line as the positioning block 51. Then, the positioning block 51 is moved by the sliding mechanism so that the positioning block 51 is inserted into the tooth groove of the inner hub tooth 9 and fits against the outer circular tooth surface of the inner hub tooth 9. This ensures that the adjusted inner hub tooth 9 does not shift within the inner hub tooth base 3, thus completing the positioning of the inner hub tooth 9.

[0045] Place the sleeve 8 into the ring 421, ensuring that the positioning rod 428 is aligned with the marking line on the outer wall of the sleeve 8. Then, place the sleeve 8 and the centering fixture 42 horizontally on the sleeve base 2, and insert the two centering positioning pins 41 into the positioning holes 426 at the first end 422 and the third end 424 respectively to complete the positioning of the sleeve 8. At this time, the marking line on the outer wall of the sleeve 8 and the line connecting the axes of the two centering positioning pins 41 form a 38-degree angle (tolerance 0.5 degrees). The clamp assembly 7 can be an existing latch-type clamp, such as the Jiagang CH-40323_ASM latch-type clamp. Press the clamp assembly 7 down to clamp the sleeve 8 onto the sleeve base 2, and then remove the centering fixture 42.

[0046] Place the QR code nameplate with the unique code of the coupling on the QR code tray and fix it magnetically with the magnetic fixing component to ensure that the scanner can read it.

[0047] The six-axis robot performs gripping, alignment, and assembly actions based on the coordinate data of the inner hub gear 9 and the sleeve 8, as well as the QR code information. The specific process is as follows: The robot gripper grasps the inner hub gear 9. Based on the calibration data of the inner hub gear marking line and the positioning block 51, the robot rotates the inner hub gear 9 at a preset angle (38 degrees) and embeds it into the sleeve 8, aligning the inner hub gear marking line on the inner hub gear 9 with the outer wall marking line on the sleeve 8. Then, guided by 2D vision, the robot places the bolts from the bolt positioning bracket 6 into the bolt holes and tightens them. After locking the sleeve 8, the robot switches its vision system to scan the QR code, binding the assembly data to the MES system. The robot then transfers the assembled coupling to the next workstation.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A high-precision gripping and positioning disc structure for a gearbox coupling, characterized in that, include: The positioning disk body is provided with a sleeve base for placing the sleeve and an inner hub tooth base for placing the inner hub tooth. A sleeve alignment assembly is disposed on the positioning plate body and is used to position the sleeve on the sleeve base; An inner hub tooth alignment assembly is disposed on the positioning disk body and is used to position the inner hub teeth on the inner hub tooth base. A bolt positioning frame is mounted on the main body of the positioning plate and has multiple slots for placing bolts. A clamping assembly is disposed on the positioning disk body and is used to press the sleeve onto the sleeve base.

2. The high-precision gripping and positioning disk structure for gearbox couplings according to claim 1, characterized in that, The inner hub tooth centering assembly includes a positioning block and a sliding mechanism. One end of the positioning block is a pointed end and the other end is a flat end. The flat end of the positioning block is disposed on the sliding mechanism, which is disposed on the positioning disk body and is used to drive the positioning block to move so that the pointed end of the positioning block is inserted into the tooth groove of the inner hub tooth.

3. The high-precision gripping and positioning disk structure for gearbox couplings according to claim 2, characterized in that, The sliding mechanism includes a mounting base, a guide cylinder, a first connecting rod, an arc-shaped plate, a column, and a pressing handle. The guide cylinder is mounted on the mounting base via a first bracket. The column is located on one side of the guide cylinder and mounted on the mounting base. One bottom end of the pressing handle is hinged to the column, and the other bottom end of the pressing handle is hinged to one end of the arc-shaped plate. The pressing handle has a clamping groove that is interference-fitted with the arc-shaped plate. The number of the first connecting rods is set to multiple, and each first connecting rod has a different length. Multiple first connecting rods can be selectively fitted into the guide cylinder. One end of the first connecting rod is detachably connected to the flat end of the positioning block, and the other end of the first connecting rod is detachably connected to the end of the arc-shaped plate away from the pressing handle. When the pressing handle is pressed down, the arc-shaped plate can be inserted into the clamping groove.

4. The high-precision gripping and positioning disk structure for gearbox couplings according to claim 2, characterized in that, The number of positioning blocks is set to multiple, and the multiple positioning blocks have different sizes. Each positioning block can be selectively set on the sliding mechanism.

5. The high-precision gripping and positioning disk structure for gearbox couplings according to claim 2, characterized in that, The positioning block is made of PVC material.

6. The high-precision gripping and positioning disk structure for gearbox couplings according to claim 1, characterized in that, The sleeve centering assembly includes a centering fixture and two centering positioning pins. The two centering positioning pins are symmetrically arranged on both sides of the sleeve base and are located on the positioning disc body. The centering fixture includes a ring and a cross plate. The cross plate includes a first end, a second end, a third end, and a fourth end. The first end, the second end, the third end, and the fourth end are respectively connected to the ring through a second connecting rod. The first end and the third end are provided with positioning holes for the centering positioning pins to pass through. Positioning rods are respectively provided on the inner sidewall of the ring at the middle position between the first end and the second end and at the middle position between the third end and the fourth end.

7. The high-precision gripping and positioning disk structure for gearbox couplings according to claim 6, characterized in that, The centering pin is mounted on the positioning plate body via a second bracket.

8. The high-precision gripping and positioning disk structure for gearbox couplings according to claim 1, characterized in that, The positioning disk body is provided with a first groove for placing the sleeve base and a second groove for placing the inner hub gear base. The bottom of the first groove and the second groove are provided with through holes. The sleeve base is installed on the first groove and the inner hub gear base is installed on the second groove.

9. The high-precision gripping and positioning disk structure for gearbox couplings according to claim 1, characterized in that, The positioning disk body is equipped with a QR code tray, and the QR code tray is equipped with a magnetic fixing component.

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