A clamping mechanism for shift fork production

CN224323006UActive Publication Date: 2026-06-05湖南正蓉机械制造有限公司

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
湖南正蓉机械制造有限公司
Filing Date
2025-06-24
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing clamping devices are difficult to adapt to the tilt state of the shift fork, resulting in loosening, vibration or positioning errors, and poor size compatibility, making it difficult to quickly adapt to the stable clamping of workpieces of different specifications.

Method used

A clamping mechanism including a clamping plate, a clamping seat, a connecting rod, and a motor-driven mechanism was designed. Through the motor-driven gear meshing and spline shaft transmission, the mechanism can automatically adjust and stably clamp the shift fork, adapting to shift fork workpieces of different sizes and angles.

Benefits of technology

It achieves efficient and stable clamping of the shift fork, adapts to automatic adjustment of workpieces of different specifications, and improves positioning accuracy and cycle time in the production process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of clamping mechanisms for fork production, it is related to fork production technical field, including first fixed pipe, the first fixed pipe inside sliding is equipped with sliding rod, the sliding rod is equipped with clamping plate by connecting rod hinged, the second fixed pipe is symmetrically connected on the adjusting pipe, the second fixed pipe both ends are equipped with clamping component, the adjusting pipe upper end is fixedly equipped with hinged seat, the guide slot rod inside is equipped with adjusting component.The utility model is by being equipped with several clamping plates, so that it is convenient to fix the one end of fork body, by clamping seat one side setting rotating block and clamping block, so that it is convenient to clamp and fix the other end of fork body, by hinged seat and mounting rod hinged, so that it is convenient to carry out angle adjustment, by setting adjusting component so that height can be adjusted.
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Description

Technical Field

[0001] This utility model relates to the field of shift fork manufacturing technology, specifically a clamping mechanism for shift fork manufacturing. Background Technology

[0002] As a core actuator in transmission systems such as gearboxes and transmissions, shift forks are widely used in automobiles, construction machinery, and various industrial equipment. Their main function is to shift power by engaging synchronizers or sliding gears during gear changes. In the mass production of shift forks, multiple precision machining, heat treatment, surface treatment, and final assembly processes are required. Efficiently and accurately transferring shift fork workpieces between different workstations or equipment is crucial for ensuring production cycle time and product quality. This process relies on reliable clamping mechanisms for holding and securing the workpiece.

[0003] One of the most significant characteristics of shift fork structures is that their working ends are typically designed in a cylindrical shape to engage with shift levers or synchronizer sleeves. This structural feature causes the main body of the shift fork to naturally tilt when placed horizontally due to the offset of the support point at the cylindrical end. Existing common clamping components struggle to adapt to changes in tilt angle during use, easily leading to workpiece loosening, vibration, or positioning errors during machining or transfer. Secondly, they suffer from poor dimensional compatibility. Key dimensions such as the outer diameter of the shift fork cylinder, the width of the fork arm, and the overall length vary considerably depending on application requirements. Traditional clamps lack convenient and effective dimensional adjustment mechanisms, making it difficult to quickly adapt to the stable clamping of workpieces of different specifications.

[0004] Based on this, a clamping mechanism for producing shift forks is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this utility model is to provide a clamping mechanism for producing shift forks, so as to solve the problem in the prior art of inconvenience in clamping shift forks of different sizes.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A clamping mechanism for producing shift forks includes a first fixed tube, a sliding rod slidably disposed inside the first fixed tube, a limiting seat fixedly disposed at the bottom end of the sliding rod, a plurality of guide sliding rods slidably disposed at the bottom end of the limiting seat, the guide sliding rods being fixedly disposed inside the bottom end of the first fixed tube, a plurality of connecting rods hinged to the sliding rods, a clamping plate hinged to the other end of each connecting rod, a limiting sliding rod fixedly disposed on one side of each clamping plate, the limiting sliding rods being slidably disposed in sliding holes on the outside of the first fixed tube, a first fixed box fixedly disposed at the upper end of the first fixed tube, a third fixed tube fixedly disposed on one side of the first fixed box, an adjusting tube sleeved on the third fixed tube, a second fixed tube symmetrically connected to the adjusting tube, clamping components for clamping the end of the shift fork body being disposed at both ends of the second fixed tube, a hinge seat fixedly disposed at the upper end of the adjusting tube, an mounting rod hinged to the upper end of the hinge seat, the mounting rod being slidably disposed inside a guide groove rod, an adjusting component for adjusting the working height of the mounting rod being disposed inside the guide groove rod.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0009] In one alternative: a first fixing plate is fixedly provided at one end of the sliding rod, a first rack is fixedly provided on the first fixing plate, a first gear is meshed on the first rack, both ends of the first gear are rotatably provided in the rotating holes inside the first fixing box, one end of the rotating shaft of the first gear is fixedly connected to the output end of the first motor, and the first motor is fixedly provided on one side of the first fixing box.

[0010] In one alternative: a first gear is fixedly mounted on a rotating shaft on one side of the hinge seat, a second gear is meshed on the first gear, the second gear is fixedly mounted on the output end of the second motor, and the second motor is fixedly mounted in a mounting groove on one side of the mounting rod.

[0011] In one alternative embodiment: the clamping component includes two symmetrically arranged clamping seats. A rotating block is rotatably provided on one side of each clamping seat, and mounting grooves are symmetrically provided on one side of each rotating block. Clamping blocks are rotatably provided in each mounting groove. Anti-slip stripes are provided on one side of each clamping block. A fixing rod is fixedly provided at the upper end of each clamping seat, and an adjusting rod is fixedly provided at one end of the fixing rod. The adjusting rod is slidably disposed in a sliding hole at one end of a sliding seat. The adjusting rod is provided with several first adjusting holes. The adjusting rod is fixedly connected to the sliding seat by screws. The sliding seat is slidably disposed inside a second fixing tube. A linkage component for driving the clamping seats to move is provided inside the adjusting tube.

[0012] In one alternative embodiment: the linkage component includes a second rack, and a second rack is fixedly provided on one side of the sliding seat. The two second racks are arranged in a circular array, and each of the two second racks meshes with a second gear. One end of the second gear has a rotating shaft rotatably disposed in a rotating hole at one end of the adjusting tube. An internal spline shaft is fixedly provided on the rotating shaft at the other end of the adjusting tube. An external spline shaft is slidably disposed inside the internal spline shaft. The external spline shaft is fixedly disposed on one end of a fixed shaft. The other end of the fixed shaft is fixedly disposed on the rotating shaft at one end of the first gear. A rotating plate is rotatably disposed on the rotating shaft at one end of the second gear, and the rotating plate is fixedly disposed inside the adjusting tube.

[0013] In one alternative embodiment: the adjusting component includes a threaded rod, one end of the mounting rod has a threaded hole, the threaded rod is fitted inside the threaded hole, the threaded rod is rotatably disposed in the rotating hole inside the guide groove rod, one end of the threaded rod is fixedly connected to the output end of the third motor, the third motor is fixedly disposed on the upper end of the guide groove rod, the third motor is electrically connected to the control component, the control component is fixedly disposed on one side of the guide groove rod, and one end of the mounting rod is slidably provided with a fixed slide rod, the fixed slide rod is fixedly disposed inside the guide groove rod.

[0014] In one alternative: the third fixing tube is provided with a plurality of second adjustment holes.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention utilizes several clamping plates to facilitate the fixing of one end of the shift fork body. A clamping seat with a rotating block and a clamping block on one side facilitates the clamping and fixing of the other end of the shift fork body. The rotating block and clamping seat are rotatably connected, allowing for automatic adjustment based on the shape of the shift fork body end. Furthermore, the inclusion of a fixed shaft, an external spline shaft, and an internal spline shaft enables the second rack and gear to move simultaneously when the first motor drives the first gear, increasing the stability of the clamping mechanism. A hinged joint with the mounting rod facilitates adjustment of the working angles of the first fixed tube and the clamping seat. An adjustment component allows for adjustment of the working heights of the first fixed tube and the clamping seat, thereby enhancing the practicality of the clamping mechanism for shift fork production. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the installation of the threaded rod of this utility model.

[0019] Figure 3This is a schematic diagram showing the connection between the external spline shaft and the internal spline shaft of this utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of the first fixed tube of this utility model.

[0021] Figure 5 This is a schematic diagram of the internal structure of the second fixed tube of this utility model.

[0022] Figure 6 This is a schematic diagram of the clamping base, rotating block, and clamping block structure of this utility model.

[0023] Figure reference numerals: 11 First fixed tube, 12 Clamping plate, 13 Connecting rod, 14 Sliding rod, 15 Limiting seat, 16 First fixed box, 17 First rack, 18 First gear, 19 Clamping seat, 20 Rotating block, 21 Clamping block, 22 Adjusting rod, 23 Sliding seat, 24 Second fixed tube, 25 Second rack, 26 Second gear, 27 Third fixed tube, 28 Adjusting tube, 29 Fixed shaft, 30 External spline shaft, 31 Internal spline shaft, 32 First motor, 33 Hinge seat, 34 Mounting rod, 35 Second motor, 36 Guide groove rod, 37 Threaded rod, 38 Third motor, 39 Control component, 40 Shift fork body. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] In one embodiment, such as Figures 1-6As shown, a clamping mechanism for producing shift forks includes a first fixed tube 11. A sliding rod 14 is slidably disposed inside the first fixed tube 11. A limiting seat 15 is fixedly disposed at the bottom end of the sliding rod 14. A plurality of guide sliding rods are slidably disposed at the bottom end of the limiting seat 15. The guide sliding rods are fixedly disposed inside the bottom end of the first fixed tube 11. A plurality of connecting rods 13 are hinged to the sliding rod 14. A clamping plate 12 is hinged to the other end of each connecting rod 13. A limiting sliding rod is fixedly disposed on one side of each clamping plate 12. The limiting sliding rod is slidably disposed in a sliding hole on the outside of the first fixed tube 11. A first fixed box 16 is fixedly disposed at the upper end of the first fixed tube 11. A first fixed box 16 is fixedly disposed on one side of the first fixed box 16. A third fixing tube 27 is fixedly provided, and an adjusting tube 28 is sleeved on the third fixing tube 27. A second fixing tube 24 is symmetrically connected to the adjusting tube 28. The two ends of the second fixing tube 24 are provided with clamping components for clamping the end of the shift fork body 40. A hinge seat 33 is fixedly provided at the upper end of the adjusting tube 28. An installation rod 34 is hinged at the upper end of the hinge seat 33. The installation rod 34 is slidably disposed inside the guide groove rod 36. An adjusting component is provided inside the guide groove rod 36 for adjusting the working height of the installation rod 34. The clamping components facilitate clamping and fixing the other end of the shift fork body 40, and the adjusting component facilitates adjusting the working height of the installation rod 34.

[0026] One end of the sliding rod 14 is fixedly provided with a first fixing plate, and a first rack 17 is fixedly provided on the first fixing plate. A first gear 18 is meshed on the first rack 17. Both ends of the first gear 18 are rotatably disposed in the rotating holes inside the first fixing box 16. One end of the rotating shaft of the first gear 18 is fixedly connected to the output end of the first motor 32. The first motor 32 is fixedly disposed on one side of the first fixing box 16. In use, when it is necessary to clamp the shift fork body 40, one end of the first fixing tube 11 is moved into the end through hole of the shift fork body 40. Then, the first motor 32 is started, and the output end of the first motor 32 drives the first gear 18 to rotate. The first gear 18 meshes with the first rack 17 and drives the sliding rod 14 to move. The sliding rod 14 slides inside the first fixing tube 11. The sliding rod 14 drives the clamping plate 12 to slide through the connecting rod 13, so that the outer side of the clamping plate 12 is in close contact with the inner side of the end through hole of the shift fork body 40, thereby fixing the shift fork body 40.

[0027] A first gear is fixedly mounted on a rotating shaft on one side of the hinge seat 33. A second gear meshes with the first gear. The second gear is fixedly mounted on the output end of the second motor 35. The second motor 35 is fixedly mounted in a mounting groove on one side of the mounting rod 34. In use, when it is necessary to adjust the working angle of the first fixed tube 11 and the adjusting tube 28, the second motor 35 is started. The output end of the second motor 35 drives the second gear to rotate. The second gear meshes with the first gear, thereby driving the hinge seat 33 to rotate. The hinge seat 33 drives the adjusting tube 28 to rotate, thereby adjusting the working angle of the first fixed tube 11.

[0028] The clamping component includes two symmetrically arranged clamping seats 19. A rotating block 20 is rotatably provided on one side of each clamping seat 19. A mounting groove is symmetrically provided on one side of each rotating block 20. A clamping block 21 is rotatably provided in each mounting groove. Anti-slip stripes are provided on one side of each clamping block 21. A fixing rod is fixedly provided at the upper end of each clamping seat 19. An adjusting rod 22 is fixedly provided at one end of the fixing rod. The adjusting rod 22 is slidably disposed in a sliding hole at one end of a sliding seat 23. The adjusting rod 22 is provided with several first adjusting holes. The adjusting rod 22 is fixedly connected to the sliding seat 23 by screws. The sliding seat 23 is slidably disposed inside a second fixing tube 24. A linkage component for moving the clamping seat 19 is provided inside the adjusting tube 24.

[0029] The linkage component includes a second rack 25. A second rack 25 is fixedly mounted on one side of the sliding seat 23. The two second racks 25 are arranged in a circular array. Each of the two second racks 25 meshes with a second gear 26. One end of the second gear 26 is rotatably mounted in a rotating hole at one end of the adjusting tube 28. An inner spline shaft 31 is fixedly mounted on the other end of the adjusting tube 28. An outer spline shaft 30 slides inside the inner spline shaft 31. The outer spline shaft 30 is fixedly mounted on one end of a fixed shaft 29. The other end of the fixed shaft 29 is fixedly mounted on a rotating shaft at one end of the first gear 18. A rotating plate is rotatably mounted on the rotating shaft at one end of the second gear 26. The rotating plate is fixedly mounted inside the adjusting tube 28. In use, when it is necessary to clamp the shift fork body 40, the first fixed tube 11 is inserted into the shift fork body. One end of the body 40 is inserted into the hole, and the clamping seat 19 moves to the other end of the shift fork body 40. Then, when the output end of the first motor 32 rotates, the first rack 17 and the first gear 18 cooperate to drive the clamping plate 12 to move. The clamping plate 12 clamps and fixes one end of the shift fork body 40. At the same time, when the first gear 18 rotates, it drives the fixed shaft 29 to rotate. The fixed shaft 29 drives the outer spline shaft 30 to rotate. The outer spline shaft 30 drives the second gear 26 to rotate through the inner spline shaft 31. The second gear 26 meshes with the two second racks 25, so that the second racks 25 drive the sliding seat 23 to slide inside the second fixed tube 24. The sliding seat 23 drives the clamping seat 19 to slide, so that the clamping seat 19 can clamp the other end of the shift fork body 40. At the same time, the clamping block 21 and the rotating block 20 can be automatically adjusted according to the shape of the end of the shift fork body 40.

[0030] The adjusting component includes a threaded rod 37. One end of the mounting rod 34 is provided with a threaded hole, and the threaded rod 37 is fitted inside the threaded hole. The threaded rod 37 is rotatably disposed in the rotating hole inside the guide groove rod 36. One end of the threaded rod 37 is fixedly connected to the output end of the third motor 38. The third motor 38 is fixedly disposed on the upper end of the guide groove rod 36. The third motor 38 is electrically connected to the control component 39, which is fixedly disposed on one side of the guide groove rod 36. One end of the mounting rod 34 is slidably provided with a fixed slide rod, which is fixedly disposed inside the guide groove rod 36. In use, when it is necessary to adjust the working height of the first fixed tube 11, the control component 39 controls the third motor 38 to start. The third motor 38 drives the threaded rod 37 to rotate. Under the action of the thread, the mounting rod 34 moves along the length direction of the guide groove rod 36, thereby driving the first fixed tube 11 and the clamping seat 19 to move.

[0031] The third fixing tube 27 is provided with several second adjustment holes, which facilitates the adjustment of the distance between the first fixing tube 11 and the clamping seat 19 during use.

[0032] The above embodiment discloses a clamping mechanism for shift fork production. When the shift fork body 40 needs to be clamped, one end of the first fixing tube 11 moves into the end hole of the shift fork body 40. Then, the first motor 32 is started. The output end of the first motor 32 drives the first gear 18 to rotate. The first gear 18 meshes with the first rack 17, driving the sliding rod 14 to move. The sliding rod 14 slides inside the first fixing tube 11. The sliding rod 14 drives the clamping plate 12 to slide via the connecting rod 13, so that the outer side of the clamping plate 12 is tightly against the inner side of the end hole of the shift fork body 40, thus fixing the shift fork body 40. Simultaneously, the clamping seat 19 moves to the other end of the shift fork body 40. Then, when the first motor 32 outputs... When the output end rotates, the first rack 17 and the first gear 18 cooperate to drive the clamping plate 12 to move. The clamping plate 12 clamps and fixes one end of the shift fork body 40. At the same time, when the first gear 18 rotates, it drives the fixed shaft 29 to rotate. The fixed shaft 29 drives the outer spline shaft 30 to rotate. The outer spline shaft 30 drives the second gear 26 to rotate through the inner spline shaft 31. The second gear 26 meshes with the two second racks 25, so that the second racks 25 drive the sliding seat 23 to slide inside the second fixed tube 24. The sliding seat 23 drives the clamping seat 19 to slide, so that the clamping seat 19 can clamp the other end of the shift fork body 40. At the same time, the clamping block 21 and the rotating block 20 can be automatically adjusted according to the shape of the end of the shift fork body 40.

[0033] When the working height of the first fixed tube 11 needs to be adjusted, the third motor 38 is started by the control component 39. The third motor 38 drives the threaded rod 37 to rotate. Under the action of the thread, the mounting rod 34 moves along the length of the guide groove rod 36, thereby driving the first fixed tube 11 and the clamping seat 19 to move. When the working angle of the first fixed tube 11 and the adjusting tube 28 needs to be adjusted, the second motor 35 is started. The output end of the second motor 35 drives the second gear to rotate. The second gear meshes with the first gear and drives the hinge seat 33 to rotate. The hinge seat 33 drives the adjusting tube 28 to rotate.

[0034] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A clamping mechanism for producing shift forks, comprising a first fixed tube (11), wherein a sliding rod (14) is slidably disposed inside the first fixed tube (11), a limiting seat (15) is fixedly disposed at the bottom end of the sliding rod (14), and a plurality of guide sliding rods are slidably disposed at the bottom end of the limiting seat (15), characterized in that, The guide slide rod is fixedly installed at the bottom of the first fixed tube (11). Several connecting rods (13) are hinged to the slide rod (14). A clamping plate (12) is hinged to the other end of each connecting rod (13). A limiting slide rod is fixedly installed on one side of each clamping plate (12). The limiting slide rod is slidably installed in the sliding hole on the outside of the first fixed tube (11). A first fixed box (16) is fixedly installed at the upper end of the first fixed tube (11). A third fixed tube (27) is fixedly installed on one side of the first fixed box (16). An adjusting tube (28) is fitted and installed. A second fixing tube (24) is symmetrically connected to the adjusting tube (28). The two ends of the second fixing tube (24) are provided with clamping components for clamping the end of the shift fork body (40). A hinge seat (33) is fixedly provided at the upper end of the adjusting tube (28). An installation rod (34) is hinged at the upper end of the hinge seat (33). The installation rod (34) is slidably disposed inside the guide groove rod (36). An adjusting component for adjusting the working height of the installation rod (34) is provided inside the guide groove rod (36).

2. The clamping mechanism for producing shift forks according to claim 1, characterized in that, One end of the sliding rod (14) is fixedly provided with a first fixing plate, and a first rack (17) is fixedly provided on the first fixing plate. A first gear (18) is meshed on the first rack (17). Both ends of the first gear (18) are rotatably provided in the rotating holes inside the first fixing box (16). One end of the rotating shaft of the first gear (18) is fixedly connected to the output end of the first motor (32). The first motor (32) is fixedly provided on one side of the first fixing box (16).

3. The clamping mechanism for producing shift forks according to claim 1, characterized in that, A first gear is fixedly mounted on the rotating shaft on one side of the hinge seat (33), and a second gear is meshed on the first gear. The second gear is fixedly mounted on the output end of the second motor (35), and the second motor (35) is fixedly mounted in the mounting groove on one side of the mounting rod (34).

4. The clamping mechanism for producing shift forks according to claim 2, characterized in that, The clamping component includes two symmetrically arranged clamping seats (19). A rotating block (20) is rotatably provided on one side of the clamping seat (19). A mounting groove is symmetrically provided on one side of the rotating block (20). A clamping block (21) is rotatably provided in each mounting groove. Anti-slip stripes are provided on one side of the clamping block (21). A fixing rod is fixedly provided at the upper end of the clamping seat (19). An adjusting rod (22) is fixedly provided at one end of the fixing rod. The adjusting rod (22) is slidably provided in a sliding hole at one end of the sliding seat (23). A plurality of first adjusting holes are provided on the adjusting rod (22). The adjusting rod (22) is fixedly connected to the sliding seat (23) by screws. The sliding seat (23) is slidably provided inside the second fixing tube (24). A linkage component for driving the clamping seat (19) to move is provided inside the adjusting tube (24).

5. A clamping mechanism for producing shift forks according to claim 4, characterized in that, The linkage component includes a second rack (25). The sliding seat (23) is fixedly provided with a second rack (25) on one side. The two second racks (25) are arranged in a circular array. The two second racks (25) mesh with a second gear (26). The rotating shaft of one end of the second gear (26) is rotatably disposed in the rotating hole of one end of the adjusting tube (28). The rotating shaft of the other end of the adjusting tube (28) is fixedly provided with an inner spline shaft (31). An outer spline shaft (30) is slidably disposed inside the inner spline shaft (31). The outer spline shaft (30) is fixedly disposed at one end of the fixed shaft (29). The other end of the fixed shaft (29) is fixedly disposed on the rotating shaft of one end of the first gear (18). A rotating plate is rotatably disposed on the rotating shaft of one end of the second gear (26). The rotating plate is fixedly disposed inside the adjusting tube (28).

6. The clamping mechanism for producing shift forks according to claim 1, characterized in that, The adjusting component includes a threaded rod (37). One end of the mounting rod (34) is provided with a threaded hole, and the threaded rod (37) is fitted inside the threaded hole. The threaded rod (37) is rotatably disposed in the rotating hole inside the guide groove rod (36). One end of the threaded rod (37) is fixedly connected to the output end of the third motor (38). The third motor (38) is fixedly disposed on the upper end of the guide groove rod (36). The third motor (38) is electrically connected to the control component (39). The control component (39) is fixedly disposed on one side of the guide groove rod (36). One end of the mounting rod (34) is slidably provided with a fixed slide rod, and the fixed slide rod is fixedly disposed inside the guide groove rod (36).

7. The clamping mechanism for producing shift forks according to claim 1, characterized in that, The third fixed tube (27) is provided with several second adjustment holes.