A welding fixture for a clutch fork shaft
By designing a support sleeve, a clamping top rod, and a motor-driven welding fixture, the problem of unstable clamping caused by different shapes of the shift fork shaft was solved, achieving stable clamping of the shift fork shaft and improving welding accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING YAOHUI MACHINERY CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional clamping methods are unstable due to the different shapes of the fork shafts, resulting in offset or wobbling, which affects the welding operation.
A welding fixture comprising a support sleeve, a clamping top rod, a support spring, a drive motor, a threaded rod, and a threaded frame is designed. The fixture achieves stable clamping of the shift fork shaft through the support sleeve, the extension and retraction of the clamping top rod, the movement of the threaded rod driven by the motor, and the fixing with bolts.
It achieves automatic adjustment based on the shape of the fork shaft, ensuring stable clamping, avoiding deviation, and improving welding accuracy and efficiency.
Smart Images

Figure CN224373219U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of clutch shift fork shaft welding technology, and in particular to a welding fixture for clutch shift fork shafts. Background Technology
[0002] The clutch shift fork shaft is a crucial component of an automotive clutch system, primarily used to transmit and convert the driver's pedal force, controlling the engagement and disengagement of the clutch. It is typically made of high-strength steel, possessing wear-resistant and corrosion-resistant properties. The shift fork shaft uses a lever principle to convert the linear motion of the pedal into the rotational motion of the shift fork, thereby enabling clutch operation. Its design precision directly affects the smoothness of gear shifting and the service life of the clutch, making it one of the key components ensuring the reliability of vehicle power transmission.
[0003] In the existing technology, the position of the fork shaft needs to be fixed during the welding process, so a clamp is required to hold and fix it. However, the traditional clamping method is not suitable for different shapes of the fork shaft, resulting in unstable clamping, displacement or shaking, which affects the clamping force and the welding operation. Utility Model Content
[0004] The purpose of this utility model is to provide a welding fixture for a clutch shift fork shaft, which solves the problem that traditional clamping methods are not suitable for different shapes of the shift fork shaft, resulting in unstable clamping, displacement or shaking, which affects the clamping force and welding operation.
[0005] To achieve the above objectives, a welding fixture for a clutch shift fork shaft is provided, comprising: a platform; a fixed box is fixedly connected to the middle of one side of the upper surface of the platform; a buffer groove is provided inside the fixed box; a clamping top rod is inserted into the buffer groove; a support spring is fixedly connected inside the buffer groove; the support spring and the clamping top rod are fixedly connected; sliding grooves are provided on both sides of the upper surface of the platform; a slider is slidably fitted inside the sliding groove; a moving plate is fixedly connected to the top of the slider; support sleeves are fixedly connected to the four corners of the bottom end of the platform; a second motor is fixedly connected to the top of the inside of the support sleeve; a lead screw is fixedly connected to the drive end of the second motor; a telescopic block is threadedly connected to the outside of the lead screw; and the telescopic block and the support sleeve are fitted together.
[0006] As a preferred embodiment of the present invention, a threaded rod is rotatably connected to the center of the inner surface of the platform, and a second bevel gear is fixedly connected to one end of the threaded rod.
[0007] As a preferred embodiment of the present invention, the first bevel gear meshes with one side of the second bevel gear, and a drive motor is fixedly connected to one side of the bottom center of the platform, with the drive end of the drive motor being fixedly connected to the first bevel gear.
[0008] As a preferred embodiment of the present invention, a drive housing is fitted around the first bevel gear and the second bevel gear.
[0009] As a preferred embodiment of the present invention, a pull rod runs through the interior of the movable plate, and a bolt is threadedly connected to the center of the top of the movable plate, with the bolt and the pull rod engaging in abutment.
[0010] As a preferred embodiment of the present invention, one end of the clamping top rod abuts against the pull fork shaft.
[0011] As a preferred embodiment of the present invention, one end of the pull rod is fixedly connected to a clamping push plate.
[0012] As a preferred embodiment of the present invention, the threaded rod is threadedly connected to a threaded bracket at its center, and the threaded bracket and the slider are fixedly connected.
[0013] The above-mentioned solution has the following beneficial effects:
[0014] 1. This utility model is provided with: a support sleeve, a fork shaft, a clamping rod, and a support spring. The support sleeve supports the ground, and then the fork shaft to be welded is placed on the upper surface of the table. The different shapes of the fork shaft can extend and retract to abut the clamping rod. At this time, the support spring is elastically compressed and can abut and fix according to different shapes.
[0015] 2. This utility model is equipped with a drive motor, a threaded rod, a threaded frame, and bolts. The drive motor drives the first bevel gear to rotate and mesh with the second bevel gear, which in turn drives the threaded rod to rotate and engage with the threaded frame, thus achieving threaded movement. The slider is moved by being fixedly connected to the top movable plate, allowing the slider to move relative to the movable plate. This facilitates the clamping of the fork shaft. After clamping, the slider can be extended and slid by the extension and retraction of the pull rod to engage with the fork shaft again. After clamping, the bolts can be rotated to fix the slider against the pull rod, thus maintaining the position limit and facilitating subsequent welding operations.
[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0018] Figure 1 This is a three-dimensional structural diagram of a welding fixture for a clutch shift fork shaft according to the present invention.
[0019] Figure 2This is a top view of a welding fixture for a clutch shift fork shaft according to the present invention.
[0020] Figure 3 This is a three-dimensional structural diagram of the threaded rod and threaded bracket of the welding fixture for a clutch shift fork shaft according to this utility model.
[0021] Figure 4 This is a side view of the cross-section of the support sleeve of the welding fixture for a clutch shift fork shaft according to this utility model.
[0022] Legend:
[0023] The components are as follows: 1. Tabletop; 2. Movable plate; 3. Fixed box; 4. Clamping rod; 5. Slide groove; 6. Drive box; 7. Pull rod; 8. Clamping push plate; 9. Bolt; 10. Support spring; 11. Buffer groove; 12. Shift fork shaft; 13. Threaded rod; 14. Threaded frame; 15. Slider; 16. Drive motor; 17. First bevel gear; 18. Second bevel gear; 19. Second motor; 20. Lead screw; 21. Support sleeve; 22. Telescopic block. Detailed Implementation
[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0025] Reference Figure 1-4This utility model discloses a welding fixture for a clutch shift fork shaft, comprising: a platform 1, a fixed box 3 fixedly connected to the middle of one side of the upper surface of the platform 1, a buffer groove 11 inside the fixed box 3, a clamping rod 4 inserted into the buffer groove 11, and a support spring 10 fixedly connected inside the buffer groove 11. The clamping rod 4 can be extended and retracted to engage with the shift fork shaft 12 by varying its shape. The support spring 10 is elastically compressed, allowing for engagement and fixation according to different shapes. The support spring 10 and the clamping rod 4 are fixedly connected. Sliding grooves 5 are provided on both sides of the upper surface of the platform 1, and sliders 15 are slidably fitted inside the sliding grooves 5. 5. The slider 15 is fixedly connected to the top movable plate 2, which allows the slider 15 to move the position of the movable plate 2, so as to facilitate the clamping of the fork shaft 12. The top of the slider 15 is fixedly connected to the movable plate 2. The bottom four corners of the platform 1 are fixedly connected to the support sleeves 21, which support the ground. Then, the fork shaft 12 to be welded is placed on the upper surface of the platform 1. The top of the inside of the support sleeve 21 is fixedly connected to the second motor 19. The drive end of the second motor 19 is fixedly connected to the lead screw 20. The outside of the lead screw 20 is threadedly connected to the telescopic block 22. The telescopic block 22 and the support sleeve 21 are fitted together.
[0026] A threaded rod 13 is rotatably connected inside the center of the platform 1. A second bevel gear 18 is fixedly connected to one end of the threaded rod 13. A first bevel gear 17 meshes with one side of the second bevel gear 18. A drive motor 16 is fixedly connected to one side of the bottom center of the platform 1. The drive motor 16 drives the first bevel gear 17 to rotate and mesh with the second bevel gear 18, thereby driving the threaded rod 13 to rotate and engage with the threaded frame 14, thus achieving threaded movement. The drive end of the drive motor 16 is fixedly connected to the first bevel gear 17. A drive box 6 is fitted around the first bevel gear 17 and the second bevel gear 18. The moving plate 2... A pull rod 7 runs through the interior. Through the extension and sliding of the pull rod 7, it again comes into contact with the fork shaft 12. After the contact is clamped, the bolt 9 rotates. The top center of the moving plate 2 is threaded with a bolt 9. By rotating the bolt 9, it can fix the contact with the pull rod 7, thereby maintaining the position limit and facilitating subsequent welding operations. The bolt 9 and the pull rod 7 are in contact and cooperate. One end of the clamping top rod 4 is in contact with the fork shaft 12. One end of the pull rod 7 is fixedly connected to the clamping push plate 8. The middle of the threaded rod 13 is threadedly connected to the threaded frame 14. The threaded frame 14 and the slider 15 are fixedly connected.
[0027] Working principle: In use, the support sleeve 21 first supports the ground. Then, the fork shaft 12 to be welded is placed on the upper surface of the table 1. The different shapes of the fork shaft 12 can extend and retract to engage the clamping rod 4. At this time, the support spring 10 is elastically compressed and can engage and fix according to different shapes. Then, the drive motor 16 is started, which drives the first bevel gear 17 to rotate and mesh with the second bevel gear 18, which drives the threaded rod 13 to rotate and engage with the threaded frame 14, thus realizing threaded movement. The slider 15 is moved and fixedly connected to the top moving plate 2, which can move the slider 15 to facilitate engagement and clamping of the fork shaft 12. After clamping, the extension and retraction of the pull rod 7 can engage the fork shaft 12 again. After engaging and clamping, the rotation of the bolt 9 can fix the bolt 7, thus maintaining the position limit and facilitating subsequent welding operations.
[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A welding fixture for a clutch shift fork shaft, comprising: The tabletop (1) is characterized in that a fixed box (3) is fixedly connected to the middle of one side of the upper surface of the tabletop (1), a buffer groove (11) is provided inside the fixed box (3), a clamping top rod (4) is inserted into the buffer groove (11), a support spring (10) is fixedly connected inside the buffer groove (11), the support spring (10) and the clamping top rod (4) are fixedly connected, a sliding groove (5) is provided on both sides of the upper surface of the tabletop (1), a slider (15) is slidably fitted inside the sliding groove (5), a moving plate (2) is fixedly connected to the top of the slider (15), a support sleeve (21) is fixedly connected to the four corners of the bottom end of the tabletop (1), a second motor (19) is fixedly connected to the top of the support sleeve (21), a lead screw (20) is fixedly connected to the drive end of the second motor (19), a telescopic block (22) is threadedly connected to the outside of the lead screw (20), and the telescopic block (22) and the support sleeve (21) are fitted together.
2. The welding fixture for a clutch shift fork shaft according to claim 1, characterized in that, A threaded rod (13) is rotatably connected inside the platform (1), and a second bevel gear (18) is fixedly connected to one end of the threaded rod (13).
3. The welding fixture for a clutch shift fork shaft according to claim 2, characterized in that, The first bevel gear (17) meshes with one side of the second bevel gear (18), and a drive motor (16) is fixedly connected to one side of the bottom center of the platform (1). The drive end of the drive motor (16) is fixedly connected to the first bevel gear (17).
4. The welding fixture for a clutch shift fork shaft according to claim 3, characterized in that, The first bevel gear (17) and the second bevel gear (18) are fitted with a drive box (6).
5. The welding fixture for a clutch shift fork shaft according to claim 1, characterized in that, A pull rod (7) runs through the interior of the movable plate (2), and a bolt (9) is threadedly connected to the top center of the movable plate (2). The bolt (9) and the pull rod (7) are in contact with each other.
6. The welding fixture for a clutch shift fork shaft according to claim 1, characterized in that, One end of the clamping rod (4) abuts against the fork shaft (12).
7. The welding fixture for a clutch shift fork shaft according to claim 5, characterized in that, One end of the pull rod (7) is fixedly connected to a clamping push plate (8).
8. The welding fixture for a clutch shift fork shaft according to claim 2, characterized in that, The threaded rod (13) is threadedly connected to a threaded bracket (14) at its middle part, and the threaded bracket (14) and the slider (15) are fixedly connected.