An adjustable shift fork positioning and clamping structure

Abstract

This utility model discloses an adjustable shift fork positioning and clamping structure, relating to the field of shift fork processing technology. It includes a support base with a placement groove at its upper end. A fixed shaft is fixedly mounted on one side of the support base, and several fixed rods are arrayed on the fixed shaft. The other ends of the fixed rods are all fixedly mounted inside a toothed ring, which is rotatably mounted inside a fixed housing. A positioning tube is fixedly mounted in the placement groove, and a positioning mechanism is located inside the positioning tube. A clamping mechanism is also provided in the placement groove. This utility model facilitates the positioning of the shift fork body by setting a positioning tube in the placement groove at the upper end of the support base and symmetrically arranging positioning rods on the outside of the positioning tube. The clamping mechanism facilitates the clamping and fixing of the shift fork body. Furthermore, the fixed shaft at the end of the support base, coupled with the toothed ring driving the support base to rotate, facilitates multi-angle processing of the shift fork body.

Description

Technical Field

[0001] This utility model relates to the field of shift fork processing technology, specifically an adjustable shift fork positioning and clamping structure. Background Technology

[0002] Shift forks are key components in automotive transmission systems, such as gearboxes. Their primary function is to precisely move synchronizers or gears axially under the drive of shifting force, enabling the engagement and disengagement of power transmission paths for different gears, thus facilitating smooth gear shifting. To ensure stable operation under complex conditions, shift forks typically require multiple precision machining processes, including milling, drilling, and boring, to meet strict dimensional and geometric tolerance requirements. During this machining process, the shift fork blank or semi-finished product must be reliably and precisely clamped and fixed; any slight displacement or vibration can lead to machining deviations and render the part unusable.

[0003] In the actual machining of shift forks, the traditional and common practice is to design and manufacture dedicated fixtures for specific shift fork models. While these dedicated fixtures can provide good positioning and clamping effects for a single model of part, their structural rigidity, positioning element dimensions, and clamping point positions are often fixed, lacking necessary adjustability. With the increasing market demand for diversified automotive products, manufacturing companies often face a flexible production model of multiple varieties and small batches. In this context, when the production line needs to switch to machining shift fork parts of different structures and sizes, the existing fixture must be completely disassembled from the machine tool, and another set of matching dedicated fixtures must be installed and adjusted. This replacement process is not only time-consuming and labor-intensive, leading to a significant reduction in effective machine tool processing time and production efficiency, but also inevitably increases the manufacturing, management, and maintenance costs of the fixtures.

[0004] Based on this, an adjustable shift fork positioning and clamping structure is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this utility model is to provide an adjustable shift fork positioning and clamping structure to solve the problem of inconvenience in clamping different models of shift forks in the background art.

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

[0007] An adjustable shift fork positioning and clamping structure includes a support base with a placement groove at its upper end. A fixed shaft is fixedly mounted on one side of the support base, and a plurality of fixed rods are arrayed on the fixed shaft. The other end of each fixed rod is fixedly mounted inside a toothed ring. The toothed ring is rotatably mounted inside a fixed housing. The fixed housing is fixedly mounted on the upper end of a mounting plate. A positioning tube is fixedly mounted in the placement groove. A positioning mechanism for positioning the shift fork body is provided inside the positioning tube. A clamping mechanism for clamping and fixing the shift fork body is provided in the placement groove.

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

[0009] In one alternative: a drive gear is meshed on the gear ring, the drive gear is rotatably disposed inside the fixed housing, the drive gear is fixedly disposed at the output end of the motor, the motor is fixedly disposed at the upper end of the mounting plate, the motor is electrically connected to the control component, and the control component is fixedly disposed at the upper end of the mounting plate.

[0010] In one alternative embodiment: the positioning mechanism includes positioning rods, two of which are symmetrically arranged. A first guide slide rod is fixedly provided on one side of each positioning rod, and the first guide slide rod is slidably disposed in a sliding hole on one side of the adjusting plate. A second guide slide rod is fixedly provided on one side of each positioning rod, and the second guide slide rod is slidably disposed in a guide hole at the end of the positioning tube. A third connecting rod is hinged to one side of each positioning rod, and the third connecting rod is hingedly connected to a sliding plate. The sliding plate is slidably disposed inside the positioning tube. A threaded hole is provided in the middle of the sliding plate, and a threaded rod is fitted in the threaded hole. The threaded rod is rotatably disposed inside the positioning tube.

[0011] In one alternative embodiment: each positioning rod has an extension rod fixedly mounted at its bottom end; each placement groove has a limiting groove at its bottom end corresponding to the position of the extension rod; each extension rod has a sliding plate fixedly mounted at one end; each sliding plate is fixedly mounted inside a groove tube; the groove tube is fixedly mounted at the bottom end of the bearing seat; a second return spring is provided between one side of the sliding plate and one end of the groove tube; each extension rod is in close contact with the inclined surface of the guide block; the guide block is fixedly mounted at the output end of the second electric cylinder; and the second electric cylinder is fixedly mounted at the bottom end of the bearing seat.

[0012] In one alternative: a stop plate is closely attached to the end of the threaded rod, and a screw is rotatably provided at the upper end of the stop plate. The screw is fitted into the threaded hole at the upper end of the fixing bracket, and the fixing bracket is fixedly installed at the upper end of the positioning tube.

[0013] In one alternative embodiment: the clamping mechanism includes clamping frames, two clamping frames are slidably disposed in the placement groove, one end of each clamping frame is hinged to a first connecting rod, the other ends of the two first connecting rods are respectively hinged to both ends of a hinge rod, a fixing plate is fixedly disposed at the bottom end of the hinge rod, a sliding rod is fixedly disposed at the bottom end of the fixing plate, and a first return spring is disposed between the bottom end of the fixing plate and the bottom end of the mounting groove at the end of the bearing seat.

[0014] In one alternative: a second connecting rod is hinged to one end of the sliding rod, and a sliding seat is hinged to the other end of the second connecting rod. The sliding seat is slidably mounted on a third guide sliding rod, which is fixedly mounted on one end of a fixed shaft. A rotating plate is rotatably mounted at the end of the sliding seat, and the rotating plate is fixedly mounted at the output end of a first electric cylinder. The first electric cylinder is fixedly mounted on one side of the fixed housing.

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

[0016] This invention facilitates the positioning of the shift fork body by placing a positioning tube in the groove at the upper end of the support base and symmetrically arranging positioning rods on the outside of the positioning tube. Furthermore, the initial position of the positioning rods can be adjusted by a third connecting rod and a threaded rod, facilitating the positioning of shift fork bodies of different sizes. A clamping mechanism further facilitates the clamping and fixing of the shift fork body. The output end of the first electric cylinder drives the sliding seat to move different distances, further facilitating the clamping and fixing of shift fork bodies of different sizes. Finally, a fixed shaft is provided at the end of the support base, and a toothed ring can drive the support base to rotate, facilitating multi-angle machining of the shift fork body. These features enhance the practicality of the shift fork positioning and clamping structure. 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 fixed outer shell structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the installation of the gear ring and drive gear of this utility model.

[0020] Figure 4 This is a schematic diagram of the sliding rod structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the installation of the first connecting rod and the hinge rod of this utility model.

[0022] Figure 6 This is a schematic diagram of the guide block structure of this utility model.

[0023] Figure reference numerals: 11 Bearing seat, 12 Fixed shaft, 13 Gear ring, 14 Drive gear, 15 Motor, 16 Fixed housing, 17 Mounting plate, 18 Clamping frame, 19 First connecting rod, 20 Hinge rod, 21 Sliding rod, 22 First return spring, 23 Second connecting rod, 24 Sliding seat, 25 First electric cylinder, 26 Positioning tube, 27 Positioning rod, 28 Adjusting plate, 29 Third connecting rod, 30 Sliding plate, 31 Threaded rod, 32 Stop plate, 33 Extension rod, 34 Guide block, 35 Second electric cylinder, 36 Second return spring, 37 Control component, 38 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 1-6 As shown, an adjustable shift fork positioning and clamping structure includes a support base 11, with a placement groove at the upper end of the support base 11. A fixing shaft 12 is fixedly mounted on one side of the support base 11, and a plurality of fixing rods are arrayed on the fixing shaft 12. The other end of each fixing rod is fixedly mounted inside a toothed ring 13. The toothed ring 13 is rotatably mounted inside a fixing housing 16. The fixing housing 16 is fixedly mounted on the upper end of a mounting plate 17. A positioning tube 26 is fixedly mounted in the placement groove. A positioning mechanism for positioning the shift fork body 38 is provided inside the positioning tube 26. A clamping mechanism for clamping and fixing the shift fork body 38 is provided in the placement groove. The positioning mechanism facilitates quick positioning of the shift fork body 38, and the clamping mechanism facilitates clamping and fixing shift fork bodies 38 of different sizes.

[0026] A drive gear 14 is meshed on the gear ring 13. The drive gear 14 is rotatably disposed inside the fixed housing 16. The drive gear 14 is fixedly disposed at the output end of the motor 15. The motor 15 is fixedly disposed at the upper end of the mounting plate 17. The motor 15 is electrically connected to the control component 37, which is also fixedly disposed at the upper end of the mounting plate 17. In use, when multi-faceted machining of the shift fork body 38 is required, the motor 15 is started by controlling the control component 37. The output end of the motor 15 drives the drive gear 14 to rotate. The drive gear 14 meshes with the gear ring 13, causing the gear ring 13 to drive the bearing seat 11 to rotate by the required angle. The bearing seat 11 drives the shift fork body 38 to rotate, thereby facilitating multi-angle machining of the shift fork body 38.

[0027] The positioning mechanism includes positioning rods 27, two of which are symmetrically arranged. A first guide slide rod is fixedly provided on one side of each positioning rod 27. The first guide slide rod is slidably disposed in a sliding hole on one side of the adjusting plate 28. A second guide slide rod is fixedly provided on one side of each positioning rod 27. The second guide slide rod is slidably disposed in a guide hole at the end of the positioning tube 26. A third connecting rod 29 is hinged to one side of each positioning rod 27. The third connecting rod 29 is hinged to a sliding plate 30. The sliding plate 30 is slidably disposed inside the positioning tube 26. A threaded hole is provided in the middle of the sliding plate 30. A threaded rod 31 is fitted in the threaded hole. The threaded rod 31 is rotatably disposed inside the positioning tube 26.

[0028] Each positioning rod 27 has an extension rod 33 fixedly attached to its bottom end. A limiting groove is provided at the bottom end of the placement groove corresponding to the position of the extension rod 33. A sliding plate is fixedly attached to one end of each extension rod 33. The sliding plate is fixedly installed inside the groove tube, which is fixedly installed at the bottom end of the bearing seat 11. A second return spring 36 is provided between one side of the sliding plate and one end of the groove tube. Each extension rod 33 is in close contact with the inclined surface of the guide block 34. The guide block 34 is fixedly installed at the output end of the second electric cylinder 35, which is fixedly installed at the bottom end of the bearing seat 11. In use, when clamping and fixing the shift fork body 38, the end of the shift fork body 38... The perforated part is fitted onto the positioning tube 26. Then, the second electric cylinder 35 is started. The output end of the second electric cylinder 35 drives the guide block 34 to move. Under the action of the inclined surface of the guide block 34, the extension rod 33 drives the positioning rod 27 to slide. The positioning rod 27 is in close contact with the inner side of the perforation at the end of the shift fork body 38, thereby quickly positioning the shift fork body 38. When it is necessary to position the perforations of different diameters at the end of the shift fork body 38, the threaded rod 31 is rotated. Under the action of the thread, the sliding plate 30 slides inside the positioning tube 26. At the same time, the sliding plate 30 drives the positioning rod 27 to move through the third connecting rod 29, thereby adjusting the initial position of the positioning rod 27.

[0029] The end of the threaded rod 31 is closely attached to a stop plate 32. A screw is rotatably mounted on the upper end of the stop plate 32. The screw is fitted into the threaded hole at the upper end of the fixing bracket. The fixing bracket is fixedly mounted on the upper end of the positioning tube 26. In use, after the initial position of the positioning rod 27 is adjusted, the screw is rotated. Under the action of the thread, the screw drives the stop plate 32 to move. When the stop plate 32 is closely attached to the end of the threaded rod 31, the threaded rod 31 can be fixed.

[0030] The clamping mechanism includes clamping frames 18, two clamping frames 18 are slidably disposed in the placement groove, one end of each clamping frame 18 is hinged to a first connecting rod 19, the other end of each first connecting rod 19 is respectively hinged to both ends of a hinge rod 20, a fixing plate is fixedly disposed at the bottom end of the hinge rod 20, a sliding rod 21 is fixedly disposed at the bottom end of the fixing plate, and a first return spring 22 is disposed between the bottom end of the fixing plate and the bottom end of the mounting groove at the end of the bearing seat 11.

[0031] One end of the sliding rod 21 is hinged to a second connecting rod 23, and the other end of the second connecting rod 23 is hinged to a sliding seat 24. The sliding seat 24 is slidably mounted on a third guide sliding rod, which is fixedly mounted on one end of a fixed shaft 12. A rotating plate is rotatably mounted at the end of the sliding seat 24, and the rotating plate is fixedly mounted at the output end of a first electric cylinder 25. The first electric cylinder 25 is fixedly mounted on one side of the fixed housing 16. In use, when it is necessary to clamp and fix the shift fork body 38, the output end of the first electric cylinder 25 drives the sliding seat 24 to slide. The sliding seat 24 drives the sliding rod 21 to slide through the second connecting rod 23. The sliding rod 21 drives the hinge rod 20 to slide. The hinge rod 20 drives the two clamping frames 18 to slide through the first connecting rod 19, so that the clamping frames 18 clamp and fix the shift fork body 38.

[0032] The above embodiment discloses an adjustable shift fork positioning and clamping structure. When clamping and fixing the shift fork body 38, the end of the shift fork body 38 is sleeved onto the positioning tube 26 through the hole. Then, the second electric cylinder 35 is started. The output end of the second electric cylinder 35 drives the guide block 34 to move. Under the action of the inclined surface of the guide block 34, the extension rod 33 drives the positioning rod 27 to slide. The positioning rod 27 is in close contact with the inner side of the end hole of the shift fork body 38, thereby quickly positioning the shift fork body 38. Then, the output end of the first electric cylinder 25 drives the sliding seat 24 to slide. The sliding seat 24 drives the sliding rod 21 to slide through the second connecting rod 23. The sliding rod 21 drives the hinge rod 20 to slide. The hinge rod 20 drives the two clamping frames 18 to slide through the first connecting rod 19, so that the clamping frames 18 clamp and fix the shift fork body 38.

[0033] When the shift fork body 38 needs to be machined on multiple sides, the motor 15 is started by the control component 37. The output end of the motor 15 drives the drive gear 14 to rotate. The drive gear 14 meshes with the gear ring 13, so that the gear ring 13 drives the bearing seat 11 to rotate the required angle. The bearing seat 11 drives the shift fork body 38 to rotate, which facilitates the multi-angle machining of the shift fork body 38.

[0034] When it is necessary to position the perforations of different diameters at the end of the shift fork body 38, rotate the threaded rod 31. Under the action of the thread, the sliding plate 30 slides inside the positioning tube 26. At the same time, the sliding plate 30 drives the positioning rod 27 to move through the third connecting rod 29, thereby adjusting the initial position of the positioning rod 27. After the adjustment is completed, rotate the screw. Under the action of the thread, the screw drives the stop plate 32 to move. When the stop plate 32 is in close contact with the end of the threaded rod 31, the threaded rod 31 can be fixed.

[0035] 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. An adjustable shift fork positioning and clamping structure, comprising a support base (11), wherein the upper end of the support base (11) is provided with a placement groove, and a fixing shaft (12) is fixedly provided on one side of the support base (11), characterized in that, The fixed shaft (12) is provided with a plurality of fixed rods arranged in an array. The other end of each fixed rod is fixedly disposed inside the toothed ring (13). The toothed ring (13) is rotatably disposed inside the fixed housing (16). The fixed housing (16) is fixedly disposed on the upper end of the mounting plate (17). The placement groove is fixedly provided with a positioning tube (26). The positioning tube (26) is provided with a positioning mechanism for positioning the shift fork body (38). The placement groove is provided with a clamping mechanism for clamping and fixing the shift fork body (38).

2. The adjustable shift fork positioning and clamping structure according to claim 1, characterized in that, A drive gear (14) is meshed on the gear ring (13). The drive gear (14) is rotatably disposed inside the fixed housing (16). The drive gear (14) is fixedly disposed at the output end of the motor (15). The motor (15) is fixedly disposed at the upper end of the mounting plate (17). The motor (15) is electrically connected to the control component (37). The control component (37) is fixedly disposed at the upper end of the mounting plate (17).

3. The adjustable shift fork positioning and clamping structure according to claim 1, characterized in that, The positioning mechanism includes positioning rods (27), two positioning rods (27) are symmetrically arranged, a first guide slide rod is fixedly provided on one side of each positioning rod (27), the first guide slide rod is slidably disposed in the sliding hole on one side of the adjusting plate (28), a second guide slide rod is fixedly provided on one side of each positioning rod (27), the second guide slide rod is slidably disposed in the guide hole at the end of the positioning tube (26), a third connecting rod (29) is hinged on one side of each positioning rod (27), the third connecting rod (29) is hingedly connected to the sliding plate (30), the sliding plate (30) is slidably disposed inside the positioning tube (26), the sliding plate (30) is provided with a threaded hole in the middle, a threaded rod (31) is fitted in the threaded hole, the threaded rod (31) is rotatably disposed inside the positioning tube (26).

4. The adjustable shift fork positioning and clamping structure according to claim 3, characterized in that, The bottom end of each positioning rod (27) is fixedly provided with an extension rod (33). The bottom end of the placement groove is provided with a limiting slide groove corresponding to the position of the extension rod (33). One end of each extension rod (33) is fixedly provided with a sliding plate. The sliding plate is fixedly provided in the slide groove tube. The slide groove tube is fixedly provided at the bottom end of the bearing seat (11). A second return spring (36) is provided between one side of the sliding plate and one end of the slide groove tube. The extension rod (33) is tightly attached to the inclined surface of the guide block (34). The guide block (34) is fixedly provided at the output end of the second electric cylinder (35). The second electric cylinder (35) is fixedly provided at the bottom end of the bearing seat (11).

5. The adjustable shift fork positioning and clamping structure according to claim 4, characterized in that, The end of the threaded rod (31) is closely attached to a stop plate (32), and the upper end of the stop plate (32) is provided with a screw that rotates. The screw is fitted into the threaded hole at the upper end of the fixing bracket, and the fixing bracket is fixedly installed on the upper end of the positioning tube (26).

6. The adjustable shift fork positioning and clamping structure according to claim 1, characterized in that, The clamping mechanism includes a clamping frame (18), two clamping frames (18) are slidably disposed in the placement groove, one end of each clamping frame (18) is hinged to a first connecting rod (19), the other end of each first connecting rod (19) is hinged to both ends of a hinge rod (20), a fixing plate is fixedly disposed at the bottom end of the hinge rod (20), a sliding rod (21) is fixedly disposed at the bottom end of the fixing plate, and a first return spring (22) is disposed between the bottom end of the fixing plate and the bottom end of the mounting groove at the end of the bearing seat (11).

7. The adjustable shift fork positioning and clamping structure according to claim 6, characterized in that, The sliding rod (21) is hinged to a second connecting rod (23) at one end, and a sliding seat (24) is hinged to the other end of the second connecting rod (23). The sliding seat (24) is slidably mounted on a third guide sliding rod. The third guide sliding rod is fixedly mounted on one end of a fixed shaft (12). A rotating plate is rotatably mounted at the end of the sliding seat (24). The rotating plate is fixedly mounted at the output end of a first electric cylinder (25). The first electric cylinder (25) is fixedly mounted on one side of a fixed housing (16).

Images