A shift fork shaft clamping tool

Abstract

The utility model discloses a kind of shift fork shaft clamping tool, including base, the top of the base is fixedly connected with support, the front end of the support is rotatably connected with carousel, the inside middle part of the carousel is fixedly connected with fixed ring, the middle part of the fixed ring, carousel and support is all penetrated and is equipped with through-hole, the front end of the carousel is fixedly connected with motor two, the output end of motor two is penetrated carousel and is fixedly connected with gear two inwards, the design of this tool is synchronously clamped inward using three arc clamps, ensure that clamping force is evenly distributed by gear and bevel gear structure, avoid uneven stress of workpiece, the non-metallic wear-resistant material on the surface of clamping plate effectively protects shaft surface from scratching, and compensate small synchronous error, improve clamping stability and processing precision, reduce workpiece damage risk simultaneously, simultaneously realize the angle flexible adjustment of shift fork shaft by motor driving carousel rotation, adapt to different processing needs.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, and in particular to a gear shift fork shaft clamping fixture. Background Technology

[0002] The shift fork shaft is a key component in automotive transmissions, used to control the movement of the shift fork to achieve gear shifting. During machining, clamping fixtures must be used to ensure its correct positioning and secure fixation on the machine tool. Clamping fixtures prevent vibration or displacement during machining, avoid deformation or dimensional deviations caused by uneven stress, improve machining efficiency, and ensure consistency in batch production. Furthermore, fixtures simplify operating procedures, reduce human error, ensure machining quality meets design standards, and satisfy high-precision assembly requirements.

[0003] Existing shift fork shaft clamping fixtures generally adopt single-point or two-point clamping methods. Uneven clamping force distribution can easily cause workpiece deflection or deformation, affecting machining accuracy. Traditional fixtures often have metal-hard contact jaws, lacking buffer protection, which can easily leave indentations or scratches on the shaft surface. Fixtures that manually adjust the angle are cumbersome to operate and have inaccurate positioning, making it difficult to meet the requirements of high-precision machining and reducing clamping stability. Utility Model Content

[0004] The purpose of this utility model is to provide a clamping fixture for the shift fork shaft, which solves the problem that existing clamping fixtures generally adopt single-point or two-point clamping methods, and the uneven distribution of clamping force can easily lead to workpiece deflection or deformation, affecting machining accuracy.

[0005] To achieve the above objectives, a gear shift fork shaft clamping fixture is provided, including a base, a bracket fixedly connected to the top of the base, a turntable rotatably connected to the front end of the bracket, a fixing ring fixedly connected to the inner center of the turntable, and through holes opened through the middle of the fixing ring, the turntable, and the bracket. A second motor is fixedly connected to the front end of the turntable, and a second gear is fixedly connected to the output end of the second motor through the turntable and inward.

[0006] The turntable is internally connected to a gear four, the outer end of which meshes with a gear two. The inner end of the turntable, located inside the gear four, is rotatably connected to three shafts. A gear three is fixedly connected to each shaft, and the inner end of the gear three meshes with the inner end of the gear four.

[0007] According to the aforementioned gear shift fork shaft clamping fixture, the front end of the turntable is fixedly connected to three connecting shells, and a screw is rotatably connected inside the connecting shell.

[0008] According to the aforementioned gear shift fork shaft clamping fixture, a second bevel gear is fixedly connected to the inner end of the connecting housing of the screw, and a first bevel gear is fixedly connected to the top of the rotating shaft, with the first bevel gear and the second bevel gear meshing with each other.

[0009] According to the aforementioned gear shift fork shaft clamping fixture, the outer end of the screw is threaded with a threaded sleeve, and the other end of the threaded sleeve is fixedly connected to an arc-shaped clamping plate through a fixing ring.

[0010] According to the aforementioned gear shift fork shaft clamping fixture, the outer ends of the threaded sleeve are provided with sliding grooves, and the inner end of the fixing ring is fixedly connected to a slider, which is slidably connected inside the sliding groove.

[0011] According to the aforementioned gear shift fork shaft clamping fixture, a motor is fixedly connected to the rear end of the bracket, and a gear is fixedly connected to the output end of the motor through the bracket, and the gear meshes with the turntable.

[0012] The above-mentioned solution has the following beneficial effects:

[0013] 1. This fixture adopts a design of three arc-shaped clamping plates clamping inward synchronously. The gear and bevel gear structure ensures that the movement of the clamping plates is consistent, so that the clamping force is evenly distributed and the workpiece is not subjected to uneven force. The non-metallic wear-resistant material on the surface of the clamping plates effectively protects the shaft surface from scratches and compensates for minor synchronization errors, improving clamping stability and machining accuracy, while reducing the risk of workpiece damage. At the same time, the angle of the shift fork shaft can be flexibly adjusted by the motor-driven turntable rotation to adapt to different machining needs.

[0014] 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

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the overall structure of a shift fork shaft clamping fixture according to the present invention;

[0017] Figure 2 This is a cross-sectional view of the transmission structure of a shift fork shaft clamping fixture according to the present invention.

[0018] Figure 3 This is a top view of the transmission structure of a shift fork shaft clamping fixture according to the present invention;

[0019] Figure 4 This is a schematic diagram of the clamping assembly of a shift fork shaft clamping fixture according to the present invention.

[0020] Legend:

[0021] 1. Base; 2. Gear 1; 3. Motor 1; 4. Bracket; 5. Turntable; 6. Fixing ring; 7. Through hole; 8. Gear 2; 9. Gear 3; 10. Arc-shaped clamp; 11. Screw sleeve; 12. Gear 4; 13. Bevel gear 1; 14. Rotating shaft; 15. Bevel gear 2; 16. Screw; 17. Slider; 18. Slide groove; 19. Connecting shell; 20. Motor 2. Detailed Implementation

[0022] 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.

[0023] Reference Figure 1-4 This utility model provides a gear shift fork shaft clamping fixture, including a base 1, a bracket 4 fixedly connected to the top of the base 1, a turntable 5 rotatably connected to the front end of the bracket 4, a fixing ring 6 fixedly connected to the inner center of the turntable 5, and through holes 7 provided in the middle of the fixing ring 6, the turntable 5, and the bracket 4. A second motor 20 is fixedly connected to the front end of the turntable 5, and a second gear 8 is fixedly connected to the output end of the second motor 20 through the turntable 5. The gear shift fork shaft can pass through the through holes 7 and be fixed by three arc-shaped clamping plates 10 inside.

[0024] Gear 4 12 is rotatably connected inside the turntable 5. The outer end of gear 4 12 meshes with gear 2 8. Three rotating shafts 14 are rotatably connected to the inner end of the turntable 5, located inside gear 4 12. Gear 3 9 is fixedly connected to the rotating shaft 14, and gear 3 9 meshes with the inner end of gear 4 12. Three connecting shells 19 are fixedly connected to the front end of the turntable 5. Screws 16 are rotatably connected inside the connecting shells 19. Bevel gear 2 15 is fixedly connected to the inner end of the screws 16. Bevel gear 13 is fixedly connected to the top of the rotating shafts 14. Bevel gear 13 meshes with bevel gear 2 15. A threaded sleeve 11 is threaded onto the outer end of the screw 16. The other end of the threaded sleeve 11 passes through the fixing ring 6 and is fixedly connected to an arc-shaped clamp 10. The starting motor 20 can drive... The internal gear 2 8 rotates, which in turn drives gear 4 12 to rotate. Similarly, the inner ring of gear 4 12 rotates with gear 3 9. The rotation of gear 3 9 enables the rotation of shaft 14 and bevel gear 2 15. Since bevel gear 2 15 meshes with bevel gear 1 13, it can drive bevel gear 1 13 and screw 16 to rotate. Finally, under the action of the threaded engagement, the screw sleeve 11 can drive the arc-shaped clamping plate 10 to move inward, thereby stably clamping the shift fork shaft and ensuring the stability of the shift fork shaft during processing. Through the mutual cooperation of three sets of gears and one set of bevel gears, the synchronous rotation of the three sets of screws 16 can be achieved, realizing the stable clamping of the shift fork shaft and improving the clamping effect of the entire device.

[0025] The outer ends of the threaded sleeve 11 are provided with sliding grooves 18, and the inner end of the fixing ring 6 is fixedly connected with a slider 17. The slider 17 is slidably connected inside the sliding groove 18. By setting the sliding groove 18 and the slider 17, the threaded sleeve 11 can be restricted to ensure the stability of the threaded sleeve 11 when sliding and improve the clamping effect. The through hole 7 or the bracket 4 / turntable 5 is designed with a channel for threading. At the rotation center of the turntable 5 and the bracket 4 (i.e., the space around the through hole 7), a conductive slip ring (rotary joint) is integrated to transmit the power and control signals of the motor 20.

[0026] Motor 3 is fixedly connected to the rear end of bracket 4. Gear 2 is fixedly connected to the output end of motor 3 through bracket 4. Gear 2 meshes with turntable 5. Starting motor 3 can drive gear 3 to rotate. Under meshing action, it can drive turntable 5 to rotate, thereby realizing the angle adjustment of shift fork shaft. A layer of non-metallic wear-resistant material (such as polyurethane, nylon, copper-based composite material) is inlaid or bonded to the working surface (contact surface with shaft) of each arc-shaped clamping plate 10. This layer of material can compensate for small synchronization errors, make the clamping force distribution more uniform, and effectively protect the workpiece surface from scratches. At the same time, the machining accuracy (such as coaxiality, tooth profile accuracy, cumulative tooth pitch error) and assembly accuracy (such as gear clearance adjustment) of gear 3 9 and gear 4 12 ensure optimal initial synchronization and delay asynchrony caused by wear.

[0027] Working principle: When in use, the operator passes the shift fork shaft through the through hole 7, and then starts the motor 20, which drives the internal gear 2 8 to rotate. Under the meshing action, it drives the gear 4 12 to rotate. Similarly, the inner ring of gear 4 12 rotates with gear 3 9. The rotation of gear 3 9 enables the rotation of shaft 14 and bevel gear 2 15. Since bevel gear 2 15 meshes with bevel gear 1 13, it can drive bevel gear 1 13 and screw 16 to rotate. Finally, under the action of the threaded engagement, the screw sleeve 11 can drive the arc-shaped clamping plate 10 to move inward, thereby stably clamping the shift fork shaft and ensuring the stability of the shift fork shaft during processing.

[0028] When the angle of the shift fork shaft needs to be adjusted during the processing, the starter motor 3 can drive the gear 3 to rotate, and under the meshing action, it can drive the turntable 5 to rotate, thereby realizing the angle adjustment of the shift fork shaft and improving the overall clamping effect.

[0029] 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 clamping fixture for a shift fork shaft, comprising a base (1), characterized in that, The top of the base (1) is fixedly connected to a bracket (4), the front end of the bracket (4) is rotatably connected to a turntable (5), the inner middle of the turntable (5) is fixedly connected to a fixing ring (6), the fixing ring (6), the turntable (5) and the middle of the bracket (4) are all provided with through holes (7), the front end of the turntable (5) is fixedly connected to a second motor (20), the output end of the second motor (20) is fixedly connected to a second gear (8) through the turntable (5); The turntable (5) is rotatably connected to a gear four (12), the outer end of which meshes with a gear two (8). The inner end of the turntable (5) and the inner side of the gear four (12) are rotatably connected to three shafts (14). A gear three (9) is fixedly connected to the shaft (14), and the gear three (9) meshes with the inner end of the gear four (12).

2. The shift fork shaft clamping fixture according to claim 1, characterized in that, The front end of the turntable (5) is fixedly connected to three connecting shells (19), and a screw (16) is rotatably connected inside the connecting shell (19).

3. The shift fork shaft clamping fixture according to claim 2, characterized in that, The screw (16) is fixedly connected to the inner end of the connecting shell (19) with a bevel gear two (15), and the top of the rotating shaft (14) is fixedly connected with a bevel gear one (13). The bevel gear one (13) and the bevel gear two (15) mesh with each other.

4. The shift fork shaft clamping fixture according to claim 2, characterized in that, The outer end of the screw (16) is threaded with a screw sleeve (11), and the other end of the screw sleeve (11) passes through the fixing ring (6) and is fixedly connected to an arc-shaped clamp (10).

5. The shift fork shaft clamping fixture according to claim 4, characterized in that, The outer ends of the threaded sleeve (11) are provided with sliding grooves (18), and the inner end of the fixing ring (6) is fixedly connected with a slider (17), which is slidably connected inside the sliding groove (18).

6. The shift fork shaft clamping fixture according to claim 1, characterized in that, The rear end of the bracket (4) is fixedly connected to a motor (3), and the output end of the motor (3) passes through the bracket (4) and is fixedly connected to a gear (2). The gear (2) meshes with the turntable (5).

Images