Clamping fixture for drilling center hole in sliding fork of transmission shaft
The clamping fixture with pneumatic clamps and limit block structure solves the problems of cumbersome and laborious clamping and easy loosening of the old clamp, realizes rapid clamping and centering of the sliding fork, and improves drilling accuracy and stability.
Patent Information
- Application Number
- CN202422632686.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-10-30
AI Technical Summary
The clamping of the light sliding fork drill hole fixture on the old roughing line is cumbersome and laborious, and is easy to loosen, resulting in low center hole processing accuracy and affecting subsequent fine processing.
It adopts a pneumatic clamp and limit block structure. The pneumatic clamp clamps the sliding fork shaft end through the pneumatic fingers, the limit block forms a limit groove, and the support seat and support shaft support the sliding fork body to ensure centering and stability.
The rapid clamping and centering of the sliding fork is achieved to avoid loosening, improve drilling accuracy and connection stability, and reduce the labor intensity of workers.
Smart Images
Figure CN223477011U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drilling technology for sliding forks of drive shafts, and in particular to a clamping fixture for drilling intermediate holes with sliding forks of drive shafts. Background Art
[0002] The old-style roughing line uses a light sliding fork drill chuck for center hole machining, which is done by a large vertical drill and manually clamped by a three-jaw chuck. The clamping and operation process is cumbersome and laborious, and there are problems such as difficulty in centering and the possibility of loosening. As a result, the machined products often have obvious steps in the center hole, which has a great impact on the subsequent finishing process. Utility Model Content
[0003] To address the problems existing in the prior art, this utility model provides a clamping fixture for drilling the middle hole of a drive shaft sliding fork.
[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a clamping fixture for drilling a hole in a sliding fork of a drive shaft, including a base, a support seat set on the base, and a vertical plate set on the base. The support seat is used to support the sliding fork body. The vertical plate is provided with a pneumatic gripper for clamping the shaft end of the sliding fork. The pneumatic gripper has two pneumatic fingers. The surfaces of the two pneumatic fingers facing each other have V-shaped clamping openings. The vertical plate is provided with a support plate. Two limiting blocks are provided opposite to each other on the support plate. A limiting groove is formed between the two limiting blocks for limiting the lug end of the sliding fork.
[0005] As a preferred embodiment, the vertical plate and the base are L-shaped and are integrally formed.
[0006] As a preferred embodiment, the support plate is L-shaped and has a horizontal part and a vertical part. The vertical part is connected to the vertical plate by a first bolt. The vertical plate is located between the pneumatic gripper and the vertical part. The horizontal part is connected to the vertical plate by a second bolt. The limiting block is set on the horizontal part at one end away from the vertical part.
[0007] As a preferred solution, the upper end of the vertical plate is provided with a limiting groove for the horizontal part to engage.
[0008] As a preferred embodiment, the V-shaped clamp has two inclined working surfaces, and the inclined working surfaces are provided with mounting grooves, and clamping pads are provided in the mounting grooves.
[0009] As a preferred embodiment, the lower end of the base is provided with a weight-reducing groove.
[0010] As a preferred embodiment, the base is provided with extensions on both sides.
[0011] As a preferred embodiment, the upper end of the support base is provided with a support shaft, and the support shaft is provided with a U-shaped groove.
[0012] The beneficial effects of this application are as follows: 1. This application uses two pneumatic fingers of the pneumatic gripper to bring the two V-shaped jaws closer together, thereby quickly clamping the end of the sliding fork shaft to prevent loosening, effectively reducing the labor intensity of workers, and also effectively centering the sliding fork, thus ensuring the centering effect. In conjunction with the support base and two limit blocks, the support base plays the role of supporting the sliding fork body, and the two limit blocks form a limit groove to limit the lug end of the sliding fork, preventing the sliding fork from shaking during drilling and effectively improving drilling accuracy.
[0013] 2. This application uses the horizontal part to lock into the limiting groove to prevent the horizontal part from shaking and ensure the stability of the connection.
[0014] 3. This application achieves weight reduction by setting weight-reducing grooves. Attached Figure Description
[0015] Figure 1 It is a structural diagram of the utility model;
[0016] Figure 2 for Figure 1 Front view;
[0017] Figure 3 This is a schematic diagram of the structure of the pneumatic finger of this utility model;
[0018] Figure 4 for Figure 3 Side view.
[0019] The markings in the diagram are: 1. Base, 11. Vertical plate, 12. Weight reduction groove, 13. Extension, 2. Support seat, 21. Support shaft, 22. U-shaped groove, 3. Sliding fork body, 31. Sliding fork shaft end, 32. Sliding fork lug end, 4. Pneumatic gripper, 41. Pneumatic finger, 411. V-shaped clamp, 412. Inclined working surface, 413. Mounting groove, 414. Rectangular groove, 5. Support plate, 51. Horizontal part, 52. Vertical part, 6. Limiting block, 7. Clamping pad. DETAILED DESCRIPTION
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0021] Please see Figure 1-4 This utility model provides a clamping fixture for drilling a hole in a sliding fork of a drive shaft, including a base 1, a support seat 2 disposed on the base 1, and a vertical plate 11 disposed vertically on the base 1. The support seat 2 is used to support the sliding fork body 3. The vertical plate 11 is provided with a pneumatic gripper 4 for clamping the shaft end 31 of the sliding fork. The pneumatic gripper 4 has two pneumatic fingers 41, and the opposing surfaces of the two pneumatic fingers 41 have V-shaped clamping openings 411. The vertical plate 11 is provided with a support plate 5, and two limiting blocks 6 are provided opposite to each other on the support plate 5. A limiting groove is formed between the two limiting blocks 6 for limiting the lug end 32 of the sliding fork.
[0022] The pneumatic gripper 4 includes a housing, a slide rail, and grippers. A cylinder is installed inside the housing. The housing has an opening on the side facing the cylinder piston, and a slide rail is installed at the opening. The grippers consist of two sliders symmetrically mounted on the slide rail. The grippers are connected to the cylinder piston, and the two sliders can be driven by the cylinder to move towards each other along the slide rail. The pneumatic gripper 4 can be an existing parallel pneumatic gripper. The vertical plate 11 and the base 1 are L-shaped and integrally formed. It should be noted that any parts not detailed in this application are prior art.
[0023] Specifically, the support plate 5 is L-shaped and has a horizontal portion 51 and a vertical portion 52. The vertical portion 52 is connected to the vertical plate 11 by a first bolt. The vertical plate 11 is located between the pneumatic gripper 4 and the vertical portion 52. The horizontal portion 51 is connected to the vertical plate 11 by a second bolt. A limiting block 6 is disposed on the horizontal portion 51 at one end away from the vertical portion 52. The horizontal portion 51 and the two limiting blocks 6 form a U-shaped structure. The limiting blocks 6, the horizontal portion 51, and the vertical portion 52 are integrally manufactured. The upper end of the vertical plate 11 is provided with a limiting groove for the horizontal portion 51 to engage.
[0024] In addition, the upper end of the support base 2 is provided with a support shaft 21, and the support shaft 21 is provided with a U-shaped groove 22. The U-shaped groove 22 is provided to assist in chip removal. The base 1 is provided with extensions 13 on both sides, and the extensions 13 are provided with mounting holes for installation. In use, the extensions 13 are installed on a large vertical drilling machine by fixing bolts.
[0025] This application utilizes the pneumatic fingers 41 of the pneumatic gripper 4 to bring the two V-shaped jaws closer together, thereby quickly clamping the sliding fork shaft end 31, preventing loosening, and effectively centering the sliding fork. This ensures a stable centering effect. In conjunction with the support base 2 and two limiting blocks 6, the support base 2 supports the sliding fork body 3, and the upper end of the support shaft 21 abuts against the lower end of the sliding fork shaft end 31, helping to counteract the downward force of the drill bit and preventing damage to the pneumatic gripper 4. The two limiting blocks 6 form a limiting groove that restricts the sliding fork lug end 32, preventing the sliding fork from wobbling during drilling and effectively improving drilling accuracy. When the two pneumatic fingers 41 clamp the sliding fork shaft end 31, the sliding fork lug end 3 abuts against the inner sides of the two limiting blocks 6.
[0026] Of course, this utility model is not limited to the embodiments described above. Several other embodiments based on the design concept of this utility model are also provided below.
[0027] For example, in other embodiments, unlike the embodiments described above, such as... Figure 1 and Figure 2 As shown, the lower end of the base 1 is provided with a weight-reducing groove 12.
[0028] For example, in other embodiments, unlike the embodiments described above, the combination of Figure 3 and Figure 4 As shown, the V-shaped clamp 411 has two inclined working surfaces 412. The bottom of the V-shaped clamp 411 is provided with a rectangular groove 414 extending along the V-shaped clamp 411. The inclined working surfaces 412 are provided with mounting grooves 413, and the mounting grooves 413 are provided with clamping pads 7.
[0029] For example, in other embodiments, unlike the embodiments described above, anti-slip teeth are provided on the surface of the clamping pad 7 that is away from the rectangular recess 414. The clamping pad 7 and the anti-slip teeth are made as one piece and are in the shape of a rack. When clamping the sliding fork body 3, the anti-slip teeth contact the sliding fork shaft end 31. The anti-slip teeth play an anti-slip role and ensure the stability of clamping.
[0030] It should be noted that the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A clamping fixture for drilling a center hole with a sliding fork of a drive shaft, characterized in that, Includes a base (1), a support seat (2) set on the base (1) and a vertical plate (11) set vertically on the base (1). The support seat (2) is used to support the sliding fork body (3). The vertical plate (11) is provided with a pneumatic gripper (4) for clamping the sliding fork shaft end (31). The pneumatic gripper (4) has two pneumatic fingers (41). The two pneumatic fingers (41) have a V-shaped clamping mouth (411) on the opposite surface. The vertical plate (11) is provided with a support plate (5). The support plate (5) is provided with two limiting blocks (6) opposite to each other. A limiting groove is formed between the two limiting blocks (6) for limiting the sliding fork lug end (32).
2. The clamping fixture for drilling a center hole with a sliding fork on a drive shaft according to claim 1, characterized in that: The vertical plate (11) and the base (1) are L-shaped and are integrally formed.
3. The clamping fixture for drilling a center hole with a sliding fork on a drive shaft according to claim 1, characterized in that: The support plate (5) is L-shaped and has a horizontal part (51) and a vertical part (52). The vertical part (52) is connected to the vertical plate (11) by a first bolt. The vertical plate (11) is located between the pneumatic gripper (4) and the vertical part (52). The horizontal part (51) is connected to the vertical plate (11) by a second bolt. The limiting block (6) is set on the horizontal part (51) at one end away from the vertical part (52).
4. A clamping fixture for drilling a center hole with a sliding fork on a drive shaft according to claim 1, characterized in that: Therefore, the upper end of the vertical plate (11) is provided with a limiting groove for the horizontal part (51) to be engaged.
5. A clamping fixture for drilling a center hole with a sliding fork on a drive shaft according to claim 1, characterized in that: The V-shaped clamp (411) has two inclined working surfaces (412), and an installation groove (413) is provided on the inclined working surface (412). A clamping pad (7) is provided in the installation groove (413).
6. A clamping fixture for drilling a center hole with a sliding fork on a drive shaft according to claim 1, characterized in that: The base (1) has a weight-reducing groove (12) at its lower end.
7. A clamping fixture for drilling a center hole with a sliding fork on a drive shaft according to claim 1, characterized in that: The base (1) has extensions (13) on both sides.
8. A clamping fixture for drilling a center hole with a sliding fork on a drive shaft according to claim 1, characterized in that: The upper end of the support base (2) is provided with a support shaft (21), and the support shaft (21) is provided with a U-shaped groove (22).