Shifting fork machining and positioning tool
By designing a positioning fixture for shift fork machining, and using support columns and positioning blocks to achieve stable clamping of the shift fork, the problem of low machining accuracy of shift forks in the existing technology is solved, and machining quality and efficiency are improved.
Patent Information
- Application Number
- CN202423170387.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-20
AI Technical Summary
The lack of dedicated clamping tools in the current shift fork machining process results in low machining accuracy, easy occurrence of vibration marks and excessive roughness, affecting the subsequent machining datum and failing to meet design requirements.
Design a positioning fixture for shift fork machining that includes a base plate, a support plate, a clamping assembly, and a positioning assembly. The fixture achieves stable clamping of the shift fork through multiple support columns and positioning blocks. The fixture utilizes a V-shaped positioning block and angle adjustment function to ensure uniform clamping reference, avoid interference and deformation, and provide a unified machining reference.
This improved the precision and quality of shift fork machining, avoided vibration marks and deformation, ensured the stability and consistency of subsequent machining, and improved machining efficiency.
Smart Images
Figure CN223588834U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a shift fork processing technical field especially relates to a shift fork processing positioning frock. BACKGROUND
[0002] The shift fork is the part on the automobile gearbox, is connected with the speed change handle, is located the lower end of handle, stirs the intermediate gear, makes the input / output speed ratio change, and the shift fork is mainly used for clutch gear shifting, and the shift fork 1 includes the shift fork head 11, the shift fork arm 12 and the shift fork clamping mouth 13.
[0003] In the production and processing of shift fork, since the shift fork is usually forged by 45# steel, the appearance of the shift fork after forging has big difference, and the uniqueness of the clamping reference cannot be achieved, in order to ensure the machining accuracy, the shift fork head end face and the shift fork clamping mouth end face need to be milled before drilling, and in the existing milling process, the pressing block is usually used for locking, and there is no special clamping tool, so that the product is prone to vibration after processing, the roughness is too large, the friction is increased after assembly, it is not smooth enough, abnormal sound is produced, and the subsequent processing reference is also affected, so that the product cannot meet the design requirements. UTILITY MODEL CONTENTS
[0004] The utility model solves the technical problem in the prior art, provides a shift fork processing positioning frock, ensures the accuracy of milling, provides a unified reference for subsequent processing, improves product processing quality, and has the characteristics of wide application range and strong practicality.
[0005] The utility model adopts the technical scheme: a shift fork processing positioning frock, including the bottom plate, the bottom plate both sides are equipped with the support plate, the support plate one side is equipped with the first pressure assembly that presses the shift fork one end, the bottom plate middle position is equipped with the second extrusion assembly that is used for pressing two shift forks simultaneously, the bottom plate top is equipped with two symmetrical positioning assemblies, the positioning assembly includes two V-shaped positioning blocks, the positioning block is detachable link through screw and the bottom plate, the bottom plate both sides are equipped with a plurality of support columns respectively, a plurality of support columns are arranged below the shift fork arm and the shift fork clamping mouth respectively, the bottom plate is equipped with the third extrusion assembly that is used for pressing the shift fork head and the shift fork arm junction.
[0006] Specifically, the first pressure assembly includes a first pressing plate, a first screw and a locking nut, the lower end of the first screw is connected with the bottom plate, the first pressing plate is sleeved on the first screw, the locking nut is installed on the first screw, and the first pressing plate is pressed on the support plate and the shift fork on the both sides.
[0007] Preferably, the second extrusion assembly comprises a second pressing plate, a second screw rod, a locking nut and two positioning plates, the two positioning plates are symmetrically arranged on the middle of the bottom plate, the lower end of the second screw rod is arranged on the bottom plate between the two positioning plates, the second pressing plate is sleeved on the second screw rod, the locking nut is arranged on the second screw rod, and the two sides of the second pressing plate are pressed on the two sides of the shift fork arm respectively.
[0008] Further, the first pressing plate and the second pressing plate are provided with small bosses on the two sides of the bottom, and the supporting plate is provided with supporting grooves matched with the small bosses.
[0009] Further, the third extrusion assembly comprises a third pressing plate, a balance column, a third screw rod and a locking nut, the third screw rod and the balance column are arranged on the bottom plate, the third pressing plate is arranged on the third screw rod, and the locking nut is arranged on the third screw rod, and the two sides of the third pressing plate are pressed on the shift fork arm and the balance column respectively.
[0010] Further, the top of the supporting column is provided with a boss, and the top of the boss is provided with a small taper.
[0011] Beneficial effects
[0012] Compared with the prior art, the utility model has the following advantages:
[0013] The utility model discloses a shift fork machining positioning tool, through setting up two stations, can simultaneously clamp two shift forks and process, effectively promote processing efficiency, in the use process, first loosen the locking nut on the third screw rod, let third pressing plate can move flexibly, during the shift fork installation, place the shift fork on a plurality of supporting columns, utilize the positioning block and the positioning plate to its positioning and limit, guarantee clamping reference uniformity, wherein utilize the positioning block of V type arrangement, play the limiting and positioning effect, can satisfy the shift fork different size requirement simultaneously, through unscrewing the screw, can realize the angle adjustment of two positioning blocks, can satisfy the shift fork different size requirement, avoid the interference when complete machine assembly, after positioning, first tighten the locking nut of first pressing assembly, then tighten the locking nut of second extrusion assembly, make first pressing plate and second pressing plate press tightly to the both ends of the shift fork, through setting up small boss at the bottom, can better with the shift fork pressure point correspondence under the natural dress, play the balance effect, make the shift fork clamping stable, do not exist interference, press the situation clamping, effectively guarantee size and roughness and do not deform after processing, finally tighten the locking nut on the third screw rod, press tightly to the shift fork head through third pressing plate, play the effect of strong and tight shift fork, prevent the loosening during processing, avoid the vibration mark, ensure the processing precision, provide uniform reference for subsequent processing, improve product processing quality, have convenient to use, wide application range's characteristics. ACCURACY
[0014] Figure 1 is a perspective structure schematic view of the utility model;
[0015] Figure 2 is a top view structure schematic view of the utility model;
[0016] Figure 3 is a first briquetting structure enlarged schematic view in the utility model;
[0017] Figure 4 is a support column structure enlarged schematic view in the utility model;
[0018] Figure 5 is a shift fork structure enlarged schematic view in the utility model.
[0019] Wherein: 1 - shift fork, 2 - first compression assembly, 3 - second extrusion assembly, 4 - third extrusion assembly, 5 - bottom plate, 6 - support plate, 7 - boss, 8 - small taper, 9 - small boss, 10 - positioning block, 11 - shift fork head, 12 - shift fork arm, 13 - shift fork clamping opening, 14 - screw, 15 - support column, 16 - support groove, 21 - first screw, 22 - locking nut, 23 - first pressing plate, 31 - positioning plate, 32 - second pressing plate, 33 - second screw, 41 - third pressing plate, 42 - third screw, 43 - balance column. DETAILED DESCRIPTION
[0020] The utility model will be further explained in combination with specific embodiment in the attached drawing.
[0021] Reference Figures 1-5As shown, the utility model discloses a kind of fork processing positioning tool, including bottom plate 5, bottom plate 5 both sides are equipped with support plate 6, each support plate 6 one side is equipped with the first pressure assembly 2 of the one end of compacting fork 1, the second extrusion assembly 3 for simultaneously compacting two forks 1 is equipped in the middle position of bottom plate 5, two symmetrical positioning assemblies are equipped above bottom plate 5, positioning assembly includes two positioning blocks 10 arranged in V shape, positioning block 10 is detachably linked with bottom plate 5 by screw 14, a plurality of support columns 15 are respectively equipped on the both sides of bottom plate 5, a plurality of support columns 15 are arranged below fork arm 12 and fork clamping port 13 respectively, third extrusion assembly 4 for compacting the junction of fork head 11 and fork arm 12 is equipped on bottom plate 5, by being provided with two stations, two forks 1 can be simultaneously clamped for processing, effectively improve processing efficiency, in use process, first loosen locking nut 22 on third screw 42, so that third pressing plate 41 can be flexibly moved, during fork 1 installation, fork 1 is placed on a plurality of support columns 15, positioning and limiting are carried out using positioning block 10 positioning plate 31, guaranteeing that clamping reference is uniform, wherein using positioning block arranged in V shape, play limiting and positioning effect, can meet the different size requirements of fork 1 simultaneously, by loosening screw 14, the angle adjustment of two positioning blocks 10 can be realized, can meet the different size requirements of fork, avoid interference when whole machine assembly, after positioning, first pressure assembly 2 locking nut 22 is tightened first, then second extrusion assembly 3 locking nut 22 is tightened, so that first pressing plate 23 and second pressing plate 32 compact two ends of fork 1, by being provided with small boss 9 at bottom, in natural state, it can be better with the fork 1 pressure point correspondence, play the role of balance, so that fork 1 clamping is stable, there is no interference, clamping under oppression, effectively guarantee size and roughness and non-deformation phenomenon after processing, finally, locking nut 22 on third screw 42 is tightened, compact fork head 11 by third pressing plate 41, play the role of strong compacting fork, prevent loosening during processing, avoid vibration, ensure processing precision, provide uniform reference for subsequent processing, improve product processing quality.
[0022] Specifically, the first pressure assembly 2 includes a first pressing plate 23, a first screw 21, and a locking nut 22. The lower end of the first screw 21 is connected with the bottom plate 5. The first pressing plate 23 is sleeved on the first screw 21. The locking nut 22 is installed on the first screw 21. The two sides of the first pressing plate 23 are compacted on the support plate 6 and the fork 1 respectively. The fork 1 is compacted by tightening the locking nut 22 and pressing the first pressing plate 23. The first pressure assembly 2 is arranged on one side of the fork clamping port 13, which can compact the fork 1 closely, prevent vibration during processing of the end face of the fork clamping port 13, and reduce the roughness of the end face.
[0023] Preferably, the second extrusion assembly 3 comprises a second pressing plate 32, a second screw rod 33, a locking nut 22 and two positioning plates 31, the two positioning plates 31 are symmetrically installed at the middle position of the bottom plate 5, the lower end of the second screw rod 33 is installed on the bottom plate 5 between the two positioning plates 31, the second pressing plate 32 is sleeved on the second screw rod 33, the locking nut 22 is installed on the second screw rod 33, the two sides of the second pressing plate 32 are respectively pressed on the two sides of the shift fork arm 12, the second pressing plate 32 can be pressed on the two sides of the shift fork 1 at the same time by tightening the locking nut 22, and the function of clamping two at the same time is realized, and the clamping efficiency is improved.
[0024] Further, the first pressing plate 23 and the second pressing plate 32 are provided with small bosses 9 at the bottom of the two sides, the supporting plate 6 is provided with supporting grooves 16 matched with the small bosses 9, the pressing points of the small bosses 9 correspond to the supporting points, and balance is achieved, so that the shift fork is stably clamped.
[0025] Further, the third extrusion assembly 4 comprises a third pressing plate 41, a balance column 43, a third screw rod 42 and a locking nut 22, the third screw rod 42 and the balance column 43 are installed on the bottom plate 5, the third pressing plate 41 is arranged on the third screw rod 42, the locking nut 22 is installed on the third screw rod 42, the two sides of the third pressing plate 41 are respectively pressed on the shift fork arm 12 and the balance column 43, the locking nut 22 on the third screw rod 42 is tightened, the shift fork head 11 is pressed by the third pressing plate 41, the shift fork is strongly pressed, the shift fork head 11 is prevented from loosening during machining, vibration is avoided, and machining precision is ensured.
[0026] Further, the supporting column 15 is provided with a boss 7 at the top, and a small taper surface 8 is arranged at the top of the boss 7, which plays a good supporting role for the shift fork, and is different from the conventional supporting rod, the end surface of the supporting column 15 is designed as a small taper boss, the supporting point is matched with the pressing point of the third pressing plate 41, balance is achieved, and the shift fork 1 is stably clamped.
[0027] The preferred embodiments of the utility model are described above, and it should be pointed out that for those skilled in the art, without departing from the structure of the utility model, a plurality of deformations and improvements can be made, which will not affect the effect and practicability of the utility model.
Claims
1. A fork machining positioning tool characterized by, The utility model provides a presser foot holder, including bottom plate (5), both sides of bottom plate (5) are equipped with support plate (6), one side of each support plate (6) is equipped with the first pressure assembly (2) of one end of pressing fork (1), the middle position of bottom plate (5) is equipped with the second extrusion assembly (3) for pressing two forks (1) simultaneously, the top of bottom plate (5) is equipped with two symmetrical positioning assemblies, the positioning assembly includes two V-shaped positioning blocks (10), the positioning block (10) is detachably linked with bottom plate (5) through screw (14), a plurality of support columns (15) are respectively arranged on both sides of bottom plate (5), a plurality of support columns (15) are arranged below fork arm (12) and fork clamping mouth (13) respectively, the third extrusion assembly (4) for pressing the junction of fork head (11) and fork arm (12) is equipped on bottom plate (5).
2. The fork machining positioning tooling of claim 1, wherein, The first pressure assembly (2) includes a first pressing plate (23), a first screw rod (21), and a locking nut (22), the lower end of the first screw rod (21) is connected with the bottom plate (5), the first pressing plate (23) is sleeved on the first screw rod (21), the locking nut (22) is installed on the first screw rod (21), and the two sides of the first pressing plate (23) are pressed on the support plate (6) and the pressing fork (1) respectively.
3. The fork machining positioning tooling of claim 2, wherein, The second extrusion assembly (3) includes a second pressing plate (32), a second screw rod (33), a locking nut (22), and two positioning plates (31), the two positioning plates (31) are symmetrically installed on the middle position of the bottom plate (5), the lower end of the second screw rod (33) is installed on the bottom plate (5) between the two positioning plates (31), the second pressing plate (32) is sleeved on the second screw rod (33), the locking nut (22) is installed on the second screw rod (33), and the two sides of the second pressing plate (32) are pressed on the two fork arms (12) respectively.
4. The fork machining positioning tooling of claim 3, wherein, The bottom of the first pressing plate (23) and the second pressing plate (32) is provided with a small boss (9) on both sides, and the support plate (6) is provided with a support groove (16) matched with the small boss (9).
5. The fork machining positioning tooling of claim 1, wherein, The third extrusion assembly (4) includes a third pressing plate (41), a balance column (43), a third screw rod (42), and a locking nut (22), the third screw rod (42) and the balance column (43) are installed on the bottom plate (5), the third pressing plate (41) is arranged on the third screw rod (42), the locking nut (22) is installed on the third screw rod (42), and the two sides of the third pressing plate (41) are pressed on the fork arm (12) and the balance column (43) respectively.
6. The fork machining positioning tooling of claim 1, wherein, The top of the support column (15) is provided with a boss (7), and the top of the boss (7) is provided with a small taper (8).