Shifting fork type part drilling and milling combined machining clamp
By designing a drilling and milling compound machining fixture for shift fork parts, and utilizing floating V-blocks and pneumatic clamping devices, the problem of inconsistent datums in CNC machining of shift fork parts was solved, enabling rapid positioning and efficient machining of multiple processes, improving machining accuracy and reducing costs.
Patent Information
- Application Number
- CN202423059198.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-12
AI Technical Summary
In CNC machining, fork-type parts suffer from inconsistent references due to multiple clamping operations, which affects machining accuracy and efficiency. Furthermore, changing fixtures is cumbersome and increases costs.
Design a fork-type part drilling and milling composite machining fixture, which adopts floating V-blocks, pneumatic clamping device and manual clamping device to realize multiple process machining in one clamping. The combination of pneumatic and manual clamping methods improves positioning accuracy and clamping speed.
It enables rapid positioning and clamping of shift fork parts, reduces multiple clamping and alignment steps, improves machining accuracy and efficiency, and reduces costs.
Smart Images
Figure CN223629890U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to mechanical processing technical field relates to a kind of fork type part drilling and milling composite processing fixture, for the positioning clamping of fork type part in numerical control processing. BACKGROUND
[0002] Fork type part is often used in variable speed system, and specific use occasion includes automobile gearbox and machine tool variable speed device etc..In the processing of fork type part, different characteristics of workpiece often need to replace the clamping mode of workpiece to achieve processing requirement.The operation process of frequent replacement of fixture is very tedious, and during the replacement process of fixture, there can be phenomena such as non-uniformity of reference, which directly affects the production efficiency, processing cost and precision of product etc..
[0003] To improve the processing efficiency of fork type part while maintaining the processing precision of part, a kind of fork type part drilling and milling composite processing fixture is proposed, to solve the problems of non-uniformity of reference, low processing precision etc.
[0004] Therefore, a kind of fork type part drilling and milling composite processing fixture is designed, which is used for the rapid positioning and clamping of fork type part, realizes the completion of multiple process machining by one clamping, is easy to operate, and is fast in clamping efficiency, which is beneficial to improve the processing precision and processing efficiency of part. SUMMARY
[0005] The technical scheme adopted by the utility model is as follows:
[0006] A kind of fork type part drilling and milling composite processing fixture, including bottom plate 1, first positioning plate 2, second positioning plate 3, floating V-shaped block 4, pneumatic clamping device 5, manual clamping device 6;Bottom plate 1 is L-shaped plate, bottom plate 1 is fixedly installed on numerical control machine tool, and 2 U-shaped waist grooves are provided on horizontal plate, and 2 U-shaped waist grooves are provided on vertical plate;First positioning plate 2 is fixedly connected with the vertical plate of bottom plate 1;Second positioning plate 3 is fixedly connected with the horizontal plate of bottom plate 1;
[0007] Floating V-shaped block 4 mainly includes V-shaped block 4-1, guide pillar 4-2, spring 4-3, support plate 4-4, nut 4-5 and screw 4-6;Guide pillar 4-2 is fixedly connected with support plate 4-4 by screw 4-6, V-shaped block 4-1 is provided with through hole on both sides and cooperates with guide pillar 4-2, spring 4-3 is distributed between the top surface of support plate 4-4 and the lower bottom surface of V-shaped block 4-1 along guide pillar 4-2, nut 4-5 is connected with guide pillar 4-2, and support plate 4-4 is fixedly installed with bottom plate 1 by positioning pin 4-7;
[0008] The pneumatic clamping device 5 mainly comprises a pneumatic cylinder 5-1, an extension rod 5-2 and a pressing block 5-3; the pneumatic clamping device 5 is fixed on the vertical plate of the base plate 1, the pneumatic cylinder 5-1 is connected with the extension rod 5-2, and the pressing block 5-3 is fixedly connected with the extension rod 5-2.
[0009] The manual clamping device 6 comprises a handle 6-1, a connecting rod 6-2, a rocker 6-3 and a base 6-4; the base 6-4 is fixed on the base plate 1, the handle 6-1 is hingedly connected with the base 6-4 and can rotate around the hinge point, the connecting rod 6-2 is hingedly connected with the handle 6-1 and the rocker 6-3 and can rotate around the hinge point, and the rocker 6-3 is hingedly connected with the base 6-4 and can rotate around the hinge point.
[0010] The fork type part drilling and milling composite machining clamp has the advantages of accurate positioning, rapid clamping, one-time clamping for machining multiple processes and the like, avoids the problems of multiple clamping and alignment of fork type parts in different processes, and reduces the influence of non-coincidence of the reference and machining precision caused by machining different positions of the same workpiece. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 The utility model discloses a structure diagram.
[0012] Figure 2 The utility model discloses a floating V-shaped block diagram.
[0013] Figure 3 The utility model discloses a manual clamping device diagram.
[0014] Figure 4 The utility model discloses a pneumatic clamp diagram.
[0015] Figure 5 The utility model discloses a fork structure diagram. DETAILED DESCRIPTION
[0016] The utility model will be explained in detail below combining with the drawings and specific embodiment.
[0017] As Figure 1 A fork type part drilling and milling composite machining clamp, comprising a base plate 1, a first positioning plate 2, a second positioning plate 3, a floating V-shaped block 4, a pneumatic clamping device 5 and a manual clamping device 6.
[0018] The base plate 1 is an L-shaped plate, is fixedly installed on a numerical control machine tool, is provided with two U-shaped waist grooves on the horizontal plate, is provided with two U-shaped waist grooves on the vertical plate, the first positioning plate 2 is fixedly connected with the vertical plate of the base plate 1, and the second positioning plate 3 is fixedly connected with the horizontal plate of the base plate 1.
[0019] The floating V-shaped block 4 comprises a V-shaped block 4-1, a guide column 4-2, a spring 4-3, a support plate 4-4, a nut 4-5 and a screw 4-6; the guide column 4-2 is fixedly connected with the support plate 4-4 through the screw 4-6, the V-shaped block 4-1 is provided with through holes on both sides and cooperates with the guide column 4-2, the spring 4-3 is distributed between the upper surface of the support plate 4-4 and the lower surface of the V-shaped block 4-1 along the guide column 4-2, the nut 4-5 is connected with the guide column 4-2, and the support plate 4-4 is fixedly installed with the bottom plate 1; through the spring force, the V-shaped block 4-1 is always kept in contact with the outer circular surface of the part, the center axis is positioned, in the clamping process, the V-shaped block 4-1 is subjected to the downward pressure and transmits the downward pressure to the spring 4-3, the spring 4-3 is forced to move downward to make the V-shaped block 4-1 move along the guide column 4-2 in the axial direction, so that the axial freedom along the guide column is released, and over-positioning is avoided.
[0020] The pneumatic clamping device 5 comprises a pneumatic cylinder 5-1, a telescopic rod 5-2 and a pressing block 5-3; the pneumatic clamping device 5 is fixed on the vertical plate of the bottom plate 1, the pneumatic cylinder 5-1 is connected with the telescopic rod 5-2, and the pressing block 5-3 is fixedly connected with the telescopic rod 5-2; in the working process, the position of the telescopic rod 5-2 is controlled by controlling the start and stop of the pneumatic cylinder 5-1, and the pressing block 5-3 indirectly controls the pressing of the workpiece.
[0021] The manual clamping device 6 comprises a handle 6-1, a connecting rod 6-2, a rocker 6-3 and a base 6-4; the base 6-4 is fixed on the bottom plate 1, the handle 6-1 is hingedly connected with the base 6-4 and can rotate around the hinge point, the connecting rod 6-2 is hingedly connected with the handle 6-1 and the rocker 6-3 and can rotate around the hinge point, and the rocker 6-3 is hingedly connected with the base 6-4 and can rotate around the hinge point; in the working process of the clamping device, the handle 6-1 is manually controlled to rotate, the connecting rod 6-2 is driven to rotate, the handle 6-1 and the connecting rod 6-2 are located on the same straight line, the manual clamping device 6 is located at the dead point position, and the rocker 6-3 clamps the workpiece.
[0022] In use, the clamp body is fixedly installed on the milling machine working platform through the U-shaped waist groove on the bottom plate 1, the workpiece 7 is vertically placed on the upper surface of the second positioning plate 3, the left end plane of the workpiece 7 is in contact with the first positioning plate 2, the floating V-shaped block 4 is in contact with the outer circle of the workpiece 7 under the action of the spring and realizes the positioning of the central shaft, so that the complete positioning of the workpiece 7 is realized, the workpiece 7 is clamped through the pneumatic clamping device 5 and the manual clamping device 6; after the drilling and machining of the workpiece 7 are completed, the entire clamp body can be turned over, the vertical plate of the bottom plate 1 is fixedly connected with the drilling machine working table, the workpiece 7 is drilled and machined without changing the tool position; after the machining is completed, the pneumatic clamping device 4 and the manual clamping device 6 are cancelled for clamping, the workpiece 7 is taken down, and the machining is completed.
Claims
1. A shift fork type part drilling and milling combined machining jig, characterized by: It includes six parts of bottom plate (1), first positioning plate (2), second positioning plate (3), floating V-shaped block (4), pneumatic clamping device (5), manual clamping device (6); the bottom plate (1) is an L-shaped plate, and the bottom plate (1) is fixedly installed on the numerical control machine tool, and two U-shaped waist grooves are arranged on the horizontal plate, and two U-shaped waist grooves are arranged on the vertical plate; the first positioning plate (2) is fixedly connected with the vertical plate of the bottom plate (1); the second positioning plate (3) is fixedly connected with the horizontal plate of the bottom plate (1).
2. The yoke type part drilling and milling combined machining fixture according to claim 1, characterized in that: The floating V-shaped block (4) includes a V-shaped block (4-1), a guide column (4-2), a spring (4-3), a support plate (4-4), a nut (4-5) and a screw (4-6); the guide column (4-2) is fixedly connected with the support plate (4-4) through the screw (4-6), the V-shaped block (4-1) is provided with through holes on both sides and cooperates with the guide column (4-2), the spring (4-3) is distributed between the top surface of the support plate (4-4) and the lower bottom surface of the V-shaped block (4-1) along the guide column (4-2), the nut (4-5) is connected with the guide column (4-2), and the support plate (4-4) is fixedly installed on the bottom plate (1) through the positioning pin (4-7).
3. The yoke type part drilling and milling combined machining fixture according to claim 1, characterized in that: The pneumatic clamping device (5) includes a cylinder (5-1), a telescopic rod (5-2) and a pressing block (5-3); the pneumatic clamping device (5) is fixed on the vertical plate of the bottom plate (1), the cylinder (5-1) is connected with the telescopic rod (5-2), and the pressing block (5-3) is fixedly connected with the telescopic rod (5-2).
4. The yoke type part drilling and milling combined machining fixture according to claim 1, characterized in that: The manual clamping device (6) includes a handle (6-1), a connecting rod (6-2), a rocker (6-3) and a base (6-4); the base (6-4) is fixed on the bottom plate (1), the handle (6-1) is hingedly connected with the base (6-4) and can rotate around the hinge point, the connecting rod (6-2) is hingedly connected with the handle (6-1) and the rocker (6-3) and can rotate around the hinge point, and the rocker (6-3) is hingedly connected with the base (6-4) and can rotate around the hinge point.