一种差速器壳法兰孔加工工装
By designing a machining fixture for the differential housing flange hole, and utilizing a self-contained journal positioning and axial clamping structure, the problems of low efficiency and wear of positioning holes in traditional fixtures are solved, enabling efficient mass production and precise machining.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DUJIANGYAN JIANXING MACHINERY CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional differential housing flange hole machining tooling is inefficient and cannot meet the needs of mass production. Furthermore, manual disassembly causes wear and deformation of the positioning holes, affecting machining accuracy.
Design a tooling for machining flange holes in differential housings. It uses a support platform and a positioning and lifting assembly, and utilizes the upper and lower journals of the differential housing for positioning. Combined with axial clamping and radial constraints, it enables simultaneous clamping and automatic disassembly of four differential housings, avoiding wear of the positioning holes by radial forces.
It improves processing efficiency, ensures the accuracy of flange holes and the long-term accuracy of positioning holes, avoids wear and deformation of positioning holes, and is suitable for mass production.
Smart Images
Figure CN224509095U_ABST
Abstract
Claims
1. A tooling for machining flange holes in a differential housing, comprising a differential housing body (1), wherein a flange (101) is fixedly connected to the outer end of the differential housing body (1), an upper journal (102) is provided at the top end of the differential housing body (1), a lower journal (103) is provided at the bottom end of the differential housing body (1), and a locking pin hole (104) is provided at the outer end of the differential housing body (1), characterized in that: It also includes a clamping device for simultaneously clamping several differential housing bodies (1); The clamping device includes a support platform (2) and a base plate (3). The top of the support platform (2) is provided with several positioning holes (4). The inner wall of the positioning holes (4) abuts against the outer circular surface of the differential housing body (1). Each positioning hole (4) is provided with several support pads (5) arranged at fixed intervals around its circumference. Several support pads (5) are fixedly connected to the top of the support platform (2). A clearance gap is formed between each two adjacent support pads (5) for the drill bit to avoid the flange (101) after drilling through it. The top of the base plate (3) is fixedly connected with a positioning lifting assembly. The positioning lifting assembly clamps and centers the differential housing body (1) in the locked state and pushes the differential housing body (1) out of the positioning hole (4) in the released state.
2. The differential case flange hole machining tooling fixture of claim 1, wherein: The positioning and lifting assembly includes a locking rod (6) fixedly connected to the base plate (3). The outer end of the locking rod (6) is threaded with a locking nut (7). The outer end of the locking rod (6) is slidably connected with a locking ring (8). The top end of the locking ring (8) abuts against the locking nut (7), and the bottom end of the locking ring (8) abuts against the end face of the upper journal (102).
3. The differential case flange hole machining tooling fixture of claim 2, wherein: The top of the base plate (3) is fixedly connected to a positioning inner ring (9) and a positioning outer ring (10). The outer wall of the positioning inner ring (9) is slidably connected to the inner wall of the lower journal (103). The inner wall of the positioning outer ring (10) is slidably connected to the outer wall of the lower journal (103). The outer wall of the positioning outer ring (10) is slidably connected to a lifting sleeve (11). The top of the lifting sleeve (11) is fixedly connected to a lifting ring (12). The top of the positioning outer ring (10) abuts against the bottom of the lifting ring (12). The outer wall of the positioning outer ring (10) is slidably connected to a lifting spring (13). The top of the lifting spring (13) abuts against the lifting ring (12), and the bottom of the lifting spring (13) abuts against the base plate (3).
4. The differential case flange hole machining tooling fixture of claim 3, wherein: The bottom end of the lifting ring (12) is fixedly connected with several circumferentially evenly distributed guide rods (14), and the bottom end of the base plate (3) is provided with several stepped countersunk holes (15) coaxial with the guide rods (14). The guide rods (14) pass through the stepped countersunk holes (15), and the bottom end of the guide rods (14) is fixedly connected with limit nuts (16).
5. The tooling for machining the flange hole of a differential housing according to claim 1, characterized in that: It also includes a positioning component, which includes several rectangular grooves (17) opened at the bottom of the support platform (2). An directional block (18) is snapped into the inner wall of the rectangular groove (17). The directional block (18) is fixedly connected to the support platform (2) by bolts (19). An arc plate (20) is fixedly connected to the outer end of the directional block (18). A positioning pin (21) is fixedly connected to the top end of the arc plate (20). The positioning pin (21) is located in the locking pin hole (104).
6. The differential case flange hole machining tooling fixture of claim 2, wherein: The top of the support platform (2) and the bottom of the base plate (3) are provided with a number of countersunk holes (22). A fixing sleeve (23) is provided between the support platform (2) and the base plate (3) at the position corresponding to the countersunk hole (22). The support platform (2) and the fixing sleeve (23), and the base plate (3) and the fixing sleeve (23) are all fixedly connected by fastening screws (24).