Special fixture for machining differential housing half shaft hole
By designing the centering mechanism of the hydraulic clamp and the centering vise, the problem of inaccurate centering caused by changes in part size during the machining of the differential housing half-shaft hole was solved, achieving efficient dynamic centering and improving product qualification rate and production efficiency.
CN122274703APending Publication Date: 2026-06-26SHIYAN TAIXIANG INDAL
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Patent Information
- Application Number
- CN202411941618.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-06-26
AI Technical Summary
Technical Problem
The existing machining fixtures for the half-shaft holes at both ends of the differential housing cause uncertainty in the machining center when the part size changes, resulting in skewed half-shaft holes and affecting assembly and production efficiency.
Method used
A hydraulic clamp is used, including a clamp base, a centering mechanism, a centering vise, and a pre-positioning bracket. The stability of the clamping center is ensured by synchronously driving the hydraulic cylinder, thus achieving dynamic centering.
Benefits of technology
It improved the product qualification rate, saved processing costs, increased production efficiency, and ensured the consistency between the clamping center and the tool axis.
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Smart Images
Figure CN122274703A_ABST
Abstract
This invention relates to a special fixture for machining the half-shaft hole of a differential housing. It is a hydraulic fixture, comprising a fixture base and a centering mechanism, a centering vise, and a pre-positioning bracket mounted on the fixture base. The centering mechanism is located in the center of the fixture base. The centering vise has a pair symmetrically arranged on both sides of the centering mechanism, including a vise base and a pair of jaws that slide in contact with the vise base. The pair of jaws are driven by synchronous hydraulic cylinders to reciprocate along the base. The pre-positioning bracket has a pair symmetrically arranged between the centering mechanism and the pair of centering vises. This invention achieves dynamic centering as the part size changes, ensuring that the machining axis of the part and the tool are aligned. It overcomes the problem of inaccurate centering caused by changes in part size in traditional fixtures, greatly improving product qualification rate and production efficiency.
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