Automobile rear wheel knuckle fork inner hole machining anti-deformation clamp

By designing angular positioning blocks and gripping patterns for the fixture, the problem of mismatch between the fixture and the U-groove of the steering knuckle fork was solved, achieving product stability and a high pass rate during processing.

CN224464191UActive Publication Date: 2026-07-07GLOBAL TEK (WUXI) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GLOBAL TEK (WUXI) CO LTD
Filing Date
2025-07-11
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

The existing fixture is not compatible with the U-shaped groove structure of the automotive rear wheel steering knuckle fork, which results in the clamping plane not fitting completely. This causes the hole to deform during product processing, affecting the positioning reference and product qualification rate.

Method used

A deformation-resistant fixture for machining the inner hole of a car rear wheel steering knuckle fork was designed. It uses angular positioning blocks and positioning grooves to cooperate with the U-shaped groove of the product, and achieves complete fit between the clamping surface and the product through the gripping texture of the gripper and the movable nail claw.

Benefits of technology

This effectively avoids deformation during internal hole machining and improves the product qualification rate.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses an anti-deformation fixture for machining the inner hole of a rear wheel steering knuckle fork in automobiles. It includes grippers and a mold base; the mold base is symmetrically arranged on a chuck, and corresponding grippers are provided on the mold base. The grippers are positioned opposite each other, forming a clamping position; angular positioning blocks are provided on the clamping surfaces of the grippers, and the angular positioning blocks are obliquely positioned. A positioning groove is provided on the outer periphery of the angular positioning blocks, and the structure of the positioning groove matches the U-shaped groove of the rear wheel steering knuckle fork in automobiles. The size of the angular positioning blocks is adapted to the inner cavity of the U-shaped groove; a mounting hole is provided in the positioning groove, and a gripping member is movably disposed in the mounting hole. The front end of the gripping member serves as a gripping surface, and gripping textures are provided on the gripping surface. This invention provides a product-specific positioning block and positioning groove on the gripper surface that are designed to fit the product structure, thereby limiting and fixing the product. Movable claws with gripping textures are installed in the mounting holes within the positioning grooves, ensuring a close fit between the gripper surface and the product. This guarantees product stability during processing, effectively prevents deformation during inner hole machining, and improves the product qualification rate.
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