A milling jig for hardware

By combining a cylinder-driven double-sided rack and spur gear system with an internal abutment component, the problem of workpiece skewing in metal parts milling fixtures is solved, enabling simultaneous clamping of the workpiece's inner and outer surfaces and improving machining accuracy.

CN224445362UActive Publication Date: 2026-07-03DONGGUAN HONGYE PRECISION MACHINING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN HONGYE PRECISION MACHINING CO LTD
Filing Date
2025-07-31
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing milling fixtures for hardware parts have a problem of workpiece tilting on one side during clamping, which affects machining accuracy.

Method used

The double-sided rack and pinion driven by the cylinder cooperates with the spur gear. The rotational force is transmitted to the bend plate through the connecting plate to achieve the outer surface clamping. The inner surface of the workpiece is stably clamped by the meshing of the inner abutment component such as the wedge-shaped tooth plate with the transmission tooth, ensuring that the inner and outer surfaces of the workpiece are subjected to force at the same time.

Benefits of technology

This allows for simultaneous clamping of the workpiece's inner and outer surfaces, preventing skewing and improving machining accuracy and stability.

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  • Figure CN224445362U_ABST
    Figure CN224445362U_ABST
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Abstract

The utility model relates to the technical field of fixture for part machining, specifically relates to a milling fixture for hardware parts. Its main for unable to force clamping simultaneously, the problem of workpiece one side skew appears, and the following technical scheme is proposed: including base, the upper surface fixed connection of base has the pneumatic cylinder, the pneumatic cylinder is cooperated with outer clamping subassembly, wherein, the outer clamping subassembly includes the double-sided rack of the pneumatic cylinder output end adaptation installation, the gear teeth of double-sided rack is engaged with spur gear, the utility model first spur gear passes through connecting plate, and the rotary force is given to the angle plate, and then under the support of stable seat, the angle plate occurs deflection, and the outer surface of workpiece is contacted and completes clamping, because the range of angle deflection of angle plate is larger, can carry out the stable outer surface clamping of workpiece of various volumes, and sets up the inner abutment component in the side of double-sided rack simultaneously, so that the inner surface of workpiece is subjected to the effect of inner abutment component.
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