A punch press blanking machine

By adopting a linkage design between a swing blade holder and a deflectable vertical guide rail in the shearing machine, the problems of shearing accuracy and cut quality are solved, achieving high-precision shearing and low-burr effect, and improving the processing quality and efficiency of thick plates and high-strength steel.

CN121847857BActive Publication Date: 2026-05-26HUNAN TIEHUA JINGFU AUTOMOBILE GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUNAN TIEHUA JINGFU AUTOMOBILE GRP CO LTD
Filing Date
2026-03-17
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing swing plate shearing machines have problems with shearing accuracy and cut quality control. Especially when shearing thick plates or high-strength steel, the force on both sides of the cut is uneven, which can easily cause edge collapse and cut tilting. In addition, the blade scrapes the plate during the return stroke, forming burrs, which affects the accuracy and efficiency of subsequent processing.

Method used

The shearing machine is designed with a swing blade holder and a deflectable vertical guide rail. During the shearing stage, the vertical guide rail is held against the limit block to maintain a vertical state, ensuring that the upper blade cuts vertically. During the return stage, the guide rail deflects slightly to allow the upper blade to detach from the sheet metal, avoiding the formation of burrs on the cut.

Benefits of technology

It significantly improves shearing accuracy, eliminates edge collapse and cut tilt defects during the shearing of thick plates and high-strength steel, and improves the quality of plate cuts and subsequent processing efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a stamping shearing machine, relating to the field of shearing machine technology. It includes a frame, a swing assembly comprising a swing blade holder rotatably connected to the middle of the inner side of the frame, a first optical axis fixedly connected to the side of the swing blade holder facing the loading platform, multiple short rods rotatably connected to the first optical axis at uniform intervals along the first optical axis, and main hydraulic cylinders fixed to both sides of the frame for driving the swing blade holder to perform arc swinging. A movable blade assembly includes a blade holder located inside the upper part of the frame, and vertical guide rails slidably connected to both ends of the blade holder. Power is transmitted through the swing blade holder driving the short rods. During the shearing stage, the horizontal component of the force transmitted by the short rods pushes the lower end of the vertical guide rail against a limiting block, ensuring shearing accuracy and cut smoothness. During the return stage, the horizontal component of the force transmitted in the opposite direction by the short rods pulls the lower end of the vertical guide rail away from the limiting block, preventing blade scraping during the return stroke and effectively reducing burrs and debris adhesion.
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