Cutting-off device and cutting-off method for high-strength complex-section cavity product

By using a cutting device and a segmented cutting method for high-strength complex cross-sectional cavity products, the cutting problem of high-strength complex cross-sectional cavity products has been solved, achieving efficient and defect-free cutting results, reducing production costs and improving production efficiency.

CN121945867APending Publication Date: 2026-05-01LINGYUN INDAL CORP
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Patent Information

Application Number
CN202610197963.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-11
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Traditional cutting methods are difficult to effectively cut high-strength, complex cross-sectional cavity products, resulting in defects such as cutting deformation, burrs, and cutting edge tearing. In addition, the tools wear out severely, affecting production efficiency and cost.

Method used

The cutting device for high-strength complex cross-sectional cavity products includes a height adjustment mechanism, an arc adjustment mechanism, and a follow-up mechanism. It combines vertical and horizontal cutting mechanisms and uses a two-stage cutting method in different areas to first cut the material strips on both sides of the product and then cut the middle reinforcing rib. A pre-punching process is used to reduce the cutting difficulty.

Benefits of technology

It enables efficient cutting of high-strength, complex cross-sectional cavity products, with no deformation or burrs after cutting, significantly improving cutting quality and production efficiency, extending tool life, and reducing production costs.

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Abstract

The invention provides a high-strength complex-section cavity product cutting device which comprises a height adjusting mechanism, a radian adjusting mechanism, a follow-up mechanism and a cutting unit which are sequentially arranged from bottom to top. The cutting-off unit comprises a vertical cutting-off mechanism used for cutting off material belts on the two sides of the cavity product and a horizontal cutting-off mechanism used for cutting off a reinforcing rib structure in the middle of the cavity product. The invention further provides a cutting-off method which comprises the following steps: pre-punching and cutting off a process hole in advance in a material belt before rolling forming, and integrally cutting off a cavity product by adopting a regional secondary cutting-off mode after rolling forming. Follow-up continuous cutting of high-strength complex section type cavity products can be achieved on a rolling line, the cutting efficiency is high, the quality is good, the product rework rate is greatly reduced, and the service life of a cutter is remarkably prolonged; the device is flexible to use and high in universality, and can be adapted to cold-bending profiles with various different section types through replacement of the standard cutting head.
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