Optimization and control method of stamping process for high-strength integral side wall of passenger car

Abstract

The invention discloses an optimized adjustment and control method of a passenger vehicle high-strength integral side body stamping technology. The method comprises the steps that S1, an integral sidebody is divided into a local complex difficult-to-form structure, a local sharp difficult-to-form structure, a peripheral arc-shaped flanging structure and an inner hole arc-shaped flanging structure; S2, the blank holder face of the local complex difficult-to-form structure is divided into three blank pressing regions to be subjected to sectioning blank pressing operation, and oil mist lubrication is adopted by a female and male die side wall region and a female and male die circular corner region; S3, the region, located on the periphery of the local sharp difficult-to-form structure, of ablank is determined to serve as a local temperature control position, and local temperature control is conducted; S4, drawing beads are designed according to the curvature and the drawing depth of anarc-shaped flanging portion of the peripheral arc-shaped flanging structure, and a first material storage chamber is designed; and S5, technological holes are designed according to the curvature and the drawing depth of an arc-shaped flanging portion of the inner hole arc-shaped flanging structure, and a second material storage chamber is designed. The optimized adjustment and control method of the passenger vehicle high-strength integral side body stamping technology can achieve stamping forming of the high-strength integral side body, and prevents the local breakage defect from being generated.

Description

technical field [0001] The invention belongs to the technical field of stamping of automobile cover parts, relates to an optimization control method of stamping forming process of an automobile cover part, in particular to an optimization control method of a stamping process of a high-strength integral side wall of a passenger car. Background technique [0002] The overall side panel of a passenger car is the most difficult part to manufacture in the body panel. This is because the overall side wall is usually in the shape of a three-dimensional curved surface, and has a large volume and a complex structure, and is prone to forming defects such as cracking and wrinkling. Moreover, the overall side enclosure is an asymmetric outer cover in terms of geometric structure, and the edge surface is adjacent to multiple environmental parts, so the requirements for assembly accuracy and surface quality are extremely stringent. [0003] In addition, the overall side wall also has hig...

AI Technical Summary

Problems solved by technology

With the improvement of the strength of the overall side wall material, the rupture tendency of its local area with complex shape increases greatly, which increases the difficulty of process design and manufacturing of the side wall

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