Rectification method for improper flanging angle and uneven flanging surface of automobile L-shaped stamping parts

Abstract

The invention discloses a correcting method of misplacement of a flanging angle and unevenness of a flanging face of an automotive L-shaped stamping part. According to the method, a negative angle is avoided in the subsequent correcting by rotating a process angle and reserving a rebounding process remainder, and the right placement and the subsequent correctable property of the flanging angle are guaranteed; and through the improvement of the structure of a die, a workpiece is totally located in a female groove, the flanging face is uniformly stressed in the same direction in the flanging process, and the evenness of the flanging face is guaranteed, so that the precision of the stamping part is guaranteed.

Description

technical field [0001] The invention relates to a rectification method for automobile stamping parts, in particular, the invention relates to a rectification method for improper flanging angle and uneven flanging surface of L-shaped stamping parts of automobiles. Background technique [0002] At present, L-shaped stamping parts on automobiles, such as longitudinal beams and small brackets, need to be stamped on stamping dies. During the assembly process of the L-shaped stamping parts, because there is no process rotation angle on the flanging angle during the stamping process, the flanging angle of the L-shaped stamping parts is not in place, resulting in an excessively large matching gap during the assembly process, which affects the welding quality; and , The L-shaped stamping parts after stamping still have the problem of uneven flanging surface. Due to the limitation of the mold structure, the subsequent fatigue in the mold rectification process leads to the problem of u...

AI Technical Summary

Problems solved by technology

During the assembly process of the L-shaped stamping part, because there is no process rotation angle on the flanging angle during the stamping process, the flanging angle of the L-shaped stamping part is not in place, resulting in an excessively large matching gap during the assembly process, which affects the welding quality; and , the L-shaped stamping parts after stamping still have the problem of uneven flanging surface. Due to the limitation of the mold structure, the follow-up fatigue in the mold rectification process leads to the problem of uneven flanging surface of the L-shaped stamping parts that cannot be solved.

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