Method for improving rigidity of drawing parts

Abstract

The invention provides a method for improving rigidity of drawing parts. Plate materials are subjected to drawing forming by means of a drawing die, dual drawing beads are arranged on the drawing die, a drawing bead which is close to a parting line is a first drawing bead, a drawing bead which is far from the parting line is a second drawing bead, a center distance L between the two drawing beads is 30mm to 50mm, the distance between the first drawing bead and the parting line L2 ranges from 15mm to 25mm, the size L3 of a plane portion between the two drawing beads is larger than 10mm, a plane between a die-entrance R angle of an upper die and the first drawing bead is an upper die management plane, the size of the upper die management plane is larger than 5mm, the drawing height of the drawing die is H3, and the drawing angle of the drawing die is A. according to the method for improving rigidity of the drawing parts, during drawing of the parts, different locking forces are achieved in different phases, and the condition that the parts have large locking forces during drawing so as to enable the plate materials to produce large deformations is guaranteed; during a late drawing phase, locking forces are reduced, feeding is easily performed, and the parts are not fractured, so that drawing rigidity of the pars is guaranteed in a maximum degree mode.

Description

technical field [0001] The invention relates to the field of automobile processing, in particular to a method for improving the rigidity of drawn parts. Background technique [0002] Under the background of the rapid development of the automobile industry and the diversification of demand, the appearance of automobiles is becoming more and more streamlined, and the design is also very individual. Since most of the automobile outer covering agents are drawn and stamped from steel plates at the present stage, when pursuing the fashion of the appearance, it poses a greater challenge to the design and production process of automobile molds. [0003] The concept of "stiffness" is widely used in the quality judgment of automobile outer panels. The so-called "stiffness" is the ability of sheet metal to resist external forces without elastic deformation when subjected to external forces. If the rigidity of the outer covering is insufficient, a series of serious appearance problems ...

AI Technical Summary

Problems solved by technology

If the rigidity of the outer cover is insufficient, a series of serious appearance problems such as collapse, pits, and surface waves will easily occur

The weirdness of the current car design has led to an increase in the difficulty of a large number of outer covering parts, and the stiffness of stretched stamping parts is insufficient.

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