Stamping forming defect and die debugging of automobile top cover
There are negative angles on both sides of a top cover,and the tail of the part needs to be sized with a large amount of forming after drawing,and the part is prone to wrinkling,cracking,and dimensional instability,which results in more die rectification and debugging.Based on the ex-perience,the cracking defect of the tail of the part was analyzed,starting from the size of the sizing amount and the thinning rate,the problem of the part defect was solved by improving the drawing draft angle and drawing rib resistance,increasing with wrinkle absorbing ribs and reducing in the positive pressure area in the wrinkling at the tail and the surface defects at the corner of the part,respectively.
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