There are many factors that influence the drawing process of automobile panels, such as the die face, blank properties, clearance between punch and die, the blank holder force, the blank shape, drawbeads, friction conditions and so on.
影响汽车覆盖件拉延成形的因素很多,如拉延型面、板料性能、凸凹模间隙、压边力大小、毛坯外形、拉深筋、摩擦润滑条件等等。
参考来源 - 汽车行李箱盖拉延毛坯设计及工艺优化·2,447,543篇论文数据，部分数据来源于NoteExpress
毛坯外形的设计是金属板料成形的重要环节。
According to sheet metal deep drawing processes, many design methods for the blank shape have been presented.
毛坯外形设计是工艺设计的重要环节，它直接影响工件的成形质量。
Blank design plays an important role in the process design of sheet metal drawing due to its great impact on the formability of a part.
因此，我们必须寻找一种合理的低盒形件毛坯外形计算和设计方法，来保证板料的成形质量，从而提高经济效益。
So we must find a logical calculation method and design model for shallow square boxes in order to guarantee the forming quality and improve the economic performance.
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