Some rules of processing pre-punched hole setting are summarized through the simulated results of two instances and the analysis of stress and strain for sheets.
通过对两个例子模拟结果和板料应力应变的分析，总结出了工艺预冲孔设置的一些规律。
The effect of processing pre-punched hole on the forming state of sheets is analyzed. Numerical simulation is applied to the study on processing pre-punched hole setting.
分析了工艺预冲孔对板料成形状态的影响，并把数值模拟引入工艺预冲孔设置的研究。
The drawing process for producing the part is completed in one operation, and a hole for machining use is pre-punched to control the magnitude of radial stress.
采用一次拉延成型，并在其底部预冲工艺孔，可控制径向应力的大小。
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