通过事例检索，设定了工艺补充面形状、拉延筋排布位置以及冲压方向等工艺参数；
The complementary surface is built through the method of index of similar event , the position of draw bead and stamping direction and others process parameters are made certain at the same time.
首先建立零件的拉延模型，从冲压方向、工艺补充面、压料面、坯料初始形状等方面进行设计分析。
Firstly, the stamping model of the part is built, and the design is focused on drawing direction, shape of addendum and blank-holder surface, initial shape of blank, and so on.
首先对常见的工艺补充面截面线类型进行分析，建立数学解析模型并进行参数化设计，并且给出特殊问题的处理方法。
At first, the section curves of addendum is analysed, mathematic analytic models are established, the parametric design is finished and method to deal with especial questions is presented.
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