Analyzed press technology characteristics of vent-windows of the car side board, designed a lancing-drawing compound die.
分析了车厢侧板零件通风窗冲压加工的工艺特点，设计了一副针对该零件加工的切口拉伸复合模。
This paper analyzed technological peculiarities on the step part, designed a drawing and extruding compound die. It can improve the part quality and benefit.
通过分析零件的工艺特点，设计了拉伸挤压复合模，不仅可提高零件质量，而且可提高生产效率。
The structure, main design parameters and work process of the compound die installed on single action press and working for blanking and drawing with constant blank holder pressure were presented.
介绍了用于单动压力机的新型恒压边力落料拉伸复合模的结构及主要设计参数和模具工作过程。
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