介绍了焊片零件拉伸、冲裁多工位级进模，分析了零件的冲压工艺性，并对模具结构进行了合理的设计。

It introduced drawing, punching progressive dies for solder pieces and analyzed the processing ability of the component for stamping and punching. The structure of the die was designed reasonably.

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分析了小圆角圆筒件的成形工艺性，利用成本较低、塑性较差的角料，采用一次冲压工序完成二次拉伸的复合模。

Adopting once punching process and using fewer cost and worse plasticity leftover material finish twice drawing of compound die.

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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。

Analyzed press technology characteristics of vent-windows of the car side board, designed a lancing-drawing compound die.

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