A blanking production technology of the motorcycle bulb was analyzed, and a set of progressive blanking die was designed for the shell.

分析了一种摩托车大灯灯泡前金属外壳的冲压生产工艺，设计了一套级进冲压模具。

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Through analyzing the forming process of the comer pull buckle part, designed a cutting-bending-blanking progressive die. And introduced die working principle.

通过对转角拉扣五金零件的工艺分析，设计了一款切折弯曲落料级进模，同时对模具工作过程作了介绍。

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Use constructional type of progressive dies, change present one step operation of single die construction for two-step blanking, i. e, first step semi-blanking, second ejecting material.

用级进模结构形式，改现行简单模结构的一工步操作的冲裁为两工步操作：第一工步为半冲裁，第二工步为推料。

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