目 录 前言 · 1．设计课题及任务书································1 1．1 设计课题·······································1 1．2 设计任务书····································2 2． 工艺方案分析及确定····························3 2．1 件的工艺分析··································3 2．2 工艺方案的确定································4 2．3 排样图的确定···································4 3． 艺设计与计算·····································6 3．1 冲裁的方式与冲压力的计算····················6 3．2 计算各主要零件的尺寸·························9 结束语 ··············································23 参考文献 ···········································24 致谢·················································25 
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