北华大学学士学位论文目录第一章绪论...........................................................................................................31．1冲压技术发展和国内外现状...................................................................31．2冷冲压的特点...........................................................................................5第二章设计任务及工艺性分析...........................................................................62．1设计任务...................................................................................................62．2工件工艺性分析.......................................................................................7第三章汽车离合器压盘盖单工序拉深模设计..................................................93．1拉深工艺及计算.......................................................................................93．1．1确定修边余量..............................................................................93．1．2拉深件毛坯尺寸的确定............................................................103．1．3判断是否采用压边装置............................................................113．1．4拉深系数和次数的决定............................................................123．1．5凸、凹模工作部分的尺寸........................................................153．1．7拉深力的计算............................................................................183．1．8拉深功........................................................................................213．1．9压力中心的确定?....................................................................223．2模具结构设计.........................................................................................233．2．1模具草图的绘制........................................................................233．2．2工作零部件的结构设计............................................................243．2．3模具结构型式的确定................................................................283．3冲压设备的选择....................................................................................293．3．1冲压设备的选用原则................................................................293．3．2冲压设备的确定..............................