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nch die 目录 1.绪论………………………………………………………………………………1 1.1国内模具的现状和发展趋势……………………………………………………1 1.2国外模具的现状和发展趋势……………………………………………………3 1.3手柄冲孔落料弯曲模具设计与制造方面………………………………………3 1.4手柄冲孔落料弯曲件模具设计的进度…………………………………………4 2.手柄工艺性分析……………………………………………………………………5 2.1手柄的工艺性分析……………………………………………………………5 2.2冲压工艺与工艺方案…………………………………………………………5 2.3工艺方案的确定………………………………………………………………6 3.主要工艺参数计算………………………………………………………………7 3.1毛坯尺寸的计算…………………………………………………………………7 3.2冲压力的计算及压力机的选用…………………………………………………8 3.3.初选压力机………………………………………………………………………9 3.4压力中心的确定及相关计算……………………………………………………10 4.模具主要零件和主要机构的设计与标准化………………………………………11 4.1工作零部件的设计与标准化…………………………………………………11 4.2定位装置的设计与标准化……………………………………………………18 4.3卸料装置的设计与标准化……………………………………………………21 4.4链接件的设设计与标准化……………………………………………………22 4.5手柄冲孔落料弯曲练习模总装图……………………………………………22 5.压力机的校核………………………………………………………………………24 结束语………………………………………………………………………………26 致谢…………………………………………………………………………………27 参考文献……………………………………………………………………28