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nload theyard lumber 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扣耳模具设计与制造方面……………………………………………………3 1.3.1扣耳模具设计的设计思路……………………………………………………4 1.3.2扣耳冲孔落料弯曲件模具设计的进度………………………………………4 2整体零件的工艺性分析…………………………………… 5 2.1冲压件的工艺分析………………………………………………………………5 2.2工艺方案的确定…………………………………………………………………5 3冲压工艺计算……………………………………………………………………7 3.1排样设计…………………………………………………………………………7 3.2计算凸凹模刃口尺寸……………………………………………………………8 3.2.1冲孔凸凹模刃口尺寸的计算……………………………………………………8 3.2.1外形落料凸凹模刃口尺寸的计算………………………………………………8 3.2.3冲压力的计算……………………………………………………………………9 3.2.4压力中心的计算…………………………………………………………………9 4模具总体设计………………………………………………………………………11 5主要结构件的设计…………………………………………………………………12 5.1凸模、凹模、凸凹模的结构设计………………………………………………12 5.1.1落料凹模的结构设计……………………………………………………………12 5.1.2冲孔凸模的设计…………………………………………………………………12 5.1.3凸凹模的结构设计………………………………………………………………12 5.2弹性元件的设计…………………………………………………………………12 5.3模架的设计………………………………………………………………………13 6冲压设备的选择……………………………………………………………………14 7弯曲模具的设计……………………………………………………………………15 7.1弯曲件的工艺分析………………………………………………………………15 7.2工艺方案的确定…………………………………………………………………15 7.3弯曲工艺计算……………………………………………………………………15 7.3.1凸模圆角半径的计算……………………………………………………………15 7.3.2凹模圆角半径的计算……………………………………………………………15 7.3.3凹模工作部分深度的计算………………………………………………………15 7.3.4凸凹模间隙的计算………………………………………………………………15 7.3.5凸凹模横向尺寸及公差的计算…………………………………………………15 7.3.6弯曲件回弹值的计算……………………………………………………………16 7.3.7弯曲力的计算……………………………………………………………………16 7.4初选压力机………………………………………………………………………17 8弯曲模的总体设计…………………………………………………………………20 9模具的装配调试……………………………………………………………………21 9.1冲裁模的装配与调试要点………………………………………………………21 9.2调试………………………………………………………………………………22 9.3调试时出现的问题及调整方法…………………………………………………22 9.4装配其他零件及试模……………………………………………………………24 10模具总装图…………………………………………………………………………25 结束语…………………………………………………………………………………27 致谢……………………………………………………………………………………28 参考文献………………………………………………………………………………29