目 录
1 绪论-------------------------------------------------------------------------------------------------------------------1
1.1 冲压加工与模具设计简介-----------------------------------------------------------------------------1
1.2冷冲压与模具技术国内外发展现状----------------------------------------------------------------2
1.3 选题的意义--------------------------------------------------------------------------------------------------3
2 工艺分析、排样设计及方案对比确定-------------------------------------------------------------4
2.1 冲裁件工艺性分析----------------------------------------------------------------------------------------4
2.1.1 分析工件的技术要求-------------------------------------------------------------------------------5
2.1.2 零件材料的选用--------------------------------------------------------------------------------------5
2.1.3 零件的结构工艺性分析-----------------------------------------------------------------------------5
2.2 冲裁工艺方案的对比与确定--------------------------------------------------------------------------6
2.2.1 冲裁工序的组合--------------------------------------------------------------------------------------6
2.2.2 冲裁顺序的安排--------------------------------------------------------------------------------------7
2.2.3 工艺方案的比较--------------------------------------------------------------------------------------7
2.3 冲裁件排样设计-------------------------------------------------------------------------------------------8
2.3.1 排样方法-----------------------------------------------------------------------------------------------8
2.3.2 搭边值的选用-----------------------------------------------------------------------------------------9
2.3.3 条料宽度的确定-------------------------------------------------------------------------------------10
2.3.4 步距的确定-------------------------------------------------------------------------------------------11
2.3.5 材料利用率的确定----------------------------------------------------------------------------------11
3 冲压力及压力中心的确定------------------------------------------------------------------------------13
3.1 冲压力的计算---------------------------------------------------------------------------------------------13
3.2 压力中心的计算------------------------------------------------------------------------------------------15
3.3 压力机的选择---------------------------------------------------------------------------------------------16
3.3.1 冲压设备类型的选择-------------------------------------------------------------------------------16
3.3.2 确定压力机设备的规格----------------------------------------------------------------------------17
4 模具结构设计--------------------------------------------------------------------------------------------------18
4.1 冲裁间隙---------------------------------------------------------------------------------------------------18
4.1.1 冲裁间隙的影响-------------------------------------------------------------------------------------18
4.1.2 冲裁间隙的选用-------------------------------------------------------------------------------------19
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