冲压设计的探讨.doc

JIU JIANG UNIVERSITY 课程设计 题 目 “垫板”零件冲压工艺及模具设计 院 系 机械与材料工程学院 专 业 模具设计与制造 姓 名 彭清辉 年 级 2012级(B1252) 指导教师 谢玉敏 2014年 5月 目 录 第一章 绪 论···························1 第二章 冲压件工艺性分析及工艺方案的确定··············3 2.1 冲压件工艺分析························ 3 2.2 冲压工艺方案的确定······················3 2.2.1 模具结构形式的确定····················4 第三章 冲压工艺计算························ 5 3.1 排样设计与计算························5 3.1.1 搭边值的确定·······················5 3.1.2 排???方案的选择······················6 3.2 冲压力的计算·························7 3.2.1 落料力··························7 3.2.2 冲孔力··························7 3.2.3 卸料力··························7 3.2.4 推件力··························8 3.2.5 压力机的初步选定·····················8 3.3 压力中心的确定························8 3.4 工作零件刃口尺寸计算·····················8 3.4.1 间隙值的确定·······················9 3.4.2 工作零件刃口尺寸的计算··················10 第四章 模具总体设计及部分零件设计················11 4.1工作零件的结构设计······················11 4.1.1 凸模的结构设计·····················11 4.1.2 凹模的结构设计·····················11 4.1.3 凸凹模的结构设计····················12 4.2 卸料零件的设计························13 4.3 模架的选用··························14 4.4 冲裁模闭合高度的校核·····················15 4.5 定位零件的设计························15 4.6 模柄的选用··························16 第五章 结 束 语·························17 致谢 参考文献···························18  PAGE \* MERGEFORMAT 16 绪论 冲压是在室温下利用安装在压力机上的模具对材料施加压力使其产生分离或塑性变形 从而获得所需零件的一种压力加工方法。而我们把在冲压加工中将材料金属或非金属加 工成零件或半成品的一种特殊工艺设备称为冲压模具俗称冲模。冲模可根据工艺性质 和工序组合程度分类其中按照工艺性质可分为:冲裁模、弯曲模、拉深模、成形模根据工 序组合又可分为单工序模、复合模、级进模。 模具作为高效率的生产工具的一种是工业生产中使用极为广泛与重要的工艺装备。采用 模具生产制品和零件具有生产效率高可实现高速大批量的生产节约原材料实现无切屑 加工产品质量稳定具有良好的互换性操作简单对操作人员没有很高的技术要求利用 模具批量生产的零件加工费用低所加工出的零件