第页共NUMPAGES22页常州工学院毕业设计说明书题目：扬声器内磁盖模具设计课题：冲压工艺及模具设计院（部）：延陵学院专业：班级：学生姓名：学号：指导教师：完成日期：2008年6月10日目录TOC\o"1-3"\h\z\u绪论···································································32.1零件的工艺性分析·····················································32.2确定工艺方案的确定····················································33.1冲裁的间隙··················································43.2凸模凹模刃口尺寸的确定··········································53.3冲裁排样设计······················································83.4冲裁力114.1模具类型的选择···················································124.2定位方式的选择·····················································124.3卸料，出件方式的选择124.4主要零部件的设计··················································124.5模具模具总装图···············································134.6冲压设备的选定154.7冲压设备的校核·······················································155.1有凸缘圆筒型件的拉深················································165.2形成次数的确定······················································175.3工作部分尺寸的计算···················································185.4拉深模具的总体设计··················································185.5主要零件的设计·······················································195.6冲压设备的选定···················································195.7冲压设备的校核···················································195.8模具的装配···················································196参考资料·····························································20扬声器内磁盖模具设计第一章绪论随着我国汽车、摩托车、家电等工业的迅速发展，工业产品的外形在满足性能要求的同时，变得越来越复杂，而这些产品的制造离不开模具，这就要求模具制造行业以最快的速度、最低的成本、最高的质量生产出模具。为了达到上述要求，模具企业只有运用先进的管理手段和CAD/CAM集成制造技术，才能在激烈的市场竞争中立于不败之地。模具可以分为多种,如注塑模、冲压模等，随着制造工艺和塑料性价比的提高，冷冲模具在模具行业中占的比重越来越大，，本研究讨论的是一个喇叭磁盖模具设计的冷冲模具设计，在这过程中充分展示了计算机辅助建模和制造为模具的集成制造提供了优良的平台。第二章冲压工艺分析与确定2．1冲压件工艺性分析此工件有落料、冲孔、拉深三个工序，材料为Q235-A钢，具有良好的冲压性能，适合冲裁、拉深，工件结构简单，有6个φ4mm的孔，孔与孔、孔与边缘之间的距离也满足要求；该工件属于较典型圆筒形件拉深，形状简单对称，所有尺寸均为自由公差，对工件厚度变化也没有作要求。2．2冲压工艺方案的确定该工件包括落料、冲孔、拉深三个工序，可有以下三种工艺方案:方案一:先落料，后冲孔，最后拉深。采用单工序模生产。方案二:先