垫片少废料复合模的设计说明书.doc

课 程 设 计 说 明 书 题 目： 拖拉机用垫片的成型工艺与 模具设计 课 程： 冲压工艺及模具设计 院 （部）： 机电工程学院 专 业： 机械工程及自动化 班 级： 机本05成型 学生姓名： 王森 学 号： 指导教师： 完成日期： 2008年1月18日 目 录 摘 要···································································3 1 零件的工艺性分析·····················································3 2 确定工艺方案·························································3 3 工艺计算 3.1 计算工艺力···························································· 4 3.2确定排样形式和裁板·····················································5 3.3 材料利用率···························································· 6 4 压力中心确定，压力机选择 4.1 压力中心确定························································· 6 4.2 压力机选择··························································· 7 5模具设计 5.1 确定模具结构························································· 6 5.2 模具零件尺寸计算与确定················································ 6 6 模具其他零件的选用 6.1卸料弹簧的选择······················································· 6 6.2 选择上下模板及模柄···················································· 6 6.3 垫板凸模固定板························································ 6 6.4 闭合高度····························································· 6 6.5 导柱、导套····························································· 6 6.6 卸料螺钉····························································· 6 7 参考资料·····························································11 摘要 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。冲压模具在冷冲压加工中，将材料（金属或非金属）加工成零件（或半成品）的一种特殊工艺装备，称为冷冲压模具（俗称冷冲模）。冲压模具是冲压生产必不可少的工艺装备，是技术密集型产品。冲压件的质量、生产效率以及生产成本等，与模具设计和制造有直接关系。模具设计与制造技术水平的高低，是衡量一个国家产品制造水平高低的重要标志之一，在很大程度上决定着产品的质量、效益和新产品的开发能力。 一