机械毕业设计(论文)-Z形件级进模设计-冲压模具类(含全套图纸).doc

目 录 摘要······································································································1 关键词···································································································1 1 前言···································································································2 1.1 本设计的目的与意义····································································2 1.2 本课题在国内外发展概况及存在的问题··········································2 1.3 应该解决的主要问题及应达到的技术要求·······································4 2 零件的加工方法··················································································`4 2.1 零件工艺性分析········································································`4 2.2 工艺方案的制定·········································································5 2.2.1 模具的类型·······································································5 2.2.2 模具的零件········································································6 2.2.3 模具的形式········································································6 2.2.4 Z形件弯曲方案···································································9 3 工艺及排样图设计··············································································10 3.1 排样的注意事项·······································································11 3.2 冲压顺序·················································································12 3.3 排样方案·················································································13 4 材料利用率及方案比较·······································································15 4.1 材料利用率·············································································15 4.2 方案比较和选择·······································································16 5 工序计算···························································································17 5.1 总压力····················································································17 5.1.1 方案的各种力的计算······································