资料包包含4张CAD图纸,工序卡一套,工艺过程卡一张,说明书一份 目 录 摘 要·································································································· 2 前言····································································································· 5 一.零件的分析······················································································· 6 1.1零件的作用············································································· 6 1.2 零件的工艺分析······································································ 6 二. 工艺规程设计·················································································· 8 2.1确定毛坯的制造形式································································ 8 2.2 确定定位基准········································································· 8 2.2.1粗基准的选择···································································· 8 2.2.1精基准选择的原则······························································ 8 2.3工艺路线的拟订····································································· 10 2.3.1工序的合理组合······························································· 10 2.3.2工序的集中与分散···························································· 11 2.3.3加工阶段的划分······························································· 12 2.4 机械加工余量、工序尺寸及毛坯尺寸的确定······························ 14 2.5 确定切削用量及基本工时······················································· 15 三.拉键槽夹具设计············································································· 23 3.1 夹具的夹紧装置和定位装置···················································· 23 3.2夹具的导向··········································································· 24 3.3切削力及夹紧力的计算··························································· 25 3.4定位误差的分析····································································· 29 3.5夹具设计及操作的简要说明····················································· 32 总 结·································································································· 33 参考文献····························································································· 34 致 谢·································································································· 35