目录摘要................................................................I（一）机械加工工艺规程设计..........................................1第一章手柄座的工艺分析及生产类型的确定.............................11．1手柄座的用途.................................................11.2手柄座的技术要求..............................................11.3审查手柄座的工艺性............................................21.3.1孔的加工...................................................21.3.2面的加工...................................................31.3.3槽的加工...................................................31.3.4螺纹孔的加工...............................................31.4确定手柄座生产类型............................................3第二章确定毛坯、绘制毛坯简图.......................................42.1选择毛坯......................................................42.2确定毛坯的尺寸公差和机械加工余量..............................4第三章拟定手柄座工艺路线...........................................53.1定位基准的选择................................................53.1.1精基准的选择..............................................53.1.2粗基准的选择...............................................53.2表面加工方法的确定............................................53.3加工阶段的划分................................................63．3．1粗加工阶段...............................................63．3．2半精加工阶段.............................................73．3．3精加工阶段...............................................73.4工艺路线方案的比较............................................73．4．1工艺路线方案一...........................................73．4．2工艺路线方案二...........................................83．4．3工艺方案的比较与分析.....................................8第四章加工余量、工序尺寸和公差的确定..............................104．1工序8：钻—粗铰—精铰φ14mm孔的加工余量、工序尺寸和公差的确定10第五章切削用量、时间定额的计算....................................115．1切削用量的计算..............................................115．1．1工序1：粗铣手柄座左右两端面............................115．1．2工序2：半精铣手柄座左端面A（φ45mm外圆凸台端面）.......115．1．3工序3：钻—粗铰—精铰φ25mm孔.........................125．1．4工序4：拉键槽..........................................135．1．5工序5:钻—粗铰—精铰φ10mm孔..........................145．1．6工序6：粗铣—半精铣槽14mm.............................145．1．7工序7：粗铣φ14mm孔端面................................165．1．8工序8:钻—粗铰—精铰φ14mm孔..........................165．1．9工序9：钻—攻螺纹孔M10................................175．1．10工序10：钻—配铰φ5mm圆锥孔...........................185．1．11工序11：钻—铰φ5.5mm孔...............................195．2时间定额的计算..............................................195．2．1基本时间tj的计算........................................195．2．2辅助时间tf的计算.......................................275．2．3其他时间的计算..........................................285．2．4单件时间tdj的计算......................................30（二）专用夹具的设计...............................................32第六章夹具体的设计................................................326．1定位方案设计................................................326．1．1工件的定位基准及定位基面......................
