1零件的分析·······················
51.1零件的作用·····················
51.2零件的工艺分析···················
52零件的生产类型······················
52.1生产纲领······················
52.2生产类型······················
63毛坯的确定
······················
··63.1确定毛坯类型及其制造方法
··············
63.2估算毛坯加工的机械加工余量·············
64定位基准选择······················
64.1选择精基准·····················
64.2选择粗基准·····················
65制定机械加工工艺路线···················
65.1选择加工方法····················
65.2加工工艺路线····················
76加工余量及尺寸的确定··················· ...