湖南铁道职业技术学院一：序言...............................................................................................................................2二、凸模板设计的内容及步骤............................................................................................32.1生产纲领..................................................................................................................32.2生产类型..................................................................................................................32.3零件的技术要求分析...............................................................................................42.4零件的结构工艺分析...............................................................................................42.5工艺分析..................................................................................................................52.6毛坯分析..................................................................................................................62.7工艺过程的设计......................................................................................................62.71选择定位基准..................................................................................................72.72装夹方案的选择..............................................................................................82.73刀具的选择方案..............................................................................................92.74量具的选择方案............................................................................................112.8工艺过程的选定....................................................................................................122.9加工工序的设计.....................................................................................................182.91确定切削用量...............................................................................................182.92加工工序用量的计算.....................................................................................22三：小结......................................................