目录一、零件图...........................................................................................................................................4二、确定毛坯以及加工设备.........................................................................................................5（一）毛坯简图.........................................................................................................................5（二）设备选择.........................................................................................................................5三、零件加工工艺过程分析.........................................................................................................6（一）分析零件图样...............................................................................................................61.零件图样..........................................................................................................................62.精度分析..........................................................................................................................63.形位公差分析.................................................................................................................64.粗糙度要求......................................................................................................................6（二）确定装夹方案、定位基准、编程原点、加工起点、换刀点...................61.装夹方案..........................................................................................................................62.定位基准..........................................................................................................................63.编程原点..........................................................................................................................64.加工起点..........................................................................................................................75.换刀点...............................................................................................................................7