目录一、零件图................................................................................................................................................3（一）分析零件图.........................................................................................................................3（二）精度分析.............................................................................................................................3（三）表面粗糙度分析...................................................................................................................3二、毛坯选择............................................................................................................................................5（一）毛坯图样...............................................................................................................................5（一）毛坯选择...............................................................................................................................5三、零件加工工艺过程分析...................................................................................................................6（一）确定装夹方案，编程原点、定位基准、加工起点和换刀点。.......................................6（二）制定加工方案.......................................................................................................................5（三）刀具选择..............................................................................................................................6（四）刀具选择介绍......................................................................................................................6（五）走刀路线...............................................................................................................................7四、加工程序.........................................................................................................................................13（一）坐标系的确定.....................................................................................................................13（二）UG自动加工程序...