一、零件的工艺分析及生产类型的确定.....................................................................................-1-1.1零件的作用........................................................................................................................-1-1.2零件的工艺分析...............................................................................................................-1-1.3零件的生产类型................................................................................................................-2-二、毛坯的选择与设计.................................................................................................................-2-2.1选择毛坯............................................................................................................................-2-2.2确定机械加工余量...........................................................................................................-2-2.3设计毛坯图........................................................................................................................-3-三、加工方法和工艺路线的设计.................................................................................................-4-3.1定位基准的选择...............................................................................................................-4-（1）粗基准的选择.......................................................................................................-4-（2）精基准的选择.......................................................................................................-4-3.2零件表面加工方法的选择...............................................................................................-4-3.3制订工艺路线...................................................................................................................-5-四、工序设计.................................................................................................................................-7-4.1选择加工设备与工艺装备...............................................................................................-7-（1）选择机床...............................................................................................................-7-（2）选择量具................................................................................................................-8-4.2确定工序尺寸....................................................................................................................-9-（1）φ24端面加工余量................................................................................................-9-（2）钻13、扩14H9孔............................................................................................-9-（3）面加工余量...........................................................................................................-9-（3）钻孔......................................................................................................-10-五、确定切削用量及基本时间...................................................................................................-11-5.1工序3...............................................................................................................................-11-5.2工序4..........................................................................................................
