目录工艺部分······················································································21.1有关零件的结构分析和功用·························································21.1.1零件的功用···········································································21.1.2零件的结构分析······································································21.2课题（提供的技术资料）····························································21.2.1生产纲领···············································································21.2.2技术资料···············································································31.3毛坯的种类··············································································31.3.1确定毛坯的种类······································································31.4定位基准的选择原则··································································31.4.1粗基准的选择原则···································································31.4.2精基准的选择原则···································································41.5工艺规程的拟定········································································41.5.1制定工艺规程的原则································································41.5.2拟定工艺路线·········································································41.6机械加工余量工序尺寸及毛坯尺寸的确定······································41.6.1确定加工余量和工序尺寸··························································41.6.2确定毛坯尺寸·········································································51.7确定切削余量···········································································61.7.1确定和计算切削用量································································61.8工时定额的确定········································································141.8.1计...
