本科论文目 录摘 要.........................................................................................................................IAbstract.....................................................................................................................II引 言........................................................................................................................11 零件分析................................................................................................................31.1 零件的用途.................................................................................................31.2 零件的图纸分析.........................................................................................41.3 零件的结构工艺分析.................................................................................51.4 零件的生产类型.........................................................................................52 毛坯的选择............................................................................................................62.1 确定毛坯种类.............................................................................................62.2 确定锻件余量及形状.................................................................................62.3 绘制毛坯图.................................................................................................73 机械加工基准，工艺路线的设计........................................................................83.1 定位基准的确定.........................................................................................83.1.1 选择粗基准......................................................................................83.1.2 选择精基准......................................................................................83.2 工艺路线的制定.........................................................................................93.2.1 选择表面加工方法........................................
