本科论文目 录摘 要.....................................................................................................................IAbstract.................................................................................................................II引 言....................................................................................................................11 导向块零件阐述................................................................................................31.1 导向块零件的用途.......................................................................................31.2 导向块零件的二维图纸分析.......................................................................41.3 确定生产类型...............................................................................................41.4 本章小结.......................................................................................................52 明确毛坯种类、绘画毛坯图............................................................................62.1 确定毛坯材料...............................................................................................62.2 确定毛坯尺寸以及加工量...........................................................................62.3 绘制毛坯图...................................................................................................72.4 本章小结.......................................................................................................83 机械加工基准，选择工艺路线.......................................................................93.1 定位基准的确定...........................................................................................93.1.1 粗基准的选择......................................................................................93.1.2 精基准的选择......................................................................................93.2 确定工艺路线.....................................................................
