泵壳体零件的机械加工工艺及其典型夹具设计 摘要 本课题的主要研究内容是某种壳体零件的机械加工工艺及夹具设计。壳体零件是一种很重要的零件，它起到了支承和包容传动的作用。泵壳零件的加工工艺规程及夹具设计是包括零件加工的工艺设计、工序设计以及专用夹具的设计三部分。通过对零件进行分析设计了两套工艺路线，通过分析比较选择了一个比较合理的方案；设计出毛坯的结构及零件的加工基准，计算各个工步的工序进行尺寸并决定出各个工序的工艺装备及切削用量；设计了钻夹具和镗夹具两套专用夹具，计算出夹具定位时产生的定位误差。本设计的加工工艺合理，夹具可行、高效、省力，能满足零件的加工要求，保证其加工质量。 关键词：切削用量；定位误差；专用夹具；工艺规程 The Machi
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ng 目录 1绪论1 1.1选题背景和意义1 1.2夹具设计发展概况2 1.3本文主要研究工作4 2零件的分析5 2.1零件的作用5 2.2零件的工艺分析5 2.3泵壳零件加工的主要问题和工艺过程设计所应采取的相应措施6 2.4泵壳体的材料、毛坯及热处理6 3工艺规程的设计9 3.1确定毛坯的制造形式9 3.2基面的选择9 3.3制定工艺路线9 3.4各工序加工设备、刀具、量具选用及机械加工余量的确定11 3.5确定切削用量及基本工时11 5钻孔专用夹具的设计28 5.1定位基准的选择28 5.2定位方案的选择28 5.3定位误差分析与计算28 5.4工件的夹紧方式的确定31 5.5导引方式及导引元件的确定31 5.6夹具体的设计32 6结论34 参考文献35 致谢36 设计（）知识产权声明37 设计（）独创性声明38