摘要 总泵缸体工艺规程及其车Φ30端面；钻、攻M121.25-5H螺纹；钻、攻M221.5-5H螺纹；钻透孔Φ0.7、沉孔Φ3.5和Φ3.5通孔的工装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。在工艺设计中要首先对零件进行分析，了解零件的工艺再设计出毛坯的结构，并选择好零件的加工基准，设计出零件的工艺路线；接着对零件各个工步的工序进行尺寸计算，关键是决定出各个工序的工艺装备及切削用量；然后进行专用夹具的设计，选择设计出夹具的各个组成部件，如定位元件、夹紧元件、引导元件、夹具体与机床的连接部件以及其它部件；计算出夹具定位时产生的定位误差，分析夹具结构的合理性与不足之处。 关键词：总泵缸体；加工工艺；夹具 The Total Pump Cyli
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nic;Fixture 目录 1绪论1 1.1概述1 1.2机械加工工艺规程的作用1 1.3课题背景及国内外发展趋势2 1.4研究方法及技术路线3 1.4.1深入生产实践调查研究3 1.4.2制定工艺规程的程序3 2零件的分析5 2.1零件图5 2.2零件工作原理5 2.3零件工艺分析5 2.4总泵缸体的技术要求5 3工艺规程设计7 3.1确定毛坯制造形式7 3.2基准面选择7 3.3工艺路线7 3.4机械加工余量工序尺寸及毛坯尺寸的确定7 3.5确定切削用量及基本工时7 4车Φ30端面的夹具设计19 4.1问题的提出19 4.2定位基准的选择19 4.3切削力及加紧力计算19 4.4定位误差的分析20 4.5平衡块的计算20 4.6夹具截图21 5钻M12X12.5-5H夹具设计22 5.1定位基准选择22 5.2定位误差分析22 5.3夹具设计方案22 6结论23 参考文献24 致谢25 设计()知识产权声明26 设计()独创性声明27