机械5

目录 摘要…………………………………………………………………1 序言…………………………………………………………………3 一.零件分析……………………………………………………4 1.1零件作用………………………………………………4 1.2零件的工艺分析…………………………………………4 二.工艺规程设计…………………………………………………4 2.1确定毛坯的制造形式……………………………………4 2.2基面的选择传……………………………………………4 2.3制定工艺路线……………………………………………5 2.4机械加工余量、工序尺寸及毛坯尺寸的确定…………6 2.5确立切削用量及基本工时………………………………7 三夹具设计………………………………………………………14 3.1问题的提出………………………………………………14 3.2定位基准的选择…………………………………………14 3.3切削力及夹紧力计算……………………………………14 3.4定位误差分析……………………………………………16 3.5定向键和对刀装置………………………………………17 3.6夹具设计简要操作说明…………………………………20 总结………………………………………………………………21 致谢………………………………………………………………22 参考文献…………………………………………………………23 摘要 本次设计内容涉及了机械制造工艺及机床夹具设计、金属切削机床、公差配合与测量等多方面的知识。 轴承套加工工艺规程及其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，并在以后设计中注意改进。 关键词：工艺、工序、切削用量、夹紧、定位、误差。 ABSTRCT This desig
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n, the error 序言 机械制造业是制造具有一定形状位置和尺寸的零件和产品，并把它们装备成机械装备的行业。机械制造业的产品既可以直接供人们使用，也可以为其它行业的生产提供装备，社会上有着各种各样的机械或机械制造业的产品。我们的生活离不开制造业，因此制造业是国民经济发展的重要行业，是一个国家或地区发展的重要基础及有力支柱。从某中意义上讲，机械制造水平的高低是衡量一个国家国民经济综合实力和科学技术水平的重要指标。