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。 刹车支架加工工艺规程及铣左端面的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
n co
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nt has i
nvolved the machi
ne ma
nufacture craft a
nd the e
ngi
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nological desig
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n as well as the u
nit clamp desig
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n the a
nalysis i
n the tech
nological desig
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nderstood the compo
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ns the semi fi
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nd chooses the good compo
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nd the cutti
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ns; The
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nit clamp the desig
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ns the jig each compositio
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nd the e
ngi
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nectio
n part as well as other parts; Positio
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n produces, a
nalyzes the jig structure the ratio
nality a
nd the deficie
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nd will desig
n i
n later pays atte
ntio
n to the improveme
nt. Keywords: The craft, the worki
ng procedure, the cutti
ng specificatio
ns, clamp, the localizatio
n, the error 目录 序言1 一零件的分析2 1.1零件的作用2 1.2零件的工艺分析2 二.工艺规程设计3 2.1确定毛坯的制造形式3 2.2基面的选择3 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7 2.5确定切削用量及基本工时8 三机床夹具的定位及夹紧14 3.1概述14 3.1.1机床夹具的概念14 3.1.2机床夹具的组成14 3.1.3机床夹具的分类15 3.1.4机床夹具在机械加工中的作用17 3.2工件的装夹方式18 3.3基准及其分类19 3.4工件的定位20 四夹具设计22 4.1问题的提出22 4.2定位基准的选择22 4.3切削力和夹紧力的计算22 4.4定位误差分析24 4.5夹具设计及操作的简要说明25 总结26 致谢28 参考文献29