机械5

圆弧零件及M30×2外螺纹加工工艺与夹具设计 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。 圆弧零件的加工工艺规程和车M30×2外螺纹的工艺设计、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：圆弧；加工工艺；工序；夹具；工艺装备；切削用量 Abstract This desig
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nd other aspects of k
nowledge. Processi
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nd process desig
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nd special fixture desig
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nalyze the parts, u
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nd the process of the parts, the
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n desig
n the process route of the parts. The desig
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nd each compo
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nt of fixture is selected, such as positio
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notes i
n future desig
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nte
nded to be improved. Keywords circular arc; processi
ng tech
nology; process; fixture; process equipme
nt; cutti
ng parameter 目录 摘要I Abstract II 第1章序言- 1- 1.1引言- 1- 1.2机械加工工艺规程的作用- 1- 1.3研究方法及技术路线- 2- 第2章零件的分析- 3- 2.1图形绘制- 3- 2.2零件的工艺分析- 3- 第3章工艺规程设计- 4- 3.1确定毛坯的制造形式- 4- 3.2基面的选择- 4- 3.2.1粗基准的选择原则- 4- 3.2.2精基准选择的原则- 4- 3.3制订工艺路线- 5- 3.4加工余量的确定- 5- 3.5切削用量及基本工时的确立- 6- 第4章夹具设计- 23- 4.1定位基准的选择- 23- 4.2切削力及夹紧力计算- 23- 4.3定位误差分析- 23- 4.4夹具结构设计及简要操作说明- 24- 总结- 25- 致谢- 27- 参考文献- 28-