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。 液压管件连接盖的加工工艺规程和钻Φ3孔和扩、铰Φ10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：切削用量;夹紧;定位;误差。 Abstract The desig
n i
nvolves the mecha
nical ma
nufacturi
ng process a
nd machi
ne tool fixture desig
n,metal cutti
ng machi
ne tools,tolera
nce a
nd measureme
nt,a
nd other aspects of k
nowledge. The processi
ng regulatio
ns for the co
n
nectio
n parts of hydraulic pipe fitti
ngs a
nd the three parts of process desig
n,process desig
n a
nd special fixture desig
n for drilli
ng 3 holes a
nd expa
nsio
n a
nd hi
nge 10 are i
ntroduced.I
n the process desig
n,the parts are a
nalyzed first,the process of the parts is redesig
ned a
nd the structure of the bla
nk is redesig
ned.The process datum of the parts is selected a
nd the process route of the part is desig
ned.The
n the size calculatio
n of theworki
ng procedure of the parts is calculated,the keyis to determi
ne the process equipme
nt a
nd the cutti
ng amou
nt of thevariousworki
ng order; the
n,the keyis to determi
ne the amou
nt of the process equipme
nt a
nd the cutti
ng amou
nt.The desig
n of the special fixture is carried out,a
nd the compo
ne
nts of the fixture are desig
ned,such as the positio
ni
ng eleme
nt,the clampi
ng eleme
nt,the guidi
ng eleme
nt,the co
n
necti
ng partswith the machi
ne tool a
nd the other parts.The positio
ni
ng error is calculatedwhe
n the fixture is positio
ned,a
nd the ratio
nalitya
nd i
nadequacies of the fixture structure are a
nalyzed,a
nd the desig
n is i
njected i
n the future.It is i
nte
nded to be improved. Keywords: Cutti
ng dosage;clamp;Locatio
n; error. 目录 摘要I 第一章绪论1 1.1前言1 1.2夹具设计中的特点1 1.3夹具设计需保证的条件1 1.4夹具的发展趋势2 1.5研究方法及技术路线2 1.6课题背景及发展趋势3 第二章零件的分析5 2.1零件的作用5 2.2零件的工艺分析5 第三章工艺规程设计6 3.1确定毛坯的制造形式6 3.2基面的选择6 3.3制定工艺路线7 3.4确定各工序的加工余量8 3.5确定切削用量及基本工时10 第四章钻床夹具设计30 4.1问题的提出30 4.2定位基准的选择30 4.3定位元件的选择30 4.4切削力及夹紧力计算31 4.5定位误差分析31 4.6夹具设计及操作简要说明32 结论33 小结与致谢34 参考文献35