摘要 本文是对拔叉零件加工应用及加工的工艺性分析，主要包括对零件图的分析、毛坯的选择、零件的装夹、工艺路线的制订、刀具的选择、切削用量的确定、加工工艺文件的填写。选择正确的加工方法，设计合理的加工工艺过程。此外还对拔叉零件的两道工序的加工设计了专用夹具. 机床夹具的种类很多，其中，使用范围最广的通用夹具，规格尺寸多已标准化，并且有专业的工厂进行生产。而广泛用于批量生产，专为某工件加工工序服务的专用夹具，则需要各制造厂根据工件加工工艺自行设计制造。本夹具设计的主要内容是设计2套夹具。 关键词：加工工艺；加工方法；工艺文件；夹具 Abstract This paper is the a
nalysis of process of the fork parts processi
ng applicatio
n a
nd processi
ng, i
ncludi
ng the parts of the a
nalysis, the choice of bla
nk, the clampi
ng, the formulatio
n process route, tool selectio
n, cutti
ng dosage, process docume
nts. Choose the correct methods for processi
ng, ma
nufacturi
ng process desig
n. I
n additio
n also two processes of fork parts desig
n special fixture. Ma
ny types of machi
ne tool fixture, wherei
n, the use scope broadest ge
neral jig, sizes have bee
n sta
ndardized, a
nd has a professio
nal productio
n pla
nt. But widely uses i
n the volume productio
n, special fixture desig
ned for a workpiece processi
ng services, requires the factory accordi
ng to the workpiece processi
ng tech
nology to desig
n a
nd ma
nufacture. The mai
n co
nte
nt of this thesis is to desig
n 2 sets of fixture desig
n fixture. Key words: processi
ng; processi
ng method; process docume
nts; fixture 目录 摘要II Abstract III 序言1 1前言1 2机械加工工艺及夹具设计的发展1 2.1发展历史1 2.2发展现状1 2.3发展趋势2 2.3.1夹具的发展趋势2 2.3.2机械加工制造技术的发展趋势3 3零件的分析4 3.1零件的作用4 3.2零件的工艺分析4 4工艺规程设计6 4.1加工工艺过程6 4.2确定各表面加工方案6 4.3确定定位基准7 4.3.1粗基准的选择7 4.3.2精基准选择的原则7 4.4制定工艺路线7 4.5机械加工余量、工序尺寸及毛皮尺寸的确定10 4.6确立切削用量及基本工时12 5夹具设计18 5.1定位基准的选择18 5.2切削力及夹紧力的计算18 5.3定位误差分析19 5.4夹具设计及简要操作说明19 总结20 谢辞21 参考文献22