摘要 本文对三通座进行了分析，详细介绍了三通座加工工艺过程的制定:1、三通座定位基准的选择，2、三通座制定加工工艺路线， 3、三通座选择加工设备及三通座工艺装备， 4、确定三通座切削用量及三通座加工基本工时。然后介绍三通座加工夹具的设计及三通座计算，包括三通座本工序的加工方式分析，本文内容再对确定夹具加工类型，租后确定加工方案和选择三通座定位元件确定夹紧方案，确定加工对刀装置最终三通座设计专用夹具。 关键词：三通座、加工工艺、专用夹具 Abstract This paper a
nalyzes the fu
nctio
n a
nd tech
nology of the tee, a
nd i
ntroduces i
n detail the formulatio
n of the processi
ng process of the tee: 1. The selectio
n of the positio
ni
ng datum of the tee; 2. The formulatio
n of the processi
ng route of the tee; 3. The selectio
n of the processi
ng equipme
nt a
nd the tech
nological equipme
nt of the tee; 4. Determi
ni
ng the cutti
ng parameters a
nd the basicworki
ng hours of the tee. The
n it i
ntroduces the desig
n a
nd calculatio
n of the processi
ng fixture for tee seat, i
ncludi
ng the a
nalysis of the processi
ng mode of the tee. The co
nte
nt of this paper is to determi
ne the processi
ng type of the fixture, determi
ne the processi
ng scheme after leasi
ng a
nd select the positio
ni
ng eleme
nt of the tee seat to determi
ne the clampi
ng scheme, determi
ne the processi
ng tool setti
ng device, a
nd fi
nally desig
n the special fixture for the tee seat. Keywords: tee seat, processi
ng tech
nology, special fixture 目录 1、机械加工工艺规程设计 1.1三通座的分析1 1.1.1三通座的作用2 1.1.2三通座的性能分析2 1.1.3三通座的材料性能2 1.1.4三通座的生产类型3 1.2三通座零件的工艺性分析3 1.3三通座加工方法的选择4 1.3.1平面加工4 1.3.2孔的加工4 1.4三通座工艺路线5 1.5确定加工余量及毛坯尺寸9 2、确定切削用量和加工时间12 2.1工序3粗精铣A面12 （A）确定切削用量12 （B）确定时间定额12 2.2工序4粗、精铣上端面及侧面13 （A）确定切削用量13 （B）确定时间定额13 2.3工序5钻孔14 （A）确定切削用量14 （B）确定时间定额14 2.4工序6铰孔15 a.确定背吃刀量15 b.确定进给量15 c.确定切削速度15 3、三通座专用夹具的设计17 3.1三通座夹具结构设计17 3.1.1确定定位方案，选择定位元件17 3.1.2夹具设计的有关计算18 3.2计算定位误差——目的是分析定位方案的可行性18 3.3夹具结构设计及操作简要说明18 3.4夹具结构设计及操作简要说明19 4、总结20 5、参考文献21