摘要 本次变速器换挡叉设计内容涉及机械设计，夹具设计，机械制图，工艺设计，AutoCAD、机，钻床夹具设计，械制造基础、钻床加工实例、公差调配，与测量技术、等多方面的知识。 变速器换挡叉加工工艺及夹具设计包括对零件的工艺分析，制定工艺过程卡和工序卡，专用夹具设计等三大部分。本设计主要研究变速器换挡叉的零件结构，主要是以加工工艺和夹具设计来说明。首先对零件图纸进行分析理解，明确零件的各个尺寸，精度生产类型等要素，然后再进行零件毛坯的选用，接着对零件进行工艺过程分析，然后计算出切削用量夹紧力等要素，最后再根据加工工艺工序设计出相应的夹具。 关键词：变速器换挡叉工艺规程；定位；压紧；导向，夹具，误差 Abstract The turbi
ne pump body graduatio
n desig
n co
nte
nt i
nvolves the mecha
nical desig
n, fixture desig
n, mecha
nical drawi
ng, process desig
n, AutoCAD, machi
ne, bori
ng machi
ne fixture desig
n, machi
nery ma
nufacturi
ng base, bori
ng process i
nsta
nce, tolera
nce matchi
ng a
nd i
ntercha
ngeability a
nd measuri
ng tech
nology, a
nd other aspects of k
nowledge. The e
nd cover graduatio
n desig
n co
nte
nt i
nvolves the mecha
nical desig
n, fixture desig
n, mecha
nical drawi
ng, process desig
n, AutoCAD, machi
ne, drilli
ng machi
ne fixture desig
n, machi
nery ma
nufacturi
ng base, drilli
ng process i
nsta
nce, tolera
nce matchi
ng, i
ntercha
ngeability a
nd measuri
ng tech
nology, a
nd other aspects of k
nowledge. E
nd cover processi
ng tech
nology a
nd the borehole drilli
ng jig desig
n, the desig
n i
ncludes the parts of process a
nalysis, formulatio
n process a
nd process, three most special fixture desig
n, etc. This desig
n mai
nly study the e
nd cover parts structure, mai
nly to the processi
ng schemes a
nd fixture desig
n. First a
nalyze the drawi
ngs a
nd determi
ne the parts of each size, type of productio
n eleme
nts such as accuracy, a
nd the
n to make the selectio
n of bla
nk parts, the
n carries o
n the process a
nalysis of parts, a
nd the
n calculate the cutti
ng dosage clampi
ng force a
nd other factors, a
nd the
n accordi
ng to the processi
ng craft process to desig
n the correspo
ndi
ng fixture. Key words: e
nd cover procedure; Positio
ni
ng; Pressure; Guide, fixture, 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.毛坯的确定4 2.1确定毛坯的制造形式4 2.2毛坯形状及尺寸5 三拟定加工工艺路线6 3.1基准的选择6 3.1.1粗基准选择6 3.1.2精基准的选择7 3.2制定工艺路线7 四零件加工工序设计10 4.1铣右端面10 4.2铣厚5.9的2侧面11 4.3铣宽51m的槽11 4.4钻，扩，绞15.8的孔12 4.5铣宽9.65mm的2面及顶面14 4.6铣宽16.5mm的面15 4.7铣宽14.2mm的槽16 4.8钻M10的孔17 五夹具设计18 5.1问题的提出18 5.2定位基准的选择18 5.3切削力及夹紧力计算19 5.4定位误差分析21 5.5夹具设计及操作简要说明22 总结24 致谢27 参考文献29