机械5

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。 壳体零件加工工艺及钻孔夹具设计是包括零件加工的工艺设计、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：工艺、工序、切削用量、夹紧、定位、误差。 ABSTRCT This desig
n co
nte
nt has i
nvolved the machi
ne ma
nufacture craft a
nd the e
ngi
ne bed jig desig
n, the metal-cutti
ng machi
ne tool, the commo
n differe
nce coordi
natio
n a
nd the survey a
nd so o
n the various k
nowledge. The reductio
n gear box body compo
ne
nts tech
nological process a
nd its the processi
ng hole jig desig
n is i
ncludes the compo
ne
nts processi
ng the tech
nological desig
n, the worki
ng procedure desig
n as well as the u
nit clamp desig
n three parts. Must first carry o
n the a
nalysis i
n the tech
nological desig
n to the compo
ne
nts, u
nderstood the compo
ne
nts the craft redesig
ns the semi fi
nished materials the structure, a
nd chooses the good compo
ne
nts the processi
ng datum, desig
ns the compo
ne
nts the craft route; After that is carryi
ng o
n the size computatio
n to a compo
ne
nts each labor step of worki
ng procedure, the key is decides each worki
ng procedure the craft equipme
nt a
nd the cutti
ng specificatio
ns; The
n carries o
n the u
nit clamp the desig
n, the choice desig
ns the jig each compositio
n part, like locates the part, clamps the part, guides the part, to clamp co
ncrete a
nd the e
ngi
ne bed co
n
nectio
n part as well as other parts; Positio
n error which calculates the jig locates whe
n produces, a
nalyzes the jig structure the ratio
nality a
nd the deficie
ncy, a
nd will desig
n i
n later pays atte
ntio
n to the improveme
nt. Keywords: The craft, the worki
ng procedure, the cutti
ng specificatio
ns, clamp, the localizatio
n, the error 目录 序言1 第一章零件的分析2 1.1零件的作用2 1.2零件的工艺分析2 第二章工艺规程设计3 2.1确定毛坯的制造形式3 2.2毛坯的设计3 2.3基面的选择4 2.4制定工艺路线5 第三章零件加工工序设计9 3.1工序1设计9 3.2工序2设计9 3.3工序3设计9 3.4工序4设计9 3.5工序5设计10 3.6工序6设计12 3.7工序7设计13 3.8工序8设计15 3.9工序9设计17 3.10工序10设计19 3.11工序11设计20 3.12工序12设计22 3.13工序13设计24 3.14工序14设计26 3.15工序15设计28 3.16工序16设计28 3.17工序17设计30 3.18工序18设计32 第四章夹具设计35 4.1问题的提出35 4.2定位基准的选择35 4.3切削力及夹紧力计算35 4.4钻套的设计36 4.5夹具设计及操作简要说明36 总结37 致谢38 参考文献39