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。 轴零件的工艺规程及铣键槽的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 ABSTRCT 3 1 .1夹具的现状及生产对其提出新的要求1 1.2现代夹具的发展方向1 2、零件的分析3 2.1零件的作用3 2.2零件的工艺分析3 2.3确定零件的生产类型4 3、确定毛坯类型绘制毛坯简图4 3.1选择毛坯4 3.2确定毛坯的尺寸公差和机械加工余量4 4、工艺规程设计5 4.1定位基准的选择5 4.2拟定工艺路线5 4.3加工设备及工艺装备的选用7 4.4加工余量，工序尺寸及公差的确定7 4.5切削用量的计算7 4.6时间定额的计算9 5、夹具设计10 5.1夹具设计任务10 5.2拟定夹具定位方案10 5.3绘制夹具装配图10 5.4夹具装配图上标注尺寸，配合尺寸及技术要求11 5.5定位误差分析11 5.6切削力和夹紧力计算12 5.7夹具设计及操作的简要说明13 总结14 致谢15 参考文献16