机械5

摘要 本次设计的工件是泵体，泵体是泵的重要零件之一，为泵正常工作提供密封的空间，给泵上的零部件提供支承。因此，对泵体零件的研究是非常重要的。本次主要对泵体加工工艺以及铣宽25两端面专用夹具进行设计。 加工工艺设计内容有：零件作用、组成表面、加工要求以及形位公差要求进行分析，选择了生产类型，绘制毛坯图，设计加工工艺路线，计算切削用量以及加工工时，填写工艺过程卡以及工序卡等。 专用夹具设计的内容有：对零件的加工表面及结构进行分析，依据定位原理设计定位方案选择定位元件；依据夹紧装置的设计要求，设计夹紧方案选择夹紧元件；设计机床连接体—夹具体；选择对刀装置—对刀块；计算切削力还有夹紧力等。最后，依据上面的设计，绘制了铣夹具装配图及非标零件图等。 关键词：泵体；加工工艺；铣宽25两端面；专用夹具；设计 Abstract Theworkpiece desig
ned i
n this project is the pump body. The pump body is o
ne of the importa
nt parts of the pump,which provides a sealed space for the
normal operatio
n of the pump a
nd provides support for the compo
ne
nts o
n the pump. Therefore, research o
n pump parts isvery importa
nt. This time,we mai
nly desig
ned the pump body processi
ng tech
nology a
nd the special fixtures for both e
nds of the milli
ngwidth. The processi
ng desig
n co
nte
nt i
ncludes: part fu
nctio
n, compositio
n surface, processi
ng requireme
nts a
nd shape tolera
nce requireme
nts for a
nalysis, selecti
ng the productio
n type, drawi
ng the bla
nk drawi
ng, desig
ni
ng the processi
ng route, calculati
ng the cutti
ng amou
nt a
nd processi
ng time, filli
ng i
n the process card a
nd the process card. Wait. The co
nte
nts of the special fixture desig
n i
nclude: a
nalyzi
ng the machi
ni
ng surface a
nd structure of the part, desig
ni
ng the positio
ni
ng scheme accordi
ng to the positio
ni
ng pri
nciple, selecti
ng the positio
ni
ng compo
ne
nt; desig
ni
ng the clampi
ng scheme to select the clampi
ng compo
ne
nt accordi
ng to the desig
n requireme
nts of the clampi
ng device; desig
ni
ng the machi
ne tool co
n
nector-clip Specifically; choose the tool setti
ng device- the tool block; calculate the cutti
ng force a
nd clampi
ng force. Fi
nally, accordi
ng to the above desig
n, the milli
ng fixture assembly drawi
ng a
nd
no
n-sta
ndard parts drawi
ng are draw
n. Keywords: pump body; processi
ng tech
nology; milli
ngwidth 25 e
nd faces; special fixture; desig
n 目录 摘要I Abstract II 第1章绪论1 1.1专用夹具定位方案及定位元件的概述1 1.2专用夹具夹紧装置设计原则的概述1 第2章分析零件、确定生产类型和制造方式2 2.1分析零件的作用2 2.2分析零件的材料2 2.3分析零件的表面构造2 2.4分析零件加工表面的表面粗糙度要求3 2.5分析零件的形位公差要求3 2.6确定零件的生产类型3 2.7确定零件的制造形式4 第3章设计零件的加工工艺规程6 3.1选择零件的加工基准6 3.2设计零件的加工工艺路线6 3.3选择加工零件的机床、夹具、刀具及量具8 3.4确定零件的机加工余量8 3.5确定切削用量、计算加工工时10 第4章设计铣宽25两端面专用夹具24 4.1设计定位方案，选择定位原件24 4.1.2定位方案的设计原则24 4.1.3定位元件的基本要求24 4.2设计夹紧方案，选择夹紧元件25 4.3设计夹具体25 4.4选择对刀块26 4.5计算铣削力及夹紧力26 4.6分析定位误差27 结论28 致谢29 参考文献30