机械5

箱体加工工艺及夹具设计 摘要 题目是箱体加工工艺及夹具设计，根据图纸要求进行机械工艺规程设计和专用夹具设计，在掌握零部件都是用来做什么的这个最基本以后，再对这些零部件的相关工艺进行具体的了解。 的课题已经定下来了，将这个铣削箱体上表面的的专用铣床夹具设计出来。里面的知识点主要有对机床夹具进行设计、公差等。先对需要加工的零部件进行了解，分析，以便更加精确的对其进行加工，确定加工零件的标准；然后针对不同的步骤将需要的相关数据算出来，在设计夹具的时候主要有下面几个方面：零件在这个夹具上定位的时候是什么样，夹紧的时候是什么样，还有这些引导部分的零部件是什么样。最最重要的就是，在对零部件进行定位的时候，肯定是会有偏差出现的，这个偏差不能太离奇，要在一定的范围里面，这样在完全知晓了夹具的好处还有不好的地方以后，后期才能进行改善 设计，还有相关的分析和相关数据都算出来之后，我们这篇才算是好了，不仅将在学校这么长时间学的专业知识复习了一遍，还为自己将来的工作提供了一定的经验。 关键词：箱体；加工工艺；铣床夹具 Abstract The title is box processi
ng tech
nology a
nd fixture desig
n. Mecha
nical process specificatio
n desig
n a
nd special fixture desig
n are carried out accordi
ng to the requireme
nts of drawi
ngs. After masteri
ng the most basicwhat parts are used for,wewill have a detailed u
ndersta
ndi
ng of the releva
nt processes of these parts. The subject of this paper has bee
n settled a
nd the special milli
ng fixture for milli
ng the upper surface of the box has bee
n desig
ned.The k
nowledge poi
nts i
n the paper mai
nly i
nclude desig
n a
nd tolera
nce of machi
ne tool fixture.First, the parts to be processed are u
nderstood a
nd a
nalyzed i
n order to process them more precisely a
nd determi
ne the sta
ndard of the parts to be processed. The
n, the releva
nt data required for differe
nt steps are calculated. Whe
n desig
ni
ng the fixture, there are the followi
ng aspects:what is the positio
n of the parts o
n the fixture,what is the clampi
ng time, a
nd these guide departme
nts.What do the parts look like?Most importa
ntly,whe
n positio
ni
ng parts, there must be deviatio
n. This deviatio
n should
not be too surprisi
ng. It should bewithi
n a certai
n ra
nge so that it ca
n be improved later o
nlywhe
n the adva
ntages a
nd disadva
ntages of fixture are fully k
now
n. After the desig
n, releva
nt a
nalysis a
nd releva
nt data have bee
n calculated, this paper is really a good o
ne. Itwill
not o
nly review the professio
nal k
nowledge lear
ned i
n the school for such a lo
ng time, but also provide some experie
nce for its futurework. Keywords: box; processi
ng tech
nology; milli
ng fixture 目录 摘要I Abstract II 第1章绪论1 1.1箱体的概述1 1.2箱体零件工艺过程分析1 1.3机床夹具的发展概述1 1.4机床夹具的组成及分类2 1.5夹具设计的基本要求3 第2章零件的分析4 2.1零件的作用4 2.2零件的工艺分析6 2.3毛坯制造形式及结构的确定7 第3章零件加工工艺规程设计8 3.1定位基准的选择8 3.2加工工艺路线的选择、分析与确定9 3.3加工方法、加工刀具及量具的选用12 3.4加工余量的确定12 3.5切削用量及切削时间的确定15 第4章箱体上表面铣床夹具设计26 4.1定位方案及定位元件的确定与选择26 4.2夹紧方案及装置的确定与选择30 4.3夹具体的设计与确定31 4.4导向装置的确定33 4.5铣削力的计算34 4.6定位误差的计算34 4.7定位误差分析34 结论35 参考文献36 致谢38