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阀芯零件及加工工艺与M24×2外螺纹夹具设计.doc 摘要 在生产过程中，夹具在加工的时候是非常关键的。加工这个行业范围是比较广的，生产的零部件不管是构造也好，还是外部形状也好，变化是非常大的，现在基本上都不用通用夹具来进行生产了。这样来看，专用夹具在现代化的生产里面是非常重要的。 这篇写的题目是阀芯零件及加工工艺与夹具设计，依据任务书需要设计车M24×2外螺纹夹具。 一开始进行设计的时候，我翻阅了很多相关的材料，对于夹具怎么进行定位，怎么进行夹紧等等相关的知识都了解了一下，还有对于夹具现在的状况的有关知识进行了全面的了解。本次设计的主要内容有：对零件结构的分析，确定零件的制造形式，绘制零件图和毛坯图；然后对每一个步进行计算，确定切削用量，编写加工工艺过程卡和加工工序卡；确定加工工序的定位方案和夹紧方案，选择定位元件和夹紧元件等，对其定位误差进行分析；绘制夹具装配图及夹具体；撰写设计说明书，对本次设计进行总结。 设计好了之后，要进行有关的分析，之后将数据都算出来，这样一来整个就都写好了，不仅将我大学几年学习的知识都复习了一次，还为我将来的实践工作做了很好的铺垫。 关键词阀芯，加工工艺，车M24×2外螺纹，夹具设计 Abstract I
n the productio
n process, the fixture isvery criticalwhe
n machi
ni
ng. Processi
ng is awide ra
nge of i
ndustries, the productio
n of parts,whether structural or exter
nal shape is also good, the cha
nge isvery large,
now basically do
not
need a ge
neral fixture for productio
n. I
n thisway, special fixture isvery importa
nt i
n moder
n productio
n. The title of this paper isvalve core parts a
nd processi
ng tech
nology a
nd fixture desig
n, accordi
ng to the requireme
nts of the task book desig
n car M24*2 exter
nal thread fixture. At the begi
n
ni
ng of the paper desig
n, I looked through a lot of related materials, for the fixture how to locate, how to clamp a
nd other related k
nowledge have a look, aswell as the curre
nt situatio
n of the fixture for a comprehe
nsive u
ndersta
ndi
ng of the releva
nt k
nowledge. The mai
n co
nte
nts of this desig
n i
nclude: a
nalyzi
ng the structure of the parts, determi
ni
ng the ma
nufacturi
ng form of the parts, drawi
ng part drawi
ngs a
nd bla
nk drawi
ngs; the
n calculati
ng each step to determi
ne the cutti
ng parameters, compili
ng the processi
ng process card a
nd processi
ng process card; determi
ni
ng the positio
ni
ng a
nd clampi
ng program of the processi
ng procedures, selecti
ng the positio
ni
ng compo
ne
nts a
nd bla
nk drawi
ngs. The clampi
ng eleme
nts a
nd so o
n, carries o
n the a
nalysis to its localizatio
n error; Draws the clampi
ng fixture assembly drawi
ng a
nd the clampi
ng fixture body; Writes the desig
n i
nstructio
n, carries o
n the summary to this desig
n. After the desig
n is completed, the releva
nt a
nalysis should be carried out, a
nd the
n the datawill be calculated, so that the e
ntire thesiswill bewritte
n,
not o
nlywill my u
niversityyears of k
nowledge have bee
n reviewed, but also for my future practicework has do
ne a good foreshadowi
ng. Keywords： spool, processi
ng tech
nology, car M24* 2 exter
nal thread, fixture desig
n 目录 摘要I Abstract II 第一章阀芯的工艺分析- 1- 1.1阀芯的分析- 1- 1.2毛坯的选择- 1- 1.3基准的选择- 1- 第二章工艺规程设计- 3- 2.1加工余量的确定- 3- 2.2制定工艺路线- 3- 2.3工时的计算- 4- 第三章车M24×2螺纹夹具- 17- 3.1问题提出- 17- 3.2定位分析- 17- 3.3切削力和夹紧力的计算- 17- 3.4定位误差分析- 19- 3.5夹具结构设计及简要操作说明- 20- 总结- 21- 参考文献- 22-