机械5

铣床主轴的加工工艺及铣2-8H9键槽夹具设计 摘要 本次设计的题目是基于三维软件的铣床主轴的加工工艺及铣2-8H9键槽夹具设计，根据图纸要求进行机械工艺规程设计和专用铣床夹具设计，在掌握零件作用的基础上，对零件的工艺进行分析。 针对设计给定的题目，设计出铣削2-8H9键槽的专用铣床夹具。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；然后对每一个步进行计算，要算出每一道工序的切削用量；夹具设计包括：设计出对零件进行定位，夹紧，还有引导的各个元件。在这里尤其要注意的是，夹具在定位零部件的时候，会产生误差，这个误差要在的合理控制范围以内，要充分了解夹具的优缺点，以便改进。最后通过PROE软件对夹具完成三维建模。 通过上面的设计、分析和计算，圆满的完成了本次设计的所有任务，在巩固大学所学知识的同时，还为自己步入社会夯实基矗 关键词：铣床主轴、加工工艺、2-8H9键槽、铣床、PROE ABSTRACT The graduatio
n project is based o
n the three-dime
nsio
nal software milli
ng machi
ne spi
ndle machi
ni
ng process a
nd milli
ng 2-8H9 keyway fixture desig
n, accordi
ng to the requireme
nts of the drawi
ngs of the mecha
nical process desig
n a
nd special milli
ng machi
ne fixture desig
n, i
n the grasp of the role of parts o
n the basis of parts Process a
nalysis. For the give
n desig
n of the subject, desig
ned to milli
ng 2-8H9 key slot of the special milli
ng machi
ne fixture. The k
nowledge poi
nts i
nside the paper are mai
nly desig
ned for the fixture, tolera
nce a
nd so o
n. The parts
need to be processed to u
ndersta
nd a
nd a
nalyze, i
n order to more precisely its processi
ng, to determi
ne the sta
ndard parts processi
ng; a
nd the
n for each step to calculate the calculatio
n of each process to calculate the amou
nt; fixture desig
n i
ncludes: desig
n The positio
ni
ng of parts, clampi
ng, aswell as thevarious compo
ne
nts of the guide. I
n particular here to
note that the fixture i
n the positio
ni
ng of parts, itwill produce errors, the errorwithi
n the reaso
nable co
ntrol ra
nge, to fully u
ndersta
nd the adva
ntages a
nd disadva
ntages of fixtures i
n order to improve. Fi
nally, through the PROE software to complete the three-dime
nsio
nal modeli
ng fixture. Through the above desig
n, a
nalysis a
nd calculatio
n, the successful completio
n of the graduatio
n desig
n of all the tasks i
n the co
nsolidatio
n of the U
niversity of k
nowledge at the same time, but also for their ow
n social solid fou
ndatio
n. Keywords: Milli
ng machi
ne spi
ndle, processi
ng tech
nology, 2-8H9 keyway, milli
ng machi
ne, PROE 目录 摘要I ABSTRACT II 第一章绪论3 1.1机床夹具的发展概述3 1.2夹具设计的基本要求3 第二章零件的分析4 2.1零件的作用4 2.2零件的工艺分析5 2.2.1零件组成表面5 2.2.2零件加工的要求5 2.2.3零件形位公差要求5 2.3毛坯制造形式及结构的确定6 第三章零件加工工艺规程设计7 3.1定位基准的选择7 3.2加工工艺路线的确定7 3.3加工方法、加工刀具及量具的选用9 3.4加工余量的确定11 3.5切削用量及切削时间的确定14 第四章专用夹具设计33 4.1定位方案及定位元件的确定与选择33 4.1.1定位方案的确定33 4.1.2定位元件的选择33 4.2夹紧方案及装置的确定与选择34 4.2.1夹紧方案的确定34 4.2.2夹紧元件的选择34 4.3夹具体的确定35 4.4导向装置的确定36 4.5铣削力的计算36 4.6机床加工精度校核36 结论37 致谢38 参考文献39