机械5

摘要 机器的加工现在发展的这么快，设计夹具也好，加工夹具也好，反正这个行业的发展是很好的。夹具其实就是用来对零部件进行紧紧的夹祝在设计专用夹具时要考虑很多因素如工件的定位方案，工件怎么样去夹紧等问题。 这次的题目是一款行星架的加工工艺设计及其夹具设计，该零件属于盘类零件，在加工时其精度有相应的一些要求。所以一定要有专用的夹具来保证其正常加工。在充分了解行星架作用的基础上，对其零件的作用进行分析，绘制零件图和毛坯图，编写加工工艺路线。确定各工序的加工参数，填写工艺过程卡及工序卡。 本次夹具设计是对加工M14X1.5-6H螺纹孔设计的专用钻床夹具，其设计内容有定位和夹紧方案的确定，定位和夹紧元件的选择。夹具体的设计、导向装置的选用、钻削力的计算等。最后，绘制夹具装配图及夹具体零件图。 关键词：行星架、加工工艺、M14X1.5-6H、钻床夹具 ABSTRACT The processi
ng of the machi
ne is
now developi
ng so fast, the desig
n of fixture Ye Hao, processi
ng fixture Ye Hao, a
nyway, the developme
nt of this i
ndustry isvery good. Fixture is actually used to tightly clamp the parts. I
n the desig
n of special fixtures to co
nsider a lot of factors such as the positio
ni
ng of theworkpiece program, how to clamp theworkpiece a
nd other issues. The subject of this paper is a pla
netary frame of the processi
ng tech
nology desig
n a
nd fixture desig
n, the parts are disk parts, i
n the processi
ng of its accuracy there are some correspo
ndi
ng requireme
nts. So be sure to have a special fixture to e
nsure its
normal processi
ng. O
n the basis of a full u
ndersta
ndi
ng of the role of the pla
net carrier, the role of its parts for a
nalysis, drawi
ng parts a
nd rough map, the preparatio
n of processi
ng routes. Determi
ne the processi
ng parameters of each process, fill i
n the process card a
nd process card. The fixture desig
n is a special drilli
ng fixture desig
ned for machi
ni
ng M14X1.5-6H threaded holes. Its desig
n co
nte
nts i
nclude positio
ni
ng a
nd positio
ni
ng of the clampi
ng program, positio
ni
ng a
nd clampi
ng eleme
nts. The desig
n of the clampi
ng body, the selectio
n of the guide device, the calculatio
n of the drilli
ng force. Fi
nally, draw the fixture assembly drawi
ngs a
nd fixture parts. Keywords：Pla
netary frame, processi
ng tech
nology, M14X1.5-6H, drilli
ng fixture 目录 摘要I ABSTRACT II 第1章绪论1 1.1夹具的发展要求1 1.2设计夹具体的要点1 1.3机床夹具在机械加工中的作用2 第2章零件的分析3 2.1零件的作用3 2.2零件的工艺分析3 2.2.1零件的组成表面3 2.2.2零件的技术要求3 2.2.3零件的形位公差4 第3章零件工艺规程的设计5 3.1零件生产类型的确定5 3.2确定零件的材料及制造方式5 3.3选择加工的定位基准6 3.4加工工艺路线的制定7 3.5选择加工设备和工艺装备8 3.5.1机床选用8 3.5.2选择刀具8 3.5.3选择量具8 3.6各工序工步加工余量的计算8 3.7确定切削用量及基本工时11 第4章专用夹具设计24 4.1问题的提出24 4.2夹具设计对定位元件的基本要求24 4.3确定定位方案与定位元件的原则24 4.4夹紧装置设计的基本要求及遵循原则24 4.5定位方案及定位元件的确定与选择25 4.5.1定位方案的确定25 4.5.2定位元件的确定25 4.6夹紧方案及装置的确定与选择25 4.6.1夹紧方案的确定25 4.6.2夹紧元件的确定25 4.7夹具体的确定25 4.8导向装置的确定26 4.9钻削力的计算26 4.10定位误差分析27 结论29 致谢30 参考文献31