机械5

CY11103车床后挂脚工艺及其镗孔夹具设计 摘要 现代化的机械行业结构变化很大，对于加工单位来说设计工艺水平对他们的影响是非常关键的。夹具行业的发展是非常快的，里面设计的是CY11103车床后挂脚工艺及其镗孔夹具设计。通过对零件图的分析决定设计加工Ф55H6孔镗床专用夹具，其加工镗床为T618卧式镗床。 一开始阐述了零件，之后将毛坯的加工形式确定下来，将工艺路线定下来，还有将机械加工余量，切削余量等等都定下来。绘制零件图和毛坯图。设计专用夹具的时候，将定位方案，还有夹紧方案都定下来，确定定位零部件，夹紧零部件，确定下导向装置等等。计算切削力和夹紧力。通过设计整个装置都是非常便利的，夹紧要求完全可以实现。 关键词：CY11103车床、后挂脚、工艺、镗孔、Ф55H6 ABSTRACT The structure of the moder
n machi
nery i
ndustry has cha
nged greatly. For the processi
ng u
nits, the i
nflue
nce of the desig
n process level o
n them isvery critical. The developme
nt of the fixture i
ndustry isvery fast. The desig
n of the CY11103 lathe behi
nd the foot process a
nd its bori
ng fixture desig
n is desig
ned i
n this paper. Through the a
nalysis of the parts drawi
ng,we decided to desig
n a
nd process special jigs for the bori
ng bed of 55H6 hole. The machi
ni
ng bori
ng machi
ne is a T618 horizo
ntal bori
ng machi
ne. At the begi
n
ni
ng, the partswere described, afterwhich the rough machi
ni
ng formwas determi
ned, the process routewas fixed, a
nd the machi
ni
ng allowa
nce, cutti
ng allowa
nce, etc.were determi
ned. Draw part a
nd bla
nk drawi
ngs. Whe
n desig
ni
ng a special fixture, the positio
ni
ng scheme a
nd the clampi
ng scheme are all fixed, the positio
ni
ng compo
ne
nts are determi
ned, the compo
ne
nts are clamped, the lower guide is determi
ned, a
nd the like. Calculate cutti
ng force a
nd clampi
ng force. It isvery co
nve
nie
nt to desig
n thewhole device, a
nd the clampi
ng requireme
nt ca
n be fully realized. Keywords CY11103 lathe, rear leg, crafts, bori
ng,Ф55H6 目录 摘要I ABSTRACT II 0绪论1 0.1机械加工工艺规程的概述1 0.2机械加工工艺规程的作用1 0.3机械加工工艺规程制定的原则1 0.4机械加工工艺规程应满足的使用要求2 0.5机床夹具的概述3 1零件的工艺性分析4 1.1零件的组成表面、技术要求及形位公差分析4 1.1.1零件的组成表面分析4 1.1.2零件的技术要求分析4 1.1.3零件的形位公差分析4 1.2零件的作用4 1.3零件的工艺性审查5 1.4确定零件的生产类型5 2拟定零件工艺路线及确定毛坯6 2.1选择定位基准6 2.1.1粗基准的选择6 2.1.2精基准的选择6 2.2工艺过程设计中应考虑的主要问题6 2.2.1加工方法选择的原则6 2.2.2加工阶段的划分7 2.2.3工序的合理组合8 2.3制定工艺路线8 2.4零件毛坯的确定9 2.5机床、夹具、刀具及量具的确定10 2.6零件加工余量的确定11 2.7切削用量及时间定额的计算13 3专用夹具设计30 3.1问题的提出30 3.2选择定位方案和定位元件30 3.3选择夹紧方案和夹紧元件31 3.4夹具体的设计31 3.5导向装置选择32 3.6镗削力计算32 3.7夹紧力计算33 3.8定位误差分析33 结论35 致谢36 参考文献37