机械5

飞机助力器液压操纵杆加工工艺及夹具设计 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，里面设计的是飞机助力器液压操纵杆的加工工艺及钻削Ф1.5圆柱孔。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。用绘图软件将零部件，零件图纸，还有毛坯图纸都画出来。设计专用夹具的时候，将定位的办法，还有夹紧办法都定下来，确定下来定位零部件，夹紧零部件，确定下导向庄子等等。将切削力和夹紧力的数值算出来。里面的夹紧用的是液压实现的，这种夹紧方式不复杂，所以整个装置都是非常便利的，夹紧要求完全可以实现。 在将夹具的装配图还有非标零件图纸画出来的时候用的是AutoCAD程序。 关键词：飞机助力器、液压操纵杆、钻削 ABSTRACT The structure of moder
n machi
nery i
ndustry has cha
nged greatly, a
nd the level of desig
n tech
nology isvery importa
nt for processi
ng u
nits. The developme
nt of fixture i
ndustry isvery fast. I
n this paper, the processi
ng tech
nology of hydraulic co
ntrol rod of aircraft booster a
nd drilli
ng_1.5 cyli
ndrical hole are desig
ned. At first, the parts are elaborated, the
n the processi
ng form of the bla
nk is determi
ned, the process route is determi
ned, a
nd the machi
ni
ng allowa
nce, cutti
ng allowa
nce a
nd so o
n are determi
ned. Use drawi
ng software to draw parts, parts drawi
ngs a
nd bla
nk drawi
ngs. Whe
n desig
ni
ng the special fixture, the positio
ni
ng method a
nd clampi
ng method are determi
ned, a
nd the positio
ni
ng parts, clampi
ng parts a
nd determi
ni
ng the dow
n-steeri
ng Chua
ng Tzu are determi
ned. The cutti
ng force a
nd clampi
ng force are calculated. The clampi
ng i
n the paper is realized by hydraulic pressure. This clampi
ng method is
not complicated, so thewhole device isvery co
nve
nie
nt, clampi
ng requireme
nts ca
n be fully realized. AutoCAD program is usedwhe
n drawi
ng assembly drawi
ngs of fixtures a
nd
no
n-sta
ndard parts. Keywords aircraft booster, hydraulic co
ntrol rod 目录 摘要I ABSTRACT I 1零件的工艺性分析1 1.1零件的组成表面、技术要求及形位公差分析1 1.1.1零件的组成表面分析1 1.1.2零件的技术要求分析1 1.1.3零件的形位公差分析1 1.2零件的作用1 1.3零件的工艺性审查2 1.4确定零件的生产类型3 2拟定零件工艺路线及确定毛坯4 2.1选择定位基准4 2.1.1粗基准的选择4 2.1.2精基准的选择4 2.2工艺过程设计中应考虑的主要问题4 2.2.1加工方法选择的原则4 2.2.2加工阶段的划分5 2.2.3工序的合理组合6 2.3制定工艺路线6 2.4零件毛坯的确定7 2.5机床、夹具、刀具及量具的确定8 2.6零件加工余量的确定9 2.7切削用量及时间定额的计算11 3钻Ф1.5孔专用夹具设计26 3.1机床夹具的介绍26 3.2问题的提出26 3.3选择定位方案和定位元件26 3.4选择夹紧方案和夹紧元件28 3.5夹具体的设计28 3.6导向装置选择29 3.7切削力计算30 3.8夹紧力计算30 3.9定位误差分析31 结论32 致谢33 参考文献34