机械5

支承套零件工艺及工装设计 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， 本次研究的对象是支承套。研究内容有工艺分析及工装设计。支承套是机构或机器上不能缺少的零件之一，为机构或机器的正常运作提供保障。通过对零件图的分析决定设计钻2-Ф15H7孔，采用Z3040摇臂钻床。 一开始阐述了零件，之后将毛坯的制造形式确定下来，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：支承套、工艺、工装、2-Ф15H7孔、Z3040摇臂钻床 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 object of this study is the support sleeve. The research co
nte
nt i
ncludes process a
nalysis a
nd tooli
ng desig
n. The support sleeve is o
ne of the i
ndispe
nsable parts of the mecha
nism or the machi
ne, a
nd provides guara
ntee for the
normal operatio
n of the mecha
nism or the machi
ne. Through the a
nalysis of the parts drawi
ng, itwas decided to desig
n the drill hole 2-Ф15H7 a
nd use the Z3040 radial drilli
ng machi
ne. At the begi
n
ni
ng, the partswere described. After that, the ma
nufacturi
ng method of the bla
nkwas 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: support sleeve, process, tooli
ng, 2-i
nch 15H7 hole, Z3040 radial drilli
ng machi
ne 目录 摘要I ABSTRACT II 第一章绪论1 1.1机械加工工艺规程的概述1 1.2机械加工工艺规程的作用1 1.3机械加工工艺规程制定的原则1 1.4机械加工工艺规程应满足的使用要求2 1.5机床夹具的概述3 第二章零件的工艺性分析4 2.1零件的组成表面、技术要求分析4 2.1.1零件的组成表面分析4 2.1.2零件的技术要求分析4 2.1.3零件的形位公差分析4 2.2零件的作用4 2.3零件的工艺性审查5 2.4确定零件的生产类型6 第三章拟定零件工艺路线及确定毛坯7 3.1选择定位基准7 3.1.1粗基准的选择7 3.1.2精基准的选择7 3.2工艺过程设计中应考虑的主要问题7 3.2.1加工方法选择的原则7 3.2.2加工阶段的划分8 3.2.3工序的合理组合9 3.3制定工艺路线9 3.4零件毛坯的确定11 3.5机床、夹具、刀具及量具的确定12 3.6零件加工余量的确定13 3.7切削用量及时间定额的计算15 第四章专用夹具设计41 4.1问题的提出41 4.2选择定位方案和定位元件41 4.3选择夹紧方案和夹紧元件42 4.4夹具体的设计42 4.5其他零件的设计43 4.6导向装置选择45 4.7钻削力计算45 4.8夹紧力计算46 4.9定位误差分析46 结论48 致谢49 参考文献50