汽车连杆的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，里面设计的是汽车连杆的加工工艺及夹具设计。 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的三维图纸，零件图纸，还有毛坯图纸都画出来。本次专用夹具为钻削Ф8.5及Ф10孔而设计的钻床专用夹具。设计专用夹具的时候，将定位的方案，还有夹紧方案都定下来，确定下来定位零件，夹紧部件，确定导向装置等等，将切削力和夹紧力的数值算出来。 在将夹具的装配图立体图纸画出来的时候用的是PROE软件，将装配图还有非标零件图纸画出来的时候用的是AutoCAD软件。 关键词：汽车连杆、加工工艺、钻削、Ф8.5及Ф10孔 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 automotive co
n
necti
ng rod machi
ni
ng process a
nd fixtures is desig
ned i
n this paper. 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. Use drawi
ng software to draw 3D drawi
ngs, part drawi
ngs, a
nd bla
nk drawi
ngs of parts. This special fixture is desig
ned for drilli
ng 8.5 a
nd 10 hole drilli
ng fixtures. 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 fixed, the compo
ne
nts are clamped, the guide device is determi
ned, a
nd the
numericalvalues of the cutti
ng force a
nd the clampi
ng force are calculated. The PROE software is used to draw the three-dime
nsio
nal drawi
ng of the fixture assembly drawi
ng. The AutoCAD software is used to draw the assembly drawi
ngs a
nd
no
n-sta
ndard parts drawi
ngs. Keywords: automotive co
n
necti
ng rods, machi
ni
ng tech
nology, drilli
ng, 8.5 a
nd 10 holes 目录 摘要I ABSTRACT II 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Ф8.5及Ф10孔专用夹具设计31 3.1机床夹具的介绍31 3.2问题的提出31 3.3选择定位方案和定位元件31 3.4选择夹紧方案和夹紧元件33 3.5夹具体的设计33 3.6导向装置选择34 3.7切削力计算35 3.8夹紧力计算35 3.9定位误差分析36 结论37 致谢38 参考文献39