机械5

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，里面设计的是柱塞泵泵体的加工工艺及钻削2XM10-7H螺纹底孔。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的三维图纸，零件图纸，还有毛坯图纸都画出来。 设计专用夹具的时候，将定位方案，还有夹紧方案都定下来，选择定位零部件，夹紧零部件，确定导向装置钻套等等。将切削力和夹紧力的数值算出来。里面的夹紧采用夹紧盘，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。 关键词：柱塞泵泵体、加工工艺、钻削、2XM10-7H螺纹底孔、设计 ABSTRACT The structure of moder
n machi
nery i
ndustry has cha
nged greatly. For processi
ng u
nits, the i
nflue
nce of desig
n level isvery critical. The developme
nt of the jig i
ndustry isvery fast. I
n the paper, the processi
ng tech
nology of the plu
nger pump body a
nd the bottom hole of the 2XM10-7H screw thread are desig
ned. I
n the begi
n
ni
ng, the partswere elaborated, the
n the form of the bla
nkswas determi
ned, the process routewas fixed, a
nd the machi
ni
ng allowa
nce, the cutti
ng margi
n a
nd so o
nwere fixed. Use drawi
ng software to draw 3D drawi
ngs, parts drawi
ngs a
nd rough drawi
ngs of parts. Whe
n the special fixture is desig
ned, the positio
ni
ng scheme a
nd the clampi
ng scheme are fixed, the positio
ni
ng parts are selected, the parts are clamped, the drill sleeves of the guidi
ng device are determi
ned, a
nd so o
n. Thevalue of cutti
ng force a
nd clampi
ng force is calculated. The clampi
ng plate is used i
n the paper clampi
ng. The clampi
ng method is
not complicated, so thewhole device isvery co
nve
nie
nt, a
nd the clampi
ng requireme
nts ca
n be completely realized. Keywords: plu
nger pump body, processi
ng tech
nology, drilli
ng, 2XM10-7H thread bottom hole, desig
n 目录 摘要I ABSTRACT III 1零件的工艺性分析1 1.1零件的作用1 1.2零件的工艺性审查2 1.3零件的组成表面、技术要求分析2 1.3.1零件的组成表面分析2 1.3.2零件的技术要求分析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工艺路线的选择、比较与确定7 2.3.1加工工艺路线的选择7 2.3.2加工工艺路线的比较与确定8 2.4零件毛坯的确定9 2.4.1毛坯的结构工艺要求9 2.4.2毛坯形状、尺寸确定的要求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12 3专用夹具设计23 3.1机床夹具的介绍23 3.2问题的提出23 3.3选择定位方案和定位元件23 3.4选择夹紧方案和夹紧元件25 3.5夹具体的设计25 3.6导向装置选择26 3.7切削力计算27 3.8夹紧力计算27 3.9定位误差分析28 结论29 致谢30 参考文献31