机械5

基于三维的柴油机气缸体三面钻削组合机床总体及右主轴箱设计 摘要：柴油机气缸体是需要大量生产的零件。为了提高加工精度和生产效率，需要设计一台组合机床来改善它的加工情况。本课题设计一台加工柴油机气缸体的三面钻削组合机床，主要完成机床总体和右主轴箱的设计工作。根据柴油机气缸体的结构特点、加工部位、尺寸精度、表面粗糙度及生产率等要求，确定该机床为单工位卧式组合机床，机床采用卧式单工位三面加工的方案，加工和装配的工艺性好，零件装夹方便；为确保加工精度，采用“三面”的定位方案；为实现无级调速，操作可靠，选择液压滑台；根据零件的大小及被加工孔的位置确定主轴箱的轮廓尺寸；由加工工艺选择滚珠轴承主轴，通过计算扭矩确定主轴和传动轴的直径；齿轮的模数是通过类比法确定；齿轮齿数和中间传动轴的位置是由“计算、作图和多次试凑”相结合的办法确定。本组合机床加工效率高，成本低，加工精度高，操作使用方便，减轻了工人的劳动强度，提高了劳动生产率。 关键词：组合机床；主轴箱；主轴；传动轴；柴油机 Desig
n of Ge
neral a
nd Right Headstock of Modular Machi
ne Tool for Precisio
n drilli
ng Holes of Three-Side Based o
n Cyli
nder Body of Three-dime
nsio
nal Diesel E
ngi
ne Abstract: The diesel cyli
nder body is a productwhich
needs mass productio
n. I
n order to improve the dispositio
n a
nd the productio
n efficie
ncy, desig
ni
ng a high effective modular machi
ne tool is
needed to improve the productio
n of the diesel cyli
nder body. This topic is the desig
n of ge
neral scheme a
nd right headstock of modular machi
ne tool for precisio
n drill holes o
n three-side of diesel cyli
nder body. Accordi
ng to the request of co
nstructio
n features, processi
ng spot, size precisio
n, surface rough
ness a
nd productivity of the diesel cyli
nder body, sets the machi
ne tool for si
ngle locatio
n horizo
ntal type modular machi
ne tool. The modular machi
ne tool uses the horizo
ntal-type si
ngle locatio
n three-side processi
ng pla
n, the processi
ng a
nd assembly tech
nology capability is good, a
nd it clamps co
nve
nie
ntly. I
n order to guara
ntee the processi
ng precisio
n, the localizatio
n pla
n use"three surfaces". I
n order to impleme
nt the u
nlimited speed regulatio
n, safe a
nd reliable, therefore choose hydraulic pressure slidi
ng table. Accordi
ng the size of compo
ne
nts a
nd the positio
n of the hole that is processed to set the overall size of the headstock. Choosi
ng the taper beari
ng spi
ndle by processi
ng craft. The spi
ndle a
nd drive shaft diameter is decided through computatio
n torque. The gear modulus is decided through the correlatio
n method. The gear me
ntio
ns a
nd the positio
n of i
ntermediate propeller shaft is decided by the mea
ns"cou
nt, drawi
ng a
nd tries to collect ma
ny times". This modular machi
ne tool has such adva
ntages: it has high efficie
ncy, the cost is low, the processi
ng precisio
n is high, it is easy to operate, it reduces theworker’s labor i
nte
nsity, a
nd it e
nha
nces the productivity. Keywords: modular machi
ne tool；headstock；spi
ndle；drive shaft；diesel e
ngi
ne 目录 1前言1 2总体设计2 2.1总体方案论证2 2.1.1加工对象工艺性的分析2 2.1.2机床配置型式的选择2 2.1.3定位基准的选择2 2.2确定切削用量及选择刀具3 2.2.1选择切削用量3 2.2.2计算切削力、切削扭矩及切削功率5 2.2.3选择刀具结构6 2.3组合机床总体设计—“三图一卡” 6 2.3.1被加工零件工序图6 2.3.2加工示意图6 2.3.3机床联系尺寸图8 2.3.4机床生产率计算卡12 2.4夹具轮廓尺寸的确定17 3组合机床右主轴箱设计18 3.1绘制右主轴箱设计原始依据图18 3.2主轴结构型式的选择及动力计算19 3.2.1主轴结构型式的选择19 3.2.2主轴直径和齿轮模数的初步确定19 3.2.3主轴箱动力计算20 3.3主轴箱传动系统的设计与计算20 3.3.1计算驱动轴、主轴的坐标尺寸20 3.3.2拟订主轴箱传动路线20 3.3.3传动轴的位置和转速及齿轮齿数21 3.4主轴箱中传动轴坐标的计算及传动轴直径的确定27 3.4.1传动轴坐标的计算27 3.4.2传动轴轴径的确定28 3.5轴的强度校核28 3.6齿轮校核计算30 3.7主轴箱中传动轴坐标检查图的绘制33 4三维建模34 4.1建模简介34 4.2建模过程35 5结论38 参考文献39 致谢40 附录41