机械5

DT530变速器设计与计算 摘要 该说明书叙述了DT530变速器的设计和其计算过程，从设计的三轴五档变速器的几种设计方案中综合考虑齿轮的耐用性、换挡平稳性和传动比等因素选择最佳方案，在速比分配后对各种典型零部件先做了结构分析和设计，其中齿轮与轴的结构是重点，因为它们的结构尺寸和它们之间的位置关系决定了整个变速器的尺寸与形状，并且决定了整个变速器的性能。轴系零部件设计完成以后，根据这一点可计算出各个齿轮的受力，整个轴系的结构及作用关系也随之确定，根据这一点可以进一步的计算出轴上作用力对轴系零件，包括齿轮、轴、轴承等做了全面的校核，其中齿轮校核包括接触应力和弯曲应力的整体校核，各轴和轴承则根据各档位工作时的综合情况可以进行灵活的选择，仅校核了最危险的情况。最后根据自己个人的设计心得提出有建设性的意见。 关键词：变速器，齿轮，轴，轴承，力，力矩，弯矩。 The Desig
n a
nd Calculatio
n of Automatic Tra
nsmissio
n DT530 Abstract The i
nstructio
n book describes the desig
n a
nd calculati
ng process of the automatic tra
nsmissio
n DT530,has chose
n the optimal pla
n from the several desig
ned pla
ns of the tri-axle five-speed tra
nsmissio
n co
nsideri
ng the durability of the gears、the stability of shifti
ng a
nd the velocity ratio.After deliveri
ng the velocity ratio,the structure a
nalysis a
nd desig
n of the represe
ntative parts are made,the gears a
nd shafts whose structure dime
nsio
n size determi
nes the dime
nsio
n size a
nd shape of the whole tra
nsmissio
n are poi
nts of them.whe
n the desig
n of the parts o
n-shaft are fi
nished,we ca
n calculate the forces which the gears bear,the structures of the whole shafti
ng parts a
nd the relatio
nship amo
ng them are determi
ned ,too.So,we ca
n future calculate the positio
n a
nd mag
nitude of the forces o
n shafts.The
n the beari
ng stre
ngth of shafti
ng parts,i
ncludi
ng the bears、shafts a
nd beari
ngs,has bee
n checked overall.The checki
ng of the gears’ beari
ng stre
ngth i
ncludes the checki
ng of co
ntact stress a
nd be
ndi
ng stress,a
nd the o
nes of the shafts’ a
nd beari
ng’ stre
ngth are made flexibly accordi
ng to the differe
nt speed situatio
n i
n which they work, a
nd o
nly the most da
ngerous o
nes of them are checked...I
n the e
nd,it promotes several feasible ways to improve the desig
n accordi
ng to the perso
nal desig
ni
ng experie
nce. Key words:automatic tra
nsmissio
n,gear,shaft,beari
ng,force,torque,be
ndi
ng mome
nt 目录 第一章变速器方案设计……………………………………………1 1.1变速器的研究背景和意义………………………………………………1 1.2变速器型式选择…………………………………………………………3 1.3原始数据…………………………………………………………………4 1.4各齿轮齿数表……………………………………………………………4 1.5各挡最终速比计算………………………………………………………5 第二章轴系受力分析………………………………………………6 2.1作用与齿轮上的力和力矩………………………………………………7 2.2各轴轴承支反力计算……………………………………………………13 第三章轴系零件设计计算…………………………………………14 3.1齿轮传动强度设计计算…………………………………………………15 3.2变速器轴的强度校核计算………………………………………………26 3.3轴承寿命计算……………………………………………………………28 3.4花键联接的强度计算……………………………………………………29 结束语…………………………………………………………………30 致谢……………………………………………………………………31 参考文献………………………………………………………………32