机械5

4T三轴式五档机械滑移齿轮式汽车变速器设计-变速箱 摘要 汽车的行驶状况很复杂，汽车的载货量,道路坡度，路面状况以及交通状况等都要求汽车的牵引力和车速具有较大的变化范围。这就是为什么汽车需要一套可以改变速度的变速系统的原因了。汽车变速器就是协调发动机的转速和车轮的实际行驶速度，用来适应汽车各种运行状况的装置。汽车变速器主要分为机械手动变速器和自动变速器两大类。传统的变速器以手动式为主，价格低廉，至今仍有广泛应用。自动变速器操控性和安全性能比较好，是汽车变速器的发展主流。传统变速器设计周期较长，所以更新速度不是很快。不少公司都没有设立独立的变速器研发机构和生产机构。而是委托专门的变速器生产商生产，甚至直接购买通用的变速器产品。近几年来，计算机技术的飞速发展带动了传统工业的蓬勃发展。在汽车行业，很多大型的计算机辅助软件，大大减少了产品的研发周期，降低了开发难度。 关键词：汽车；变速器；设计 ABSTRACT Desig
n summary of co
nditio
n of vehicle auto tra
nsmissio
n is complex, tabulatio
n of cars, road slopes, road co
nditio
ns a
nd traffic co
nditio
ns, a
nd so requires tractio
n a
nd speed has a large ra
nge of cars. That is why the car
needs a ca
n cha
nge the speed of the speed-cha
nge system of reaso
n. Auto tra
nsmissio
n is to coordi
nate the e
ngi
ne speed a
nd the actual speed of the wheels, to adapt to the worki
ng co
nditio
n of vehicle u
nit. Automobile tra
nsmissio
ns are divided i
nto tra
nsmissio
n a
nd automatic tra
nsmissio
n two ki
nds of Ma
nipulator. Traditio
nal tra
nsmissio
n-ma
nual-domi
nated, low price, still widely used. Automatic tra
nsmissio
n operatio
n a
nd better safety, is the developme
nt of automotive tra
nsmissio
n. Traditio
nal tra
nsmissio
n cycle is lo
nger, so update speed is
not very fast. Ma
ny compa
nies does
not establish i
ndepe
nde
nt of tra
nsmissio
n research a
nd developme
nt i
nstitutio
ns a
nd age
ncies. It commissio
ned a specialized ma
nufacturer of tra
nsmissio
ns, or eve
n ge
neral tra
nsmissio
n products for direct purchase. I
n rece
nt years, the rapid developme
nt of computer tech
nology has led the traditio
nal i
ndustry to flourish. I
n the automotive i
ndustry, ma
ny large computer aided software sig
nifica
ntly reduces product developme
nt cycles a
nd reduce developme
nt difficulties. Keywords: Automotive；Tra
nsmissio
n；Desig
n 目录 第一章课题依据1 1.1课题依据1 1.2任务要求1 第二章总体方案设计3 第三章变速器主要参数的确定4 3.1变速器档数及各党传动比: 4 3.2变速器齿轮参数确定5 3.3变速器圆柱齿轮的设计计算8 3.4变速器齿轮强度要求与材料选择9 3.5变速器轴的设计计算12 第四章零件强度校核13 4.1变速器齿轮的强度计算13 4.2变速器轴的计算校核16 4.3变速器轴承选择17 结束语18 致谢19 参考文献20