毕业设计（论文）驱动桥毕业设计.doc

毕业设计（论文）驱动桥毕业设计
摘 要
驱动桥是构成汽车的四大总成之一一般由主减速器差速器车轮传动装置和驱动桥壳等组成它位于传动系末端其基本作用是增矩降速承受作用于路面和车架或车身之间的力它的性能好坏直接影响整车性能而对于载重汽车显得尤为重要采用传动效率高的单级减速驱动桥已经成为未来载重汽车的发展方向
本文参照传统驱动桥的设计方法进行了载重汽车驱动桥的设计本次设计首先对驱动桥的特点进行了说明根据给定的数据确定汽车总体参数再确定主减速器差速器半轴和桥壳的结构类型及参数并对其强度进行校核数据确定后利用AUTOCAD建立二维图再用CATIA软件建立三维模型最后用CAITA中的分析模块对驱动桥壳进行有限元分析
关键词驱动桥CADCATIA有限元分析
Abstract
Drivie axle is one of the four parts of a car it is generally constituted by the main gear box the differential device the wheel transmission device and the driving axle shell and so on it is at the end of the powertrainIts basic function is increasing the torque and reducing speed and bearing the force between the road and the frame or bodyIts performance will have a direct impact on automobile performanceand it is particularly important for the truck Using single stage and high transmission efficiency of the drive axle has become the development direction of the future trucks
This article referred to the traditional driving axles design method to carry on the truck driving axles designIn this designfirst part is the introduction of the characteristics of the drive axleaccording to the given date to calculate the parameters of the automobilethen confirm the structure types and parameters of the Main reducer differential mechanismhalf shaft and axle housingthen check the strength and life of themAfter confirming the parameters using AUTOCAD to establish 2 dimensional modelthen using CATIA establish 3 dimensional model Finally using the analysis module in CATIA to finite element analysis for the axle housing
Key words drive axleCADCATIAfinite element analysis
目 录
1 绪论 1
11 驱动桥简介 1
12 国内外研究现状 2
13 驱动桥设计要求 2
2 驱动桥设计 4
21 主减速器设计 5
com 主减速器的结构形式 5
com 主减速器基本参数选择与计算载荷的确定 7
com 小结 17
22 差速器设计 17
com 对称锥齿轮式差速器工作原理 17
com 对称式圆锥行星齿轮差速器的结构 18
com 对称式圆锥行星齿轮差速器的设计 19
com 小结 23
23 驱动半轴的设计 23
com 结构形式分析 24
com 全浮式半轴的结构设计 25
com 全浮式半轴的强度计算 25
com 半轴的结构设计及材料与热处理 26
com 半轴花键的