轿车驱动桥设计
轿车驱动桥设计
摘 要
随着汽车工业的发展和汽车技术的提高，驱动桥的设计和制造工艺都在日益完善。驱动桥和其他汽车总成一样，除了广泛采用新技术外，在结构设计中日益朝着“零件标准化、部件通用化、产品系列化”的方向发展及生产组织专业化目标前进。
本说明书中，根据给定的参数，首先对主减速器进行设计。主要是对主减速器的结构，以及几何尺寸进行了设计。主减速器的形式设计为单级主减速器。而主减速器的齿轮形式主要有螺旋锥齿轮、双曲面齿轮、圆柱齿轮和蜗轮蜗杆等形式。本次设计采用的是齿轮形式是渐开式圆柱斜齿轮。其次，对差速器的形式进行选择，差速器的形式主要分为普通对称式圆锥行星齿轮差速器和防滑差速器两种。本次设计采用普通对称式圆锥行星齿轮差速器。最后，对半轴的结构、支承形式，以及桥壳的形式和特点进行了分析设计。本次设计采用半浮式半轴和整体式驱动桥壳。在设计之后对以上的零件进行了强度的校核，并用AUTOCAD和SOLIDWORKS绘制了二维和三维的图纸。 关键词：驱动桥、主减速器、差速器、ATUOCAD、SOLIDWORKS
轿车驱动桥设计
Transaxle of saloon
ABSTRACT
With the development of the automotive industry and vehicle technology to improve the design and manufacturing process of the drive axle are increasingly improved. Drive Axle and other automotive assembly, in addition to the widespread adoption of new technology in the structural design, the direction of development and production organizations increasingly toward \ This manual, according to the given parameters, the first main gear box design. The structure of the main gear box, and the geometric dimensions of the design. The main gear box in the form of single-stage main gear box and two-stage main gear box. Final drive gear mainly in the form of spiral bevel gears, hypoid gears, cylindrical gears, worm and other forms. This design is integral single-stage main gear box, gear forms of hypoid gears. Secondly, in the form of differential selection, differential forms are divided into ordinary symmetric cone planetary gear differential and limited slip differential two. The design uses a common symmetric cone planetary gear differential. Finally, on the structure of the axle, supporting forms, and the axle housing forms and characteristics of the analysis and design. The design uses a full floating axle shaft bearing and the overall drive axle housing.After finishing the whole design,I use AUTOCAD and SOLIDWORKS to draw 2-D and 3-D pictures.
Keywords: Drive axle、Main reducer、Differential、AUTOCAD、SOLIDWORKS
广东技术师范学院本科毕业设计
目录
1章 绪论 ................................................................................................................................... 1 1.1 概述 ........................................................................................................................... 1 1.2 驱动桥设计与分析的理论研究现状 ....................................................................... 1 1.3 设计驱动桥是应满足如下要求 ............................................................................... 2 2章 驱动桥结构方案的选定 ................................................................................................... 2 2.1 主减速器的结构形式 ............................................................................................... 3 3章 主减速器的设计 ............................................................................................................... 3 3.1 主减速器的结构形式 ............................................................................................... 3 3.2 主减速器的类型 ....................................................................................................... 3 3.3 主减速器主、从动斜齿圆柱齿轮的支承形式 ....................................................... 4 3.4 主减速器的基本参数选择与计算 ........................................................................... 4 3.4.1 主减速器主减速比i0的确定......................................................................... 5 3.4.2 主减速器齿轮计算载荷的确定 ................................. 5 3.4.3 驱动桥的离地间隙 ........................................... 8 3.5 主减速器渐开线斜齿圆柱齿轮设计计算表 ............................. 8 3.6 主减速器的齿轮材料及其热处理 ......................................................................... 13 3.7 主减速器轴承的计算 ............................................................................................. 13 3.7.1 作用在主减速器主动齿轮上的力 .............................................................. 15 3.7.2 主减速器轴承载荷的计算和校核 .............................................................. 17 4章 差速器设计 ....................................................................................................................... 19 4.1 对称式圆锥行星齿轮差速器的差速原理 ............................................................. 19 4.2 对称式圆锥行星齿轮差速器的结构 ..................................................................... 20 4.3 对称式圆锥行星齿轮差速器的设计 ..................................................................... 21
4.3.1 差速器齿轮的基本参数的选择 ................................................................ 21 4.3.2 差速器齿轮的几何计算 ............................................................................ 23 4.3.3 差速器齿轮的强度校核 ............................................................................ 25
5章 半轴的设计 ....................................................................................................................... 26 5.1 半轴的型式 ............................................................................................................... 26 5.2 半轴的设计计算 ....................................................................................................... 27 5.3 三种可能工况 ........................................................................................................... 28 5.4 半浮式半轴计算载荷的确定 ................................................................................... 29 5.5 半轴的结构设计及材料与热处理 ........................................................................... 30 6章 万向节设计 ......................................................................................................................... 1 6.1 万向节结构选择 ....................................................................................................... 31 6.2 万向节的材料及热处理 ........................................................................................... 31 7章 驱动桥壳设计 ................................................................................................................... 31 7.1 驱动桥壳的选型 ....................................................................................................... 32 7.2 桥壳的静弯曲应力计算 ........................................................................................... 32 7.3 在不平路面冲击载荷作用下的桥壳强度计算 ....................................................... 33 7.4 汽车以最大牵引力行驶时的桥壳强度计算 ........................................................... 33