中级轿车驱动桥三维设计(含CAD零件图装配图,CATIA三维图)(任务书,开题报告,论文说明书18000字,CAD图纸3张,CATIA三维图)
摘 要
本研究课题“中级轿车驱动桥三维设计”在满足各项设计参数要求的前提下，依据相关标准，在零部件的结构、材料和工艺形式等方面，采用CATIA三维建模软件进行辅助设计，具有合理的结构创新设计。本课题设计部分包括：驱动桥的结构选型与设计、主减速器的设计、差速器的设计、车轮传动装置的设计、驱动桥壳的设计、驱动桥的结构元件以及各部分零部件参数的设计和相关的软件介绍等内容，涉及到机械设计和汽车设计的多个方面。
本文对驱动桥的设计过程进行了论述，半轴采用半浮式半轴，主要介绍半轴杆径长度的确定及其强度的校核，花键联接各主要参数的确定及其强度的校核等内容；桥壳采用钢板冲压焊接整体式桥壳，主要介绍了在满足主减速器、差速器和半轴的安装之后的强度校核。CATIA作为计算机三维辅助设计的高端软件，因其强大的装配管理、功能仿真和数据管理等功能而得到广泛的应用，使得零部件的装配满足课题的要求。
主要研究内容和主要结论如下：
本课题所设计的是中级轿车的驱动桥，根据中级轿车驱动桥的特点，拟采用非断开式驱动桥，非断开式驱动桥的结构简单，且主减速器的造价低廉、工作可靠，可以被广泛应用在各种车辆上。本课题介绍了轿车后桥驱动的结构形式和工作原理，设计并计算主减速器、差速器、半轴和驱动桥壳的结构尺寸，进行各零部件的强度和使用寿命的校核，并绘制了各零部件的零件图和总装装配图。本驱动桥的结构设计合理，符合实际应用，且具有上佳的动力性和燃油经济性。
在本课题的设计中，驱动桥总成及其各零部件的设计能够尽量满足零件的标准化、部件的通用化和产品的系列化以及汽车装配的要求，制造容易，修理和保养方便，且机件工艺性好。
关键词：主减速器 差速器 半轴 桥壳 CATIA
The three-dimensional design of the intermediate cars drive axle
Abstract
The research topic “The three-dimensional design of the intermediate cars drive axle” on the premise of meeting the requirements of the various design parameters, on the basis of relevant standards, in the structure of components, materials and process forms, has a reasonable structure of innovative design, using CATIA three-dimensional modeling software to cad. The topic design part includes: the structure of the drive axle type selection and design, the design of the main reducer, differential design, the design of the wheel gear, the design of the drive axle housing, the structure of the drive axle components and each part component parameter design and the relevant software is introduced, the design to the mechanical courses and various aspects of automobile design.
The article on the drive axle of the design process were discussed, axle shaft with floating half shaft, mainly introduces half shaft rod diameter determination of length and its strength check, the spline coupling and its strength check to determine the main parameters in content; bridge shell uses the steel plate stamping welding integral bridge shell, mainly introduced to meet the Lord reducer, differential and half shaft after the installation of the intensity. CATIA as a high-end software of computer aided three-dimensional design, because of the powerful assembly simulation and data management, function management, and other functions and widely application, makes the assembly of parts to meet the requirements of the subject.
The main research contents and main conclusions are as follows:
This topic is designed by the intermediate car drive axle, according to the characteristics of the intermediate cars drive axle, the proposed breaking drive axle, the breaking of the drive axle of simple structure, and the main reducer of low cost, reliable operation, can be widely used in all kinds of vehicles. The topic introduces the structure and working principle of car rear axle drive, design and calculation of the main reducer, differential and half shaft and drive axle housing structure, size and strength and service life of parts of the check, and draw the part drawing and assembly of parts of the assembly drawing. The drive axle of structure design is reasonable, conform to the practical application, and has good power performance and fuel economy.
In the design of this topic, as far as possible the design of the drive axle assembly and its components to meet the standardization of parts, parts generalization and serialization of products and to meet the requirements of car assembly, easy to manufacture, easy to repair and maintenance, and good parts manufacturability.
Key words: Main reducer；Differential mechanism；Axle；Bridge housing；CATIA
1.6本设计的相关数据
（1）整车最大总质量：1855kg
（2）轴距：2675mm
（3）轮胎规格：205/55 R16
（4）动力型式：汽油机
（5）最高车速：211km/h
（6）变速型式：有级变速，前进档 5，倒档 1
（7）驱动转向型式：前轮转向，后轮驱动
（8）操作稳定性、行驶平顺性、制动性能等达到国家有关标准要求
（9）变速器最大传动比：6.40； 变速器最小传动比1
（10）主减器传动比：6.67
（11）最大功率(kW)：108
（12）最大功率转速(rpm)：6500
（13）最大扭矩(Nm)：183
（14）最大扭矩转速(rpm)：4000
目 录
摘要 I
ABSTRACT II
第一章 绪论 1
1.1本设计的研究目的与意义 1
1.2驱动桥国内外的发展现状 1
1.3驱动桥的总体概述 1
1.4本设计研究或解决的问题 2
1.5本设计拟采用的研究手段 2
1.6本设计的相关数据 3
第二章 驱动桥的结构选型与设计 4
2.1方案（一）非断开式驱动桥 4
2.2方案（二）断开式驱动桥 4
2.3方案（三）多桥驱动的布置 6
第三章 主减速器的设计 7
3.1主减速器结构方案的分析 7
3.2主减速器主、从动锥齿轮的支承方案 8
3.3主减速器锥齿轮设计 9
3.4主减速器锥齿轮的材料 13
3.5主减速器锥齿轮的强度计算 13
3.6主减速器锥齿轮轴承的设计计算 15
第四章 差速器的设计 16
4.1 差速器结构形式的选择 21
4.2 普通锥齿轮式差速器齿轮设计 21
4.3 差速器齿轮的材料 24
4.4 普通锥齿轮式差速器齿轮强度计算 24
第五章 车轮传动装置的设计 26
5.1 半轴的型式 26
5.2 半轴的设计、计算与校核 27
5.3 半轴的结构设计及材料与热处理 29
第六章 驱动桥壳的设计 31
6.1 桥壳的结构型式 31
6.2 桥壳的受力分析及强度计算 31
第七章 驱动桥的结构元件 33
7.1 支撑轴承的预紧 33
7.2 锥齿轮的啮合与调整 33
7.3 润滑 34
第八章 CATIA三维建模 35
8.1 主减速器齿轮建模 35
8.2 从动锥齿轮建模 36
8.3 驱动桥整体装配 37
第九章 结论 41
参考文献 42
致谢 43
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