论文总字数：24953字

摘 要

“汽车CAD系统”的设计是采用Visual Basic 6.0和AutoCAD 集成的系统开发环境，以Visual Basic语言为编程实现工具；它充分的利用了模块化的开发设计思想和方法，把数据库、图形集成、显示技术同机械制造业进行了结合，可以普遍用于汽车、车辆产品开发设计、产品改造设计等。论文首先介绍了汽车CAD系统的发展和成果以及驱动桥的结构和工作原理等，然后详细论述了如何用Visual Basic 6.0制作登陆模块、主控模块和计算校核模块以实现对驱动桥各主要零件以及部件件的强度计算校核，最后介绍了驱动桥计算校核模块的开发过程和设计技巧与方法。

关键词：汽车 CAD系统 Visual Basic 驱动桥 数据库

Auto CAD System——The Check and Calculation Module of drive axle

Abstract

The design of auto CAD system adopts the integrated development environment of Visual Basic 6.0 and AutoCAD system.It uses VB language as the tool for programming.This system,which can generally used in automobile,development design of vehicle product and product transformation, makes full use of the thought of modular design,and combine the database,graphics integration and display technology with mechanical manufacturing industry. The paper firstly introduces the development and achievements of the CAD system and the structure and working principle of the drive axle. Secondly, it discusses how to use Visual Basic 6.0 to make landing module, master control module and calculation check module in order to calculate and check the structure parameters, the performance and strength of components of the drive axle. At last, the paper introduces the development process and design method of the drive axle calculating check module.

Key Words: Automobile; CAD system; Visual Basic; drive axle; Database

目录

摘要...........................................................................................Ⅰ

Abstract....................................................................................Ⅱ

第一章 绪论............................................................................................1

1.1 选题背景......................................................................................................1

1.2 汽车工业的发展..........................................................................................1

1.1.1 世界汽车发展史.................................................................................1

1.1.2 中国汽车发展史.................................................................................3

1.3 CAD系统的发展和现状............................................................................5

1.3.1 CAD技术发展简史............................................................................5

1.3.2 设计软件（Visual Basic)简介............................................................6

1.4 汽车驱动桥简介..........................................................................................6

1.4.1 汽车驱动桥的概述与分类..................................................................6

1.4.2 汽车驱动桥的组成与工作原理..........................................................7

1.5 设计题目的概述...........................................................................................8

1.6 课题主要步骤...............................................................................................8

1.7 驱动桥模块计算校核内容...........................................................................9

1.8 驱动桥模块计算校核设计步骤.................................................................10

第二章 汽车CAD系统的设计...............................................................11

2.1 设计所需的系统支持.................................................................................11

2.2 设计模块划分.............................................................................................11

2.3 汽车CAD系统设计流程图......................................................................12

2.4 汽车CAD系统的设计特点......................................................................13

第三章 驱动桥模块的窗体设计与程序编译......................................14

3.1 登陆模块....................................................................................................14

3.1.1 窗体的界面设计................................................................................14

3.1.2 窗体的程序编译................................................................................16

3.2 主控模块....................................................................................................16

3.2.1 窗体的界面设计................................................................................16

3.2.2 窗体的程序编译................................................................................18

3.3 驱动桥的计算校核模块............................................................................18

3.3.1 花键部分应力计算..........................................................................18

3.3.2 差速器轴承1寿命计算..................................................................23

3.4 标准模块.....................................................................................................27

第四章 数据库应用程序的开发................................................................29

4.1概述.......................................................................................................29

4.2 数据库的建立....................................................................................29

第五章 驱动桥模块的设计技巧...........................................................................32

5.1 错误陷阱的设置................................................................................32

5.2 退出防误触.......................................................................................33

5.3 标题的滚动.......................................................................................34

5.4 标题的闪烁.......................................................................................35

第五章 总结..........................................................................................37

参考文献..................................................................................................39

致谢..........................................................................................................40

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