论文总字数：24328字

摘 要

汽车CAD系统,即应用计算机系统辅助语言，把模块化设计思想、数据库、计算校核方法和生产制造进行有机结合，建立、修正和完善汽车的开发过程。它基于Visual Basic 6.0和AutoCAD 2004集成开发环境，以Visual Basic语言为编程实现工具。利用汽车CAD系统研究和设计汽车模块，可以将汽车设计过程涉及的汽车制造、机械原理等学科知识与其他交叉领域相互融合，缩短汽车整体开发时间。

本文分为五个部分，第一章绪论，主要介绍了汽车驱动桥模块设计背景、汽车行业现状及发展、驱动桥、以及Visual Basic 6.0。第二章汽车CAD系统的设计，是对设计过程做的简单介绍。第三章为程序编写的详细说明，利用Visual Basic 6.0制作登录模块、主菜单控制模块、主要参数模块和计算校核模块来实现对驱动桥后桥强度验算、半轴强度验算、后桥轮毂轴承的寿命计算等的校核。

关键词：汽车CAD系统 驱动桥 Visual Basic 6.0

Automotive CAD system of drive axle calculation check module 2

Abstract

Automotive CAD system, that is, the application of computer systems which organically combine the modular design ideas with databases, calculation methods and manufacturing methods，to fish the vehicle process of establishment, modification and optimization. It is based on Visual Basic 6.0 and AutoCAD 2004 integrated development environment, Visual Basic language for the programming tool. The automotive CAD system is used to research and design the automobile module, which can meet the requirements of multidisciplinary integration and parallelization in the process of automobile design, and shorten the overall development time of the vehicle.
This paper is divided into five parts. The first chapter introduces the design background of automobile axle module, the current situation and development of automobile industry, driving axle, and Visual Basic 6.0. Chapter 2 The design of automotive CAD system is a brief introduction to the design process. The third chapter is a detailed description of the preparation of the program, the use of Visual Basic 6.0 production logon module, the main menu control module, the main parameters of the module and calculate the calibration module To achieve the bridge axle bridge strength checking, axle strength checking, rear axle wheel bearing life calculation and so on.


Keywords: Auto CAD systems；Drive axle；Visual Basic 6.0

目 录

摘要·····························································I

Abstract························································II

第一章 绪论·····················································1

1.1 研究背景···················································1

1.1.1 概述·····················································1

1.1.2 国内外汽车发展现状及其趋势·······························1

1.2 驱动桥·····················································2

1.2.1 国内外研究···············································2

1.2.2 驱动桥概述···············································2

1.3 汽车CAD的应用以及发展现状································3

1.3.1 概述·····················································3

1.3.2 CAD发展历程·············································3

1.3.3 汽车模具CAD技术········································3

1.4 Visual Basic 6.0···············································4

1.4.1 Visual Basic的发展历史·····································4

1.4.2 Visual Basic概述···········································5

第二章 汽车CAD系统的设计·····································6

2.1 设计所需的系统支持·········································6

2.2 汽车CAD系统························`···················`··7

2.3 汽车CAD系统设计流程图····································8

2.4 设计模块···················································9

2.5 建立和保存工程的步骤·······································9

第三章 驱动桥计算校核模块2的窗体设计与程序编译··········11

3.1 登录窗体模块··············································11

3.1.1登陆页面设计分析·······························`·········11

3.1.2登陆模块流程图··························`···············11

3.1.3界面设计具体步骤········································12

3.1.4编程代码····································`············13

3.1.5登陆运行界面·······························`·············14

3.2 主菜单模块················································14

3.2.1菜单编辑器的使用说明····································14

3.2.2界面设计具体步骤········································15

3.2.3编程代码················································16

3.2.4主菜单运行界面··········································17

3.3 主要参数模块··············································17

3.3.1界面设计具体步骤········································17

3.3.2编程代码················································18

3.3.3主要参数运行界面········································19

3.4 标准模块··················································20

3.4.1使用标准模块············································20

3.4.2创建标准模块············································20

3.4.3声明公共参量············································21

3.5驱动桥计算校核模块2········································21

3.5.1 “加速行驶时重量转移系数m2p” 编写实例···················21

3.5.2“加速行驶时重量转移系数m2p”的运行····················26

3.5.3 “加速行驶时重量转移系数m2p”的结果验算··················28

3.6 程序调试··················································28

第四章 数据库的开发···········································31

4.1Visual Basic 6.0数据库开发····································31

4.2建立数据库的具体步骤·······································31

4.3数据库调用具体步骤·········································33

第五章 汽车驱动桥模块设计程序优化··························35

5.1登陆界面优化···············································35

5.2 计算结果的优化············································37

5.3背景图片的优化·············································39

第六章 总结···················································42

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