本科学生毕业设计汽车车轮轮罩焊装夹具设计院系名称： 汽车与交通工程学院 专业班级： 车辆工程 学生姓名： 指导教师： 职 称： 教授 The Graduation Design for Bachelors DegreeDesign of Automobile Wheel Cover Welding-Installation FixtureCandidate：Specialty：Vehicle EngineeringClass：B07-2Supervisor：Prof. Heilongjiang Institute of Technology I摘 要焊装作为汽车生产过程的四大工艺之一，焊接质量的高低对轿车车身尺寸的影响至关重要，可以说，在车身制造过程中，焊装是关键工序，是整个车身制造的核心，白车身焊接质量的优劣决定了整车的制造质量。焊接夹具是保证车身焊接质量的最重要因素，焊接夹具的主要作用就是保证所有焊接冲压件之间的相对位置以及焊接件的尺寸精度，合理的夹具设计、焊点规划、焊钳选择，可以确保焊接质量，降低生产成本，提高生产效率。本文首先分析了汽车车轮轮罩焊装夹具设计的必要性和可行性；然后围绕车轮轮罩焊装夹具设计这一核心，通过对汽车焊装生产线、汽车焊装夹具的结构特点进行分析，归纳了焊装夹具的设计步骤和要点；重点对汽车车轮轮罩进行焊装工艺分析，研究了汽车车轮轮罩焊装夹具正确的夹紧位置及定位设计方式；最终完成汽车车轮轮罩焊装夹具的结构设计。全套图纸，加关键词：汽车；轮罩；焊接；夹具；设计 IIABSTRACTWelding production process as a vehicle one of the four processes, the level of welding quality on body size of car is essential, can be said that the manufacturing process in the body, welding is the key process is the core of the whole body manufacturing, white body determines the merits of quality welding vehicle manufacturing quality. Welding fixture is guarantee body welding quality most important factor, the main role of welding fixture to ensure that all welding is the relative position between the stamping and welding parts for dimensional accuracy, and reasonable fixture design, solder joint planning, welding clamp selection, to ensure weld quality, reduce production costs and increase productivity.Firstly, this paper analyzes the automobile wheel cover design of welding fixture necessity and feasibility; Then around the wheel cover on the core welding fixture design, welding production line of automobile, car welding fixture to analyze the structural characteristics, summarizes the steps and welding fixture design elements; Focus on the car hood for welding wheel analysis of the technology of automobile wheel cover clamp welding fixture correct location and orientation design approach; Finally completed the car wheel covers the structural design of welding fixture.Key words: Automobile; Wheel Casing; Welding ; Jig; Design 目 录摘要 .I Abstract .II第 1 章 绪论 .11.1 课题的背景及意义 .11.2 国内外研究现状 .21.3 汽车焊装夹具的发展趋势 .31.4 本课题研究内容 .3第 2 章 汽车焊装工艺特点 .42.1 汽车车身部件焊装工艺特点 .42.2 零部件尺寸对焊装的影响 .42.3 焊装夹具质量 .52.4 焊接变形 .52.5 操作影响 .62.6 面向焊接的车身尺寸控制方法 .72.6.1 车身基准统一系统 .72.6.2 夹具精度控制 .82.6.3 生产过程控制 .92.7 本章小结 .9第 3 章 焊装夹具设计基础 .103.1 焊装夹具的基本概念 .103.1.1 焊装夹具的基本作用 .103.1.2 焊装线发展过程及现状 .113.1.3 焊装线的分类 .113.1.4 汽车焊装生产线的几种常见形式 .123.1.5 焊装生产线的组成 .13 3.1.6 焊装线的总体布局 .