258摩托车平叉焊接生产的工艺设计.doc

摘 要 本文围绕258摩托车平叉焊接生产的工艺设计这一课题，针对目前摩托车生产布局不合理,生产效率低,产品一次合格率不高的问题, 调查收集目前国内外摩托车生产制造企业的现状,分析研究生产效率低,产品一次合格率不高的原因,焊接方法、填充金属、焊接工艺等因素对焊接加工的影响规律，  ABSTRACT In this article, around this study of the 258 motorcycle fork welding production process design, in view of problem of current location of production of the motorcycle fork, low productivity, a passing rate of products is not high, collection through survey the current situation of both home and abroad motorcycle fork manufacturing enterprises, analysis the reasons of the low production efficiency and the product is not a high pass rate, conducting a comprehensive exposition, to propose solutions. By analyzing the grim situation of China’s motorcycle industry, point out the importance and urgency of the motorcycle production’s technological innovation, the main contents of this article, including the structure characteristics of the motorcycle fork, the basic principles of design of welding production line, the choice of welding equipment and options and features introduced. Through the fork of welding material and analysis, expound the welding method, filling metal, welding technology and other factors on the impact of the law of welding, conducting a study for the welding robot to improve the level of such a motorcycle fork welding production, and make a set of the basic methods of the methods of quality control of fork welding production. Though practical training in motorcycle manufacturers and experimental research, design a set of 258 motorcycle fork welding technology . Key words: motorcycle fork, weld, technology, structure  目 录 摘 要 I ABSTRACT II 1 绪论 1 1.1课题背景 1 1.2国内外现状 1 1.2.1 摩托车工业的发展现状 1 1.2.2 焊接产业的现状 3 1.3 选题目的及重点研究内容 5 1.3.1 选题目的 5 1.3.2 重点研究内容 5 2 摩托车焊接生产线的设计基本原则 6 2.1 产品的工艺流程设计 6 2.1.1 设计的内容 6 2.1.2 设计的方法 6 2.2 工艺装备的设计 7 2.3 焊接车间的设计 8 3 平叉焊接生产的工艺流程设计 9 3.1 平叉简介 9 3.1.1 平叉的基本构造 9 3.1.2 平叉的分类 9 3.2 平叉的结构特点 10 3.3 平叉材质的焊接性分析 11 3.3.1 平叉材质的分析 11 3.3.2 焊接性分析 13 3.4 焊接方法的选择 14 4 平叉焊接工艺流程的确定 17 4.1