汽车车身焊接夹具设计

毕业设计（论文）题目学生姓名：系别：材料工程系专业：材料成型与控制工程学号：班级：T733－4指导教师：江西理工大学应用科学学院毕业论文设计摘要汽车焊装生产线及焊装夹具是汽车车身生产的关键设备，它对汽车生产制造水平起着至关重要的作用，直接影响汽车生产规模、生产效率和生产质量。随着我国汽车工业的迅速发展，激烈的市场竞争使汽车产品的更新换代越来越快，汽车车身设计越来越个性化，对汽车焊装线的需求量巨大，必须自行设计适合我国国情的汽车焊装线，努力提高设计和制造能力。本文设计了焊装夹具部件，对夹具运动机构模型简化，以前围总成工位为重点，对焊装夹具的方案设计进行了探讨和优化设计。关键词：汽车；前围；夹具；设计江西理工大学应用科学学院毕业论文设计AbstractAsthekeyequipmentfortheproductionofautomobilebodywork,theautomobileassembly-weldinglineandweldingjigareimportantfortheautomobileproductionlevel,anddirectlyaffectstheproductionpattern,productionefficiencyandproductionquality.Accompanyingtherapiddevelopmentofournationsautomobileindustry,thecompetitionofautomobilemarketbecomesdrastic,itmakestheupdatingspeedofautomobileproductmoreandmorequickly,andthedesignofautomobilebodyworkmoreindividuality,theneedingofautomobileassembly-weldinglinesbecomemoreandmorelarge.Theautomobileassembly-weldinglineswhichfitthesituationofourcountrymustbeindigenous,andthedesignandmanufactureabilitiesmustbeimproved.Inthispaper,themodelofmovementmachineofjigispredigested,theprocessdesignandoptimizationdesignbyanexampleofthefrontwallisprobedinto.Keywords:Automobile;Frontwall;Jig;Design江西理工大学应用科学学院毕业论文设计目录第一章绪论......................................................................................................................11.1课题的来源及意义..............................................................................................11.2焊装夹具国内外研究概况.................................................................................11.3夹具设计的基本理论及方法.............................................................................21.4汽车焊装夹具发展趋势......................................................................................31.5本文主要工作......................................................................................................4第二章焊接工艺分析在夹具设计中影响....................................................................52.1焊装夹具的基本概念.........................................................................................52.2焊接夹具的基本作用与要求.............................................................................52.2.1焊装夹具的基本作用...............................................................................52.2.2对焊装夹具的基本要求..........................................................................62.3焊装线发展过程及目前的现状.........................................................................62.4生产纲领对焊装夹具设计的影响......................................................................72.5投资额度及车间厂房结构和面积对车身装焊夹具设计的影响......................72.6焊点工艺分布对焊接夹具设计的影响..............................................................7第三章汽车车身零部件分析及对夹具的要求............................................................103.1汽车车身零部件的特点....................................................................................103.2微型车前围焊接夹具设计制造过程中的主要要求.......................................103.2.1前围各个零件的主要定位方式............................................................103.2.2焊接结构零件在零件装配到夹具上时所受的夹持力与料厚关系.....123.2.3装焊夹具的设计精度取决于车身产品分总成的装焊精度.................133.3夹具设计中部件的自由度限制原则................................................................133.4定位销、定位块三维可调原则........................................................................14第四章夹具的主要设计流程及参数............................................................................154.1目前焊接夹具的一般设计流程.......................................................................154.2一套完整夹具包含的内容和主要的定位方式................................................164.2.1焊装夹具组成......................................................................................164.3夹具零件目前的行业标准化建库....................................................................194.3.1基板.........................................................................................................194.3.2L板及H腿..........................................................................................194.3.3安装板工艺要求..................................................................................204.3.4定位块及压头标准................................................................................214.3.5夹紧臂....................................................................................................214.3.6垫片........................................................................................................22江西理工大学应用科学学院毕业论文设计4.3.7定位销....................................................................................................224.3.8螺钉与基准销........................................................................................23第五章夹具中的结构....................................................................................................245.1手动夹紧器——四连杆机构[10].......................................................................245.2一节旋转销结构——摆动导杆机构...............................................................245.3气动加紧机构及气缸的选取...........................................................................265.5焊接拼台的管路机构.......................................................................................275.5.1确定拼台管道类型.....................................................