汽车发动机罩外板工艺与模具设计

中图分类号：TP311.52密级：公开UDC：621学校代码：10082硕士学位论文汽车发动机罩外板工艺与模具设计论文作者：张利雯指导教师：于新奇教授企业指导教师：刘振楼高级工程师申请学位类别：工程硕士(在职培养)学科、领域：机械工程所在单位：机械工程学院答辩日期：2013年12月HebeiUniversityofScienceandTechnologyDissertationfortheMasterDegreeMouldandProcessDesignoftheAutomobileEngineCoverPlateClassifiedIndex：TP311.52SecrecyRate：PublicizedUDC：621UniversityCode：10082Candidate:ZhangLiwenSupervisor:Prof.YuXinQiAssociateSupervisor:SeniorEngineer.LiuZhenlouAcademicDegreeApppliedfor:MasterofEngineeringSpeciality:MechanicalEngineeringEmployer:CollegeofMechanicalEngineeringDateofOralExamination:Dec,2013河北科技大学学位论文原创性声明本人郑重声明：所呈交的学位论文，是本人在导师的指导下，独立进行研究工作所取得的成果。对本文的研究做出重要贡献的个人和集体，均已在文中以明确方式标明。除文中已经注明引用的内容外，本论文不包含任何其他个人或集体已经发表或撰写过的作品或成果。本人完全意识到本声明的法律结果由本人承担。学位论文作者签名：指导教师签名：年月日年月日--------------------------------------------------------------------河北科技大学学位论文版权使用授权书本学位论文作者完全了解学校有关保留、使用学位论文的规定，同意学校保留并向国家有关部门或机构送交论文的复印件和电子版，允许论文被查阅和借阅。本人授权河北科技大学可以将本学位论文的全部或部分内容编入有关数据库进行检索，可以采用影印、缩印或扫描等复制手段保存和汇编本学位论文。□保密，在年解密后适用本授权书。本学位论文属于□不保密。（请在以上方框内打“√”）学位论文作者签名：指导教师签名：年月日年月日摘要I摘要汽车工业是国民经济的支柱产业。汽车的更新换代主要取决于车身的开发周期，而车身开发的关键在于汽车覆盖件模具的设计与制造。汽车市场的激烈竞争给汽车覆盖件模具的开发提出了高效、高质量和低成本的要求，快速开发汽车覆盖件模具，以满足汽车企业的研发生产能力已成为现在汽车企业的当务之急。本课题在遵循汽车覆盖件的生产工艺和工序设计基本原则的基础上，制定了发动机罩外板模具的冲压工艺，并且使用UG软件对各工艺环节进行设计，通过Autoform软件对成形工艺进行分析与优化，最终选用优化后的工艺方案和工艺参数；然后结合模具生产设备，设计了模具的闭合高度和送料高度，完成了发动机罩外板的拉延、翻边和修边模具的结构设计和装配图，分析了模具设计过程中，局部零件的注意事项，以及改进措施。本课题来源于国内某汽车厂家对发动机罩外板模具设计的需要，从工厂的实际要求和产品的实用性出发，利用CAD/CAM技术和CAE数值模拟分析技术完成了发动机罩外板件冲压工艺设计和模具设计，实现了从计算机仿真设计到产品生产的一体化。关键词发动机罩外板；冲压工艺；模具设计；UG软件；Autoform软件河北科技大学硕士学位论文IIAbstractAutomobileindustryisthepillarindustryofnationaleconomy.Upgradingofthecardependsmainlyonthedevelopmentcycleofcarbody,andtheautomobilecoverpartsdiedesignandmanufactureisthekeyfordevelopingthecarbody.Higherefficient,higherqualityandlowercostfortheexploitationoftheautomobilecoverpartsarerequiredbecauseofintensemarketcompetition.Rapiddevelopmentoftheautomobilecoverpartsmoldhasbecometheautomobileenterprise'stopprioritynowinordertomeettheautoenterpriseresearchandproductioncapacity.Manufacturingprocessofthehoodshellmoldwasformulatedbasedonthebasicprincipleoftheautomotivecoveringpartsproductiontechnologyandprocessdesign.TheneachcraftlinkwasdesignedbymeansoftheUGsoftware.ByusingtheAutoformsoftware,theformingprocesswasanalysedandoptimized.Accordingtothemouldproductionequipment,themouldheightandfeedheightweredetermined.Structuredesignofthehoodouterpanel,flangingandtrimmingdiewerecompleted.Themattersneedingattentionoflocalpartsintheprocessofmoulddesignwereanalyzed,andtheimprovementmeasureswereputforward.Thispapercomesfromtheneedforhoodouterpaneldiedesignofadomesticcarcompany.Underanorderoftheactualrequirementandthepracticabilityoftheproducts,stampingprocessandmolddesignoftheenginecoverplatepartshavebeencompletedbyusingtheCAD/CAMandCAEnumericalsimulationanalysistechnology.Theefficientcombinationofthecomputersimulationandproductmanufacturingisachieved.KeywordsEnginecoverplate;Stampingprocess.Moulddesign;UGsoftware;Autoformsoftware目录III目录摘要···································································································IAbstract·································································································II第1章绪论······················································································11.1引言·························································································11.2汽车覆盖件及其特点···································································11.2.1汽车覆盖件分类·································································11.2.2覆盖件的特点和要求···························································11.3汽车覆盖件模具CAD/CAE技术····················································21.3.1模具CAD/CAE技术简介·····················································21.3.2汽车覆盖件CAD/CAE国内外发展状况···································21.4本课题的选题背景及研究内容·······················································31.5本章小结··················································································4第2章发动机罩外板生产工艺设计···························································52.1工艺设计软件············································································52.1.1UG软件产品设计模块和UG二次开发····································52.1.2Autoform数值模拟分析·······················································72.2发动机罩外板生产工艺制定··························································92.3落料工艺设计···········································································102.4拉延工艺设计···········································································112.4.1冲压方向确定···································································112.4.2拉延筋的设计···································································112.4.3压边力确定······································································142.4.4变薄率和主应变分析··························································142.5修边工艺设计···········································································162.6翻边/侧翻边工艺设计·································································172.7压力机