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轿车用机械式自动变速器操控机构设计论文[带图纸].doc

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轿车用机械式自动变速器操控机构设计论文[带图纸].doc

毕业论文(设计)题目轿车用机械式自动变速器操控机构设计(英文)DesignofAutomaticMechanicalTransmissionMechanismofSedan院别机电学院专业机械设计制造及其自动化(汽车工程)姓名陈醒环学号2006090343030指导教师杨勇日期2010年6月轿车用机械式自动变速器操控机构设计摘要自动变速控制是现代汽车的一项重要技术,也是智能车辆的基本功能。电控机械式自动变速器AMT以其传动效率高、成本低和易于制造等优点,非常适合我国汽车工业的发展现实,具有很好的产业化前景和广阔的应用范围。本文是对轿车用机械自动变速器AMT的执行机构进行了设计,其中AMT的执行机构包括控制离合器的分离结合机构和选档换挡机构。由于电控电动类型的AMT变速器有结构简单紧凑,生产成本低,污染少等优点,所以本文所设计的AMT执行机构采用电机驱动。本文分别对电动离合器和电动选换档执行机构的各种方案进行讨论并作最佳选择。最佳的方案确定后选择执行电机,根据所要实现的功能和各个约束的尺寸设计出执行机构的结构,并对执行机构的各个关键的部位进行了强度的校核。最后计算整个换档的过程所用的时间,对比是否符合要求,并作出结论。关键词AMT,电机,离合器,选换档,执行机构DesignofAutomaticMechanicalTransmissionMechanismofSedanAbstractAutomatictransmissioncontrolisanimportanttechnologyinmoderncars,butalsothebasicfunctionsofintelligentvehicles.BecauseelectronicallycontrolledmechanicalautomatictransmissionAMThastheadvantagesofhightransmissionefficiency,lowcostandeasytomanufacturing,itisverysuitableforthedevelopmentofChinasautomobileindustry,andhasgoodprospectsforindustrializationandwiderangeofapplications.ThispaperisadesignofamechanicalautomatictransmissionAMTsimplementationagencies,,whichincludecombinationseparationofinstitutionsandselectedfileshiftingorganizationsofclutchcontrol.AsthetypesofAMTofElectricPowerTransmissionhassimpleandcompactstructure,lowproductioncost,lesspollution,etc,sothedesignofAMTimplementationagenciesusemotordriveorganizations.Thispaperdiscussvariousoptionsoftheelectricclutchandelectricelectionshiftimplementationagenciesandmakethebestchoice.Whenthebestoptionistobedetermined,weshouldselecttheimplementationofmotor,andthendesignthestructureofimplementationagenciesonthebaseofthefunctiontobeachievedandthevariousconstraintsofsize,andcheckthekeypartsofthevariousagenciesofimplementationagencies.Finallycaculatingthetimethattheprocessoftheshiftspend,andseeitfitstherequirementsornot,andmakeaconclusion.KeywordsAMT,motor,clutch,gearselection,implementationagencies目录第1章绪论....................................................................................................................11.1课题研究背景....................................................................................................11.2自动变速器的分类............................................................................................21.3AMT变速器发展历程及现状...........................................................................31.3.1AMT技术在国外的发展历史.................................................................41.3.2AMT的发展现状.....................................................................................41.3.3AMT的发展趋势.....................................................................................51.4本文的主要工作................................................................................................61.5本章小结............................................................................................................7第2章AMT的关键控制技术......................................................................................92.1AMT的原理、结构与分类...............................................................................92.1.1AMT的原理.............................................................................................92.1.2AMT的结构...........................................................................................102.1.3AMT的分类...........................................................................................102.2AMT系统功能和关键技术..............................................................................112.2.1AMT的系统功能....................................................................................112.2.2AMT的关键技术...................................................................................142.3本章小结..........................................................................................................17第3章电动离合器操控机构的设计..........................................................................183.1电动离合器执行机构的方案选择..................................................................183.2电机的选型......................................................................................................193.3电动离合器操控机构各零件的设计..............................................................193.3.1螺杆的设计............................................................................................193.3.2螺杆的结构设计....................................................................................253.3.3螺杆轴承的计算....................................................................................263.3.4螺母的结构设计....................................................................................273.3.5助力弹簧的设计....................................................................................283.3.6拉杆的设计............................................................................................313.3.7转臂的设计............................................................................................323.4计算离合器分离时间......................................................................................343.5本章小结..........................................................................................................34第4章选档换档机构的设计......................................................................................354.1选档换档方案的选择......................................................................................354.2选档机构的设计..............................................................................................354.2.1选档电机的选用....................................................................................364.2.2选档齿轮的设计....................................................................................364.2.3选档齿条的设计....................................................................................394.3换档机构的设计..............................................................................................404.3.1换档电机的选用....................................................................................414.3.2换档轴的设计........................................................................................424.3.3换档块的设计........................................................................................454.3.4联轴器的设计........................................................................................474.4选换档所用时间的计算..................................................................................494.5AMT变速器整个换档的时间计算.................................................................494.6本章小结..........................................................................................................50第5章全文总结..........................................................................................................515.1主要工作内容..................................................................................................515.2研究展望..........................................................................................................51参考文献........................................................................................................................53致谢................................................................................................................................55附录...................................................................................................错误未定义书签。

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