双离合自动变速器设计(全套图纸)

本科毕业设计题目：双离合自动变速器设计学院:汽车与交通工程专业:车辆工程学号:学生姓名:指导教师:日期:二〇一四年六月摘要双离合器式自动变速器(DualClutehTransmission，即DCT)，是由双轴式手动变速器发展而来的。它既保留了结构简单、传动效率高的优点，又具有电液控制方式的优点，改善了换档品质，降低了油耗、故障率和制造成本。目前国内外有许多汽车大公司与学者在致力于双离合器式自动变速器的开发与研究，并已在多款车上应用。因此研究双离合器式自动变速器的工作特性，并对其齿轮变速器进行设计，是非常重要和必须的。本文设计研究了双离合器式自动变速器的六挡齿轮变速器，对变速器的工作原理做了阐述，对各种不同变速器的布置方案及变速器的倒档方案做了详细的分析后选定了本变速器的最终布置方案，对变速器中的主要零件包括齿轮形式、换挡结构形式作了阐述并进行了选择、并且对变速器的挡位数、传动比的范围、中心距、做初步的选择和设计。对变速器中的齿轮的模数、压力角、螺旋角、进行了选择、对变速器的各挡齿轮和轴做了详细的设计计算，并进行了强度校核，对一些标准件进行了选型。变速器的传动方案设计。简单讲述了变速器中各部件材料的选择。关键字：双离合器；挡位数；传动比；齿轮；自动变速器ABSTRACTPairofdyadicclutchautomatictransmission(DualClutehTransmission,namelyDCT),istocomefrombiaxstylehandmovementchangegearbydeveloping.Nowthatithavingreservedthestructuresimplicity,efficientmeritofdrive,havehadelectricityliquidcontrolmodemerit,improvementshiftingintoquality,lesseningoilconsumes,themalfunctionleadscostofmanufacturetodraw.Andatpresent,thereisalotofimportantautomobilecompanyinhomeandabroadandthescholarisinexploitationandresearchconcentratingeffortsondyadicYuShuangclutchautomatictransmission,alreadyhaveappliedtomuchmoneyvehicle.Andautomatictransmissionperformancedatastudyingpairofclutchesaredyadictherefore,changegearcarriesoutdesignonit'sgearwheel,beveryimportantandnecessary.Thisdesigndoubleclutchtypeautomatictransmissiongeartransmission,thesixblockedfortransmissionprincipleofworkdoneonvarioustransmission,thelayoutandthetransmissionofreverseschemeafteradetailedanalysisofthetransmissionofthefinalselectionfortransmission,thelayoutofmainpartsincludinggearshiftstructureforms,expoundsthechoice,andthenumberoftransmissiongearsandscope,thetransmission,thecenterdistance,preliminarydesignandchoice.Transmissionoftransmissionschemedesign.Simplytellsthetransmissioncomponentsofmaterialselection.Keywords:Pairofclutches;NumberofGear;TransmissionRatio;Gear;AutomaticTransmission目录摘要.........................................................................................................................................................ⅠAbstract..............................................................................................................................Ⅱ第1章绪论......................................................................................................................................11.1课题研究的目的意义...............................................................................................11.2课题的研究现状.......................................................................................................31.3双离合器式自动变速器的结构及其优点...............................................................41.3.1双离合器式自动变速器的结构.............................................................................41.3.2双离合器式自动变速器的工作原理....................................................................61.4设计的主要内容与技术路线................................................................................12第2章双离合器式自动变速器方案的选择和基本尺寸的确定...................152.1方案的选择............................................................................................................132.1.1变速器的功用和要求.............................................................................................132.1.2变速器结构方案的确定..........................................................................................142.2变速器主要零件结构的方案分析........................................................................162.3本章小结..............................................................................................................................18第3章变速器主要参数的选择与主要零件的设计..............................................193.1变速器主要参数的选择...................................................................................................193.1.1挡位数...........................................................................................................193.1.2传动比范围...................................................................................................193.1.3中心距A....................................................................................................................203.1.4轴向尺寸....................................................................................................................203.1.5齿轮参数.......................................................................................................203.2变速器各挡传动比的选择....................................................................................233.2.1初选传动比...................................................................................................233.2.2最大传动比的选择.......................................................................................233.2.3其他各挡传动比的确定.........................................................................................243.3各挡齿轮齿数的分配.......................................................................................................243.3.1一档齿轮参数..........................................................................................................253.3.2确定二档齿轮参数......................................................................................263.3.3