产品结构原理课程设计(主动轴)

课程设计说明书课程名称:机械产品结构课程设计课程代码:6004019题目:微型汽车变速箱反求设计学院(直属系):机械工程与自动化学院年级/专业/班:学生姓名:学号:指导教师:陈守强开题时间:年月日完成时间:年月日课程设计说明书-1-目录摘要...............................................................................3abstract...........................................................................4引言...............................................................................5一、任务分析.......................................................................6二、微型汽车变速箱功能分析.........................................................62．1已知微型汽车变速器所配置的发动机参数........................................62．2已知微型汽车整车性能参数....................................................62．3微型汽车变速器的功能........................................................62．4观察微型汽车变速器的位置....................................................72．5传递的功率..................................................................72．6变速和保证变速的顺利进行的实现.............................................72．7各个档位的换档..............................................................72．8功能结构图..................................................................8三、完成微型汽车变速箱运动分析.....................................................83．1测量微型汽车车轮直径是多少.................................................83．2最高车速为120KM时变速箱的传动比...........................................83．3四档的传动比的分配.........................................................93．4变速箱的最大和最小载状态...................................................93．5行驶速度分别为10、20、40、60km/h时应该使用档位的分析......................9四、微型汽车变速箱的外观功能分析...................................................10五、变速箱的拆装...................................................................11六、微型汽车变速箱结构受力分析.....................................................156．1受力最大的时候各轴的扭矩...................................................156．2各轴的最小直径.............................................................166．3各个档位齿轮强度...........................................................17七、微型汽车变速箱结构原理方案反求分析.............................................187.1微型汽车变速箱整体结构及布置方案.............................................187.2微型汽车变速箱具体结构及布置方案反求.........................................187.2.1同步器工作过程与原理...................................................18课程设计说明书-2-7.2.2锁止装置...............................................................207.2.3变速器变速.............................................................207.2.4润滑...................................................................217.3主动轴的反求分析...............................................................217.3.1主动轴参数计算.........................................................237.3.2主动轴工艺分析.........................................................24八、微型汽车变速箱关键零部件反求分析.............................................258.1零件公差反求...................................................................258.2零件材料、热处理反求分析......................................................258.3变速器主要零部件的结构、功能原理的反求分析....................................25九.变速器总成装配................................................................26结论...............................................................................28致谢...............................................................................28参考文献...........................................................................29课程设计说明书-3-摘要汽车上广泛装的是往复活塞式发动机，输出的转矩和转速变化范围很小，而汽车在行驶中遇到的行驶条件又非常复杂，如需经常地起步、怠速、加速、减速、倒车、爬坡等。此时要求汽车的驱动力和车速能在相当大的范围内变化，为了解决这一矛盾，在汽车的传动系中设置了变速器。本课程就是对变速箱进行反求设计，完成变速箱变速原理分析以及其功能分析基础上。通过查阅资料以及拆装，了解到操纵换挡机构、差速器、同步器的工作位置以及原理、各档齿轮的位置、变换档位之后的自锁与互锁机构，同时编写操纵的装配工艺过程。通过观察变速箱的机构形状，分析其从提高刚度和刚性要求并思考各零件材料及热处理要求、尺寸工差，形位公差零件加工工艺、部件装配工艺以及技术要求的反求分析，在此基础上完成主动轴的三维造型。课程设计的目的在于加强学生应用所学的专用网理论、培养和训练学生解决在工程设计中根据原理方案进行的结构设计能力，在应用的基础上，创新出更先进、更完美的产品。关键词：变速器，反求设计，拆装分析，主动轴课程设计说明书-4-AbstractCariswidelyinstalledinthereciprocatingpistonengine,outputtorqueandrotationalspeedrangeissmall,andmetinthecarontheroaddrivingconditionsisverycomplicated,ifyouwanttooftenstart,idlespeed,acceleration,deceleration,reversing,climbingandsoon.Atthistimeforcardrivingforceandthespeedcanchangeinaconsiderablescale,inordertosolvethiscontradiction,setupthetransmissionintheautomobiledrivetrain.Thiscourseistoreversedesignofgearbox,completetransmissionbasedontheanalysisofvariablespeedprincipleandthefunctionanalysis.Throughthedataaccessanddismantling,Learntomanipulatetheshiftmechanism,differential,theworkingpositionofthesynchronizer,andthepositionoftheprinciple,thegear,changegearaftertheself-lockingandinterlockinginstitutions,atthesametimewritingcontrolassemblyprocess.Byobservingthegearboxbodyshape,analyzingitsthinkingfromrigiddemand,andimprovetherigidityandthepartsmaterialandheattreatmentrequirements,size,shapetolerancepartsprocessing,partsassemblyprocessandtechnicalrequirementsofreverseanalysis,onthebasisofcompletethethreedimensionalmodellingofdriveshaft.Curriculumdesignisaimedatstrengtheningstudentsapplytheoryoftheprivatenetwork,cultivatingandtrainingstudentstosolveinengineeringdesignaccordingtotheprincipleoftheschemeforthestructuredesignofability,onthebasisoftheapplication,innovationofmoreadvanced,moreperfectproductKeywords:tra