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1MechanismandMachineTheory(机械原理)Lecture12Introduction(绪论)0.1StudyObject(研究对象)1.Definition(定义)MechanismandMachineTheory(MMT)=TheoryofMachinesandMechanisms(TMM)(机械原理=机构和机器的理论)2.Object(对象)Machinery=Mechanisms+Machines(机械)(机构)(机器)33.Concepts(概念)1)Machinee.g.Internalcombustionengine(内燃机)41Cylinder(缸体)2Piston(活塞)3Coupler(连杆)4Crank(曲柄)4’Pinion(小齿轮)4”Flywheel(飞轮)5Gear(齿轮)5’Inletcam(吸汽凸轮)5”Outletcam(排汽凸轮)6Inletvalve(进汽阀)7Outletvalve(排汽阀)5Characteristics:(1)Itisacompositionoflinks.(人为构件的组合体)(2)Thereisadeterminedrelativemotionbetweenlinks.(各构件之间有确定的相对运动)(3)Itcantransformortransmitenergy.(它能进行能量的传递或转换)☆Machine:Itisasystemoflinksthatcanaccomplishdeterminedmotionandtransformenergy.6ClassificationTwokindsofmachine:◆Workingmachine:Machinetool(工作机:机床)◆Generator:Internalcombustion,electricmotor(原动机:内燃机,电动机)72)Link—Motionelement(rigidconstruction)(构件---运动单元)e.g.Crank4+4’+4”;Gear5+5’+5”Including:Driving(input)link(原动件)Driven(output)link(从动件)Frame(机架)Differentwith:Machineelement—Manufacturingelement(机械零件---制造单元)e.g.Coupler3:body,nut,bolt,…83)Mechanism●Definition:Acompositionoflinksthatcanaccomplishdeterminedmotion.Thedifferencebetweenmechanismandmachineis:Whetherittransformsortransmitsenergy.◆Mechanism:(internalpart)Construction,kinematics,dynamicsproperties(内部的结构,运动,动力特性)◆Machine:(externalpart)Transformationofenergy(与外界的能量转换)91.Construction,kinematics,dynamics(结构学,运动学,动力学)2.Analysisandsynthesis(design)(分析与综合(设计))3.Linkage,cam,gear,etc.(连杆,凸轮,齿轮机构等)0-2StudyContent(研究的内容)100-3DevelopmentofMMT(机械学发展状况)1.IFToMM(InternationalFederationforTheoryofMachinesandMechanisms)(国际机构与机器理论联合会)2.KinematicsandDynamics(Highspeed,precision,efficiency,etc.)(高速,高精度,高效率等)113.Robot(机器人)(Manipulator,Parallelmachinetool)124.MEMS(um,nm)(微机电系统)微型飞行器微卫星微型汽车135.CAD(VR)(计算机辅助设计,虚拟现实)14TherollofMMTBasiccourses(基础课)Basiccoursesforspecialty(专业基础课)Coursesforspecialty(专业课)Mathematics,Physics,Mechanics,etc.MMTMachineElementMechanicalDesign,MechanicalManufacturing,…15References1.王知行等,机械原理,北京:高等教育出版社,20002.邹慧君等,机械原理,北京:高等教育出版社,19993.郑文纬,吴克坚,机械原理(第七版),北京:高等教育出版社,19974.孙桓等,机械原理(第六版),北京:高等教育出版社,20015.申永胜等,机械原理教程,北京:清华大学出版社,19996.申永胜等,机械原理辅导与习题,北京:清华大学出版社,19997.上海交通大学机械原理教研室编,机械原理习题集,北京:高等教育出版社,198516References8.ErdmanA.G.,SandorG.N.,MechanismDesign:AnalysisandSynthesis,Prentice-HallInternationalInc,19849*.EckhandH.D.,KinematicDesignofMachinesandMechanisms,McGraw-Hill,199810*.ShigleyJ.E.andUickerJ.J.TheoryofMachinesandMechanisms,McGraw-Hill,2ndedition,199511*.NortonR.L.,DesignofMachinery–AnIntroductiontotheSynthesisandAnalysisofMechanismsandMachines,McGraw-Hill,2ndedition,2001*影印版,机械工业出版社,2002
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