第一章机械设计绪论

Chapter1Introduction(绪论)§1—1Fundamentalpartsinmachinery(机械基本组成)Mechanicalprinciple(机械原理)Link(构件)→TheBasicElementinKinematicsAnalysis(运动的单元)MachineDesign(机械设计)MachineElement(零件)→TheBasicElementIofManufacture(制造装配的单元)

Example:DriveGearMechanicsm(传动齿轮机构)Shsft(轴),Bearing(轴承),Sleeve(套筒):

ShaftsandAssociateParts(轴系零件)

Gear(齿轮):

anElementforMachineTransmission(传动件)

CommonMachineElement

最基本的通用零件Bolt(螺栓),Key(键)

:

MechanicalJoints(联接件)Transmissionpart(传动零件)Shafting(轴系零件)Joints(联接零件)FrameandAttachment(机架及附件)CommonPart(通用零件)——Amachineelementthatisoftenusedforanordinarymachine(各类机器常能用到的零件)SpecialPart(专用零件)——Amachineelementcanonlybeusedforaspecificmachine(特定类型机器才能用到的零件)MachineElement(机械零件)Canyougivesomeexamplesofthecommonpartsandthespecialparts?One:ResearchObject

Two:Task

Learning:Application:DesignofVariouskindsofCommonParts(各类通用零件（部件）,e.g.,BoltJoints,V-Belts,RollerChains,Gears,ShaftsandBearing,etc(如螺栓、V带、链、齿轮、轴和轴承等)Designprinciple,methodandregularity(设计原理、方法和机械设计的一般规律)Standard,ManualandDrawingbook(标准，规范、手册)、图册§1—2ResearchObjectandTask(本课程研究对象和任务)Three:CurriculumCharacteristicandLearningMethod(课程特点与学习方法)Characteristic：ManyRelation:Theoreticalmechanics,MaterialMechanics,MechanicalEng.Drawing,etc.ManyDesignmethods:DifferentmachineelementhasdifferentdesignmethodManyDemands:Strength,Stiffness,Lifte,Processing,Weight,EconomicperformanceManyFormulas:analytical,empiricalManyDrawingsandTables:Structural,analytical,principle,standard,empiricalThree:CurriculumCharacteristicandLearningMethod(课程特点与学习方法)LearningMethod：DesignandSelection:aretwomainwaystodesignmachineelementsMathematicalcalculationandStructuraldesign:ThestructuraldesignaremoreimportantPerformanceandCost:areapairofcontradictionEmpiricaldesignandModerndesign:arebothimportantDesignmethodandDesigncapacity:Theformerisformal,andthelatterispurposeMe按th此od搬f锁or愤d榴es僻ig秧n骨of岁m研ac利hi哥ne驰e熊le邻me横nt姻:∵（Jo摆b）De允si昌gn→∴（Ca嚼tc迅h）De旧si心gn扛c抖ri某te袖ri谋on计算关准则*Me碰ch红in杀ca已l黎an施al乘ys娇isLo订ad外a炸nd吴S塔tr边es户s五an扩al光ys乖is←Ap委pl苗ic等at写io疾n搂a尽nd泡P贺ri剃nc真il根e*Fa汤il姑ur庄e惩ty携peMa滋infa逼il哪ur仇e鸟ty壳pe←cl水as袍si暴fi成ca泛ti茅on）红↓*De宝si睡gn老c逆ri誉te程ri催onFu滨nd酒at乳io找n放fo肌r冷de省si德gn员e戏qu腔at卡io赴n↓Ca肺lc往ul林at便io继nDe赴si导ng幅m块et忌ho配d→Ma灰te逐ri蒙al厦s,礼p昂ar品am愧et辆er幻玉s→Si菊ze涌o剖f弓ma以ch坏in帖e蚀el咬em贯en捐ts）↓St弱ru量ct暴ur絮sa茂l炎de习si裂gnSi夕ze岸s冠an啄d