减速器分析与设计实验指导书

减速器分析与设计__________减速器分析与设计实验过程、选材、热处理不熟悉；对箱体结构、铸造(焊接)过程不熟悉；对轴承1、了解并熟悉减速器的功能、应用及整体结构，分析减速器中各个零件1、将减速器箱盖与箱体间的联接螺栓拆下，取出定位销，打开减速器箱sbsbZ2Z1Z4Z3螺旋角：β=arccosmn(Z1+Z2)β=arccosββ圆上用彩色粉笔轻涂后，在白纸上轻轻滚压，测出顶圆螺旋角βa,然tgβa= mnzsmn(z+2)顶圆直径：da=cosβ h h2齿宽接触％为B100%c采用接触斑点作为对减速器传动精度的检验项目。仔细擦净每一个齿接触斑痕的分布情况，并沿齿宽、齿高方向测量接触斑痕的尺寸。按图2绘Ba-cah'h 齿高接触％为h'h 式中h为工作高度，其值为h=2mn轮齿前进并受到挤压变形。齿侧间隙的Cn等于变形后铅丝厚度的两倍。减速器分析与设计实验报告23三、测绘高速轴（输入轴）及其轴承(轴承画剖面图)的装配图，并标注相*四、侧隙计算(选作)*五、接触精度(选作) a-c Bx100%= 100%=LearningCenterinSchoolofMechanicalEngineeringShanghaiJiaoTongUniversityThereducerisauniversalmechanicalequipment.Itsstructureincludesthetraditionaldesign(spurgear,helicalgear,bevelgear,worm,etc.),supportdesign(shaft,bearing,etc.),boxdesignandsealing.Reducerisagoodreferenceequipmentfordevelopingstudentsfulfillingindependenttasksforthefirsttime.Asmostofthestudentsarethefirsttodoindependentmechanicaldesignandarenotfamiliarwithgearstructure,processing,installationforms,theaxisofthestructure,processing,selection,heattreatment,thestructureoftheboxandtheprocessofcasting(welding),havelittleexperienceintheselectionofthebearingtype,thechoiceofthesealingform,theselectionandinstallationofthecoupling,Therefore,itisnecessarytomakethestudentstocarryoutthereducerexperimentbythemselves.Throughthereducerdisassemblyandassemblyexperiment,studentscanmakeavisualunderstandingofthevariouspartsofthereducer,andfurtherunderstandandgraspthestructureandmeaningoftheparts,processingtechnology,installationmethod,inparticular,theinstallationrequirementsofthemovingpartsandthemovingparts,theinstallationrequirementsofthemovingpartsandthefixingparts,thebearingassemblyanddisassembly,etc.,canplaytheroleofhalftheeffortthroughthedisassemblyandassemblyexperiment.Fig.1.Singlestagecylindr20.screw21.enI、ExperimentalObjective1、Getfamiliarwiththestructureofthereducer,analyzetheroleofeverypartsand.assemblyrelationship2、MeasurethemainparametersandaccuracyofreducerII、ExperimentalEquipment1、Singlestagespurgearreducer,Helicalcylindricalgearreducer2、Doublestagespurgearreducer,Helicalcylindricalgearreducer3、Bevel-Helicalgearreducer4、WormreducerandothertypesofreducermodelIII、MeasuringandAssemblingTooltypescrewdriver,etc.IV、DisassemblyStepsandExperimentalContents1、Removetheconnectingboltbetweenthetankcoverandthetankbody,removethepositioningpin,andopenthegearboxcover.2、Analyzetransmissionmode,series,input,outputshaft,anddrawthetransmissiondiagram.3、Measurementrelatedparametersandanalyzetheshapeandstructureoftankbody,itsaccessory(observationhole,oilgauge,oilplug,liftinglug,etc.),positioningmethodsandassemblyrelationsofshaftparts,lubricationandsealingmethod,etc.4、Calculaterelevantparametersofthereducersbsbtransmissionratio：i12=i34normalmodule：mn=transversemodule：mt=helicalangle：β=arccosmn(Z1+Z2)β=arccosββForthemeasurementofsmallmodulusgear’sspiralangle,wecanuserollingprocess:asshowninthefigure,aftercoatingaddendumcirclewithcoloredchalk,rollitonwhitepaper,measurethetoproundhelixangleβaandthenconvertitintohelixangleβ.referencediameter tgβa=s mnzd=cosβmn(z+2)tipdiameterda=cosβ5.Analyzethestructureofshaftcomponents,drawshaftpartsdiagramofreducerhighspeedshaftandinstallthereducertoitsoriginalstate.6.DeterminationofreducertransmissionprecisionThecontactspotisusedasthetestitemofthereducertransmissionprecision.Carefullywipeeverygear,coatredoilevenlyonthesurfaceoftheworkingtoothofdrivingwheel,useonehandtorotatetheinputshaft,andusetheotherhandtoholdtheoutputshaft,andletgearworkinasmallresistance.Afterrotation,observethedistributionofcontactdriventoothblackspot,Andmeasurecontactspotsizealongthetoothwidthandtoothheight.DrawthedistributionofcontactspotsasFig.2 a-c 10100%Toothwidecontact％is toothheightcontact％ishtoothheightcontact％isBacFigFig.2Intheformula,hisworkingheight，h=2mn7、ThedeterminationofclearanceInthemeshinggear,insertagalvanizedwirewhosediameterisslightlylargerthanthetoothsideclearance.Rotateprincipalaxis,thewirewillmoveforwardwithtoothandcauseextrusiondeformation.ThetoothsideclearanceCnisequaltotwotimesthethicknessofthedeformedwire.8、Measurementandadjustmentofaxialclearanceofbearing.Installandfixdialindicator，Pushtheshafttotheendwiththehand,andthenpushittotheotherend.Thereadingsonthedialgaugeistheaxialclearance。Increaseordecreasethesicknessofadjustingshimatthebearingendcoveuntilitmeetstherequirement.Useadjustingringoradjustingscrewforembeddedbearingcap.V、Caution1、Readexperimentalguidebookcarefullybeforeexperiment.2、Donotuseahammeroranyothertooltocombatanypartduringdisassemblyprocess.3、Duringdisassemblyprocess,studentsshouldcooperateandtakecarewitheachother,doitgentlytoavoidanyinjurytohandsandfeet.ReducerStructureAnalysisandDesignTestReportI、ReducertypeII、ExperimentalrecordsandexperimentalresultsParametersHighspeedLowspeedtipdiameterofsmallgeardα1、dα3tipdiameterofbiggeardα2、dα4wholedepthofbiggearh2tooththicknessofsmallgears1、tooththicknessofbiggears2、s4directionofsmallgearhelixdirectionofbiggearhelixtotalreductionratioinormalmodulemn1、mn3transversemodulemt1、mt3Note:theparameterhonthereducernareferencedata,andcannotbeusedforthecalculationofrelevantparameters!III、Measureanddrawthehighspeedshaftanditsbearingparts(drawcross-sectiondiagram)oftheassemblydrawing,andmarktherelevantdimensions.*IV、Lateralclearancecalculation(optional)LateralclearanceCn=