減速器分析與設(shè)計實驗指導(dǎo)書

減速器分析與設(shè)計__________減速器分析與設(shè)計實驗過程、選材、熱處理不熟悉；對箱體結(jié)構(gòu)、鑄造(焊接)過程不熟悉；對軸承1、了解并熟悉減速器的功能、應(yīng)用及整體結(jié)構(gòu)，分析減速器中各個零件1、將減速器箱蓋與箱體間的聯(lián)接螺栓拆下，取出定位銷，打開減速器箱sbsbZ2Z1Z4Z3螺旋角：β=arccosmn(Z1+Z2)β=arccosββ圓上用彩色粉筆輕涂后，在白紙上輕輕滾壓，測出頂圓螺旋角βa,然tgβa= mnzsmn(z+2)頂圓直徑：da=cosβ h h2齒寬接觸％為B100%c采用接觸斑點作為對減速器傳動精度的檢驗項目。仔細擦凈每一個齒接觸斑痕的分布情況，并沿齒寬、齒高方向測量接觸斑痕的尺寸。按圖2繪Ba-cah'h 齒高接觸％為h'h 式中h為工作高度，其值為h=2mn輪齒前進并受到擠壓變形。齒側(cè)間隙的Cn等于變形后鉛絲厚度的兩倍。減速器分析與設(shè)計實驗報告23三、測繪高速軸（輸入軸）及其軸承(軸承畫剖面圖)的裝配圖，并標注相*四、側(cè)隙計算(選作)*五、接觸精度(選作) 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=