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MJ-50型数控车床主传动系统设计【说明书+CAD】

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mj 50 数控车床 传动系统 设计 说明书 仿单 cad
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BEBEK,BEARINGLOADBENDINGSTRESSBEAMISRATE,PARAMETERWITHTHEMOSTIMPORTANTINFLUENCEONDESIGNOFTHECRANKSHAFTRESULTSOFBEARINGLOADSANDWEBBENDINGSTRESSESARETABULATEDMUSTOVERALLSYSTEMSONPARAMETERSOFTHECRANKSHAFTSYSTEMSTUDIESONCRANKSHAFTOFINTERNALCOMBUSTIONENGINESMAINLYFOCUSONVIBRATIONANDSTRESSANALYSES19ALTHOUGHSTRESSANALYSESOFCRANKSHAFTSAREAVAILABLEINLITERATURE,THEREAREFEWSTUDIESONTHEEFFECTOFCOUNTERWEIGHTCONFIGURATIONONMAINBEARINGLOADSANDCRANKSHAFTSTRESSESSHARPEETAL10STUDIEDBALANCINGOFTHECRANKSHAFTOFAV8ENGINEUSINGARIGIDCRANKSHAFTMODELTIONSARECARRIEDOUTATENGINESPEEDRANGEOF10002000RPMBENDINGSTRESSESATTHECENTRESOFEACHWEBAREALSOCALCULATED2ENGINESPECIFICATIONSTHESPECIFICATIONSOFINLINESIXCYLINDERDIESELENGINEAREGIVENINTABLE1THE90LENGINECRANKSHAFTHASEIGHTCOUNTERWEIGHTSATCRANKWEBS1,2,5,6,7,8,11AND123DSOLIDMODELOFTHECRANKSHAFTISOBTAINEDUSINGPRO/ENGINEERANDISSHOWNINFIG1SCHEMATICREPRESENTATIONOFTHECRANKSHAFTISGIVENINFIG2STATICCORRESPONDINGAUTHORTEL902123597534FAX902122872456ADVANCESINENGINEERINGSOFTWARE40200995104CONTENTSLISTSAVAILABLEEMAILADDRESSYASINYILMAZBOUNEDUTRYYILMAZBEINGTHEMAINPARTRESPONSIBLEFORPOWERPRODUCTIONCRANKSHAFTSYSTEMMAINLYCONSISTSOFPISTON,PISTONPIN,CONNECTINGROD,CRANKSHAFT,TORSIONALVIBRATIONTVDAMPERANDFLYWHEELCOUNTERWEIGHTSAREPLACEDONTHEOPPOSITESIDEOFEACHCRANKTOBALANCEROTATINGINERTIAFORCESINGENERAL,COUNTERWEIGHTSAREDESIGNEDFORBALANCINGRATESBETWEEN50AND100FORACCEPTABLEMAXIMUMANDAVERAGEMAINBEARINGLOADS,MASSOFCOUNTERWEIGHTSANDTHEIRPOSITIONSAREIMPORTANTMAXIMUMANDAVERAGEMAINBEARINGLOADSOFANENGINEDEPENDONCYLINDERPRESSURE,COUNTERWEIGHTMASS,ENGINESPEEDANDOTHERGEOMETRICSTUDYONEFFECTOFCOUNTERWEIGHTCONFIGURATIONONMAINBEARINGLOADSANDCRANKSHAFTSTRESSESISSTILLNEEDEDINTHISSTUDY,COUNTERWEIGHTPOSITIONSANDMASSESOFANINLINESIXCYLINDERDIESELENGINECRANKSHAFTSYSTEMARESTUDIEDMAXIMUMANDAVERAGEMAINBEARINGFORCESANDCRANKSHAFTBENDINGSTRESSESARECALCULATEDFOR12COUNTERWEIGHTCONFIGURATIONSWITHAZERODEGREECOUNTERWEIGHTANGLE,ANDFOREIGHTCOUNTERWEIGHTCONFIGURATIONSWITH30C176COUNTERWEIGHTANGLEFOR0,50AND100COUNTERWEIGHTBALANCINGRATESANALYSESARECARRIEDOUTUSINGMULTIBODYSYSTEMSIMULATIONPROGRAM,ADAMS/ENGINESIMULA1INTRODUCTIONNEWINTERNALCOMBUSTIONENGINESPOWER,GOODFUELECONOMY,SMALLENGINEHARMLESSASPOSSIBLETOTHEENVIRONMENTEACHCOMPONENTOFTHEENGINEONITSBEINVESTIGATEDINDETAILCRANKSHAFTTIONENGINESHAVEIMPORTANTINFLUENCE09659978/SEEFRONTMATTERC2112008ELSEVIERLTDALLDOI101016/JADVENGSOFT200803009C2112008ELSEVIERLTDALLRIGHTSRESERVEDHAVEHIGHENGINESIZE,ANDSHOULDBEASTHEREFORE,THEEFFECTOFPERFORMANCESHOULDOFINTERNALCOMBUSENGINEPERFORMANCEANDOPTIMIZEDCOUNTERWEIGHTSTOMINIMIZEMAINBEARINGLOADSSTANLEYANDTARAZA11OBTAINEDMAXIMUMANDAVERAGEMAINBEARINGLOADSOFFOURANDSIXCYLINDERSYMMETRICINLINEENGINESUSINGARIGIDCRANKSHAFTMODELANDESTIMATEDIDEALCOUNTERWEIGHTMASSTHATRESULTEDINACCEPTABLEMAXIMUMBEARINGLOADRIGIDCRANKSHAFTMODELSTHATAREUSEDINCOUNTERWEIGHTANALYSESDONOTCONSIDERTHEEFFECTOFCRANKSHAFTFLEXIBILITYONMAINBEARINGLOADSANDCANLEADTOCONSIDERABLEERRORSTHEREFORE,ANEXTENSIVECRANKSHAFTMODELSBALANCINGRATEBOTHCONFIGURATIONSSHOWTHESAMETRENDTHELOADFROMGASPRESSURERATHERTHANINERTIAFORCESISTHEANINVESTIGATIONOFTHEEFFECTOFCOUNTERWEIGHTLOADANDCRANKSHAFTBENDINGSTRESSYASINYILMAZ,GUNAYANLASDEPARTMENTOFMECHANICALENGINEERING,FACULTYOFENGINEERING,BOGAZICIUNIVERSITY,34342ARTICLEINFOARTICLEHISTORYRECEIVED11FEBRUARY2008RECEIVEDINREVISEDFORM17MARCH2008ACCEPTED24MARCH2008AVAILABLEONLINE6MAY2008KEYWORDSCOUNTERWEIGHTCONFIGURATIONABSTRACTINTHISSTUDY,EFFECTSOFCOUNTERWEIGHTSTRESSOFANINLINESIXCYLINDERADAMSINTHEANALYSIS,RIGID,RIGID,BEAMAND3DSOLIDMODELSANALYSESTWELVECOUNTERWEIGHTTERWEIGHTCONFIGURATIONSWITHINGRATES,ARECONSIDEREDITWITHINCREASINGBALANCINGADVANCESINENGINEERINGJOURNALHOMEPAGEWWWELSEVIERCOM/LORIGHTSRESERVEDCONFIGURATIONONMAINBEARINGISTANBUL,TURKEYMASSANDPOSITIONONMAINBEARINGLOADANDCRANKSHAFTBENDINGDIESELENGINEISINVESTIGATEDUSINGMULTIBODYSYSTEMSIMULATIONPROGRAM,AND3DSOLIDCRANKSHAFTMODELSAREUSEDMAINBEARINGLOADRESULTSOFARECOMPAREDANDBEAMMODELISUSEDINCOUNTERWEIGHTCONFIGURATIONCONFIGURATIONSWITHAZERODEGREECOUNTERWEIGHTANGLEANDEIGHTCOUN30C176COUNTERWEIGHTANGLE,EACHFOR0,50AND100COUNTERWEIGHTBALANCFOUNDTHATMAXIMUMMAINBEARINGLOADANDWEBBENDINGSTRESSINCREASEANDAVERAGEMAINBEARINGLOADDECREASESWITHINCREASINGBALANCINGRATEATSCIENCEDIRECTSOFTWARECATE/ADVENGSOFTUNBALANCEOFEACHCRANKTHROWWITHANDW/OCOUNTERWEIGHTSISDETERMINEDUSINGPRO/ENGINEERANDISGIVENINTABLE2THEBALANCINGSYSTEMDATAFORTHECRANKTRAINAREGIVENINTABLE33MODELINGOFCRANKSHAFTSYSTEMUSINGADAMS/ENGINE,ACRANKSHAFTCANBEMODELEDINFOURDIFFERENTWAYSRIGIDCRANKSHAFT,TORSIONALFLEXIBLECRANKSHAFT,BEAMCRANKSHAFTAND3DSOLIDCRANKSHAFTRIGIDCRANKSHAFTMODELISMAINLYUSEDTOOBTAINFREEFORCESANDTORQUES,ANDFORBALANCINGPURPOSESTORSIONALFLEXIBLECRANKSHAFTMODELISUSEDTOINVESTIGATETORSIONALVIBRATIONSWHEREEACHTHROWISMODELEDASONERIGIDPART,ANDSPRINGSAREUSEDBETWEENEACHTHROWTOREPRESENTTORSIONALSTIFFNESSBEAMCRANKSHAFTMODELISUSEDTOREPRESENTTHETORSIONALANDBENDINGSTIFFNESSOFTHECRANKSHAFTUSINGBEAMMODELBENDINGSTRESSESATTHEWEBSCANBECALCULATED12TABLE1ENGINESPECIFICATIONSUNIT90LENGINEBOREDIAMETERMM115STROKEMM144AXIALCYLIN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RECIPROCATINGFORCESARENATURALLYBALANCEDTHISCANBEEXPLAINEDBYTHEFIRSTANDSECONDORDERVECTORSTARSSHOWNINFIG4THESIXCYLINDERCRANKSHAFTGENERATESROTATINGANDFIRSTSOFTWARE4020099510497ANDSECONDORDERRECIPROCATINGCOUPLESINEACHCRANKSHAFTHALFTHATBALANCEEACHOTHERBUTWHICHRESULTININTERNALBENDINGMOMENTATHIGHSPEEDS,THETWOEQUALLYDIRECTEDCRANKTHROWS,3AND4YIELDAHIGHROTATINGLOADONCENTREMAINBEARINGTHEROTATINGINERTIAFORCEOFEACHCYLINDERISUSUALLYOFFSETATLEASTPARTIALLYBYCOUNTERWEIGHTSPLACEDONTHEOPPOSITESIDEOFEACHCRANKINGENERAL,THECOUNTERWEIGHTSAREDESIGNEDFORBALANCINGRATESBETWEEN50AND100OFTHEINTERNALCOUPLEGASFORCESINCYLINDERSAREACTINGONPISTONHEAD,CYLINDERHEADANDONSIDEWALLSOFTHECYLINDERTHESEFORCESAREEQUALTOFPJC0PD24C1PCYLJHC0PCCJHC138KJ12671,62,53,43,41,62,5FIG4FIRSTANDSECONDORDERVECTORSTARS020406080100120140160180200090180270360450540630720CRANKANGLEDEGREEPRESSUREBAR1000RPM1200RPM1350RPM1675RPM2000RPMFIG5GASPRESSUREVALUESATDIFFERENTENGINESPEEDSFORTHE90LENGINEBEARING102550751001251500120240360480600720CRANKANGLEDEGFORCEKNRIGIDBEAM3DSOLIDFIG6FORCESACTINGONMAINBEARING1FORRIGID,BEAMAND3DSOLIDCRANKSHAFTMODELSAT1000RPMENGINESPEEDBEARING202550751001251501750120240360480600720CRANKANGLEDEGFORCEKNRIGIDBEAM3DSOLIDFIG7FORCESACTINGONMAINBEARING2FORRIGID,BEAMAND3DSOLIDCRANKSHAFTMODELSAT1000RPMENGINESPEEDBEARING302550751001251500120240360480600720CRANKANGLEDEGFORCEKNRIGIDBEAM3DSOLIDFIG8FORCESACTINGONMAINBEARING3FORRIGID,BEAMAND3DSOLIDCRANKSHAFTMODELSAT1000RPMENGINESPEEDBEARING402550751001251500120240360480600720CRANKANGLEDEGFORCEKNRIGIDBEAM3DSOLIDFIG9FORCESACTINGONMAINBEARING4FORRIGID,BEAMAND3DSOLIDCRANKSHAFTMODELSAT1000RPMENGINESPEEDBEARING5125150RIGIDBAM3DSOLID98YYILMAZ,GANLAS/ADVANCESINENGINEERINGSOFTWARE4020099510402550751000120240360480600720CRANKANGLEDEGFORCEKNFIG10FORCESACTINGONMAINBEARING5FORRIGID,BEAMAND3DSOLIDCRANKSHAFTMODELSAT1000RPMENGINESPEEDWHEREDISCYLINDERDIAMETER,PCYLISTHEGASPRESSUREINTHECYLINDERANDPCCISTHEPRESSUREINTHECRANKCASETHEGASFORCESARETRANSMITTEDTOTHECRANKSHAFTTHROUGHTHEPISTONANDCONNECTINGRODCYLINDERPRESSURECURVESFORTHE90LENGINESTUDIEDUNDERFULLLOADATDIFFERENTENGINESPEEDSAREGIVENINFIG5PRESSURECURVESAREOBTAINEDUSINGAVL/BOOSTENGINECYCLECALCULATIONPROGRAMWHICHSIMULATESTHERMODYNAMICPROCESSESINTHEENGINETAKINGINTOACCOUNTONEDIMENSIONALGASDYNAMICSINTHEINTAKEANDEXHAUSTSYSTEMS165MAINBEARINGLOADSCOMPARISONOFCRANKSHAFTMODELSMAINBEARINGLOADSARECALCULATEDUSINGADAMSSRIGID,BEAMAND3DSOLIDCRANKSHAFTMODELSANDCOMPAREDINTHERIGIDMODEL,NOVIBRATIONEFFECTSARECONSIDEREDWHICHCANLEADTOCONSIDERABLEERRORSIFVIBRATIONEFFECTSHAVEAMAJORROLEONTHESYSTEMLIKEINMULTITHROWCRANKSHAFTSTOCONSIDERVIBRATIONEFFECTSBEAMCRANKSHAFTMODELISUSEDANDMAINBEARINGLOADSANDBENDINGSTRESSESATWEBSARECALCULATEDRIGIDMODELASSUMESCRANKSHAFTTOBESTATICALLYDETERMINATEANDREACTIONFORCEOFANYGIVENBEARINGDEPENDSONTHELOADEXERTEDONTHETHROWSADJACENTTOTHATBEARINGBEAMMODELASSUMESTHECRANKSHAFTTOBESTATICALLYINDETERMINATEANDTHELOADEXERTEDONATHROWAFFECTSALLBEARINGSANALYSESARECARRIEDOUTATANENGINESPEEDRANGEOF10002000RPMAMORESOPHISTICATED3DSOLIDHYBRIDMODELTHATCOMBINESFEWITHADAMSISUSEDTOCHECKTHERESULTSOBTAINEDBYBEAMMODELMAXIMUMMAINBEARINGLOADOCCURSATBEARINGNUMBERTWOATBEARING602550751001251500120240360480600720CRANKANGLEDEGFORCEKNRIGIDBEAM3DSOLIDFIG11FORCESACTINGONMAINBEARING6FORRIGID,BEAMAND3DSOLIDCRANKSHAFTMODELSAT1000RPMENGINESPEEDBEARING702550751001251500120240360480600720CRANKANGLEDEGFORCEKNRIGIDBEAM3DSOLIDFIG12FORCESACTINGONMAINBEARING7FORRIGID,BEAMAND3DSOLIDCRANKSHAFTMODELSAT1000RPMENGINESPEEDBEARING14050607080100012001400160018002000CRANKANGULARVELOCITYRPMMAXIMUMBEARINGK0K50K100FORCEKNFIG13AMAXIMUMANDBAVERAGEBEARINGFORCESATBEARING2120130140150160K0K50K100MAXIMUMBEARINGFORCEKN100012001400160018002000CRANKANGULARVELOCITYRPMFIG14AMAXIMUMANDBAVERAGEBEARINGFORCESATYYILMAZ,GANLAS/ADVANCESINENGINEERINGSOFTWARE4020099510499ANENGINESPEEDOF1000RPM,THEREFORERESULTSAREPLOTTEDINFIGS612FOR1000RPMONLYRIGIDCRANKSHAFTMODELOVERESTIMATESTHEMAXIMUMMAINBEARINGLOADATBEARINGS1AND7WITHRESPECTTOBEAMANDFLEXIBLECRANKSHAFTMODELSHOWEVERITUNDERESTIMATESTHEMAXIMUMMAINBEARINGLOADATOTHERBEARINGSFOREXAMPLEATBEARING2,BEAMMODELGIVESAMAXIMUMMAINBEARINGLOADTHATIS50MORETHANTHATOFRIGIDMODELSBECAUSETHEBEAMMODELASSUMESTHECRANKSHAFTTOBESTATICALLYINDETERMINATEANDCONSIDERSBEARING1100012001400160018002000CRANKANGULARVELOCITYRPM05101520AVERAGEBEARINGK0K50K100FORCEKNBEARING1FOR12COUNTERWEIGHTCONFIGURATIONSBEARING22025303540K0K50K100100012001400160018002000AVERAGEBEARINGFORCEKNCRANKANGULARVELOCITYRPMBEARING2FOR12COUNTERWEIGHTCONFIGURATIONSBENDINGVIBRATIONSMAXIMUMMAINBEARINGLOADDIFFERENCEOFBEAMAND3DSOLIDMODELSISAPPROXIMATELY5MAINBEARINGLOADSFORBEAMAND3DSOLIDCRANKSHAFTMODELSAREGENERALLYINGOODAGREEMENTINBEARINGS3,5AND6,3DSOLIDMODELGIVESLARGERBEARINGLOADSATFIRINGPOSITIONSOFTHECYLINDERSTHATARENOTADJACENTTOBEARINGBECAUSEOBTAININGELASTIC3DSOLIDMODELSFORDIFFERENTCOUNTERWEIGHTCONFIGURATIONSISDIFFICULTANDTIMECONSUMING,ANDBEAMMODELGIVESEQUALLYVALIDRESULTS,BEAMMODELISUSEDBEARING3100110120130140K0K50K100BEARING32025303540K0K50K100MAXIMUMBEARINGFORCEKN1000120014001600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本文标题:MJ-50型数控车床主传动系统设计【说明书+CAD】
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