外文资料--EXPERIMENTAL VALIDATION OF A COMPUTERIZED TOOL FOR FACE HOBBED GEAR CONTACT AND TENSILE STRESS ANALYSIS.pdf外文资料--EXPERIMENTAL VALIDATION OF A COMPUTERIZED TOOL FOR FACE HOBBED GEAR CONTACT AND TENSILE STRESS ANALYSIS.pdf

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SPITRANTRUCPROCESSESFACKNGLEASOEMPRODECADECOCUTTERSUCCESSLOTMANYSTUDIESABOUTTOOTFMONTHECMOTHEOPPROCEEDINGSOFTHEASME2007INTERNATIONALDESIGNENGINEERINGTECHNICALCONFERENCESCOMPUTERSANDINFORMATIONINENGINEERINGCONFERENCEIDETC/CIE2007SEPTEMBER47,2007,LASVEGAS,NEVADA,USA1COPYRIGHT2007BYASMEIONRALBEVELANDHYPOIDGEARDRIVESAREWIDELYAPPLIEDINTHESMISSIONOFMANYAPPLICATIONS,SUCHASHELICOPTERS,CARS,KS,ETCTHEYAREMANUFACTUREDUSINGMAINLYTWOCUTTINGEMILLINGORFACEHOBBINGMETHODASWELLOWN,FACEMILLINGPROCESS,TRADITIONALLYADOPTEDBYTHENWORKS,UTILIZESACIRCULARFACEMILLTYPECUTTERANDPLOYSANINTERMITTENTINDEXONTHECONTRARY,DURINGFHCESS,TRADITIONALLYADOPTEDBYOERLIKONANDINTHELASTSBYTHEGLEASONWORKSASWELL,THEWORKHASNTINUOUSROTATIONANDROTATESINATIMEDRELATIONSHIPWITHTHESIVECUTTERBLADEGROUPSENGAGESSUCCESSIVETOOTHSASTHEGEARISBEINGCUT1HSURFACEREPRESENTATIONANDDESIGNOFSPIRALBEVELANDHYPOIDGEARSHAVEBEENCARRIEDOUT25ONTRARY,ABOUTFHPROCESS,THATISTHECONSIDERABLYRECOMPLEX,ONLYASMALLNUMBEROFWORKSAREAVAILABLEINENLITERATURE67PINIONGEARMODULEMM494OFFSETMM0SHAFTANGLE90TEETHNUMBER1236MEANSPIRALANGLE35000HANDLHRHFACEWIDTHMM254MEANCONEDISTANCEMM8105NOMINALPRESSUREANGLE225THEMODELVALIDATIONREQUIRESTHEFOLLOWINGSTEPSSTARTINGFROMTHEINFORMATIONSTOREDINTABLE1,BYMEANSOFACOMMERCIALGEARDESIGNSOFTWARE,THEGEOMETRICPARAMETERS,THEBASICMACHINESETTINGSANDTHECUTTINGBLADEDATAWILLBEFIRSTLYCOMPUTED;AFTERTHAT,BYMEANSOFTHEPROPOSEDMODEL,EXPERIMENTALVALIDATIONOFACOMPUTCONTACTANDTENSILESTRESSANALANDREAPIAZZAANDREAPIAZZACRFITPOWERTRAINRESEARCHANDTECHNOLOSTRADATORINO5010043OABSTRACTWHILEFACEMILLEDGEARSHAVEBEENWIDELYANALYZED,ABOUTFACEHOBBEDONESONLYVERYFEWSTUDIESHAVEBEENDEVELOPEDANDPRESENTEDGOALOFTHISPAPERISTOPROPOSETHEVALIDATIONOFANACCURATETOOL,WHICHWASPRESENTEDBYTHEAUTHORSINPREVIOUSWORKS,AIMEDTOTHECOMPUTERIZEDDESIGNOFFACEHOBBEDGEARSFIRSTLY,THEMATHEMATICALMODELABLETOCOMPUTEDETAILEDGEARTOOTHSURFACEREPRESENTATIONONBOTHSPIRALANDHYPOIDGEARSWILLBEBRIEFLYRECALLED;THEN,THESOOBTAINED3DTOOTHGEOMETRYISEMPLOYEDASINPUTFORANADVANCEDCONTACTSOLVERTHAT,USINGAHYBRIDMETHODCOMBININGFINITEELEMENTTECHNIQUEWITHSEMIANALYTICALSOLUTIONS,ISABLETOEFFICIENTLYCARRYOUTBOTHCONTACTANALYSISUNDERLIGHTORHEAVYLOADSANDSTRESSTENSILECALCULATIONTHEVALIDATIONANALYSESWILLBECARRIEDONPUBLISHEDAEROSPACEFACEHOBBEDSPIRALBEVELGEARDATACOMPARINGMEASUREMENTSOFROOTANDFILLETSTRESSESGOODAGREEMENTWITHEXPERIMENTALRESULTSBOTHINTHETIMESCALEANDINMAGNITUDEWILLBEREVEALED1INTRODUCTERIZEDTOOLFORFACEHOBBEDGEARYSISMARTINOVIMERCATIGY–CENTRORICERCHEFIATRBASSANOTO,ITALYTHEAUTHORSOFTHISPAPERHAVEWORKEDEXTENSIVELYONTHATTOPICPROPOSINGAMATHEMATICALMODELAIMEDTOTHECOMPUTATIONOFTHEFACEHOBBEDGEARTOOTHSURFACES8;MOREOVERTHEYHANDLEDTHEOUTPUTOFTHISMODELINORDERTOCARRYOUTACOMPUTERIZEDDESIGNOFTHESEGEARS9GOALOFTHISPAPERISTOPROVIDETHEVALIDATIONOFTHATTOOLTOTHISEND,ACOMPARISONWITHEXPERIMENTALDATAWILLBEPROPOSED;INPARTICULARTHERESULTSCOLLECTEDBYHANDSCHUHETAL10WILLBECONSIDEREDINTHATREFERENCEANEXPERIMENTALEVALUATIONOFTHEPERFORMANCEOFANAEROSPACESPIRALBEVELFACEHOBBEDGEARDRIVE,INTHEFOLLOWINGNAMEDTEST,ISSHOWNINDETAIL,RESULTSINTERMSOFLOADEDTOOTHCONTACTANALYSIS,STRESSCALCULATIONANDVIBRATION/NOISEMEASUREMENTAREWIDELYDISCUSSEDTHEBASICCHARACTERISTICSOFTHETESTGEARDRIVEARESUMMARIZEDINTABLE1TABLE1BASICCHARACTERISTICSOFTHETESTGEARDRIVEDETC200735911THEGEOMETRYOFTHETOOTHCANBECALCULATEDANDTHEGEARDRIVEPERFORMANCEUNDERLOADCANBEEVALUATEDTHEMAINEFFORTISDEVOTEDJUSTTOVALIDATETHEMODELBYCOMPARINGTHESTRESSESEXPERIMENTALLYMEASUREDINTHEROOTANDINTHEFILLETAREAWITHTHEONENUMERICALLYCALCULATED;AQUALITATIVECOMPARISONOFTHELOADEDTOOTHCONTACTPATTERNWILLBEALSOPROVIDED2MODELDESCRIPTIONANDMETHODOFTHETABLE2TOOTHGEOMETRYDATAOFTHETESTGEARDRIVEPINIONGEARMODULEMM4941OFFSETMM0SHAFTANGLE90TEETHNUMBER1236ANALYSISTHEFIRSTSTEPINORDERTOBUILDARELIABLENUMERICALMODELISTOGETAFINEGEOMETRICALREPRESENTATIONOFGEARTOOTHSURFACESTHISISESPECIALLYTRUEWHENONEISDEALINGWITHCOMPLEXTOOTHGEOMETRYSUCHASTHEFACEHOBBINGONETOTHISAIM,ASERIESOFALGORITHMSABLETOCOMPUTETOOTHSURFACESOFFHGEARSSTARTINGFROMCUTTINGPROCESSHASBEENIMPLEMENTEDBYTHEAUTHORS8THEGEOMETRYOFREALFHHEADCUTTERGLEASONTRIACISCONSIDERED;MANYKINDSOFBLADECONFIGURATIONSTRAIGHTANDCURVEBLADES,WITHORWITHOUTTOPREMARETAKENINTOACCOUNTTHEN,ACCORDINGTOTHETHEORYOFGEARING11,FHCUTTINGPROCESSWITHANDWITHOUTGENERATIONMOTIONISSIMULATEDANDGEARTOOTHSURFACESEQUATIONSCANBECOMPUTEDTHEPROPOSEDMATHEMATICALMODELISABLETOPROVIDEANACCURATEDESCRIPTIONOFTHEWHOLETOOTH,INCLUDINGFILLETREGION;ITALSOCONSIDERSUNDERCUTTINGOCCURRENCE,WHICHISVERYCOMMONINFHGEARSDUETOUNIFORMDEPTHTOOTHTHEOBTAINEDTOOTHSURFACESAREUSEDASFUNDAMENTALINPUTFORAPOWERFULCONTACTSOLVERWHICHISBASEDONASEMIANALYTICALFINITEELEMENTFORMULATION1213THEGEARDRIVECANBESTUDYUNDERLIGHTLOADBYMONITORING,FORDRIVEANDCOASTSIDE,THECONTACTPATTERNANDTRANSMISSIONERRORIEITCANBEPERFORMEDTHECOMMONLYCALLEDTOOTHCONTACTANALYSIS–TCA14MOREOVER,WITHTHEAIMTOFINDOUTGEARDRIVEPERFORMANCEINTHEREALSERVICECONDITIONS,ASETOFTORQUEVALUESCANBEAPPLIEDANDTHEINFLUENCEOFTHELOADONCONTACTPATTERN,ONTRANSMISSIONERRORANDONLOADSHARINGCANBEACCURATELYANALYZEDLOADEDTOOTHCONTACTANALYSIS–LTCA15CONTACTPRESSUREANDSTRESSDISTRI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