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1、SandroBaroneLeonardoBorgianniPaolaFortee-mail:p.forte@ing.unipi.itDipartimentodiIngegneriaMeccanica,NucleareedellaProduzione,UniversityofPisa,Italy,ViaDiotisalvi2,56126Pisa,ItalyEvaluationoftheEffectofMisalignmentandProfileModificationinFaceGearDrivebyaFiniteElementMeshingSimulationFacegeardr
2、iveshavemanyadvantagesoverothercrossaxistransmissionsespeciallyinhighperformanceapplications.Thelackofpublisheddesignexperienceanddesignstandardsmaketheirdesigndifficult.Thisismainlyduetothecomplexgeometriesandtothelackofpracticalexperience.Forthesereasonsfacegearshavenotbeenusedforlong.Thisw
3、orkisaimedatinvestigatingthebehaviorofafacegeartransmissionconsideringcontactpathunderload,loadsharingandstresses,foranunmodifiedgearsetincludingshaftmisalignmentandmodificationonpinionprofile.Theinvestigationiscarriedoutbyintegratinga3DCADsystemandaFEAcode,andbysimulatingthemeshingofpinionan
4、dgearsectorswiththreeteeth,usingcontactelementsandanautomatedcontactalgorithm.Theproceduresfollowedtocreatethe3Dmodelsofteethinmesharedescribedandfiniteelementanalysisresultsdiscussedshowingthedifferencesbetweenunmodified,modifiedandmisalignedteeth.Resultsshowtheinfluenceofloadontheoretically
5、calculatedcontactpaths,contactareas,arcofactionandloadsharing.Thedifferenceswithrespecttotheidealcasearesometimesremarkable.Furtherdevelopmentsarediscussed.@DOI:10.1115/1.1767818#JournalofMechanicalDesignSEPTEMBER2004,Vol.126Õ935Downloaded01Jun2010to122.207.73.96.RedistributionsubjecttoASMEli
6、censeorcopyright;seehttp://www.asme.org/terms/Terms_Use.cfmIntroductionFacegeardrivesareaparticularkindofcrossaxistransmissionmadeofapinionwithinvoluteteethmeshingwithafacegear.Facegearshavehistoricallybeenusedforapplicationswithlowtorqueandlowtomoderatespeed.Lackofexperienceandpublishedresea
7、rchinhighpower,highvelocityusage,havehinderedtheirapplicationinthesefieldsforalongtime.Inthelastdecade,theaerospaceindustryhasturneditsattentiontofacegeardrives,withprivateandgovernmentsponsoredresearch@1–4#.Inlayoutsemployingtorquesplit,duet
