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1、重庆理工大学硕士学位论文ABSTRACTSpiralbevelandhypoidgear(shortedbevelgear)arethekeydrivingpartofautomobile,tractor,aeroandlightindustry.Thebevelgearmeshingtransmissionqualityhasanimportanteffecttothemachinesystem'soperatingperformance.Thetransmissionperformance,vib
2、ration,noisyandworkinglifearedecidedbytoothsurfacegeometricalshapeinagreatextent.Aimtocontroltoothformquality,theGearMeasuringCenter(GMC)isextensivelyusedtoinspecttoothformininternationalmanufacturingindustryofbevelgear.InGMC,thetechnologyoftoothformand
3、pitchmeasuringisquitematureatpresent,butnotofunknownparametersbevelgear.Asaresultofthetheoreticaltoothsurfaceunknown,toothformandpitchmeasuringandcalculatingofunknownparametersisquitedifficult.Toothprofileprocessingqualityisjudgedbythetoothcontactzonean
4、dthemovementstabilityintransmission,namedTCA.Itcouldreflectthetoothprofileprocessingqualityinessentialfortheoreticaltoothsurface.Asresultofprocessingerroroftoothform,heattreatmentdistortion,thecontactsituationofactualtoothsurfaceisn’treflectedandjudgedb
5、ythat.Aboutunknownparametersbevelgear,becauseoftheoreticaltoothsurfaceisn’tbuilt,toothcontactanalysisonlycouldbedoneafterbuildingactualtoothsurfacemodel.Meshingtheoryofrealtoothsurfacehasbeenresearchmassively,butit’smethodandtheoryshouldbeconsummatedinf
6、urther.Aboutsomebevelgearswhichhaveagoodcontactperformance,gearmanufacturershaveadesiretoreverseandmanufacture,wishtogaintheformingcutterandmachineadjustmentparametersoftoothsurfaceinresult.Buttheresearchonthatandattemptarefew.Therefore,itisasignificant
7、valueofacademicandengineeringtoresearchthemethodsandalgorithmsoftoothformmeasuring,measuringtoothsurfacecontactanalysisandsurfacereverseofbevelgear.Inthispaper,theprincipleofGMCandtoothformmeasuringmethodareresearchedandunderstood.Afterthat,thetoothform
8、anddeviationmeasuringandcalculatingmethodofunknownparametersbevelgearisresearchedbasedonthetype3906GMC,andthemodelofdigitizedreferencetoothsurfaceisbuilt.Measuringtoothsurfacecontactanalysisofbevelgearisresearchedbaseonfree-forme