外文翻译--基于UG的减速器三维实体模型和运动仿真.doc
GearreducerbasedonUG3dentitymodelandmovementsimulationAbstract:thispaperintroducesthefinalversionwithUGsoftwareUGNXMOSLINGmodulegearreducerforthethree-dimensionalentitymodel,themainpartsincludingshaft,gear,gear,shaft,thelowerhousing,onhousingandassembly.FinallyintheMOTIONmoduleofUGassemblymodelfortheMOTIONsimulation.Keywords:UG;Threedimensionalentitymodeling;Gearreducer;ThesimulationChineseclassificationnumber:TH16literatureidentifier:AUGisathree-dimensionalentitymodelintheintegrationofCAD/CAM/CAEtechnologyandiswidelyusedincomputeraideddesign,analysis,manufacturingsoftware.Inthisarticle,thereareafewproblemsthatshouldbepaidattentiontois:theinvolutegeartoothprofilemodel,whenoperatinghollow-outstylecover,gearpositionbetweentheshaftandgearassembly.1drawinginvolutetoothprofileofthegearOntheotherhandgearinvolutetoothprofilegearinUG(3)the"expression"inthedrawing,theinvolutegearteethwithvc+6.0configurationfilearticlessavedcoordinateschemeandthecorrespondingdatafiletoothprofilefacevalue,anddefinesplinedrawinginvolutetoothprofilegearuse"dot"readfromthefile.InvolutepolarparameterequationisWillrkandtheexpansionofthesubstitutionandtheexpressionoftrigonometricfunctions,canbeobtained:HereisintheKpointofinvolutetoothprofileradius,AngleisinvoluteinAK,isradiusofbasecircle,isattheKpointofpressureAngle.Figure1,figure2Withvc+6.0programtochangefrom0to180K(K+),youcangetcorrespondingXkandYk,andsavethecorrespondingdatafileJKX.Dat,asshowninfigure1.InUGwithinsert->curve->simulationinthemainmenu,clickthe"by"buttonwillpopupdialogbox,andthenthesystemdisplaysasshowninfigure2areconnectedbyaspline.Clickthe"takefromthefile"buttonandselecttheaforementioneddatafileJKX.Dat,cangetthecorrespondinginvoluteasshowninfigure3.Figure3DuetotooththicknessandreferencecircletoothspacewidthisequaltothegeartoothandtoothspaceisquiterelativecentralAngle,thentheoppositehalftooththicknessiscentralAngle,thatis,zrepresentsthenumberofteeth,shouldbeXCshaftrotationandthroughtheexpressionofcalculate,AngleisduetothereferencestandardgearpressureAnglefor,shouldbeXCshaftrotation.OntheXCshaftdrawingastraightline,andthenselectthelineasthecenterlineofthemirror,"cable"online"mirror"tomirrorinvolute,thetoothprofilesurfaceandtheradiusofaddendumAngleis,masthemodulus,isthenominalpressureAngle,isthecoefficientoftoothbottom.Finally,youcangetthegearasshowninfigure4,thethree-dimensionalentitymodel.Figure4Similarly,youcangetthegearinvolutegearshaftcontour.2whenthecoverismodelingsomeproblemsdeserveattentionHollowcaptocovertheentiremodel,completedthereceivepartoftheentity,cantfullyperfectentity.Inthisarticle,weuse"hollowingout"inthe"area"andthecoveragecanbedividedintotwoparts:thebearingseat,andraisedlevelsandboardingandcanjointogetherisapartofthem;Therestisanotherpart,andthehollow.Thekeypointistojoinbeforehollowingout,andmustbeafterthehollowingout.Webelievethatthecomplexsystemshouldbebrokendownintosimple,andhollowedoutrespectively,andthenjoin.3thepositionofthegearshaftandgearassemblyBetweengearsandgearshaftaxialpositionwhenintheassemblyistodetermine,sotheinterferencemayoccurbetweentheteeth.InUG,thereareeighttypesofrestrictions,suchas:gear,alignment,Angle,parallel,perpendicular,center,distanceandtangent,buttheyarenotsurethetwogearmeshingrelationship.Therefore,itisnecessarywhentheentitymodelofgearshaftandgeardesigndrawingtherelativeposition.Wepaintintheassemblyprocessofthegearshaft