外文翻译--基于UG的减速器三维实体模型和运动仿真 英文版.pdf

内蒙古工业大学学报JOURNALOFINNERMONGOLIA第22卷第2期POLYTECHNICUNIVERSITYVol.22No.22003ÓcI|10015167200302015304InnerMongoliaPolytechnicUniversityDepartmentofMechanicalEngineeringThe11thSinoPolishConferenceonCADinMachineryHuhhot,China,October2002ZHANGYeCollegeofMechanicalEngineering,InnerMongoliaPolytechnicUniversity,Huhhot,010062THREEDIMENSIONALENTITYMODELANDMOVEMENTEMULATIONOFREDUCERBASEDONUGPLANEAbstractThisarticleintroducestomodelingforreducerwiththreedimensionalentitybyMOSWLINGmoduleinthelatesteditionUGNXofUGsoftware,whichmainlyconcernwithmodelofthemaincomponentssuchasshaft,gear,gearshaft,mountandcoverandcompletecorrespondingassembly.Then,carryoutmovementemulationforalltheassemblywithMOTIONmodule.KeywordsUGthreedimensionalentitymodelreduceremulationUGisthreedimensionalentitymodelplanewhichintegratesCAD/CAM/CAE,andiscomputeraideddesign,analysisandmanufacturesoftwarewhichisusedwidelyintheworld.Thereareseveralproblemsshouldbepaidattentiontointhisarticleinvolutestoothprofilemodelofgearteeth,hollowingoperationofcoverwhenmodeling,locationbetweengearshaftandgearwhenassembling.1PlottinginvolutestoothprofileofgearteethInvolutestoothprofileofgearteethcanbeplottedwithexpressioninUGq3r.Ontheotherhand,thisarticleprogramforinvolutestoothprofileofgearteethwithVC6.0andsavecoordinatevalueoftoothprofilesurfaceincorrespondingdatafile,andplotinvolutestoothprofileofgearteethusingreadpointfromfileinsplinewiththedefinedpoint.Polarcoordinatesparameterequationofinvolutesisq4rrkrbcosnullknullkinvnullktgnullknullkmakerkandnullkgotoxkrkccosnullkykrkcsinnullkandspreadwithtrigonometricexpressions,cangetxkrbcqcosnullknullknullknullkcsinnullknullkrykrbcqsinnullknullknullknullkccosnullknullkrHererkisradiusofinvolutestoothprofileatKpoint,nullkisangleofinvolutesatAKsegment,rbisbaseradiusandnullkispressureangleatKpoint.Fig.1Fig.2ProgramwithVC6.0andchangenullknullkfrom0to180,cangetcorrespondingxkandyk,andsavethemincorrespondingdatafilejkx.dat.TheresultslikeFig.1.Insert¹Curve¹SplineinUGmainmenu,clickThroughPointsbuttonaftershowingdialogue,thenthesystemshowdialogueSplineThroughPointslikeFig.2.ClickPointsFromFilebuttonandselectbeforementioneddatafilejkx.dat,cangetcorrespondinginvoluteslikeFig.3.Fig.3154ÎývÐÐ2003MBecausetooththicknessandtoothspacewidthofreferencecircleisequality,theoppositecenterangleofgearteethandtoothspaceisequality,thentheoppositecenterangleofhalftooththicknessis12c360¢2z,viz90¢z,herezisnumberofteeth.XCaxisshouldberotatednullk90¢zandmaketheabovenullkexpressiongoto,corneristgnullknullk90¢z.Becauseofthepressureangleofreferencecircleofstandardgearis20¢,soXCaxisshouldberotatedtg20¢20€3.1415926/180¢3.1415926€180¢90¢z.PlotalineatXCaxis,andselectthelineascenterofmirrorandmirrorinvoluteswithExistingLineinMirrorThroughaLine.Theradiusoftheanglebetweentoothprofilesurfaceandroofisccm1sinnulli,heremismodule,nulliisnominalpressureangle,cisbottomclearancecoefficientq2r.Atlast,cangetthreedimensionalentitymodelofgearwithtripping,corneringandstretching.likeFig.4.Fig.4Atthesamemethod,cangetgearteethinvolutestoothprofileofgearshaft.2SomeproblemsshouldbepaidattentiontowhenmodelingcoverHollowcoveraftercompletingthewholemodelofcover,cangetpartialentityandcantgettheperfectfullentity.Here,weuseRegioninHollowandchangecoverintotwopartsbearingseat,protuberantlevelandboardingbodywhichisconnectwithmountisonepart,theotherisanotherpart,andhollowseparately.ThekeypointisthetwopartscannotUnitebeforehollowingandmustbeUnitedafterhollowing.Wethinkthecomplicatedbodyshouldbedisintegratedintosimplebodiesandbehollowedseparately,thenUnite.155»2ùZHANGYeThreeDimensionalEntityModelandMovementEmulationll3LocationofgearshaftandgearwhenassemblingAxiallocationbetweengearandgearshaftisnotconfirmedwhentheyareassembledonmount,sointerveningcanhappenamonggearteeth.ThereareeighttypesrestrictioninUGq1r,suchasMate,Align,Angle,Parallel,Perpendicular,Center,DistanceandTangent,buttheyallcannotsetupmatingrelationoftwogears.Therefore,itisnecessarytoplotcorrespondinglocationsurfaceduringthecourseofentitymodelofgearshaftandgears.Hereweplotcenterlineoftoothspaceofgearshaftandcenterlineofgearteethandthetwolinesshouldbekeptparalleleachotherduringthecourseofassembly,sotheinterveningamongteethcanbeavoided.WekeeptheabovetwolinesseparatelyparallelwithfringelinesofmountwithParallelrestrictionrelation,sothetwolinesmaybeparallelmore.Thereby,gearteethcannotinterveneduringthecourseofengagement.Wecompletethreedimensionalentitymodelofthemaincomponentsofreducer.Then,wemakemovementemulationforit.First,establishmovementanalysiscase,andgearshaftandbearinginsidetrackislink1,andshaft,gear,fixeddistanceloopandcorrespondingbearinginsidetrackislink2.Then,setupJointformovementunit,namelysetupRevolutebetweengearshaftandgearseparately.Atlast,setupCompoundGearofrevolute1and2.SelectKinematic/DynamicAnalysisinAnimation,andinputTimeandStep,wecanmakemovementemulationforreducer.Reference1GuangliZhang,PengZhang,XueHong,UG18BASICTUTORIALBeijingpublishingcompanyofQinghuaUniversity,2002.2RongtanFeng,ZhuyouTian.HOWTOCOMETRUEGEARPAIRTHREEDIMENSIONALMODELM.JournalofBeijingmechanicaltechnicalcollege,15booknumber420003ChunxiangDai.EMULATIONFORENGAGEMENTOFINVOLUTESGEARWITHUGSOFTWARJ.Eincorporationofmachineandelectricity2001.024XikaiHuang,WenweiZheng.MACHINEPRINCIPLENo.6publishingcompanyofhighereducation,1989¿UG¥hÎØ»L8˜„î_‡张烨ÎývЀÐý,Ϋ„}010062K1Óº¨UGÈq¥KÔñUGNX¥MOSWLINGvhÎɛػL8/˜,ö1,q“àa}a}àa/Q8aQ8M‹¥¥.KªUG¥MOTIONvÏ¥˜É›î_‡.1oMUGØ»L8˜hÎ_‡ÏmsË|TH164ÓDSM’A156ÎývÐÐ2003M