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外文翻译---基于ug的发动机整体叶轮数控编程研究 英文.pdf

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外文翻译---基于ug的发动机整体叶轮数控编程研究 英文.pdf

BasedBasedBasedBasedononononugugugugengineengineengineengineoveralloveralloveralloverallimpellerimpellerimpellerimpellerNCNCNCNCProgrammingProgrammingProgrammingProgrammingResearchResearchResearchResearch1111ForewordForewordForewordForewordOverallasaturbineimpellerTurbinekeymechanicalcomponents,widelyusedinaviation,aerospaceandotherfields,itsdirectimpactonthequalityofitsaerodynamicperformanceandmechanicalefficiency.Processingtechnologysoitsturbinemanufacturingindustryhasalwaysbeenanimportantissue.Atpresent,thegeneralapplicationoftheoverallforeignimpellerfivecoordinatesprocessingdedicatedsoftware1,mainlytheUnitedStateshasNRECsMAX5,MAXABimpellerprocessingdedicatedsoftware,CNCmachinetoolsStarragSwitzerlandbroughttheoverallimpellerprocessingmodule,aswellashyperMILLtheimpellerandotherspecialprocessingsoftware.Inaddition,somegeneralpurposesoftwaresuchasUG,CATIA,PRO/E,etc.canalsobeusedfortheoverallimpellermachining.Atpresent,onlyafewdomesticenterprisessuchasNorthwesternPolytechnicalUniversityandotherinstitutesandaerospacesystemsanumberofprofessionalenginefactory,professioncanbeintegralimpellermachining,andtheleveloftheirskillsfromtheadvancedinternationalleveltherearestillabiggap.Chinasoverallimpellerprocessingandapplicationofresearchinthefieldcomparedwiththedevelopedcountriesthereisabiggap,alotofenterprisesoftwareandhardwarehavetorelyonimports,andindependentsoftwarecopyrightnopromotioninproductionapplications,inanarrowchannel,asmallwheelhubthanhighperformanceimpellerandotheraspectsofmanufacturingtechnologyhasyettocrosstheborder,sostudyoftheprocessingtechnologyofhighperformanceimpellerisimperative.2222overalloveralloveralloverallimpellerimpellerimpellerimpellerCADCADCADCAD////CAMCAMCAMCAMsystemsystemsystemsystemarchitecturearchitecturearchitecturearchitecturediagramdiagramdiagramdiagramOverallmillingimpellerprocessingmeansareusedforroughforgingpieces,andthenturningtobecomethebasicleafshapereincarnationtwistinthefiveaxisCNCmachiningcentertomakewheelswithablankleafatthecompletionofthepreviousprocessing,itcanmeetthestrengthrequirementsofCompressorImpellerProducts,surfaceerror,thequalityofdynamicbalancewhengoless,soarethepreferredprocessingmethods.FiveaxisNCmachiningofsophisticatedtechnologynecessarytomakethisoriginalhandmadeparts,canbecreatedbytheoverallprocessing.TheuseofCNCmachiningmethodsofprocessingthewholeimpellerCAD/CAMsystemstructure2asshowninFigure1.3333microcompressormicrocompressormicrocompressormicrocompressorrotorrotorrotorrotorstructuralstructuralstructuralstructuralcharacteristicscharacteristicscharacteristicscharacteristicsandandandandprocessingprocessingprocessingprocessingdifficultiesdifficultiesdifficultiesdifficultiesMostoftheoveralldomesticforeignimpellerimpellerarebasedScaledimitation,andtheimpellerofthisstudyareBUAAenergyandpowerengineeringinstituteselfdevelopedmicroaeroengineonthecompressorrotor.Exportcompressorrotordiameterof81mm,hasan8leaves,2leaves8,exportleavesahighdegreeof3mm,importsimpellerdiameter44.3mm,importsleavesahighdegreeof17.15mm,leavesthethicknessofthethinnestDepartment0.4mm,betweenadjacentbladesminimumspacingof3.1mm,Figure2.Inordertoachievetheaerodynamicdesignoftheinternationaladvancedlevel,compressorrotorusingalargetwistangle,variablefillet,suchasrootstructure,giveaveryhighprocessingrequirements.Rotorprocessingdifficultyasfollows1,theinternationalcommunityasawholethesame81mmdiameterimpellerbladesusuallyhave12or14leaves,andthisrotorhas16blades,anditstwoleavesarerelativelylong,whichhaveallowedfurthernarrowchannelprocessing,processingdifficultyfurtherincrease.2,inthecuttingtooldiameterisinthe2.5mmsituation,therigidityisbad,easytobreak,thecontroldepthofcutisalsoakey.3,thisimpellersurfaceforthefreesurface,theflowchannelisnarrow,theleafbladedistortionisserious,andafterhaving,supinetendency,whenprocessingisextremelyeasytohavetheinterference,theprocessingdifficultyishigh.Sometimestoavoidinterfering,somesurfacesmustpartitiontheprocessing,thereforetheguaranteeprocessingsurfacesuniformityalsohascertaindifficulty.4,thepredestinedaffinityfilletradiusofcurvaturechangeisverybig,intheprocessingprocesstheenginebedanglechangeisbig,andrealizestheencirclementleafbladeprocessingtobedifficult5,asaresultoftheimpellerintensitysneed,betweenthewheelhubandtheleafbladealsouseschangesthefillet.Becausethemortiseisnarrow,theleafbladeishigh,changesthefillettheprocessingisalsoadifficulty.inbrief,thisimpellersnarrowmortise,thegreattorsionangle,changedthefillethavebroughttheverymajordifficultytotheprocessing,domestichasnotseenhasprocessesthiskindofhighdifficultytheintegralwheel.4444compressorcompressorcompressorcompressorrotorsrotorsrotorsrotorsprocessingprocessingprocessingprocessingcraftcraftcraftcraftplanplanplanplanTheimpellerwholeprocessingusesthewheelhubandtheleafbladecarriesontheformcuttingonsemifinishedmaterials,butafterdoesnotusetheleafbladeprocessingforming,weldsonwheelhubstechnique.Itsprocessingcraftplanfollowing341,toenhanceintegralwheelsintensity,thesemifinishedmaterialsusetheforgingandstampinggenerally,thencarriesonthereducedplanethelathework,processestheimpellersolidofrevolutionthebasicshape.CompressorrotorssemifinishedmaterialsasshowninFigure3.2,theimpelleraircurrentchannelsslotprocessestheslottoprocesstroughspositiontoelectsuitablyintheaircurrentchannelsmiddleposition,usestheflatbasebitholdergoodmillingcuttertobeparallelintheaircurrentchannelfeeds,andguaranteedthatthetankbottomandthewheelhubsurfaceleaveleewaycertainmachiningallowance,asshowninFigure4.Andtheflatbasebitholdergoodmillingcutteristhehardalloytools,itsspecificationisTheflatbasepartialdiametersare3mm,thehemipyramidangleis2°,theshankoftooldepartmentdiameteris6mm,hastheawlpartiallengthsis20mm.thisstepselectsthespindlespeedis10000r/min,thefeedrateis800mm/min.Hasthespindlespeed,thefeedrateonnumericallycontrolledmachinetoolscontrolpaneltorepairgenerallyadjustspercentagetheswitch,mayactaccordingtotheactualprocessingsituationinthe

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