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外文翻译---通过立式六轴控制并应用超声振动加工锐角转角 英文版.doc

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外文翻译---通过立式六轴控制并应用超声振动加工锐角转角 英文版.doc

1MANUFACTUREOFOVERHANGINGSHARPCORNERBYMEANSOF6AXISCONTROLMACHININGWITHTHEAPPLICATIONOFULTRASONICVIBRATIONSFELICIANOHJAPITANA,KOICHIMORISHIGE,SHUGOYASUDAANDYOSHIMITAKEUCHITHESTUDYPROPOSESANEWMACHINEMETHODTOCREATANCREATEANOVERHANGINGSHARPCORNERSHARPCORNERSONOVERHANGINGSURFACESAREDIFFICULTTOMACHINEINCONVENTIONALWAYOREVENIN3TO5AIXSEDMESPECIALLYIFTHESURFACESHAVEDIFFERENTANGLESTHISISDUETOTHELIMITATIONOFTHEFEEDDIRECTIONANDTHESTRUCTUREOFTHEELECTRODEWHEREINITMUSTBESYMMETRICALWITHTHETARGETSHAPEINPRESENTRESEARCH,WETRYTOMACHINETHESHARPCORNERWITHOVERHANGINGSURFACESUSINGTHENEWMACHININGMETHODTHE6AXISCONTROLMACHININGISAPPLIEDTOSETANONROTATIONALTOOLATANARBITRARYPOSITIONWITHARBITRARYPOSITIONWITHARBITRARYATTITUDEAGAINSTTHEWORKPIECEDURINGCUTTING,THEULTRASONICVIBRATIONISAPPLIEDONTHECUTTINGEDGEOFTHETOOL,WHILETHETOOLTRAVELSALONGTHEFEEDDIRECTIONASTHECUTTINGISPERFORMED,THE6AXISX,Y,Z,A,BMOVESIMULTANEOUSLY,DEPENDINGONTHETOOLATTITUDEATACERTAINCUTTINGPOINTFORMTHEEXPERIMENTALRESULTS,ITISSHOWNTHATTHE6AXISCONTROLULTRASONICVIBRATIONCUTTINGISCAPABLEOFPRODUCINGASHARPOVERHANGINGSURFACEKEYWORDS6AXISCONTROLLEDCUTTING,CAD/CAMSYSTEM,BOREBYTETOOL,OVERHANGINGSHARPCORNER,ULTRASONICVIBRATIONCUTTINGTOOL1INTRODUCTIONTHEFLEXIBILITYOFPRODUCTSMAYBEEXTENDEDGREATLYIFTHERESTRICTIONINMANUFACTURINGPROCESSCANBEMINIMIZEDORELIMINATEDIFROTATIONALTOOLSSUCHASBALLENDMILLSORSQUAREENDMILLSAREUSEDINTHEPRODUCTIONOFAMOULDWITHANOVERHANGINGSHARPCORNEROHSC,ITSEEMSDIFFICULTTOCLEARLYOBTAINTHETARGETSHAPEWITHSHARPEDGELINESTHISISDUETOTHERESULTOFPROCESSINGWITHTHEROTATIONALTOOLS,WHICHARESYMMETRICALWITHTHEROTATIONTHEARCLIKERADIUSREMAINSAREPRODUCEDONADJOININGSURFACES,ASSHOWNINFIG1CONVENTIONALLY,MOSTOFOVERHANGINGORINCLINEDSURFACECANBEMACHINEDBYSETTINGTHEWORKPIECEATACERTAINANGLEINTHEVISE,SWIVELLINGTHEUNIVERSALVISE,ORBYSETTINGTHETOOLHEADTOACERTAINANGLEANDFEEDINGTHECUTTINGTOOLHEAD,ASSHOWNINFIG2AINTHISPROCESS,THEOVERHANGINGSURFACESANDTHESHARPEDGESATTHEBOTTOMAREPRODUCEDHOWEVER,IFTHETARGETISANOHSCCONSISTINGOFTWOOVERHANGINGSIDESURFACES,ANDTHEINCLINATIONANGLEOFSURFACEISNOTUNIFORM,THEPROCESSINGOFTHETARGETSHAPEISDIFFICULTTOACHIEVESINCETHECUTTINGDIRECTIONINTHEPROCESSISFIXEDANDLIMITEDONLYTOLINEARCUTTINGTHUS,ITNEEDSALOTOFJIGSANDFIXTURESTOHOLDAWORKPIECE,TOPOSITION2CORRECTLYWITHRESPECTTOAMACHINETOOLANDTOSUPPORTITDURINGMACHININGFIG16AXISCONTROLMACHININGUSINGROTATIONALTOOL3FIG2METHODOFPRODUCINGSHARPCORNERWITHOVERHANGINGSURFACESTHEOTHERPOSSIBLEMETHODTOPRODUCESUCHASHAPEISMULTIAXISELECTRICDISCHARGEMACHININGEDM,ASSHOWNINFIG2BHOWEVER,EVENUSINGTHISMETHOD,ITISDIFFICULTORIMPOSSIBLETOPRODUCEANOHSCWITHDIFFERENTANGLEITNEEDS6DEGREESOFFREEDOMTOFULLYEXECUTETHEMACHININGOFTHEREQUIREDSHAPEINTHEPREVIOUSRESEARCHES,ULTRASONICVIBRATIONUSVWASAPPLIEDINTURNINGOFDUCTILEMATERIALANDMILLINGOFGLASSFIBERREINFORCEDPLASTICTHECUTTINGFORCEWITHUSVISCONSIDERABLYREDUCEDHOWEVER,INTHEFORMERPROCESS,THEWORKPIECEISROTATEDORMOVESTOTOWARDSTHECUTTINGTOOL,ANDINTHELATTER,MACHININGISLIMITEDONLYTO2OR3AXISCONTROLONEINTHEOTHERFIELDOFRESEARCH,MULTIAXISCONTROLMACHINETOOLISUSEDTOCOMPLETEAMACHININGINONESETUP,WHICHLEADSTOTHEPRODUCTIONOFWORKPIECEWITHHIGHACCURACYANDQUALITYANDTOTHEREDUCTIONINMACHININGTIMEINTHISSTUDY,6AXISCONTROLCUTTINGUSINGANONROTATIONALCUTTINGTOOLWITHTHEAPPLICATIONOFULTRASONICVIBRATIONUSVISUSED,ASSHOWNINFIG2CITISAPPLIEDTOSCRUTINIZETHEVALIDITYOFTHEMETHODINTHEFABRICATIONOFOHSC,THECAXISROTATESTHENONROTATIONALTOOLSIMULTANEOUSLYTOGETHERWITHX,Y,Z,AORBAXISDURINGMACHININGTHEMOVEMENTOFTHEAXESISBASEDONTHETOOLATTITUDEANDTHECUTTINGPOINTGENERATEDBYADEVELOPEDCAMSOFTWARETHECAMPROGRAMGENERATESACOLLISIONFREETOOLPATHTOASSURETHESAFETYOFTHEPROCESSTHE6AXISCONTROLMACHINETOOLPROVIDESEASILYTHEMACHININGCAPABILITYOFOHSC,SINCE6DEGREESOFFREEDOMMAKETHEMACHININGEXECUTEFULLYTHEREQUIREDPRODUCTSHAPEALSO,WITHTHEAPPLICATIONOFUSV,ABOREBYTETOOLISUTILIZDED,CONSIDERINGITSSIZEANDSTIFFNESSDURINGMACHININGOPERATIONSINCETHECUTTINGFORCEISGREATLYREDUCED2EXPERIMENTALPROCEDURETHEEXPERIMENTSTEUPISSHOWNINFIG3,WHEREINTHEWORKPIECEISMOUNTEDONTHETABLEOFTHE6AXISCONTROLMACHININGCENTERTHEBOREBYTETOOLISMOUNTEDINTHEUSVTOOLUSINGANADAPTORTHEUSVTOOLISTURN4MOUNTEDONTHEMAINSPINDLEOFTHE6AXISCONTROLMACHININGCENTERMULTIAXISCONTROLMACHINETOOLANDBOREBYTETOOLTHE6AXISCONTROLMACHININGCENTERUSEDINTHESTUDYISSHOWNINFIG4THEMACHININGCENTERPROVIDESMULTIAXISCNCMACHINETOOLSTHE6AXISCONTROLMACHINETOOLHAS3ROTATIONALAXESA,BANDCITISCONSTRUCTEDBYADDINGTHEROTATIONALFUNCTIONCONTHEMAINSPINDLEOFA6AXISCONTROLMACHININGCENTERWHICHHAS2ROTATIONALAXES,NAMELY;A,WHICHISAROTARYTILTINGTABLEANDB,WHICHISTHEROTARYINDEXTABLETHEMINIMUMUNITFORTRANSLATIONMOVEMENTX,YANDZIS1M,ANDTHATOFROTATIONALONEA,BANDCIS036ARCSECONDINTHECASEOFCUTTINGOFOHSC,AAXISISUSEDFORDETERMINATIONOFSIDESURFACEANDTHEINCLINATIONANGLEOFSHARPCORNER,BAXISFORWORKPIECEROTATION,CAXISFORDETERMINATIONOFCUTTINGTOOLDIRECTION,XANDYAXISFORTHEDETERMINATIONOFFEEDDIRECTIONOFFEEDDIRECTIONWHILETHEDEPTHOFCUTISDETERMINEDBYZAXISFIG6SHOWSTHENONROTATIONALCUTTINGTOOLBOREBYTETOOLUSEDINTHESTUDYITISMADEOFTUNGSTENCARBIDEUSUALLYUSEDHEREIN6AXISCONTROLCUTTINGTHETOTALLENGTHANDDIAMETEROFTHETOOLARE70MMAND6MMRESPECTIVELY

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