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外文翻译---孔加工技术发展动向.doc

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外文翻译---孔加工技术发展动向.doc

HoleprocessingtechnologicaldevelopmenttrendInthemachinepartsprocessingwork,theholeprocessingaccountsfortheproportionquiteinabigway,withhighspeedvistatesimilarishighspeed,thehighaccuracydrillstruncatestheprocessingtoproposetheagenda,thehighefficiencyholeprocessingregardingurgesthesparepartrationalizationofproductionistheindispensableimportanttechnologicalprocess.Inrecentyears,thesparepartproductionmostlyusedtaketheCNCenginebedasthecentralproductionshape,whencarriedontheholeprocessing,alsomostlyusedtheprocessingcenter,theCNCelectricalfinishingtoolandsoontheadvancedequipment.Regardlessofwhichdomainholeprocessing,therealizationhighaccuracyandishighspeedallisobtainstheuserorderformtheimportantcompetitionmethod.ThehighspeedholeprocessingusestheprocessingcenterMCconditionTherealizationholeprocessinghighspeedpreconditionismustusethehighspeedprocessingcenter,buttheenginebedishighspeedmustsatisfythefollowingcondition.1.ProvideshighspeedrotatesthemainaxleThedrillbitandtheendmillequallyhavethecentraltooth,becausenearbythecentraltoothhasonekindofcircumferentialvelociy,therefore,cuttingspeedtohighspeeddevelopmenttime,themainaxlerotationalspeedalsomustrealizehighspeed.Speciallywhenuseminordiameterdrillbit,themainaxleishighspeedisessential.Fromnowon,alongwiththeholeprocessinghighspeedprogress,estimatedtherotationalspeedwillreach30,000100000r/minthemainaxledemandunceasinglytoincrease.Atthesametime,becauseachievedthestipulationthehighspeedrotationneedsthetimetobeveryshortaswellastorequestZthemainaxleswingingradiustobesupposedtocontroltodrillbitdirectionofcutinthemostmilddegree,therefore,thehighspeedmainaxledispositionistherealizationhighspeedhighaccuracyholeprocessestheessentialcondition.2.MaymovepartiallyhasMovedquicklythefunctionThemainaxleandtheworktableandsoonmaymovepartiallyshouldreducetheweightasfaraspossible,realizesthemovementquicklytomelt,thisalsocarriesontheconditionwhichthehighspeedholeprocessingmusthave.1holeprocessperiodonlyneedsseveralseconds,therefore,mustreducebetweenholeandholethetooltimeoftravel,thisrealizesthehighefficiencycuttingkeyquestion,solvesthisquestionwayfirstnamelyfortobepossibletomovethepartthemovementtohavetobenimblequickly.Forexample,evenifhasachievedthehighaccuracypointingaccuracy,butliketheenginebedmaymovethepartialmovementsinsufficientlykeenquickly,alsoisimpossibletherealizationhighspeedholeprocessingrequestwhichsatisfiesthecurrentusertopropose.UsuallyistheGvaluejudgestheenginebedwiththeaccelerationcharacteristictobepossibletomovethepartialquickperformance,whenG0.81.5,mayjudgethisenginebedfortohavethehighlyquickperformancetheprocessingcenter.3.TheworktableandtheenginebedoverallareaproportionshouldbesmallerMovequicklyastheprocessingcenterusers,theyhopeworkstationsandworkstationsoutsideofthespaceoccupiedbysomeaspossible.ParticularlyKongprocessingthesecostsarehigherandlowervalueaddedprocessingarea,thebestuseofthatstructuretightprocessingcenter.IfJapanshighspeedphysicalchemicaltestingofCNCmillingmachineInstitute,thescopefor300mm2processing,machinetoolsidentitycovering950mm2,machinetoolscoveringaboutthreetimesthesizeofherbiggestchain,thewholestructurerathertight.45000r/minrotationalspeedforthemainaxismillingmachine,ahighspeedmachinescan.XYaxisorientationformobilestructureworkstationsonlyZaxismovement,itsaccelerationcharacteristicsvalueG1.5thatthequickactionofamachinetoolfunctions.4.ThemainaxlemaydirectlysupplytherefrigerantIndrillstruncatesintheprocess,processesL/DbitsKongdiameteranddeepovertohavespeciallytopayattentiontotherowoffilingsquestionin5abovehole,bestselectsthebeltfortheoilholedrillbit,inordertocarriesonthestableprocessing.Usesbythemainaxlecentersuppliesrefrigerantway,regardingreplacestheclampingapparatusthelockingboltthenismoreconvenient.5.HastheholeprocessingtoinsertwiththeCNCtoolmakesupthefunctionTheCNCcuttingcharacteristicliesinmaycarryontheinspectiontoolpaththereasonableprocessing,whencarriesontheCNCmachiningtothehole,mayusethespiralcutting,highwalkknives,tocutsandsoonthetoolinsertsmakesuptheway,hasthesefunctionstheCNCcontrolsystemtobepossibletoperformintheholeprocessingtoapply.StridesinthehighspeeddrillholetoprocessthenewtimeSincelongagoalliscarriesonthehighaccuracyholeusingthedrillbit,ThreadKongandsoonpassestheholeandtheboltholeandsoontheprocessing,recently,thiskindofprocessingalreadyrapidlydevelopedtothehighspeedcuttingdirection.Intheholeprocessingwork,atpresentstillmassivelyusedthehighspeedsteeltwistdrill,butbetweenvariousenterpriseshasgraduallypulledopenthedisparityintheholeprocessingprecisionandtheprocessingefficiencyaspect.Highspeedcuttingdrillbitmaterialbyceramiccoatinghardalloyprimarily,ifMAZAKCorporationandwoodsprecisioninstrumentmanufacturewhenprocessingcastiron,namelyhasusedtheceramiccoatingdrillbit.Whenprocessesthealuminumalloyandsoonthecoloredmaterial,mayusethediamondcoatinghardalloydrillbit,theDLCcoatinghardalloydrillbitorthebeltdiamondagglutinatesthebodyknifetoothdrillbit.Inbrief,willbeableunceasinglytoopenfromnowonsendsoutmanynewhighspeedcuttingdrillbits.Ineachkindofcoatingdrillbit,theceramiccoatinghardalloydrillbitspeciallytakestheresistancetowear,thethermalstabilityandthelubricatingability,itscoatingcraftalsoadoptsthemultilayeredspreadingway,likeusingTiAlN,TiN,TiCNandsoonthecompoundnitrideformsthecompoundcoatingstructure.Thedrillbitcuttingconditionalwaystendencyishighspeed,alongwithisprocessedthematerialthedifference,thecuttingspeedhasbeenpossiblerespectivelytoachieve200300m/minThehighspeeddrillbitcuttingisonekindhighspeedgreatlyentersforthequantitydevelopmenttendency,similarballendmillcuttingconditiondevelopmenttendency.Thecuttingpracticeindicatedthat,enhancesthecuttingspeedtobeadvantageoustoswarftheshaperationalizationandimprovementprocessingsurfaceroughness,estimatedfromnowonstillwilldevelopalongthehighspeedcuttingdirectionEnhancestobreaksfilingsrowoffilingsforthequantityandlengthensthecuttingtoollifetobeextremelyadvantageous,therefore,alsostillalonggreatlywillenterfromnowonforthedirectionunceasinglydeveloped.Atpresent,thehighspeedholeprocessingmostlyusesthemainaxlebeltforthefluidholeprocessingcenter,thiskindofequipmenthasfavorenhancesthedrillbitthecuttingspeed.Forexample,withphithe10mmcoatinghardalloydrillbitprocessestheshallowholewhentheS45Cmaterial,thecuttingspeedmayreach250m/min,entersmayreach1600mm/minforthespeedtobeequalto0.2mm/r,underthiscondition,processes1holeonlytoneedabout1second.TheHitachiprecisioninstrumentcompany,Bulasatheindustrialcorporationusesthisconditiontocarryontheshallowholeprocessing.Bulasathecompanyunderthiscondition,withthediamondcoatinghardalloydrillbitprocessestheminordiameterholewhenthealuminumalloypolematerial,1holeonlyneedsabout0.20.5secondthen

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