机械外文翻译--数控技术发展趋势.doc

NCtechnologydevelopmenttrends1NCsystemdevelopmentsathomeandabroadWiththerapiddevelopmentofcomputertechnology,thetraditionalbeginningofafundamentalchangemanufacturing,theindustrialdevelopedcountriesspenthugesumsofmoneyonthemodernmanufacturingtechnologyresearchanddevelopment,tocreateanewmodel.Inmodernmanufacturingsystems,CNCtechnologyisthekeytotechnology,whichcombinesmicroelectronics,computers,informationprocessing,automaticdetection,automaticcontrol,suchastheintegrationofadvanced,ahigh-precision,high-efficiency,flexibleautomation,andothercharacteristics,themanufacturingindustryFlexibleautomation,integrated,intelligentplaythepivotalrole.Atpresent,NCtechnologyisundergoingafundamentalchange,fromaspecialclosed-loopcontrolmodetogeneral-purposereal-timedynamicopenallclosed-loopcontrolmode.IntheintegratedonthebasisoftheCNCsystemsultra-thin,ultra-light；onthebasisoftheintelligent,integratedcomputers,multimedia,fuzzycontrol,neuralnetworkandothertechnicaldisciplines,NCsystemtoachievehigh-speed,high-precision,Efficientcontrol,automaticprocessingcanbeamendedtoregulatecompensationandtheparametersforanonlineintelligentfaultdiagnosisandtreatmentofthenetworkbasedontheCAD/CAMandCNCsystemsintegrationasonemachinenetwork,makesthecentralgovernmentcentralizedcontrolofthegroupcontrolprocessing.Foralongtime,ChinasCNCsystemfortraditionalclosedarchitecture,butonlyasanon-intelligentCNCmachinecontroller.Processvariablesbasedonexperienceintheformofpre-fixedparameters,processingproceduresbeforetheactualprocessingbyhandorthroughCAD/CAMandautomaticprogrammingsystemprepared.CAD/CAMandCNChavenofeedbackcontrollink,theentiremanufacturingprocessCNCisaclosedring-openingimplementingagencies.Inacomplexandchangingenvironmentundertheconditionsofprocessingtoolintheprocessofcomposition,workpiecematerial,spindlespeed,feedrate,toolpath,cuttingdepth,step,allowanceandotherprocessingparameters,notatthescenecircumstancesunderexternalinterferenceandreal-timedynamicrandomfactors,notbyrandomamendmentfeedbackcontrollinkCAD/CAMsettingsvolume,inturn,affecttheworkofCNCmachiningefficiencyandproductquality.Clearly,thetraditionalfixedCNCsystemthatcontrolledmodeandclosedarchitecture,limitingtheCNCtothedevelopmentofmoreintelligentcontrolvariables,cannolongermeettheincreasinglycomplexmanufacturingprocess,therefore,theCNCtechnologyinthepotentialforchangeinevitable.2NCtechnologydevelopmenttrends2.1Performancedevelopmentdirection(1)High-speedhigh-precisionefficientspeed,accuracyandefficiencyofmachinerymanufacturingtechnologyisthekeyperformanceindicators.Asaresultofthehigh-speedCPUchips,RISCchip,aswellasmulti-CPUcontrolsystemwithhigh-resolutiondetectoroftheabsoluteexchangedigitalservosystem,takenatthesametimeimprovethemachinedynamicandstaticcharacteristicsofeffectivemeasures,thehigh-speedhigh-precisionmachinehasbeenefficientgreatlyenhanced.(2)Flexibleincludestwoaspects:CNCsystemitselfflexibility,NCsystemismodularindesign,functionalcoverage,canbecutandstrong,andeasytomeettheneedsofdifferentusers；groupcontrolsystemflexibility,withacontrolsystempursuanttotherequirementsofdifferentproductionprocesses,materialsflowandinformationflowautomaticallydynamicallyadjustedtomaximizetheirgroupcontrolsystemperformance.(3)Processofcompositeandmulti-axistoreducetheprocesstimeforthemainpurposeofsupportingthecompositeprocessing,andaremovingtowardsmulti-axis,multi-functioncontrolofthedirectionofseriesdevelopment.NCMachineToolTechnologycompositereferstotheworkpieceinasinglemachineonafixture,throughanautomatictoolchange,rotatingspindleheadorturntable,andothermeasurestoaccomplishmultipleprocesses,multi-surfacemachiningcompound.AxisCNCtechnology,Siemens880-axiscontrolsystemforupto24axes.(4)Real-timeIntelligentearlyforthereal-timesystemisusuallyrelativelysimpleidealenvironment,anditsroleistoschedulingtasks,toensurethatthetaskbecompletedwithinaspecifiedtimelimit.Andartificialintelligenceisusedtomodeltherealizationofmankindsvariousintelligentbehaviors.Tothedevelopmentofscienceandtechnologytoday,real-timesystemsandartificialintelligencecombinedwitheachothertowardsartificialintelligenceisareal-timeresponse,amorerealisticfieldofdevelopment,andalsointhereal-timesystemwithintelligentbehavior,themorecomplexapplicationdevelopment,resultingintheIntelligentreal-timecontrolofthisnewarea.NCtechnologyinthefield,real-timeintelligentcontroloftheresearchandapplicationofdevelopmentalongseveralmainbranches:adaptivecontrol,fuzzycontrol,neuralnetworkcontrol,expertscontrol,learningcontrol,feed-forwardcontrol.Forexample,inCNCprogrammingsystemwithexpertsystems,faultdiagnosisexpertsystemparametersautomaticallysetandtoolmanagementandautomaticcompensation,suchasadaptiveconditioningsystems,inhigh-speedprocessingoftheintegratedmotioncontrolaheadoftheintroductionofbudgetprojectionsandfunctional,dynamicFeedforwardfunctionsinpressure,temperature,position,velocity,control,fuzzycontrol,thecontroloftheNCsystemperformancegreatlyimproved,soastoachieveoptimalcontrolpurposes.2.2functionaldevelopmentdirection(1)TheuserinterfaceisgraphicaluserinterfacewiththeCNCsystemofdialoguebetweentheuserinterface.Sincedifferentusersinterfacerequirementsaredifferent,thusthedevelopmentoftheworkloadofgreatuserinterface,userinterfacesoftwaredevelopedintothemostdifficultpartof.AtpresentINTERNET,virtualreality,visualizationinscientificcomputingandmultimediatechnologies,suchastheuserinterfacehasputahigherdemand.Graphicaluserinterfacegreatlyfacilitatestheuseofnon-professionalusers,itcanbecarriedoutthroughthewindowandmenuoperation,easeofprogrammingandblueprintforrapidprogramming,three-dimensionaldynamicthree-dimensionalcolorgraphics,graphics,simulation,graphics,dynamictrackingandsimulation,andthedifferentdirectionsviewandpartialdisplayratioscalingfunctioncanbeachieved.(2)Visualizationinscientificcomputingvisualizationinscientificcomputingcanbeusedforefficientdataprocessingandinterpretationofdata,sothattheexchangeofinformationisnolongerlimitedtousingthewrittenwordandlanguage,andcandirecttheuseofgraphics,image,animation,videoandotherinformation.Visualizationtechnologyandvirtualenvironmenttechnology,tofurtherbroadentheapplicationareas,suchasadrawingdesign,virtualprototypingtechnology,whichshortenproductdesigncycles,improvingproductquality,reduceproductioncostisofgreatsignificance.NCtechnologyintheareasofvisualizationtechnologycanbeusedforCAD/CAM,suchasautomaticprogrammingdesignparametersautomaticallyset,toolcompensationandtoolmanagementofdynamicdataprocessinganddisplay,aswellastheprocessingofvisualsimulation,andotherpresentations.(3)Interpolation,andavarietyofmethodsofcompensationinterpolationmethodssuchasmultiplelinearinterpolation,circularinterpolation,cylindricalinterpolation,spaceellipticalsurfaceinterpolation,threadinterpolation,polarcoordinatesinterpolation,2D+2helicalinterpolation,NANOinterpolation,interpolationNURBS(non-uniformrationalB-splineinterpolation),splineinterpolation(A,B,Ckind),suchaspolynomialinterpolation.Avarietyoffunctionssuchascompensationgapcompensationverticalcompensationquadranterrorcompensation,andmeasurementsystemspitcherrorcompensation,andspeed-relatedfeedforwardcompensationandtemperaturecompensation,withnearlysmoothandexit,aswellastheoppositepointofthecutterradiuscompensation.(4)High-performancePLCcontentscontentsperformanceCNCsystemPLCcontrolmodulecanbedirectlyusedladderdiagramorhigh-levellanguageprogramming,withintuitiveonlinedebuggingandonlinehelpfunction.ProgrammingtoolsincludethestandardusedlatheandmillingmachinePLCuserprogramanexample,usersmayPLCuserprogramstandardsonthebasisofeditorialchanges,thuseasilybuildtheirownapplications.(5)Applicationofmultimediatechnologyofmultimediatechnology-computers,audio-visualandcommunicationtechnology,andithasthecomputerintegratedvoice,text,imagesandvideoinformation.InNCtechnology,multimediatechnologycanbeappliedtoinformationprocessingintegrated,intelligent,real-timemonitoringsysteminthefieldandproductionequipmentfaultdiagnosis,monitoringofprocessparameterssuchasproductionhasasignificantvalue.2.3DevelopmentoftheArchitecture(1)IntegrationofahighlyintegratedCPU,programmableRISCchipsandlarge-scaleintegratedcircuitsFPGA,EPLD,CPLDandASICASICchipsthatcanimprovetheCNCsystemintegrationandhardwareandsoftwareoperatingspeed.ApplicationFPDflatpaneldisplaytechnologycanimprovedisplayperformance.Flat-paneldisplayswithhighscienceandtechnologycontent,lightweight,smallsize,lowpowerconsumptionandportabilityadvantagescanberealizedSupersized,acounterweighttotheemergingandCRTdisplaytechnology,displaytechnologyinthe21stcenturythemainstream.Applicationofadvancedpackagingandinterconnecttechnologies,semiconductorsandsurfacemounttechnologyintegration.Byincreasingthedensityofintegratedcircuits,reducingthelengthandnumberofinterconnectionproductstoreduceprices,improveperformance,reducecomponentsize,improvethereliabilityofthesystem.(2)EasytoimplementmodularhardwaremodularNCsystemsintegrationand