数控专业外文翻译数控技术和数控装备精品.docx

数控专业外文翻译数控技术和数控装备精品.docx

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数控专业外文翻译数控技术和数控装备精品

附录4翻译资料

翻译资料（英文）

NCtechnologyandNCequipment

NCtechnologyandNCequipmentmanufacturingindustryisanimportantfoundationformodernization.Thisisthebasisofastrongdirectimpactonthecountry'seconomicdevelopmentandcomprehensivenationalstrength,andbearingonacountry'sstrategicposition.Therefore,theworld'sindustrializedcountrieshavetakensignificantstepstodeveloptheirowntechnologiesandtheirindustrializationNC.

InChina,theCNCtechnologyandequipmentdevelopmenthasalsobeenahighdegreeofattentioninrecentyearshasmadeconsiderableprogress.Particularlyintheareaofgeneralcomputernumericalcontrol,PC-basedplatformfordomesticCNCsystems,hasbeenattheforefrontoftheworld.China,however,isinNCtechnologyresearchanddevelopmentindustriesalsohavemanyproblems,particularlyintheabilityoftechnologicalinnovationandcommercializationprocess,andotheraspectsofmarketshareisevenmoreconspicuous.Inthearrivalofthenewcentury,howtoeffectivelysolvetheseproblems,China'sNCareasalongthepathofsustainabledevelopment,fromtheoverallcomprehensiveenteredtheranksoftheadvancedworld,weintheinternationalcompetitioninapivotalposition,willbeNCresearchanddevelopmentdepartmentsandmanufacturersfacingtheimportanttask.

Toaccomplishthistask,firstofall,mustbeestablishedinlinewithChina'snationalconditionsanddevelopment.Therefore,thisarticlefromtheoverallstrategicandtechnicallevelandtwolineCNCsystem,functionalcomponents,NCcompletemachine,andseveralspecificaspectsofthedevelopmentinthenewcenturymeans.

1DevelopmentwithChinesecharacteristicsandanewgenerationofPCNCsystem

NCsystemisthecoreofalltypesofCNCequipment,firstthroughthedevelopmentofscientificandtechnologicalinnovationwithChinesecharacteristics,thenewNCsystem,willbetopromotetheindustrializationprocessofNCeffectivetechnicalmeans.

Practicehasproventhatthepast10yearswearemovinginthePCNCroadiscompletelycorrect.PCmachines（includingindustrialPC）outputisbig,cheap,technologicalprogress,andquicklyimproveperformance,andhighreliability（MTBFhostPCindustryhasreached30[3]）.Therefore,asaCNCsystemwiththehardwareandsoftwareplatformcangreatlyimprovethecost-NCsystem,butalsomakefulluseofexistinggenericcomputerhardwareandsoftwareresourcesandsharingthelatestachievementsinthefieldofcomputers,suchaslargememorycapacity,high-colordisplay,multimediainformationexchange,networkingandcommunications.Inaddition,asthecommoncomputerplatformcanalsoaccessNCrapidtechnologicalprogress,whenPC-upgrading,NCsystemcanalsobecorrespondingupgradestomaintainlong-termtechnicaladvantagesinthecompetitiontobeinvincible.

Atpresent,thePCarchitectureCNCsystemcomesintwomainforms:

（1）forthefrontofthePCandNCcompositestructure;

（2）GeneralandPC-card-hierarchicalstructure.Anotheristhedevelopmentofanumberofdistributedarchitecture.DSPwillbeitsprogrammeriscomposedofdigitalservothroughthemedia,suchasfiberopticcablenetworktolinkupwiththeNCdevice,theNCformedacompletesystem.Althoughtheperformanceofthissystemisverygood,butbecauseofthehighcostsofdevelopmentandproduction,therecentdifficulttobeacceptedbydomesticusers.Webelievethattheabove-mentionedstructureisnotinlinewithChina'snationalconditionsthebestsolutiontoChina'snationalconditionsshouldbeallfull-functionCNCSoftware'sintegratedstructure,suchasthestructureofthesmallesthardware,andisconducivetolowersystemcosts,but,moreimportantly,caneffectivelyimprovethereliabilityofthesystem.

DecadesofexperienceshowthatthereliabilityofdomesticCNCsystemisgoodorbadcanthekeytodevelopment.AlthoughtheNCsystemreliabilityimpactofanumberoffactors,butthelarge-scalehardwareandthehardwaremanufacturerslowerlevelofreliabilitytendtoposethegreatestthreat.Previously,domesticCNCsysteminthedesign,thelimitforavarietyofreasons,donothavetousetoomuchtechnicalindicatorsordinaryCPU,so,forthecompletionofthecomplexfunctionNCoftenneedmoreCPUtocomponentsystems,andsometimesplussomespecialneedorcommonhardwarecircuitNCsystemtoachievereal-timehighofsomefunctions（suchassmallinterpolation,positionservocontrol,etc.）,resultinginlarge-scalesystemhardware.NCsystemforsmallquantitiesofsuchproductsinthecountryundertheconditionsoftheexistingprocess,itisdifficultfromtheperspectiveofhardwaremanufacturersensurethatthereliabilityofthesystemAsaresult,domesticproductionintheNCsystematthepoorperformanceofthedomesticfewcontrolsystemtheimageandreputationofaseriousimpactmakesmanyusersnowalsofear.

Therefore,weinthedevelopmentofthenewNCsystem,priorityshouldbegiventoselectionofnewhigh-performanceCPU（suchasthehigh-speedPentiumII,PentiumIII,etc.）asasystemandcontrolcorecomputing,andsoftwaretoachieveasfaraspossibleallthefeaturesofNC.Thiscandrasticallyreducethesizeofthesystemhardware.Also,thesoftwaredesign,powersupplydesign,thedesignandselectionofconnectors,groundingandshieldingdesignandconstruction,suchastheadoptionofstronganti-nuisancehighreliabilitydesignandmanufacturingtechnology,andtherebyimprovethereliabilityofthesystem.

Sinceanewhigh-performanceCPUcanreplacedozensofordinaryCPU（suchasthe80286,80386,etc.）,therefore,basedonthehigh-performanceCPUonthePCplatform,notonlycanfulfillthebasicfunctionsofCNCsystem（suchasinformationprocessing,knivesmeeting,interpolation,accelerationanddecelerationcontrol,etc.）andon-offcontrolfunction（PLCcontents）,butalsotobecompletedservocontrolfunctions.Thus,beforethecompletionoftheDSPdigitalservocontrolfunctions（suchaspositioncontrol,speedcontrol,transformationvectorcontrol,etc.）fromaPCcanbecompletedintheCPU,thusrealizingthecontentsofservocontrols,whichnotonlyeffectivelyreducethesizeofthehardwarepartofNC,butalsosignificantlyreducetheservocontrolofthehardwarescale.

SuchcontentsPLCandservocontroloftheentirecontentsoftheintegratedsoftwareCNCsystem,thehardwarewillreachitsminimum,theentireCNCsystem,inadditiontoaPCplatform,theonlyremainingdriverofthesportsmachineinterfaceandfeedbackpowerinterface.Thisnotonlyeffectivelyimprovethereliabilityofthesystem,eliminatingthetransmissionofinformationbottlenecks,improvesystemperformance,butcanalsosignificantlyreducesystemcost,thesystem（includingmotor）totheexistingpricewillbeabouthalftheCNCsystem.Obviously,thishighperformance,highreliability,lowcost,thenewNCsystemishighlycompetitive,isexpectedtoopenupanewsituationinChinatocontributetoNC.

Inaddition,theintegrationofPCNCsystemthereisabigadvantage,thatiseasytoachieveopenarchitecture.Thisisbecausesuchasystemisthehardwareitselfhasbeencompletelyopen,openaCNCsystemcompletelyinsoftware,aslongastheproperformulationofstandardsandprotocols,informationprocessing,pathinterpolation,accelerationanddecelerationcontrol,Switchcontroltoservocontrolcanbeachievedandopeningup,thusgreatlyfacilitateuseraccess.

2NCcomponentsadvancingspecializedproduction

NCsystemtoresolvetheproblem,howtoachieveCNCmachinetooldesignandmanufactureofmodularmachinetoolmanufacturingenterprisesinChinaistherapidresponsetomarketdemand,competitionwonanotherkey.CNCmachinetoolstoachievethedesignandmanufactureofmodular,wemustsolvetheNCmachinetoolcomponentsofspecializedproduction.Chinainthisregardfromtheactualdemandthereisstillaconsiderablegap.Therefore,inthenextfewyears,wemustvigorouslypromotetheCNCmachinetoolcomponentsandthedevelopmentofspecializedproduction.Themainpointsareasfollows:

（1）Newpermanentmagnetelectricspindle,spindleunitsontheinternationalmarkethasbecomethemostpopularCNCmachinetoolfeatures.Butalmostalloftheseproductsforasynchronousinductiontype,presencefollowingmajorproblems:

①thererotorwindings,highcurrentflow,heatrotorseriousdirectimpactonthespindleprecision;②smallandlow-speedoutputtorqueripple,bedifficulttomeetthewiderangeofcuttingrequirements;③efficiencyandlowpowerfactor,notonlymotorsizeandweightrequirementsoftheinverterandalargecapacity,energyandmorecomplex④controlsystem,thehighcost.

（2）Cheap,high-performanceservosystemis,afeedACservosystem（motor+drive）pricesaregenerallyinthemillionmorethanthepriceaxisservosystemuptoafewmillion,hasbecomealowerdomesticCNCmachinetoolsthecostofamajorobstacle.Therefore,shouldbeinlinewiththenewintegrateddomesticCNCsystemdevelopment,vigorouslydevelopthecontentsofcheap,high-performanceservosystem.Thecontentsofthehardwareonlyservomotorandpowerinterface,andmakefulluseofChina'spermanentresourceadvantages,andspecializedproductionbythemotorcancostdown,andtheintelligentuseofIPMasapowermoduleinterfacesarecheap,willbethecontentsoffeedservocontrolinthepriceofseveralthousanddollarswithin,thecontentsofspindleservocontrolinthepriceoflessthan20,000yuan,itisentirelypossible.

（3）linearACservosystemlinearACservosystemisthenextcenturyCNCmachinetoolindispensablecomponents,thepresentChina