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外文翻译--关于数控车床和换刀系统.doc

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外文翻译--关于数控车床和换刀系统.doc

英文原文ONTHENCLATHEANDTOOLCHANGINGSYSTEMCNCMACHINETOOLNUMERICALCONTROLMACHINETOOLSCOMPUTERNUMERICALCONTROLMACHINETOOLSABBREVIATION,ISPROVIDEDWITHAPROGRAMCONTROLSYSTEMOFAUTOMATICMACHINETOOLSTHELOGICCONTROLSYSTEMCANDEALWITHTHECONTROLCODEOROTHERSYMBOLICINSTRUCTIONSPECIFIEDPROGRAM,ANDDECODINGTHEDIGITALCODE,SAIDINFORMATIONCARRIER,THROUGHTHENUMERICALCONTROLDEVICEINPUTAFTERPROCESSINGBYCNCDEVICECONTROLSIGNALS,CONTROLTHEMACHINEMOVEMENTS,BYDRAWINGTHESHAPEANDSIZEREQUIREMENTS,WILLBEAUTOMATICALLYPROCESSEDBYTHEPARTSFEATURESCNCMACHINETOOLOPERATIONANDMONITORINGOFALLCOMPLETEDINTHENUMERICALCONTROLUNIT,ITISTHEBRAINOFCNCMACHINETOOLSCOMPAREDWITHTHEGENERALMACHINETOOLS,CNCMACHINETOOLSHASTHEFOLLOWINGCHARACTERISTICS●THEPROCESSINGOBJECTADAPTABILITY,ADAPTTOTHECHARACTERISTICSOFMOLDPRODUCTSSUCHASASINGLEPRODUCTION,PROVIDETHEAPPROPRIATEPROCESSINGMETHODFORDIEANDMOULDMANUFACTURING;●HIGHMACHININGACCURACY,PROCESSINGWITHSTABLEQUALITY;●CANCOORDINATELINKAGE,PROCESSINGCOMPLEXSHAPEPARTS;●MACHININGPARTSCHANGE,ONLYNEEDTOCHANGETHEPROGRAM,CANSAVETHEPREPARATIONTIMEOFPRODUCTION;●THEMACHINEITSELFHIGHPRECISION,RIGIDITY,CANCHOOSETHEAMOUNTOFPROCESSINGGOOD,HIGHPRODUCTIVITYTYPICALLY3TO5TIMESTHATOFORDINARYMACHINETOOL;THEMACHINEISAHIGHDEGREEOFAUTOMATION,REDUCINGLABORINTENSITY;●CONDUCIVETOTHEPRODUCTIONMANAGEMENTMODERNIZATIONTHEUSEOFCNCMACHINETOOLSANDTHESTANDARDCODEOFDIGITALINFORMATIONPROCESSING,INFORMATIONTRANSMISSION,THEUSEOFCOMPUTERCONTROLMETHOD,HASLAIDTHEFOUNDATIONFORTHEINTEGRATIONOFCOMPUTERAIDEDDESIGN,MANUFACTURINGANDMANAGEMENT;●ONTHEOPERATORSOFHIGHERQUALITY,HIGHERDEMANDSFORTHEREPAIROFTHETECHNICALSTAFF;●HIGHRELIABILITYCOMPOSITIONCNCMACHINETOOLSINGENERALBYTHEINPUTMEDIUM,MANMACHINEINTERACTIVEEQUIPMENT,CNCEQUIPMENT,FEEDSERVODRIVESYSTEM,SPINDLESERVODRIVESYSTEM,THEAUXILIARYCONTROLDEVICE,FEEDBACKAPPARATUSANDADAPTIVECONTROLDEVICEETC4INNCMACHINING,NCMILLINGPROCESSINGISTHEMOSTCOMPLEX,NEEDTOSOLVEMOSTPROBLEMSNCPROGRAMMINGOFNCLINEINADDITIONTOCNCMILLING,CUTTING,CNCEDM,CNCLATHE,CNCGRINDING,EACHWITHITSOWNCHARACTERISTICS,SERVOSYSTEMISTHEROLEOFTHEMOTIONSIGNALISCONVERTEDINTOTHEMACHINEMOVINGPARTSFROMTHENUMERICALCONTROLDEVICEOFPULSECONCRETEHASTHEFOLLOWINGPARTSTHESTRUCTUREOFCNCMACHINETOOLSDRIVERHEISDRIVINGPARTSOFCNCMACHINETOOLS,ACTUATOR,INCLUDINGSPINDLEDRIVEUNIT,FEEDINGUNIT,SPINDLEMOTORANDFEEDMOTORHETHROUGHTHEELECTRICORELECTROHYDRAULICSERVOSYSTEMTOREALIZETHESPINDLEANDFEEDDRIVEUNDERTHECONTROLOFNUMERICALCONTROLDEVICEWHENSEVERALFEEDLINKAGE,CANCOMPLETETHEPOSITIONING,PROCESSINGLINE,PLANECURVEANDSPACECURVETHEMAINPERFORMANCE1THEMAINDIMENSIONS2THESPINDLESYSTEM3FEEDSYSTEM4TOOLSYSTEM5ELECTRICALINCLUDINGTHEMAINMOTOR,SERVOMOTORSPECIFICATIONSANDPOWERETC6COOLINGSYSTEMINCLUDINGTHECOOLINGCAPACITY,COOLINGPUMPOUTPUT7DIMENSIONSEXPRESSEDASLENGTHWIDTHHEIGHTDEVELOPMENTTRENDOFCNCLATHEHIGHSPEED,PRECISION,COMPLEX,INTELLIGENTANDGREENISTHEGENERALTRENDINTHEDEVELOPMENTOFCNCMACHINETOOLTECHNOLOGY,INRECENTYEARS,MADEGRATIFYINGACHIEVEMENTSINPRACTICALITYANDINDUSTRIALIZATIONMAINLYINTHE1MACHINETOOLCOMPOSITETECHNOLOGYTOFURTHEREXPANDWITHTHECNCMACHINETOOLTECHNOLOGY,COMPOSITEPROCESSINGTECHNOLOGYMATURES,INCLUDINGMILLINGCARCOMPOUND,CARMILLINGCOMPOUND,CARBORINGDRILLGEARCUTTINGCOMPOUND,COMPOSITEGRINDING,FORMING,COMPOSITEPROCESSING,PRECISIONANDEFFICIENCYOFMACHININGISGREATLYIMPROVEDONEMACHINEISAPROCESSINGFACTORY,ONECARD,COMPLETEPROCESSINGCONCEPTISBEINGACCEPTEDBYMOREPEOPLE,THEDEVELOPMENTOFCOMPOUNDPROCESSINGMACHINETOOLISTHETRENDOFDIVERSIFIEDINTELLIGENTTECHNOLOGY2CNCMACHINETOOLSHAVEANEWBREAKTHROUGH,INTHEPERFORMANCEOFNCSYSTEMHASBEENREFLECTEDMORESUCHASAUTOMATICALLYADJUSTTHEINTERFERENCEANTICOLLISIONFUNCTION,AFTERTHEPOWEROFWORKPIECEAUTOMATICALLYEXITSAFETYPOWEROFFPROTECTIONFUNCTION,MACHININGPARTSDETECTIONANDAUTOMATICCOMPENSATIONFUNCTIONOFLEARNING,HIGHPRECISIONMACHININGPARTSINTELLIGENTPARAMETERSELECTIONFUNCTION,PROCESSAUTOMATICELIMINATIONOFMACHINEVIBRATIONFUNCTIONSINTOTHEPRACTICALSTAGE,INTELLIGENTUPGRADETHEFUNCTIONOFMACHINEANDQUALITYTHE3ROBOTSENABLEFLEXIBLECOMBINATIONOFFLEXIBLECOMBINATIONOFHIGHEREFFICIENCYOFROBOTANDTHEHOSTAREWIDELYUSED,MAKEFLEXIBLELINEMOREFLEXIBLE,EXTENDINGTHEFUNCTION,FLEXIBLELINESHORTENFURTHER,MOREEFFICIENTROBOTANDMACHININGCENTER,MILLINGCOMPOSITEMACHINE,GRINDER,GEARPROCESSINGMACHINETOOL,TOOLGRINDINGMACHINE,ELECTRICMACHINE,SAWINGMACHINE,PUNCHINGMACHINE,LASERCUTTINGMACHINE,WATERCUTTINGMACHINEETCVARIOUSFORMSOFFLEXIBLEUNITANDFLEXIBLEPRODUCTIONLINEHASALREADYBEGUNTHEAPPLICATION4PRECISIONMACHININGTECHNOLOGYHASTHEMACHININGPRECISIONOFCNCMETALCUTTINGMACHINETOOLSFROMTHEYARNINTHEORIGINAL001MMUPTOMICRONLEVEL0001MM,SOMEVARIETIESHASREACHEDABOUT005ΜMMICROCUTTINGANDGRINDINGMACHININGOFULTRAPRECISIONCNCMACHINETOOLS,PRECISIONCANREACHABOUT005ΜM,SHAPEPRECISIONCANREACHABOUT001ΜMSPECIALPROCESSINGPRECISIONBYUSINGOPTICAL,ELECTRICAL,CHEMICAL,ENERGYCANREACHNANOMETERLEVEL0001ΜMBYOPTIMIZINGTHEDESIGNOFMACHINETOOLSTRUCTURE,MACHINETOOLPARTSOFULTRAPRECISIONMACHININGANDPRECISIONASSEMBLY,USINGHIGHPRECISIONCLOSEDLOOPCONTROLANDTEMPERATURE,VIBRATIONANDOTHERDYNAMICERRORCOMPENSATIONTECHNOLOGY,IMPROVETHEGEOMETRICACCURACYOFMACHINETOOLPROCESSING,REDUCETHESHAPEOFERROR,SURFACEROUGHNESS,ANDINTOTHESUBMICRON,NANOSUPERFINISHINGTITHE5FUNCTIONALCOMPONENTTOIMPROVETHEPERFORMANCEOFFUNCTIONALCOMPONENTSAREATAHIGHSPEED,HIGHPRECISION,HIGHPOWERANDINTELLIGENTDIRECTION,ANDOBTAINTHEMATUREAPPLICATIONAFULLDIGITALACSERVOMOTORANDDRIVEDEVICE,HIGHTECHNOLOGYCONTENTOFTHEELECTRICSPINDLE,LINEARMOTOR,TORQUEMOTOR,LINEARMOTIONCOMPONENTSWITHHIGHPERFORMANCE,APPLICATIONOFHIGHPRECISIONSPINDLEUNITANDOTHERFUNCTIONPARTS,GREATLYIMPROVINGTHETECHNICALLEVELOFCNCMACHINETOOLSTHEFEEDDRIVESYSTEMOFCNCLATHEEFFECTOFFEEDDRIVESYSTEM,THEFEEDDRIVESYSTEMOFCNCMACHINETOOLSWILLBERECEIVEDPULSECOMMANDISSUEDBYTHENUMERICALCONTROLSYSTEM,ANDTHEAMPLIFICATIONANDCONVERSIONMACHINEMOVEMENTSCARRYTHEEXPECTEDMOVEMENTTWO,THEFEEDINGTRANSMISSIONSYSTEMREQUIREMENTSINORDERTOGUARANTEETHEMACHININGACCURACYOFNCMACHINETOOLISHIGH,THEFEEDDRIVESYSTEMOFTRANSMISSIONACCURACY,SENSITIVITYHIGHFASTRESPONSE,STABLEWORK,HIGHSTIFFNESSANDFRICTIONANDINERTIASMALL,SERVICELIFE,ANDCANREMOVETHETRANSMISSIONGAPCATEGORYTHREE,FEEDDRIVESYSTEM1,STEPPINGMOTORSERVOSYSTEMGENERALLYUSEDFORNCMACHINETOOLS2,DCSERVOMOTORSERVOSYSTEMPOWERISSTABLE,BUTBECAUSEOFTHEBRUSH,THEWEARRESULTINGINUSENEEDTOCHANGEGENERALLYUSEDFORMIDDLEGRADECNCMACHINETOOLS3,ACSERVOMOTORSERVOSYSTEMTHEAPPLICATIONISEXTREMELYWIDESPREAD,MAINLYUSEDINHIGHENDCNCMACHINETOOLS4,THELINEARMOTORSERVOSYSTEMNOINTERMEDIATETRANSMISSIONCHAIN,HIGHPRECISION,THEFEEDSPEED,NOLENGTHLIMIT;BUTTHEPOORHEATDISSIPATION,PROTECTIONREQUIREMENTSAREPARTICULARLYHIGH,MAINLYUSEDFORHIGHSPEEDMACHINEDRIVINGCOMPONENTFOUR,FEEDSYSTEM1,THEBALLSCREWNUTPAIRNCMACHINING,THEROTARYMOTIONINTOLINEARMOTION,SOTHEUSEOFSCREWNUTTRANSMISSIONMECHANISMNCMACHINETOOLSARECOMMONLYUSEDONTHEBALLSCREW,ASSHOWNINFIGURE125,ITCANBEASLIDINGFRICTIONINTOROLLINGFRICTION,MEETTHEBASICREQUIREMENTSOFTHEFEEDSYSTEMTOREDUCEFRICTIONTHETRANSMISSIONSIDEOFHIGHEFFICIENCY,SMALLFRICTION,ANDCANELIMINATETHEGAP,NOREVERSEAIRTRAVEL;BUTTHEMANUFACTURINGCOSTISHIGH,CANNOTLOCK,SIZEISNOTTOOBIG,GENERALLYUSEDFORLINEARFEEDINSMALLCNCMACHINETOOL2,ROTARYTABLEINORDERTOEXPANDTHESCOPEOFTHEPROCESSOFNCMACHINETOOLS,CNCMACHINETOOLSINADDITIONTOMAKELINEARFEEDALONGTHEX,Y,ZTHREECOORDINATEAXES,OFTENALSONEEDACIRCUMFERENTIALFEEDMOVEMENTAROUNDYORZAXISCIRCULARFEEDMOTIONOFCNCMACHINETOOLSINGENERALBYTHEROTARYTABLETOREALIZE,FORMACHININGCENTER,ROTARYTABLEHASBECOMEANINDISPENSABLEPARTOFROTARYTABLEOFCOMMONLYUSEDCNCMACHINETOOLSINTHEINDEXINGTABLEANDNCROTARYTABLE1INDEXINGTABLEINDEXINGTABLECANONLYFINISHDIVIDINGMOVEMENT,NOTCIRCULARFEED,ITISINACCORDANCEWITHTHEINSTRUCTIONSINTHENCSYSTEM,WHENINDEXINGWILLWORKTOGETHERWITHTHEWORKPIECEROTATIONANGLEWHENINDEXINGCANALSOUSEMANUALINDEXINGPROVISIONSOFINDEXINGTABLEISGENERALLYONLYROTARYANGLESUCHAS90,60AND45DEGREE2NCROTARYTABLENCROTARYTABLEAPPEARANCESIMILARTOTHEINDEXINGTABLE,BUTTHEINTERNALSTRUCTUREANDFUNCTIONISNOTTHESAMETHEMAINFUNCTIONOFTHENCROTARYTABLEISBASEDONTHENUMERICALCONTROLDEVICESENDSCOMMANDPULSESIGNAL,COMPLETECIRCUMFERENTIALFEEDMOVEMENT,VARIOUSARCPROCESSINGANDSURFACEPROCESSING,ITCANALSOBEGRADUATIONWORK3,GUIDERAILISANIMPORTANTPARTOFFEEDDRIVESYSTEM,ISONEOFTHEBASICELEMENTSOFTHESTRUCTUREOFMACHINETOOL,RIGIDITY,PRECISIONANDACCURACYOFNCMACHINETOOLWHICHDETERMINESTOALARGEEXTENTRETENTIONATPRESENT,GUIDETHENCMACHINETOOLARESLIDINGRAIL,ROLLINGGUIDEWAYANDHYDROSTATICGUIDEWAY1SLIDINGGUIDESLIDINGGUIDERAILHASTHEADVANTAGESOFSIMPLESTRUCTURE,EASYMANUFACTURE,GOODSTIFFNESS,VIBRATIONRESISTANCEANDHIGHPERFORMANCE,WIDELYUSEDINCNCMACHINETOOLS,THEUSEOFMOSTMETALPLASTICFORM,KNOWNASTHEPLASTICGUIDERAIL,ASSHOWNINFIGURE126ONCHARACTERISTICSOFTHEPLASTICSLIDINGGUIDEFRICTIONCHARACTERISTICISGOOD,GOODWEARRESISTANCE,STABLEMOVEMENT,GOODMANUFACTURABILITY,LOWSPEED2ROLLINGGUIDEROLLINGGUIDEISPLACEDINTHERAILSURFACEBETWEENTHEBALL,ROLLERORNEEDLEROLLER,ROLLER,THEROLLINGFRICTIONINSTEADOFSLIDINGSURFACEOFTHEGUIDERAILBETWEENWIPEROLLINGGUIDERAILANDTHESLIDINGRAIL,HIGHSENSITIVITY,SMALLFRICTIONCOEFFICIENT,ANDTHEDYNAMIC,STATICFRICTIONCOEFFICIENTISVERYSMALL,SOTHEMOTIONISUNIFORM,ESPECIALLYINTHELOWSPEEDMOVEMENT,THESTICKSLIPPHENOMENONISNOTEASYTOOCCUR;HIGHPOSITIONINGACCURACY,REPEATABILITYPOSITIONINGACCURACYISUPTO02ΜM;TRACTIONFORCEISSMALL,WEARSMALL,PORTABLEINMOVEMENT;GOODPRECISION,LONGSERVICELIFEBUTTHEVIBRATIONOFROLLINGGUIDE,HIGHREQUIREMENTSONPROTECTION,COMPLICATEDSTRUCTURE,DIFFICULTMANUFACTURE,HIGHCOSTAUTOMATICTOOLCHANGERONE,THEFUNCTIONOFAUTOMATICTOOLCHANGERAUTOMATICTOOLCHANGINGDEVICECANHELPSAVETHEAUXILIARYTIMEOFCNCMACHINETOOLS,ANDMEETINANINSTALLATIONCOMPLETEDPROCEDURE,STEPPROCESSINGREQUIREMENTSTWO,ONTHEREQUIREMENTOFAUTOMATICTOOLCHANGERNUMERICALCONTROLMACHINETOOLFORAUTOMATICTOOLCHANGERREQUIREMENTISTOOLCHANGEQUICKLY,TIMEISSHORT,HIGHREPETITIVEPOSITIONINGACCURACY,TOOLSTORAGECAPACITYISSUFFICIENT,SMALLOCCUPATIONSPACE,STABLEANDRELIABLEWORKTHREE,CHANGETHEKNIFEFORM1,ROTARYCUTTERREPLACEMENTITSSTRUCTUREISSIMILARTOTHEORDINARYLATHETURRETSADDLE,ACCORDINGTOTHEPROCESSINGOFDIFFERENTOBJECTSCANBEDESIGNEDINTOSQUAREORSIXANGLEFORM,CONSISTSOFTHENCSYSTEMSENDSOUTTHEINSTRUCTIONTOTHEROTARY

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