第1題WhatdoesCNCstandfor?

AComputerNumericalControlBComputerizedNumericalControlCComplexNumericalControlD

ContinuousNumericalControl第2題Whichtechnologyutilizesdigitalinformationtogovernthemovementandoperationalprocessesofmachinery?

AMechanicalControlTechnologyBDigitalControlTechnologyCNumericalControlTechnologyDAnalogueControlTechnology第3題Inwhatyearwastheconceptofcomputer-controlledmachinetoolsproposed?

A1947B1948C1949D1950第4題WhatisoneoftheadvantagesofusingcompoundmachinetoolsinCNCtechnology?AIncreasedlaborintensityBReducedauxiliarytimeforworkpieceloadingandunloadingCSlowermachiningaccuracyDIncreasedproductioncosts第5題Whichgenerationofnumericalcontroldeviceswasintroducedin1965?ASecondgenerationBThirdgenerationCFourthgenerationDFifthgeneration第6題WhatisthemaincomponentofCNCmachinetools?AProcessingProgramCarrierBNumericalControlDeviceC

ServoSystemDAuxiliaryDevices第7題WhatisthefunctionofthefeedbacksysteminCNCmachinetools?

AToincreasethespeedofthemachinetoolsB

ToimprovethecuttingprocessCTodetecttheactualdisplacementvalueandcompareitwiththecommandvalueDToreducethecostofnumericalcontroldevices第1題WhatisthemaindifferencebetweenNCmachinetoolsandconventionalmachinetools?（）ANCmachinetoolsaremanuallyoperated.BConventionalmachinetoolsareautomaticallyprogrammed.CNCmachinetoolsautomaticallymachinepartsaccordingtopre-programmedprocedures.DConventionalmachinetoolsaremoreprecise.第2題Whatisthewholeprocessfromtheanalysisofthepartdrawingtothemakingofthecontrolmediumcalled?AMachiningprocessBNCprogrampreparationCPartdesignDBlueprintanalysis第3題Whichstepinvolvesdeterminingthemachiningmethods,tools,fixtures,andpositioningmethodsfortheparts?AAnalyzingthepartdrawingBProcessingtreatmentCThecalculationprocessingDCompilingprogram第4題WhatisthepurposeofthetrialruninNCprogramming?ATotestthemachine'sspeedBTotestiftheprogramsyntaxiscorrectandthemachiningtrackisaccurateCTocheckthequalityofthemachinedpartsDTotrainnewoperators第5題WhatistheprimaryfunctionofaCNCprogrammer?ATodesignthemachinetoolsBTomanuallyoperatethemachinetoolsCTocreateandmodifyNCprogramsDToconductqualitycontrolchecks第6題WhatisthesignificanceofthepulseequivalentinCNCmachinetools?AItisthemaximumerrorallowedinthemachiningprocess.BItistheminimumdistancethemachinetoolcanmove.CItisthedisplacementofthemovingpartsofthemachinetoolswhenthenumericalcontrolsystemoutputsapulse.DItisthespeedatwhichthemachinetoolmoves.第7題WhatisthepurposeofspecifyingthecoordinateaxisandmotiondirectionofNCmachinetools?ATomaketheprograminterchangeableBTosimplifytheprogrammingmethodCToaccuratelydescribethemotionofthemachinetoolsDAlloftheabove第8題WhichstandardhasunifiedthestandardcoordinatesystemforNCmachinetools?AISOStandardBChineseStandardCAmericanStandardDEuropeanStandard第9題WhatisthepositivedirectionoftheZ-axiscoordinateinNCmachinetools?AThedirectionofincreasingthedistancebetweentheworkpieceandthetoolBThedirectionofdecreasingthedistancebetweentheworkpieceandthetoolCThedirectionofthetoolmovingtowardstheworkpieceDThedirectionoftheworkpiecemovingtowardsthetool第10題WhatisthefunctionofG-instructionsinNCprogramming?ATocontrolthespindlespeedBTocontrolthefeedrateCTopreparethemachineforacertainmovementDTocontrolthetoolchange第11題WhatisthepurposeofM-instructionsinNCprogramming?ATocontrolthespindlespeedBTocontrolthefeedrateCTocontrolmiscellaneousfunctionssuchastoolchangeandcoolantcontrolDTopreparethemachineforacertainmovement第12題WhatisthefunctionoftheFinstructioninNCprogramming?AWhatisthefunctionoftheFinstructioninNCprogramming?BTocontrolthefeedrateCTopreparethemachineforacertainmovementDTocontrolthetoolchange第13題WhatisthefunctionoftheSinstructioninNCprogramming?ATocontrolthespindlespeedBTocontrolthefeedrateCTopreparethemachineforacertainmovementDTocontrolthetoolchange第14題WhatisthefunctionoftheTinstructioninNCprogramming?ATocontrolthespindlespeedBTocontrolthefeedrateCToselectthedesiredtoolintheNCmachinetoolsDTopreparethemachineforacertainmovement第15題WhatisthepurposeoftheG92instructioninNCprogramming?ATosetthemachinecoordinatesBTosettheworkpiececoordinatesCTocancelthetoolradiuscompensationDTocontrolthespindledirection第16題Whatisthesignificanceoftheprogramstartcharacterinapartprogram?AItgivesanumbertothepartprocessingprogramandexplainsthebeginningofit.BItindicatestheendoftheprogram.CItcontrolsthespindlespeed.DItsetstheworkpiececoordinates.第17題WhichofthefollowingisacorrectstatementabouttheG71cycleinCNClatheprogramming?AItisusedforfinishingoperations.BItisusedforroughingoperations.CItisusedforthreadingoperations.DItisusedfordrillingoperations.第18題WhatisthepurposeoftheG73cycleinCNClatheprogramming?ATominimizethecuttingtimeforroughingmaterialofirregularshapes.BTofinishcutpathsdefinedandroughedoutwithstockremovalcyclesG71.CToperformdrillingoperationswithadwellatthebottomofthehole.DTorepeatthemachiningcontourspecifiedbetweenthePandQpoints.第19題WhatisthefunctionoftheRaddressintheG71cycle?AItrepresentsthedepthofcutperside.BItrepresentsthestockleftondiameter.CItrepresentsthedepthofcutfortheentireoperation.DItrepresentsthefeedratefortheroughingcycle.第20題Inthecontextofcannedcyclesforholeoperations,whatdoestheG98codesignify?AThetoolreturnstotheinitialpointaftertheoperation.BThetoolreturnstotheRlevelaftertheoperation.CThetooldwellsatthebottomoftheholeforaspecifiedtime.DThetoolperformsarapidpositioningtotheholecenter.第21題WhatisthesignificanceoftheRaddressintheG81drillingcycle?AItisthefinalZ-axisdepthofthehole.BItistheZ-axisclearanceplane.CItisthefeedrateforthetoolintothehole.DItistherepeattimesforthedrillingoperation.ChapterExamination第1題WhatisthecoreofaCNCsystem?AMechanicalcomponentsBSpecializedoperatingsystemCHardwarecomponentsonlyDSoftwarecomponentsonly第2題WhichofthefollowingisNOTacomponentofatypicalCNCsystem?ACPUBROM/RAMCInputandoutputequipment(I/O)DHydraulicsystem第3題WhatdoestheNCKunitinaCNCsystemhandle?A

Digitalcontrolofthemachinetool'strajectorymotionBLogicalcontrolofswitchquantitiesCManagementofmachinetool'spowersupplyDOperationofthespindle第4題WhichmoduleinterpretsthepartprogramintheNCKunit?

AInterpretermoduleBInterpolatormoduleCPositioncontrolunitDPLCunit第5題WhatisthefunctionoftheMMIunitinaCNCsystem?

ATocontrolthespindlespeedBToenableuseroperation,monitoroperationstatus,andmakepartprogramsCTomanagetoolcompensationDTohandleI/Oprocessing第6題WhatistheprimaryfunctionofthePLCunitinaCNCsystem?ATocontrolthemachine'strajectorymotionB

TomanagelogicalcontrolofswitchquantitiesCTohandleuserinterfaceoperationsDTomanageI/Oprocessing第7題WhatisthemainperformancecharacteristicofaCNCsystemrelatedtothenumberofcontrollableaxes?

ASpeedBAccuracyCComplexityDControllability第8題WhatfunctiondoesthepreparatoryfunctioninaCNCsystemserve?

ATocontrolthefeedrateBTodeterminethemovementmodeofthemachinetoolCTomanagetoolcompensationDTohandleI/Oprocessing第9題WhatisthefeedfunctionresponsibleforinaCNCsystem?ADeterminingthefeedspeedoftheCNCmachinetoolB

ControllingthespindlespeedC

ManagingtoolchangesDHandlingcompensationfunctions第10題WhatisthespindlefunctionresponsibleforinaCNCsystem?

A

DeterminingthespeedofthespindleBManagingthefeedrateCControllingthetoolchangerDHandlingthecuttingfluid第11題WhatdoesthetoolfunctioninaCNCsystemdo?ASelectthedesiredtoolBManagethespindle'spowersupplyCControlthemachine'sfeedrateDHandlethemachine'sI/Oprocessing第12題WhatisthepurposeofthecompensationfunctioninaCNCsystem?

AToadjustthetooltrajectoryandcoordinatedimensionsBTomanagethemachine'spowersupplyCTocontrolthespindlespeedDTohandleI/Oprocessing第13題WhatfunctiondoesthecharactersandgraphicsdisplayfunctionserveinaCNCsystem?ATodisplayvariousinformationsuchasprograms,parameters,andfaultinformationBTocontrolthemachine'sfeedrateCTomanagetoolcompensationDTohandleI/Oprocessing第14題Whatistheself-diagnosisfunctioninaCNCsystemusedfor?A

TodisplayvariousinformationBTopreventfaultsandquicklyidentifythemCTomanagetoolcompensationDTohandleI/Oprocessing第15題WhatisthecommunicationfunctioninaCNCsystemusedfor?

ATodisplayvariousinformationBToallowreal-timemonitoringandremotemaintenanceofmachinetooldataCTomanagetoolcompensationDTohandleI/Oprocessing第16題Whatisthehuman-computerinteractiongraphicprogrammingfunctioninaCNCsystemusedfor?ATomanagethemachine'spowersupplyBToenhancetheefficiencyofprogrammingcomplexpartswithgraphicsCTocontrolthespindlespeedDTohandleI/Oprocessing第17題WhattypeofCNCsystemarchitectureiscapableofmeetingthedemandsofhighfeedspeedandcomplexfunctions?

ASingle-microprocessorarchitectureBMulti-microprocessorarchitectureCSequentialarchitectureDParallelarchitecture第18題WhatistheprimaryadvantageofparallelprocessinginCNCsystems?A

EnhancedprocessingspeedB

IncreasedaccuracyCImproveduserinterfaceDBettertoolmanagementChapterExamination第1題Whatisthetermusedtodescribetheoperationofproducingtherequiredshapebasedonthemachiningpathinformation?AMachiningBControlCInterpolationDCompensation第2題Whatdoestheinterpolatorprovidefortheposition-andvelocity-controlloops?AReferencepositionsBReferenceforcesCReferencespeedsDReferencepressures第3題WhichofthefollowingisNOTatypicalinterpolatorcapability?

AGeneratinglinearpathsBGeneratingcircularpathsCGeneratingcubicpathsD

Generatingreferencesignals第4題InaReference-PulseSystem,whatdoestheaccumulatednumberofpulsesrepresent?A

TimeBPositionCForceDTemperature第5題WhatistherelationshipbetweenpulsefrequencyandaxisvelocityinaReference-PulseSystem?

AInverselyproportionalBUnrelatedC

ProportionalDExponential第6題Whattypeofsystemusesreferencebinarywordstoclosethecontrolloopofeachaxis?

AReference-PulseSystemBOpen-LoopSystemCClosed-LoopSystemDSampled-DataSystem第7題Whichinterpolatorroutineissimplertoprogrambuthasrestrictionsonmaximumaxisvelocity?ADDABSampled-dataCReference-pulseDPoint-by-pointcomparison第8題WhatistheothernameforSampled-datainterpolatorinterpolation?ADigitalincrementalinterpolationB

AnaloginterpolationC

Time-scalarinterpolationDPulse-basedinterpolation第9題WhatisthefirststepinthePoint-by-pointcomparisonmethodalgorithm?ADeviationjudgementB

DirectioncontrolCStepexecutionDEndpointcheck第10題InthePoint-by-pointcomparisonmethod,howisthedirectionofthenextfeeddetermined?

ARandomlyB

BasedonthedeviationC

BasedonthequadrantDBasedontheaxisvelocity第11題Whatisthenameofthemethodthatapproximatestheintegraloperationofafunctionbysummingtheareasofthinrectanglesbeneaththecurve?ADDAmethodBStaircasemethodCNumericalintegrationmethodDPoint-by-pointcomparisonmethod第12題IntheDDAmethod,whatdoesΔt

represent?

AAxisvelocityBPulsefrequencyCIterationtimeintervalDMachineacceleration第13題Whatisthenameofthemethodthattransformstheintegraloperationofafunctionintoanaccumulationoperationofsummation?

ASummationoperationBDifferentialoperationCIntegrationtransformationDAccumulationoperation第14題Whatisthenameofthemethodthatapproximatesacirclewithstraightlinesegmentsforcircularinterpolation?

ALineapproximationBCircleapproximationCArcapproximationDSegmentapproximation第15題Whatisthenameofthemethodthatexecutesinterpolationintwostages:roughinterpolationandfineinterpolation?AReference-pulseinterpolationmethodBSampled-DatainterpolationmethodCDDAinterpolationmethodDPoint-by-pointinterpolationmethod第16題Whatisthetypicalmethodforprocessingtheresiduallengthininterpolation?

AIgnoringtheremainderBAllocatingtheremainderevenlyCDoublingthelastinterpolationvalueDHalvingthelastinterpolationvalue第17題Whatisthekeyfactorforinterpolationinthereferencewordinterpolatorforacircle?

AThenumberoflinesegmentsBThepositionofthestartingpointCThevelocityoftheaxesDThesizeofangleα

第18題Whatdoesthereferencewordinterpolatorforacircleapproximatethecircularpathwith?ALargearcsegmentsBCircularincrementsCTangentialvelocityvectorsDSmalllinesegmentsChapterExamination第1題Whatisthetermforaservosystemthathasnofeedbackloop?AOpen-loopsystemBClosed-loopsystemC

Semi-closed-loopsystemDHybridsystem第2題Whichtypeofservosystemisresponsibleforcontrollingtherotationofthemachinespindle?AFeedservosystemBSpindleservosystemCLinearservosystemDHybridservosystem第3題InCNCmachinetools,whatdoesthefeedservosystemregulate?AMaterialselectionBPositionandspeedofmovingpartsCMachine'spowersupplyDToolchanges第4題WhattypeofcontroldoesthefeedsystemofCNCmachinetoolstypicallyoperateunder?AConstanttorquecontrolBConstantpowercontrolCVariabletorquecontrolDVariablepowercontrol第5題Whatistheprimaryfunctionofthespindleservosysteminalathe?ASpeedcontrolBPositioncontrolCTemperaturecontrolDLoadcontrol第6題WhatisthequasistopcontrolfunctionusedforinCNCmachinetools?ATofacilitatetoolchangesBTomanagespindlespeedCTocontrolmachinestart/stopDToensureprecisepositioningforcertainoperations第7題WhatisthesignificanceofhighreliabilityintheservosystemofCNCmachinetools?AItreducesmaintenancecostsBItimprovesmachineefficiencyCItensuresconsistentperformanceDAlloftheabove第8題Howdoesenergyefficiencyintheservosystemcontributetoindustry?AReducesoperatingcostsBDecreasescarbonemissionsCSupportssustainabledevelopmentDAlloftheabove第9題WhatistheprimaryfunctionofasteppingmotorinCNCmachinetools?ATogeneratehigh-speedrotationsBToprovideprecisepositioningandmovementCTocontrolthemachine'spowersupplyDTomanagetoolchanges第10題Whatarethetwocommonmethodsfordrivingsteppingmotors?AConstant-currentandconstant-voltagedrivemethodsBDCandACdrivemethodsCOpen-loopandclosed-loopdrivemethodsDDigitalandanalogdrivemethods第11題Whatisthepurposeofmicrosteptechnologyinsteppingmotors?AToincreasethemotor'sspeedBToreducethemotor'ssizeCToachievesmallermovementsbydividingthebasicstepangleDToimprovemotorefficiency第12題Whatisthemainadvantageofusingaconstant-currentdrivemethodforsteppingmotors?ASimplecircuitconfigurationB

ExcellenttorquecharacteristicsathighspeedsCLowpowerconsumptionDResistancetointerference第13題WhatisthetermusedforaCNCsystem'sabilitytoaccuratelytrackcommands?ADynamicresponsespeedBStaticresponsespeedCCommandtrackingspeedDFeedbackresponsespeed第14題InCNCsystems,whatdoestheterm"modal"refertointhecontextofG-codes?AAcodethatremainseffectiveuntilanothercodeofthesamegroupisusedBAcodethatonlyaffectstheimmediateoperationCAcodethatcontrolsthetoolpathdirectlyDAcodethatmanagesmachinestartandstopfunctions第15題Whatistheroleofthespeedloopinaclosed-loopservosystem?ATocontrolthepositionoftheservomotorBToregulatethespeedoftheservomotorCTomanagethetoolchangesDTohandlethemachine'spowersupply第16題WhatisthesignificanceofthepositionloopinaCNCservosystem?AToincreasethespeedoftheservomotorBTomanagethetoolmagazineCTohandlethemachine'spowersupplyDTocontrolthemotioncoordinateaxisoftheCNCmachinetool第17題Howdoesthesemi-closed-loopservosystemdifferfromtheclosed-loopsystem?AIthasahighercontrolaccuracyBItusesadifferenttypeofmotorCThepositiondetectionelementisnotdirectlyinstalledonthefinalmovingpartD

IthasaseparatefeedbackloopforeachaxisChapterExamination第1題WhatisanInductosynusedforinCNCmachinetools?AMeasuringtemperatureBMeasuringanglesandlengthsCControllingspindlespeedDMonitoringcoolantflow第2題HowdoestherotaryInductosyndifferfromthelinearInductosyn?ARotarymeasuresangles,linearmeasureslengthsBBothmeasureanglesCBothmeasurelengthsDTheyarethesame,justdifferentnames第3題WhatisthetypicalwindingpitchforthefixedscaleofanInductosyn?

A0.5mmB1mmC2mmD5mm第4題WhatisthespatialpositiondifferencebetweenthesineandcosinewindingsontheslideruleofanInductosyn?A0pitchBOne-fourth(1/4)pitchCHalfpitchDOnepitch第5題Whichtypeofencoderisconsiderednon-contactandthushasnofriction?A

Electromagnetic-inductiontypeBContacttypeC

PhotoelectricencoderDElectromechanicaltype第6題Whatistheadvantageofphotoelectricencodersovercontacttypes?AHigherfrictionBLargerdrivingforceCSlowerresponseDHigherreliability第7題Whattypeofencoderscansavepositioninformationafterpoweroff?AIncrementalencodersBAbsoluteencodersCResolversDInductosyns第8題Whatarethetwotypesofmeasurementsignalsobtainedbydetectionelements?ADigitalandelectromagneticBAnalogandelectromagneticCDigitalandmechanicalDDigitalandanalog第9題WhatistheprinciplebehindtheoperationofaGratingRuler?ALighttransmissionorreflectionandmoiréfringestheoryBElectromagneticinductionCPiezoelectriceffectDMagnetoresistanceeffect第10題WhattypeofGratingRuleristypicallyusedforhigherresolutionmeasurements?ATransmissiontypeBReflectiontypeCElectromechanicaltypeDDigitaltype第11題WhatistheprimaryfunctionofapositiondetectiondeviceinCNCmachinetools?

ATogeneratecuttingtoolpathsBTodetectdisplacementandspeedCTocontrolthespindlespeedDTomonitorcoolantflow第12題WhatisthesignificanceoftheresolutionofadetectiondeviceinCNCmachinetools?AItdeterminesthemachine'scolorBItaffectsthemachine'sweightCItaffectsthemachine'sspeedandaccuracyrequirementsDItdeterminesthemachine'sprice第13題Whatisthedifferencebetweenincrementalandabsolutemeasurementdetectiondevices?

AIncrementaldevicesmeasureinanalogsignals,absoluteindigitalBIncrementaldevicesmeasuredisplacement,absolutemeasurevelocityCIncrementaldevicesmeasuretemperature,absolutemeasurepressureDIncrementalmeasuredisplacementincrement,absolutemeasureabsolutecoordinatevalue第14題WhatistheprimaryfunctionofaresolverinCNCmachinetools?AMeasuringangulardisplacementBControllingspindlespeedC

MonitoringcoolantflowDGeneratingcuttingtoolpaths第15題Whatarethetwooperatingmodesofaresolver?APhasediscriminationandamplitudemodulationBPhasediscriminationandamplitudediscriminationCFrequencydiscriminationandamplitudediscriminationDPhasemodulationandamplitudemodulation第16題Whatistheadvantageofabrushlessresolvercomparedtoabrushresolver?A

SimplerstructureBLargersizeCHighercostDEnhancedreliabilityandextendedservicelife第17題Whatisthesignificanceofthephaseangleintheresolvermeasurementmethod?

AItindicatestheresolver'svoltageBItindicatestheresolver'scurrentCItindicatesthechangeinpositionofthesliderulerelativetothefixedruleDItindicatestheresolver'sfrequency第18題Whatisthepurposeoftheamplitudediscriminationmodeinresolvers?

ATodeterminethemechanicaldisplacementusingtheamplitudeofthepositiondetectionsignalBToincreasetheresolver'svoltageCTodecreasetheresolver'scurrentDTochangetheresolver'sfrequencyChapterExamination第1題WhatisthemaincomponentofaCNCmachinetool'sstructure?AControlsystemBMechanicalstructureCElectricalsystemDHydraulicsystem第2題WhattypeofmachinetoolstructureismodernCNCmachinetoolsbasedon?

AGeneralmachinetoolstructureBTraditionalmachinetoolstructureCDigitalcontrolsystemstructureDElectromechanicalsystemstructure

第3題WhatisoneofthekeyrequirementsforthemechanicalstructureofCNCmachinetools?AHighflexibilityBLowprecisionCHighstiffnessandminimalthermaldeformationDLowspeed第4題WhichmeasurecanbeusedtoincreasethestiffnessoflargecomponentsinCNCmachinetools?AUsingabedwithaclosedinterfaceBReducingthesizeofthecomponentsCDecreasingthenumberofcomponentsDIncreasingthedistancebetweencomponents第5題HowcanthestiffnessofthespindlebeenhancedinCNCmachinetools?

AByreducingthenumberofbearingsBByusingsingle-rowbearingsCBydecreasingthesizeofthebearingsDByusingathree-supportstructureanddouble-rowshortcylindricalrollerbearings第6題Whatisthepurposeofminimizingthecantileverlengthofthespindle-end-overhang?AToincreasethespeedofthespindleBToreducebendingmomentsCTodecreasetheweightofthespindleDToreducethecostofthespindle第7題Whatmethodi