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MechanicalEngineeringPractice金工实习智慧树知到期末考试答案+章节答案2024年南京理工大学HighspeedCNCmachiningcangenerallyremovematerialmuchslowerthanAMmachinescanaddasimilarvolumeofmaterial.
答案:错Thelargepointerofthedialindicatorrotatesbyonedivision,indicatingthatitsrodmovesby0.01mm,sothereadingvalueofthedialindicatoris0.01mm.
答案:对Inthesamelocationtestseveraltimes,takethemaximumvalueasthemeasuringresults.
答案:错ThetermRapidPrototyping(orRP)isusedinavarietyofindustriestodescribeaprocessforrapidlycreatingasystemorpartrepresentationbeforefinalreleaseorcommercialization.
答案:对Theverniercaliperwithareadingvalueof0.02mm,thescalespacingontherulerbodyis0.02mmlargerthanthescalespacingonthevernier.
答案:对Thetwo-plateinjectionmoldissonamedsinceitconsistsoftwoassembledsections.
答案:对Thehigherthegeometriccomplexity,thegreatertheadvantageAMhasoverCNC.
答案:对Airshipsandballoonsgoupandstayintheairbyfillingthemwithlightgases.
答案:对Airship,an
aircraft
that
consists
of
a
cigar-shaped
gas
bag,
or
envelope,
filledwith
a
lighterthanairgas
to
provide
lift,
a
propulsion
system,and
soon.
答案:对AllAMmaststartfromasoftwaremodelthatfullydescribestheexternalgeometry.
答案:对Airship,an
aircraft
that
consists
of
a
cigar-shaped
gas
bag,
or
envelope,
filledwith
a
lighterthanairgas
to
provide
lift,
a
propulsion
systemand
soon.
答案:对Theprimarypurposeofthepartingplaneistotightlysealthecavityofthemoldandpreventmeltleakage.
答案:对Automaticprogrammingisefficientandcanmeetallrequirements.
答案:错Measuringtheroundnesserrorcanbeusedinthreepointmethod.
答案:对Thegeometrictoleranceistolimittheshapeerrorofthepart.
答案:错Therougherthesurfaceofthepart,thebetterthewearresistance.
答案:错Thetemperatureofthemoldedpartsatthetimeofejectionisnotacomplexfunctionfothemoldedpartdesign,coolinglinedesign,materialproperties.
答案:错Vernierprotractor’sreadingprincipleassameastheverniercaliper.
答案:对ThepartingplaneoftheinjectionmoldislocatedbetweentheAandtheBplates.
答案:对Itisnotnecessarilythatthetwocavitymoldhastwocavitiestoproducetwomoldingsineachmoldingcycle.
答案:错ThethinnereachlayerisnotthecloserthefinalpartwillbetheoriginalinAM.
答案:错AMtakesfulladvantageofmanyoftheimportantfeaturesofcomputertechnology,bothdirectly(intheAMmachinesthemselves)andindirectly(withinthesupportingtechnology).
答案:对Objectivesinmoldcoolingsystemdesigninclude().
答案:minimizemoldcost;facilitatemoldusage;minimizevolumeandcomplexityAdditiveManufacturingisbecomingmoreandmorepopularinmedicalapplications,wherepatient-specificgeometriesarerequired.WhichcanbeformedbyAdditiveManufacturing?
答案:dentistry;orthopedics;hearingaidsComparedtosteel,whataretheadvantagesofplastics?()
答案:betterprocessingperformance;betterplasticity;lowdensity;bettercorrosionresistanceAircraftsgenerallyrefertoflightvehiclesflyingintheatmosphere,like().
答案:Airplanes;helicopters;hot-airballoonsWhatarethestagesinmostinjectionmoldingprocesses?()
答案:cooling;injection;plastication;moldresetting;packingTheinnerdiameterdialindicatorandtheinnerdiametermicrometercanreadthemeasuredsizedirectlyfromthemeasuringinstrument.
答案:错TheSTLfiledescribestheexternalclosedsurfacesoftheoriginalCADmodelandformsthebasisforcalculationoftheslices.
答案:对Whatarethestepanalysisprocessfortheanalysisanddesignofvents?()
答案:Theairdisplacementrateshouldbeestimatedrelativetothemeltflowrate.;Thenumber,type,andlocationofventsmustbeassessed.;Thewidth,length,andthicknessofeachventmustbespecified.Thevernieruniversalanglerulercanmeasureanyanglefrom0°to360°.
答案:错Thestandardizationofthebasicdimensionsisto().
答案:simplifythespecificationsandquantityoffixed-valuetoolsandmeasuringtoolsTheworkingprincipleofthedialindicatoristoconvertthelinearmovementofthemeasuringrodintoapointer()throughtherackandgeartransmission.
答案:SwingmotionMatchingholeandshaft,thesizeoftheholeisφ40+0.15+0.05mm,thesizeoftheshaftisφ400.-0.10mm,andtheirgapis().
答案:0.25Whatrelationshipsarestudiedinmaterialsscience?()
答案:processing;structure/composition;performance;propertiesVerniercalipersaresuitablefor()sizemeasurementandinspection.
答案:MediumaccuracyParallelismtolerancebelongsto()toleranceinpositiontolerance.
答案:OrientationWhichofthefollowingoperationsarestepsofmetallographicspecimenspreparation?()
答案:grinding;polishing;mounting;etchingWiththeadditionofsomesupportingtechnologieslike(),etc.AMtechnologycanbepossibletomanufactureavastrangeofdifferentpartswithdifferentcharacteristics.
答案:polishers;grinders;silicon-rubbermolding;drillsInthemarkingofthesurfaceroughnesscode,theparametercodemaynotbemarkedwhenthe()parameterisused.
答案:RaThecoaxialitytolerancebelongsto()tolerance.
答案:OrientationTheassemblyprocessofthehelicoptermodelneedstobeverycareful,payattentiontoeverydetail,including(
)
答案:Glue;DirectionoftheapronpartThe
helicopter
uses
gravity
and
updrafts
of
airto
keep
it
flying;
slope
soaring
relies
onwind
rising
off
dunes
or
hillsides.
答案:错Glider
a
heavier-than-air
craft
with
flapping
wings.
A
flapping
motion
of
wings
is
used
inflight
by
various
living
beings,
such
as
birds.
答案:错Weseethatheavier-than-airaircraftare(
)
答案:rockets;glidersDigitalistheprocessthatintegratedapplies
()totransformtraditionalcontentandtechnologysystem.
答案:informationtechnology;computertechnology;networktechnologyServicesNetworkisnotamajordriverofindustry4.0.
()
答案:错Digitizationisthroughouttheprocess
ofProductLifeCycle.()
答案:对Digitaldesignandmanufacturemainlyincludes()
fordatatransmission.
答案:DigitalmeansInthesecondindustrialrevolution,large-scaleproductionusingelectricdriveswasappeared..
()
答案:对Accordingtotheshapeandprocessingrequirements,programmercompilesmachiningprocessintomachiningprogram.()
答案:对Manufacturingresources
just
include
technicalresources
and
materialresources.()
答案:错Industry4.0beganinthe18centurywiththeintroductionofmachinerymanufacturingequipment.
()
答案:对Inthecompany-wideprogramlayer,wegenerallyuse
ManufacturingExecutionSystems.()
答案:错Typically,therearefourmainmethodsofrapidprototyping.
()
答案:对Pearliteisatwo-phased,lamellarstructurecomposedofalternatinglayersof().
答案:ferriteandcementiteMaterialscienceistheinvestigationoftherelationshipamong().
答案:processing;structure/composition;properties;performanceTheuseofmaterialsbeginsin().
答案:stoneageStructuralmaterialsinclude().
答案:aluminum;steel;ironObservedphasesduringopticalmicroscopyobservationofironandsteelinclude().
答案:α-ferrite;δ-ferrite;γ-austenite;CementiteIroncanbeclassifiedinto().
答案:whitecastiron;spheroidalgraphitecastiron;greycastironStepsofmetallographicspecimenspreparationinclude().
答案:etching;grinding;polishing;mountingFunctionalmaterialsinclude().
答案:superconductingmaterials;magneticmaterialsThedeterminationof()onspecimensisimportantforqualitycontrol.
答案:grainsizeNaturalmaterialsinclude().
答案:bone;fibers;feather;clayServiceisalsoakindofproduct.(
)
答案:对Industrialdesignappearedbeforetheindustrialrevolution.(
)
答案:错Whichofthefollowingisnotafunctionofrenderings?(
)
答案:communicatewithdownstreamindustryClassicblueisthepopularcolorof(
).
答案:2020MUJIproductshaveveryrichcolors.(
)
答案:错Whenweareresearchingexistingproducts,thefollowingpointsneedtobeconsidered.(
)
答案:price;appreciation;function;materialPayingattentiontoindustrialdesignisApple'swaytosuccess.(
)
答案:对Productdesignincludes(
).
答案:improveddesign;conceptualdesign;innovativedesignDesignsketchcanhelpdesignerstoclarifydesignideasquickly.
(
)
答案:对ThesuccessoftheOXOpeelerisdueto(
).
答案:antiskidfeatures;innovativeapplicationofmaterials;beautifulappearanceAfterthepartspatternanalysis,weneedtoplaitthemachiningtool'spathanddynamic
simulatethepathbasedontheMasterCAM.
答案:对Afterwechoosethelathe,weneedtoensuretherouteoftheknifeaccordingtotherequirementsofthepartsprocessing.
答案:对Wecanchoosethelatheaccordingtotherequirementsofthepartsprocessing.
答案:对WhenwedoprogramminginMasterCAMweneedtomovethedrawingtotheoriginofthecoordinates.
答案:对Theprocessingmethodsincludemillingtheshape,millingtheplanar,chamferring,drillingholesandsoon.
答案:对WecancompleteanautomaticprogrammingofNClathebasedon(
)software.
答案:MasterCAM.Weneedselecttheparametersoftheroughmachiningandthefinishmachining.
答案:对InMasterCAMwecanseetherouteoftheknife.
答案:对weneedtomakethemodelinginthesoftwaressuchas(
)
答案:Creo;AutoCAD;SolidworksWeChoosethe
keyseatcutteraccordingtotheprocessingrequirements.
答案:对Near-netshapingisanotherimportantfeatureofAMtechnology,whichsignificantlyminimizesmaterialuseandwaste.AjointstudyhasshownthatAMisabletoreducetheconsumptionofrawmaterialsbyupto
答案:75%WhichisthemostwidelyusedAMtechniqueatthepresentday?
答案:FusedDepositionModeling(orFDM)WherecouldAdditiveManufacturingbeused?
答案:art;jewelry;architecture;medical;defense;aerospace;automotiveWellsuitingtherequestsofmodernmanufacturingclimate,AdditiveManufacturingisviewedasthenewindustrialrevolution,makingitswayintoacontinuouslyincreasingnumberofindustries.
答案:对WhichapparatuswasAMtechnologycommercializedwith?
答案:Stereolithography(SLorSLA)AMmachineisaWhatYouSeeIsWhatYouBuild(WYSIWYB)processthat’sparticularlyvaluablethemorecomplexthegeometryis.
答案:对WhicharethecharacteristicsofAMtechnology?
答案:shortleadtime;superiorflexibility;near-netshaping;instantlocalproductiononaglobalscaleWhicharethesametechniqueswithAdditiveManufacturing?
答案:freeformfabrication;RapidPrototyping;additivefabrication;3DprintingWhileearlierworkinJapanisquitewell-documented,provingthatthisconceptcouldberealized,itwasthepatentbyCharlesHullthatisgenerallyrecognizedasthemostinfluential
sinceitgaveriseto3DSystems.
答案:对WhichcanbeusedbyAdditiveManufacturing?
答案:liquids;wires;sheets;powdersThesurfaceroughnesssymbolrepresentsthemachinedsurfaceobtainedbymaterialremoval.
()
答案:错Theouterdiametermicrometerisameasuringtoolformeasuringapertureandgroovedepth.
()
答案:错Whenmeasuringworkpiecewithverniercaliper,themeasurementerrorwillincreaseiftheforceistoolargeortoosmall.
()
答案:对Surfaceroughnessbelongstomicrogeometricerror.
()
答案:对Thesurfaceroughnessofpartsisdirectlyrelatedtotheprocessingmethod.()
答案:对Whetherapartisqualifieddependsfirstonwhetherithas
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