Mechanical Engineering Practice 金工实习知到章节答案智慧树2023年南京理工大学

MechanicalEngineeringPractice金工实习知到章节测试答案智慧树2023年最新南京理工大学绪论单元测试

Inthiscourse,whichpartdoestheknowledgeof“injectionmolding”belongto?

参考答案:

Manufacturing;

第一章测试

Thepartingplaneisthecontactsurfacebetweenthestationaryandmovingsidesofthemold.

参考答案:

对

Duringtheplasticationstage,thepolymermeltisforcedfromthebarrelofthemoldingmachineandintothemold.

参考答案:

错

Afterthemoldcavityisfilledwiththepolymermelt,thepackingstageprovidesadditionalmaterialintothemoldcavityasthemoltenplasticmeltcoolsandcontracts.

参考答案:

对

Aninjectionmoldhasmanystructurestoaccomplishthefunctionsrequiredbytheinjectionmoldingprocess.

参考答案:

对

Aninjectionmoldisconstructedofanumberofplates,boltedtogetherwithsocketheadcapscrews.

参考答案:

对

第二章测试

Whetherapartisqualifieddependsfirstonwhetherithasreachedthebasicsize.

Justequaltothebasicsizemustbequalifiedproducts.（）

参考答案:

错

Dimensionaldeviationisthedifferenceofacertainsizeminusitsbasicsize,sothesizedeviationcanbepositive,negativeandzero.

（）

参考答案:

对

Positiontolerancecanbedividedintothreecategories:directionaltolerance,positioningtoleranceandrunouttolerance.（）

参考答案:

对

Thesurfaceroughnessofpartsisdirectlyrelatedtotheprocessingmethod.（）

参考答案:

对

Surfaceroughnessbelongstomicrogeometricerror.

（）

参考答案:

对

Thesurfaceroughnesssymbolrepresentsthemachinedsurfaceobtainedbymaterialremoval.

（）

参考答案:

错

Whenmeasuringworkpiecewithverniercaliper,themeasurementerrorwillincreaseiftheforceistoolargeortoosmall.

（）

参考答案:

对

Theouterdiametermicrometerisameasuringtoolformeasuringapertureandgroovedepth.

（）

参考答案:

错

Thevernieruniversalanglerulercanmeasureanyanglefrom0to360degrees.

（）

参考答案:

错

Relativemeasurementmethodisusedwhenmeasuringlengthwithpercentilemeter.

（）

参考答案:

对

第三章测试

WhileearlierworkinJapanisquitewell-documented,provingthatthisconceptcouldberealized,itwasthepatentbyCharlesHullthatisgenerallyrecognizedasthemostinfluential

sinceitgaveriseto3DSystems.

参考答案:

对

WhichapparatuswasAMtechnologycommercializedwith?

参考答案:

Stereolithography(SLorSLA)

WhicharethecharacteristicsofAMtechnology？

参考答案:

instantlocalproductiononaglobalscale

;superiorflexibility;near-netshaping;shortleadtime

Near-netshapingisanotherimportantfeatureofAMtechnology,whichsignificantlyminimizesmaterialuseandwaste.AjointstudyhasshownthatAMisabletoreducetheconsumptionofrawmaterialsbyupto

参考答案:

75%

WhichisthemostwidelyusedAMtechniqueatthepresentday？

参考答案:

FusedDepositionModeling(orFDM)

WhicharethesametechniqueswithAdditiveManufacturing？

参考答案:

freeformfabrication;3Dprinting;additivefabrication;RapidPrototyping

WhichcanbeusedbyAdditiveManufacturing？

参考答案:

powders

;sheets;

liquids;wires

AMmachineisaWhatYouSeeIsWhatYouBuild(WYSIWYB)processthat’sparticularlyvaluablethemorecomplexthegeometryis.

参考答案:

对

Wellsuitingtherequestsofmodernmanufacturingclimate,AdditiveManufacturingisviewedasthenewindustrialrevolution,makingitswayintoacontinuouslyincreasingnumberofindustries.

参考答案:

对

WherecouldAdditiveManufacturingbeused?

参考答案:

automotive;defense

;architecture

;medical

;aerospace;jewelry;art

第四章测试

WecancompleteanautomaticprogrammingofNClathebasedon(

)software.

参考答案:

MasterCAM.

weneedtomakethemodelinginthesoftwaressuchas（

）

参考答案:

Solidworks;AutoCAD;Creo

Afterthepartspatternanalysis,weneedtoplaitthemachiningtool'spathanddynamic

simulatethepathbasedontheMasterCAM.

参考答案:

对

WhenwedoprogramminginMasterCAMweneedtomovethedrawingtotheoriginofthecoordinates.

参考答案:

对

Afterwechoosethelathe,weneedtoensuretherouteoftheknifeaccordingtotherequirementsofthepartsprocessing.

参考答案:

对

Wecanchoosethelatheaccordingtotherequirementsofthepartsprocessing.

参考答案:

对

Theprocessingmethodsincludemillingtheshape,millingtheplanar,chamferring,drillingholesandsoon.

参考答案:

对

WeChoosethe

keyseatcutteraccordingtotheprocessingrequirements.

参考答案:

对

Weneedselecttheparametersoftheroughmachiningandthefinishmachining.

参考答案:

对

InMasterCAMwecanseetherouteoftheknife.

参考答案:

对

第五章测试

Industrialdesignappearedbeforetheindustrialrevolution.（

）

参考答案:

错

Serviceisalsoakindofproduct.（

）

参考答案:

对

Productdesignincludes（

）.

参考答案:

improveddesign

;innovativedesign;conceptualdesign

ThesuccessoftheOXOpeelerisdueto(

).

参考答案:

innovativeapplicationofmaterials;beautifulappearance

;antiskidfeatures

MUJIproductshaveveryrichcolors.（

）

参考答案:

错

PayingattentiontoindustrialdesignisApple'swaytosuccess.（

）

参考答案:

对

Classicblueisthepopularcolorof(

).

参考答案:

2020

Whenweareresearchingexistingproducts,thefollowingpointsneedtobeconsidered.(

)

参考答案:

appreciation;

material;function

;price

Designsketchcanhelpdesignerstoclarifydesignideasquickly.

（

）

参考答案:

对

Whichofthefollowingisnotafunctionofrenderings?(

)

参考答案:

communicatewithdownstreamindustry

第六章测试

Theuseofmaterialsbeginsin().

参考答案:

stoneage

Naturalmaterialsinclude().

参考答案:

feather

;bone

;fibers;clay

Structuralmaterialsinclude().

参考答案:

iron

;steel

;aluminum

Functionalmaterialsinclude().

参考答案:

superconductingmaterials

;magneticmaterials

Ironcanbeclassifiedinto().

参考答案:

spheroidalgraphitecastiron

;whitecastiron;greycastiron

Stepsofmetallographicspecimenspreparationinclude().

参考答案:

mounting

;polishing;grinding

;etching

Materialscienceistheinvestigationoftherelationshipamong().

参考答案:

properties

;performance;processing

;structure/composition

Observedphasesduringopticalmicroscopyobservationofironandsteelinclude().

参考答案:

α-ferrite

;Cementite;δ-ferrite

;γ-austenite

Pearliteisatwo-phased,lamellarstructurecomposedofalternatinglayersof().

参考答案:

ferriteandcementite

Thedeterminationof()onspecimensisimportantforqualitycontrol.

参考答案:

grainsize

第七章测试

Digitaldesignandmanufacturemainlyincludes()

fordatatransmission.

参考答案:

Digitalmeans

Digitalistheprocessthatintegratedapplies

()totransformtraditionalcontentandtechnologysystem.

参考答案:

informationtechnology;

networktechnology;computertechnology

Digitizationisthroughouttheprocess

ofProductLifeCycle.（）

参考答案:

对

Manufacturingresources

just

include

technicalresources

and

materialresources.（）

参考答案:

错

Inthecompany-wideprogramlayer,wegenerallyuse

ManufacturingExecutionSystems.（）

参考答案:

错

Accordingtotheshapeandprocessingrequirements,programmercompilesmachiningprocessintomachiningprogram.（）

参考答案:

对

Industry4.0beganinthe18centurywiththeintroductionofmachinerymanufacturingequipment.