雨课堂学堂在线学堂云《机械制造技术基础（沈阳工程学院）》单元测试考核答案

第1题大批大量生产时，对操作工人的技术水平要求()。A较高B较低C没要求第2题下列那种生产类型广泛采用通用机床和通用夹具（）。A大量生产B批量生产C单件生产第3题机械加工工艺系统主要由那几部分组成（）。A机床B工件C刀具D夹具正确答案：ABCD第1题Whenproducinginlargequantities,thetechnicalleveloftheoperatorsisrequired（

）.AhigherBLowerCNorequirements第2题Whichofthefollowingproductiontypeswidelyuseuniversalmachinetoolsanduniversalfixtures.AMassproductionBbatchproductionCSinglepieceproduction第3题Whatarethemaincomponentsofthemachiningprocesssystem.AmachinetoolBworkpieceCtoolDfixture正确答案：ABCD测验第1题金属塑性成形基本规律包括()。A最小阻力定律;B再结晶;C回复;D冷变形强化;E体积不变规律。正确答案：ADE第2题适宜各种金属的铸造方法为()A砂型铸造;B压力铸造;C金属型铸造;D低压铸造。quiz第1题Thebasiclawsofmetalplasticforminginclude(

).AMinimumresistancelawBRecrystallizationCColddeformationstrengtheningDLawofvolumeinvariance正确答案：ACD第2题Thesuitablecastingmethodforvariousmetalsis(

)ASandcastingBPressurecastingCMetalmoldcastingDLowpressurecasting测验第1题下列叙述中对砂型铸造三箱造型方法的特点描述正确的有()。A是一种机器造型方法;B生产效率高于抛砂造型;C铸件的形状应是两头大中间小;D有且只有两个分型面;E常用于分型面为曲面的场合。正确答案：CD第2题分型砂的作用()A使分型面光洁B改善透气性C利于上下砂型顺利分型D修型参照面。quiz第1题Whichofthefollowingstatementscorrectlydescribethecharacteristicsofthesandcastingthreeboxmoldingmethod.AItisamachinemodelingmethodBTheshapeofthecastingshouldbelargeatbothendsandsmallinthemiddleCThereareonlytwopartingsurfacesDCommonlyusedinsituationswherethepartingsurfaceisacurvedsurface正确答案：BC第2题Whatisthefunctionofmoldingsand？AMakethepartingsurfacesmoothandcleanBImprovingbreathabilityCBeneficialforsmoothpartingofupperandlowersandmoldsDTrimmingreferencesurface测验第1题下列产品中适宜采用铸造成型的有()。A齿轮;B连杆;C机床床身;D减速器外壳E曲轴。正确答案：CD第2题铸件模样设计时必须考虑以下几个问题()A选择分型面B芯盒材料C起模斜度D浇注位置;E收缩余量。正确答案：ACDE第3题造成铸件外廓尺寸减小的原因是:()A液态收缩B凝固收缩C糊状收缩D固态收缩。quiz第1题Whichofthefollowingproductsissuitableforcasting.AgearBconnectingrodCMachinebedDReducerhousing正确答案：CD第2题Whendesigningcastingpatterns,thefollowingissuesmustbeconsidered.ASelectthepartingsurfaceBStartingangleofthemoldCPouringpositionDShrinkagemargin正确答案：ABCD第3题Whatisthereasonforthereductionintheouterdimensionsofcastings?ALiquidshrinkageBSolidificationshrinkageCMushyshrinkageDSolidstateshrinkage测验第1题下列零件适宜锻造成形的是()A电脑主机外壳;B机床主轴;C汽车变速箱体;D轿车外壳桁架。quiz第1题Whichofthefollowingpartsissuitableforforging?AComputerhostshellBMachinetoolspindleCAutomobilegearboxDCarshelltruss测验第1题终锻模镗,形状与锻件相适应,但尺寸比锻件()。A大;B小;C相等;D条件不足,无法判断。第2题锻造流线的产生使得材料的力学性能呈现方向性,沿着流线方向的()。A屈服强度最高;B抗拉强度最高;C疲劳强度最高D抗剪强度最高。quiz第1题Finalforgingdieboring,theshapeissuitablefortheforging,butthesizeis()thanthatoftheforging.AlargeBsmallCequalDInsufficientconditionstodetermine第2题Thegenerationofforgingstreamlinesresultsindirectionalmechanicalpropertiesofmaterials,alongthedirectionofthestreamlines(

).AThehighestyieldstrengthBThehighesttensilestrengthCThehighestfatiguestrengthDThehighestshearstrength章节测验第1题造型方法按砂箱特征可分为()A整模造型;B两箱造型C假箱造型D三箱造型;E刮板造型。正确答案：BD第2题造成铸件外廓尺寸减小的原因是:()A液态收缩B凝固收缩C糊状收缩D固态收缩。第3题终锻模镗,形状与锻件相适应,但尺寸比锻件()。A大;B小;C相等;D条件不足,无法判断。第4题锻造流线的产生使得材料的力学性能呈现方向性,沿着流线方向的()。A屈服强度最高;B抗拉强度最高;C疲劳强度最高D抗剪强度最高。第5题铸件要有“最小壁厚”限制,是因为薄壁件易生()A应力与变形;B缩孔与缩松;C冷隔与浇不足D气孔与砂眼。第6题普通车床床身浇注时导轨面应该()A朝上;B朝下;C侧立;D倾斜。第7题常用铸造方法中对铸件大小和质量限制最少的为()A砂型铸造;B熔模铸造;C压力铸造;D离心铸造。第8题应用量很大的拖拉机、农用车变速箱齿轮(材质20CrMnTi)的经济加工方法是()A压铸;B自由锻;C精密模锻;D冲压。第9题加大变形程度可使锻造流纹增加,并且用热处理方法()。A能够消除;B不能消除;C不能细化;D可以细化。第10题铸造造型中,起模后用力修型面的结果()A铸件光滑;B减少砂眼;C改善透气性;D增大分型面毛刺。Chapterquiz第1题Amongthefollowingoptions,theonethatdoesnotbelongtotheblankmakingdiechamberis(

).APreformeddiechamberBBendingdiechamberCDrawingdiechamberDRollextrusiondiechamber第2题The()moldingmethodshallbeadoptedforsingleandsmallbatchproductionofcastingswithtwopartingsurfaces.ATwoboxesBFalseboxCThreeboxesDPit第3题Massproductionofcastironpipehollowrotarycastingismostsuitableforproductionby(

)method.ASandcastingBInvestmentcastingCMetalmoldcastingDCentrifugalcasting第4题Whichofthefollowingprocessesdonotbelongtothebasicprocessoffreeforging(

)AUpsettingBElongateCPunchingDRounding第5题Freeforgingproductivityis

(

)thandieforging,andprecisionis

(

)thandieforging.AHigh,lowBLow,highCHigh,HighDLow,low第6题Amongthefollowingforgingprocesses,theforgingprocessthatconsumesthemostworkinghoursis(

)AUpsettingBElongateCPunchingDBend第7题Thereareanumberofspiralbladesonsteamturbines,whicharemadeofheat-resistantsteel.Theappropriatecastingmethodis(

)AMetalmoldcastingBSandcastingCInvestmentcastingDPressurecasting第8题Thehighestproductivityofcommoncastingmethodsis(

)ASandcastingBInvestmentcastingCPressurecastingDCentrifugalcasting第9题Thepropertiesofmoldingmaterialswilldirectlyaffectthequalityofcastings,andtheeasyoccurrenceofcracksisrelatedto(

)ADeformabilityB

BreathabilityCStrengthDFireresistance第10题Amongthecommoncastingmethods,theonewiththeleastrestrictionsonthesizeandqualityofcastingsis()ASandcastingBInvestmentcastingCPressurecastingDCentrifugalcasting测验第1题在立式钻床上钻孔,其主运动和进给运动()。A均由工件来完成B均由刀具来完成C分别由工件和刀具来完成D分别由刀具和工件来完成第2题在外圆磨床上磨削工件外圆表面,其主运动是()A砂轮的回转运动B工件的回转运动C砂轮的直线运动D工件的直线运动quiz第1题Drillingonaverticaldrillingmachine,itsmainmotionandfeedmotion(

).AAllarecompletedbytheworkpieceBAllarecompletedbycuttingtoolsCCompletedbyworkpieceandtoolrespectivelyDCompletedseparatelybycuttingtoolsandworkpieces第2题Themainmotionofgrindingtheoutersurfaceofaworkpieceonancylindricalgrinderis()ATherotationalmotionofgrindingwheelBTherotationalmotionoftheworkpieceCLinearmotionofgrindingwheelDLinearmotionoftheworkpiece第3题Inmechanicalprocessing,feedmotioncanbecompletedbythetoolorbytheworkpiece.第4题Inmechanicalprocessing,themainmotioncanonlyberotationalmotion.测验第1题扩孔钻扩孔时的背吃刀量(切削深度)等于()。A扩孔前孔的直径B扩孔钻直径的1/2C扩孔钻直径D扩孔钻直径与扩孔前孔径之差的1/2第2题径向进给时工作角度的变化（）。A工作前角减小，工作后角增大B工作前角增大，工作后角减小C工作前角和后角均增大D工作前角和后角均减小第3题与工件加工表面相互作用的是刀具的（）。A前刀面B基面C主后刀面D副后刀面quiz第1题Thebackfeed(cuttingdepth)ofthereamerduringdrillingisequalto(

).AThediameteroftheholebeforeexpansionB1/2ofthediameterofthereamerCdiameterofreamingdrillD1/2ofthedifferencebetweenthediameterofthereamingdrillandthediameterbeforereaming第2题Thevariationofworkingangleduringradialfeed.AReducethefrontworkangleandincreasethebackworkangleBIncreasethefrontworkangleanddecreasethebackworkangleCBoththefrontandbackcornersoftheworkincreaseDBoththefrontandbackcornersoftheworkdecrease第3题Whichsurfaceofthetoolinteractswiththemachiningsurfaceoftheworkpiece.ArakefaceBreferenceplaneCleadingflankDtrailingflank测验第1题切削热主要来源有（）。A刀具与切屑之间的摩擦B刀具与工件之间的摩擦C切削层材料的弹塑性变形D环境温度正确答案：ABC第2题在切削塑性材料时,切削区温度最高点是在()。A刀尖处B前刀面上靠近刀刃处C后刀面上靠近刀尖处D主刀刃处第3题切削用量对切削温度影响最大的是()。A切削速度B进给量C切削深度第4题规定刀具的磨钝标准是()。A沿工件径向刀具的磨损量B后刀面上平均磨损带的宽度VBC前刀面月牙洼的深度KTD前刀面月牙洼的宽度第5题切削用量中对切削力影响最大的是()。A切削速度B进给量C切削深度quiz第1题Themainsourcesofcuttingheatare(

).AFrictionbetweencuttingtoolsandchipsBFrictionbetweencuttingtoolsandworkpiecesCElastic-plasticdeformationofcuttinglayermaterialsDambienttemperature正确答案：ABC第2题Whencuttingplasticmaterials,thehighesttemperaturepointinthecuttingzoneis(

).AAtthetipoftheknifeBNearthebladeonthefrontbladesurfaceCNearthetipofthebladeonthebacksurfaceDAtthemainblade第3题Whichofthethreefactorsofcuttingparametershasthegreatestimpactoncuttingtemperature?AVcBapCf第4题Whatisthestandardforbluntingcuttingtools?AWearofradialcuttingtoolsalongtheworkpieceBThewidthoftheaveragewearbandontherearcuttingsurfaceVBCThedepthKTofthecrescentdepressiononthefrontcuttingsurfaceDThewidthofthecrescentdepressiononthefrontbladesurface第5题Whichofthethreefactorsofcuttingquantityhasthegreatestimpactoncuttingforce?AVcBfCap测验第1题主运动，进给运动和切削深度合称为切削用量三要素。第2题硬质合金刀具耐热性好，一般不用切削液。quiz第1题Themainmotion,feedmotion,andcuttingdeptharecollectivelyreferredtoasthethreeelementsofcuttingquantity.第2题Hardalloycuttingtoolshavegoodheatresistanceandgenerallydonotrequirecuttingfluid.章节测验第1题1【单选题】通过切削刃选定点,垂直于主运动方向的平面称为A切削平面B进给平面C基面D主剖面第2题2【单选题】在正交平面内度量的基面与前刀面的夹角为A前角B后角C主偏角D刃倾角第3题3【单选题】主偏角主切削刃与(

)之间的夹角A切削平面B基面C主运动方向D进给方向第4题4【单选题】W6Mo5Cr4V2是下面哪一类刀具材料?A合金工具钢B高速钢C硬质合金D陶瓷刀具第5题5【单选题】下列哪种刀具材料的常温硬度最高?()A硬质合金B陶瓷C人造金刚石D立方氮化硼第6题6【单选题】与工件已加工表面相对的刀具表面是(

)A前面B后面C基面D副后面第7题7【单选题】能够反映前刀面倾斜程度的刀具标注角度为A前角B后角C主偏角D刃倾角第8题8【单选题】能够反映切削刃相对于基面倾斜程度的刀具标注角度为()A前角B后角C主偏角D刃倾角第9题9【单选题】外圆车削时,如果刀具安装得使刀尖高于工件旋转中心,则刀具的工作前角与标注前角相比会()A增大B减小C不变D不定第10题10【单选题】普通高速钢的常温硬度约可达()A40~45HRCB50~60HRCC62~70HRCD70~80HRCChapterquiz第1题Theangleincludedbetweenthemajorcuttingedge

andreferenceplaneincutting

planeis

.Arakeangle

BclearanceangleCcuttingedgeangleDcuttingedgeinclinationangle第2题Theplanewhichpassesthroughadesignatedpointonthecuttingedgeandisperpendiculartothedirectionofprimarymotioniscalled

.AcuttingedgeplaneBfeedplaneCreferenceplaneDorthogonalplane第3题Thenumberofmainmotionmaybe

.AOnlyoneBtwo

Cthree

Dfour第4题Asforthe

influenceofmachiningvariablesontoollife,theinfluencingdegreefromlargetosmallis

.Avc→ap→f

Bvc→f→ap

Cf→ap→vc

Df→vc→ap第5题Ofthethreecomponentsofcuttingforce,consumesthelargestpower.AfeedforceBradialcuttingforceCmaincuttingforceDuncertain

第6题Whichofthefollowingarethepropertiesoftoolmaterials?AhighhardnessBhighwear-resistanceCsufficientstrengthandtoughnessDhighheatresistance正确答案：ABCD第7题Whencuttingplasticmetalundertheconditionsofhighcuttingspeed,smallcuttingthicknessandlargetoolrakeangle,itisofteneasytoformwhichofthefollowingchips?AribbonchipBcrackedchipCunitchipDsplinteringchip第8题Thethirddeformationzone:themachinedsurfaceisdeformedbytheextrusionandfrictionoftheflank,resultinginthewearoftheflankandthemachinedsurface(

)andresidualstress.AWorkhardeningBplasticdeformationCBUE第9题Theseconddeformationzoneisthemaincauseof(

).ArakefacewearBflankwearCBUEDWorkhardening正确答案：AC第10题Thefirstdeformationzone,namelythesheardeformationzone,ismainly(

),andthecuttingdeformationhasgreatcuttingresistancetothetool.AelasticdeformationBplasticdeformationCfractureDFrictionbetweenchipandrakeface测验第1题车床可以实现以下哪些特征表面的加工（）。A外圆B平面C内孔D螺纹正确答案：ABCD第2题外圆表面常用加工方法有（）。A车削B铣削C刨削D磨削正确答案：ADquiz第1题Whichofthefollowingcharacteristicsurfacescanalatheachieve.AOutercircleBplaneCInnerholeDscrewthread正确答案：ABCD第2题Thecommonlyusedprocessingmethodsforoutercircularsurfacesare().AturningBmillingCPlaningDgrinding正确答案：AD测验第1题钻孔和镗孔描述正确的是（）A镗孔比钻孔精度高B钻头直径决定了钻孔尺寸大小C镗孔之前必须要先有孔D孔的直径较大时不能一次钻孔成正确答案：ABCD第2题孔加工常用刀具有哪些？A钻头B铰刀C镗刀正确答案：ABCquiz第1题Whatarethecorrectdescriptionsofdrillingandboring？ABoringholeshavehigheraccuracythandrillingholesBThediameterofthedrillbitdeterminesthesizeofthedrillingholeCBeforeboring,theremustbeaholefirstDWhenthediameteroftheholeislarge,itcannotbedrilledatonce正确答案：ABCD第2题Whatarethecommonlyusedtoolsforholemachining?ADrillbitBReamerCBoringcutter正确答案：ABC测验第1题平面常用加工方法有（）。A车削B铣削C刨削D磨削正确答案：ABCDquiz第1题Thecommonlyusedmachiningmethodsforflatsurfacesare(

).AturningBmillingCPlaningDgrinding正确答案：ABCD章节测验第1题钻孔和镗孔描述正确的是（）A镗孔比钻孔精度高B钻头直径决定了钻孔尺寸大小C镗孔之前必须要先有孔D孔的直径较大时不能一次钻孔成正确答案：ABCD第2题车床可以实现以下哪些特征表面的加工（）。A外圆B平面C内孔D螺纹正确答案：ABCD第3题CA6140中，40的含义是（）。A最大车削直径40mmB最大车削直径400mmC工作台最大长度40mmD工作台最大长度400mm第4题拉孔加工描述正确的是(（

）。A生产效率高B可以同时完成孔的粗精加工C刀具结构复杂D只能拉削通孔正确答案：ABCD第5题平面常用加工方法有（）。A车削B铣削C刨削D磨削正确答案：ABCD第6题外圆表面常用加工方法有（）。A车削B铣削C刨削D磨削正确答案：AD第7题在大型铸件上加工三个具有位置精度要求的孔，应采用(

)机床。A钻床B车床C铣床D镗床第8题砂轮的硬度指的是（）。A砂轮磨料的硬度B砂轮磨料的密度C砂轮组织的致密性D结合剂的粘接强度第9题钻、扩、铰三种孔加工方法中，（

）方法加工孔的精度最高。A钻B扩C铰第10题磨削硬材料要用（）砂轮。A硬B软C软硬均可Chapterquiz第1题Thecorrectdescriptionoftheplaningprocessis(

)AGoodversatilityBLowproductionefficiencyCSuitableformachininglongandnarrowplanes,grooves,andguiderailsurfacesDImpact正确答案：ABDC第2题Broachingrange()AThrough-holeBplaneCFormedsurfaceDBlindhole正确答案：ABC第3题Whatmachinetoolshouldbeusedtoprocessthreeholeswithpositionalaccuracyrequirementsonlargecastings.ADrillingmachinesBlathesCmillingmachinesDboringmachines第4题Thehardnessofagrindingwheelrefersto(

).AThehardnessofgrindingwheelabrasivesBThedensityofgrindingwheelabrasivesCThecompactnessofthegrindingwheelstructureDThebondingstrengthofthebinder第5题Whichofthefollowingcharacteristicsurfacescanalatheachieve.AOutercircleBflatsurfaceCinnerholeDthread正确答案：ABCD第6题InCA6140,themeaningof40is(

).AMaximumturningdiameter40mmBMaximumturningdiameter400mmCThemaximumlengthoftheworkbenchis40mmDThemaximumlengthoftheworkbenchis400mm第7题Thecommonlyusedmachiningmethodsforflatsurfacesare(

).AturningBmillingCplaningDgrinding正确答案：ABCD第8题Thecommonlyusedprocessingmethodsforoutercircularsurfacesare(

).AturningBmillingCplaningDgrinding正确答案：AD第9题Planingcanbeprocessed(

)AflatsurfacesBgroovesCoutercirclesDinnerholes正确答案：AB第10题Grindingcanprocessmaterialswithhighhardnessbecause(

)AHighabrasivehardnessBHighhardnessofgrindingwheelCGrindingwheelshaveselfsharpeningpropertiesDThegrindingwheelistightlyorganized正确答案：AC测验第1题夹具体应满足（）结构特点。A足够的强度和刚度B便于排削C在机床上安装稳定可靠D结构工艺性好正确答案：ABCDquiz第1题Theclampshouldmeetthestructuralcharacteristicsof(

).ASufficientstrengthandstiffnessBEasytoremovedebrisCStableandreliableinstallationonmachinetoolsDGoodstructuralcraftsmanship正确答案：ABCD第2题Whenusingfixturestoclampworkpieces,workershavehightechnicalrequirements.测验第1题过定位有时也是可以使用的。()第2题定位支承点不超过六个,就不会出现过定位。()第3题工件在机床上占有正确的位置就是装夹()。quiz第1题Accordingtotheprincipleofsixpointpositioning,aslongassixsupportpointsareusedtosupporttheworkpiece,thesixdegreesoffreedomoftheworkpiececanbelimited.第2题Thecorrectpositionoftheworkpieceonthemachinetooliscalledclamping.第3题Iftherearenomorethansixpositioningsupportpoints,therewillbenooverpositioning.第4题Overpositioningcanalsobeusedattimes.测验第1题辅助支承在工件定位中（）。A起定位作用B不起定位作用C根据情况确定D不确定第2题一面两销的组合定位方式，限制（）个自由度。A3B4C5D6第3题浮动支撑一般限制工件几个自由度（）。A0B1C2D3第4题锥销作为定位元件，限制（）个自由度。A1B2C3D4第5题工件以圆孔定位，常用的定位元件是（）。A定位销B定位套C心轴DV型块正确答案：ACquiz第1题Auxiliarysupportinworkpiecepositioning.

APlaysapositioningroleBDoesnothaveapositioningeffectCDeterminebasedonthesituationD不确定第2题Thecombinationpositioningmethodofonesideandtwosaleslimits(

)degreesoffreedom.A3B4C5D6第3题Floatingsupportsgenerallylimitthenumberofdegreesoffreedomoftheworkpiece.A0B1C2D3第4题Thetaperedpinservesasapositioningelement,limiting(

)degreesoffreedom.A1B2C3D4第5题Theworkpieceispositionedwithacircularhole,andthecommonlyusedpositioningcomponentsare(

).APositioningpinBPositioningsleeveCCardinalaxisDV-shapedblock正确答案：AC测验第1题基准不重合误差的大小主要与哪种因素有关?()A本工序要保证的尺寸大小B本工序要保证的尺寸精度C工序基准与定位基准间的位置误差D定位元件和定位基准本身的制造精度第2题用心轴与工件定位孔采用有间隙配合时,无论心轴水平安装还是垂直安装,所产生的基准位移误差都是相同的。()第3题工件以平面定位时,不存在基准位移误差。()quiz第1题Theworkpieceispositionedonthesurfaceofacylindricalhole,andthereisnobenchmarkdisplacementerrorwhenthecircularholeisininterferencefitwiththepositioningaxis.第2题Whentheworkpieceispositionedinaplane,thereisnobenchmarkdisplacementerror.第3题WhentheworkpieceispositionedwithaV-block,thereisnobenchmarkdisplacementerror.第4题Usingdesignbenchmarksaspositioningbenchmarkscanavoiderrorscausedbynonoverlappingbenchmarks.第5题Whatfactorismainlyrelatedtothemagnitudeofbenchmarknoncoincidenceerror?AThesizetobeensuredinthisprocessBThedimensionalaccuracytobeguaranteedinthisprocessCPositionerrorbetweenprocessreferenceandpositioningreferenceDThemanufacturingaccuracyofpositioningcomponentsandpositioningbenchmarksthemselves测验第1题夹紧力的着力点的位置应位于()。A限位支承面内B工件刚度较大处C远离加工点D接近加工部位正确答案：ABD第2题夹紧力的作用方向的选择，应考虑到下列问题：()。A夹紧力应背向定位基面B主要夹紧力应朝向主要限位基面C夹紧力最好与工件重力、切削力同向D夹紧力应与重力、切削力方向垂直正确答案：BC第3题夹具设计中夹紧装置夹紧力的作用点应尽量()工件要加工的部位。A远离B靠近C远、近皆可quiz第1题Thepositionofthepointofapplicationofclampingforceshouldbelocatedat(

).AWithinthelimitedsupportsurfaceBPlaceswithhighworkpiecestiffnessCStayawayfrommachiningpointsDApproachingtheprocessingarea正确答案：ABD第2题Theselectionofthedirectionofclampingforceshouldconsiderthefollowingissues:(

).ATheclampingforceshouldbefacingawayfromthepositioningbaseplaneBThemainclampingforceshouldbeorientedtowardsthemainlimitbaseplaneCTheclampingforceshouldpreferablybeinthesamedirectionastheworkpiecegravityandcuttingforceDTheclampingforceshouldbeperpendiculartothedirectionofgravityandcuttingforce正确答案：BC第3题Theclampingforceoftheclampingdeviceinfixturedesignshouldbeappliedas（

）aspossibletothepartoftheworkpiecetobeprocessed.AfarBnearCBothfarandneararepossible测验第1题斜楔夹紧机构的夹紧行程很小。()第2题螺旋夹紧机构,夹紧可靠,自锁性能好,夹紧力和夹紧行程大。()第3题铰链夹紧机构具有自锁性能。()quiz第1题Theobliquewedgeclampingmechanismhasthecharacteristicofchangingthedirectionofclampingforce.第2题Thecirculareccentricwheelclampingmechanismhasalargeclampingstrokeandstrongself-lockingreliability.第3题Thehingeclampingmechanismhasself-lockingperformance.第4题Spiralclampingmechanism,reliableclamping,goodself-lockingperformance,largeclampingforceandclampingstroke.章节测验第1题夹具体应满足（）结构特点。A足够的强度和刚度B便于排削C在机床上安装稳定可靠D结构工艺性好正确答案：ABCD第2题造成定位误差的原因是（）A定位基准与工序基准不重合B定位元件的加工误差C定位基准与限位基准不重合D定位元件的安装误差正确答案：AC第3题夹紧力的作用方向的选择，应考虑到下列问题：()。A夹紧力应背向定位基面B主要夹紧力应朝向主要限位基面C夹紧力最好与工件重力、切削力同向D夹紧力应与重力、切削力方向垂直正确答案：BC第4题长心轴作为定位元件，限制（）个自由度。A1B2C3D4第5题工件以圆孔定位，常用的定位元件是（）。A定位销B定位套C心轴DV型块正确答案：AC第6题使用夹具装夹工件时,对工人的技术要求较高()。第7题工件夹紧了也就定位了()。第8题夹具只是用来对加工对象起固定作用的()。第9题用心轴与工件定位孔采用有间隙配合时,无论心轴水平安装还是垂直安装,所产生的基准位移误差都是相同的。()第10题工件以V型块定位时,不存在基准位移误差。()Chapterquiz第1题Theclampingdeviceinthemachinetoolfixtureshouldmeetthefollowingbasicrequirements.AAccurateclampingactionBQuickclampingactionCTheclampingforceshouldbeaslargeaspossibleDThestructureoftheclampingdeviceshouldbeassimpleaspossible

正确答案：ABD第2题Whentheclampingforce,cuttingforce,andworkpiecegravityareinthesamedirection,therequiredclampingforceduringthemachiningprocessisminimized.(

)第3题Thepositionofthepointofapplicationofclampingforceshouldbelocatedat(

).AWithinthelimitedsupportsurfaceBPlaceswithhighworkpiecestiffnessCStayawayfrommachiningpointsDApproachingtheprocessingarea正确答案：ABD第4题Theselectionofthedirectionofclampingforceshouldconsiderthefollowingissues:(

).ATheclampingforceshouldbefacingawayfromthepositioningbaseplaneBThemainclampingforceshouldbeorientedtowardsthemainlimitbaseplaneCTheclampingforceshouldpreferablybeinthesamedirectionastheworkpiecegravityandcuttingforceDTheclampingforceshouldbeperpendiculartothedirectionofgravityandcuttingforce

正确答案：BC第5题Theintermediateforcetransmissionmechanismintheclampingdevicecanchangethedirectionandmagnitudeoftheclampingforce.(

)第6题WhenusingthecylindricalsurfaceoutsidetheworkpieceasthepositioningbaseandpositioningontheV-shapedblock,thepositioningerrorisminimizedwhenthemachiningdimensionismarkedwiththelowergeneratrixoftheoutercircleastheprocessreference.第7题Theworkpieceispositionedonthesurfaceofacylindricalhole,andthereisnobenchmarknoncoincidenceerrorwhenthecircularholeisininterferencefitwiththepositioningaxis.(

)第8题Whentheworkpieceispositionedinaplane,thereisnobenchmarkdisplacementerror.(

)第9题Whatfactorsaremainlyrelatedtothemagnitudeofbenchmarknoncoincidenceerror?(

)AThesizetobeensuredinthisprocessBThedimensionalaccuracytobeguaranteedinthisprocessCPositionerrorbetweenprocessreferenceandpositioningreferenceDThemanufacturingaccuracyofpositioningcomponentsandpositioningbenchmarksthemselves

第10题

Thereasonforthepositioningerroris(

).AThepositioningbenchmarkdoesnotcoincidewiththeprocessbenchmarkBProcessingerrorofpositioningcomponentsCThepositioningreferenceandlimitreferencedonotcoincideDInstallationerrorofpositioningcomponents正确答案：AC测验第1题机械加工工艺系统包括（）A刀具B工件C夹具D机床正确答案：ABCD第2题同一工步要求(

）不变。A加工表面B切削刀具C切削深度D进给量正确答案：ABD第3题构成工序的要素之一是()。A同一台机床B同一套夹具C同一把刀具D同一个加工表面quiz第1题Themechanicalprocessingtechnologysystemincludes(

).AtoolBworkpieceCfixtureDmachinetool正确答案：ABCD第2题Therequirementsforthesameworkstepremain（

）unchanged.AMachinedsurfaceBCuttingtoolsCCuttingdepthDFeedrate正确答案：BAD第3题Oneoftheelementsthatmakeupaprocessis(

).ASamemachinetoolBSamesetoffixturesCSamecuttingtoolDSamemachiningsurface第4题Themachiningprocessiscomposedofaseriesofworkstations测验第1题在加工工序中用作工件定位的基准称为工序基准。()quiz第1题Thereferenceusedforworkpiecepositioninginmachiningprocessesiscalledtheprocessreference.测验第1题选择粗基准最主要的原则是（）。A保证相互位置关系原则B保证加工余量均匀分配原则C基准重合原则D自为基准原则正确答案：AB第2题粗基准一般不允许重复使用。()第3题选择粗基准时,考虑的重点是保证各加工各表面要有足够的加工余量。()quiz第1题Roughbenchmarksaregenerallynotallowedtobereused.第2题Whenroughmachining,importantsurfacesshouldbeusedastheroughreferenceformachiningfirst.第3题Themainprincipleforselectingacoarsebenchmarkare(

).ATheprincipleofensuringmutualpositionalrelationshipsBTheprincipleofensuringuniformdistributionofmachiningallowanceCPrincipleofbenchmarkoverlapDSelfbenchmarkingprinciple正确答案：AB测验第1题选择精基准的主要原则是（）。A基准重合原则B基准统一原则C余量均匀分配原则D不能重复使用原则正确答案：AB第2题采用自为基准原则,不但能提高表面质量,还能校正位置精度。()第3题遵守“基准统一”原则,可以避免产生基准不重合误差。()quiz第1题Adoptingtheprincipleofselfreferencenotonlyimprovessurfacequalitybutalsocorrectspositionalaccuracy.第2题Adheringtotheprincipleof"unifiedbenchmark"canavoidtheoccurrenceofbenchmarknoncoincidenceerrors.第3题Themainprincipleforselectingaprecisebenchmarkare(

).APrincipleofbenchmarkoverlapBPrincipleofUnifiedBenchmarkingCPrincipleofuniformdistributionofsurplusDPrincipleofnonreusableuse正确答案：AB测验第1题划分加工阶段的目的是（）。A有利于保证加工质量B可以合理使用机床设备C能够及早发现毛坯缺陷D便于插入必要的热处理工序正确答案：ABCD第2题经济加工精度是在()条件下所能保证的加工精度和表面粗糙度。A最不利B最佳状态C最小成本D正常加工quiz第1题Thepurposeofdividingprocessingstagesincludes(

).ABeneficialforensuringprocessingqualityBReasonableuseofmachinetoolsandequipmentCBeingabletodetectdefectsinrawmaterialsearlyonDEasytoinsertnecessaryheattreatmentprocesses正确答案：ABCD第2题Economicprocessingaccuracyreferstothemachiningaccuracyandsurfaceroughnessthatcanbeguaranteedunder(

)conditions.AMostunfavorableBBeststateCMinimumcostDNormalprocessing测验第1题对于刚性差且精度高的零件加工，为保证加工质量，工序应适当（）。A集中B分散第2题为改善材料切削性能而进行的热处理工序（如退火、正火等），通常安排在（

）进行。A切削加工之前B磨削加工之前C切削加工之后D粗加工后、精加工前quiz第1题Formachiningpartswithpoorrigidityandhighprecision,inordertoensuremachiningquality,theprocessshouldbeappropriate(

).AconcentrateBdisperse第2题Theheattreatmentprocess(suchasannealing,normalizing,etc.)carriedouttoimprovethecuttingperformanceofmaterialsisusuallyarrangedin(

).ABeforecuttingBBeforegrindingCAftercuttingprocessingDAfterroughmachiningandbeforeprecisionmachining第3题Forpartswithholesontheplane,boththeplaneandtheholeneedtobemachined.Inthiscase,theholeshouldbemachinedfirstbeforetheplane.测验第1题最后一道工序的工序尺寸及公差等于零件的设计尺寸及公差。()第2题工序分散则使用的设备数量多,生产准备工作量大。()quiz第1题Thedimensionsandtolerancesofthefinalprocessareequaltothedesigndimensionsandtolerancesofthepart.测验第1题在工艺尺寸链中，（）的尺寸公差最大。A组成环B封闭环C增环D减环第2题尺寸链中，尺寸的变动引起封闭环同向变动的是（）。A组成环B封闭环C增环D减环第3题在工艺尺寸链中，间接保证的尺寸为（）A组成环B封闭环C增环D减环第4题工艺尺寸链的两个特征为（）。A精度高B封闭性C关联性D结构好正确答案：BCquiz第1题Intheprocessdimensionchain,(

)hasthelargestdimensionaltolerance.AComponentlinkBClosedlinkCIncreasinglinkDDecreasinglink第2题Intheprocessdimensionchain,theindirectlyguaranteeddimensionis(

)AComponentlinkBClosedlinkCIncreasinglinkDDecreasinglink第3题Thetwocharacteristicsoftheprocessdimensionchainare(

).AHighaccuracyBClosureCRelevanceDGoodstructure正确答案：BC第4题The"shortestprinciple"forestablishingdimensionalchainsrequirestheminimumnumberofcomponentlinks.()章节测验第1题箱体采用“一面两孔”作为精基准时复合（）原则。A基准重合B基准统一C互为基准D自为基准第2题采用统一精基准原则的好处有()。A有利于保证被加工面的形状精度B有利于保证被加工面之间的位置精度C可以简化夹具设计与制造D可以减小加工余量正确答案：BC第3题精密齿轮高频淬火后需磨削齿面和内孔,以提高齿面和内孔的位置精度,常采用以下原则来保证()。A基准重合B基准统一C自为基准D互为基准第4题提高封闭环的精度措施有（）。A减小组成环的公差B减少组成环的环数C降低组成环的精度D增大组成环的环数正确答案：AB第5题基准重合原则是选用零件的（）基准作为定位基准。A设计B工序C装配D测量第6题机械加工工艺规程的作用有（）。A生产准备工作的主要依据B指导生产的主要技术文件C新建工厂和车间的原始资料正确答案：ABC第7题在工艺尺寸链中，间接保证的尺寸为（）A组成环B封闭环C增环D减环第8题基准统一原则有利于保证各加工表面之间的相互位置要求。()第9题在工艺尺寸链中,封闭环只能有一个。()第10题最后一道工序的工序尺寸及公差等于零件的设计尺寸及公差。()Chapterquiz第1题Whentheextremevaluealgorithmisusedforadimensionchain,thelowerdeviationofitsclosedlinkisequalto().AThesumoftheupperdeviationsoftheincreasingringminusthesumoftheupperdeviationsofthedecreasingringBThesumoftheupperdeviationsoftheincreasingringminusthesumofthelowerdeviationsofthedecreasingringCThesumofthelowerdeviationsoftheincreasingringminusthesumoftheupperdeviationsofthedecreasingringDSubtractthesumofthelowerdeviationsofthedecreasingringfromthesumofthelowerdeviationsoftheincreasingring第2题Usingcompositestepscanimproveproductionefficiency.第3题Inamachiningprocess,aworkpiececanonlyoccupyonestation.第4题Usingmultistationmachiningcanimproveproductivityandensurethemutualpositionaccuracybetweentheprocessedsurfaces.第5题Themachiningprocessconsistsofaseriesofworkingposition.第6题Thepurposeofdividingprocessingstagesincludes(

).ABeneficialforensuringprocessingqualityBReasonableuseofmachinetoolsandequipmentCBeingabletodetectdefectsinrawmaterialsearlyonDEasytoinsertnecessaryheattre