互换性与技术测量圆柱结合复习题Review of interchangeability and measurement of cylinders.docx

互换性与技术测量圆柱结合复习题Review of interchangeability and measurement of cylinders.docx

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互换性与技术测量圆柱结合复习题Reviewofinterchangeabilityandmeasurementofcylinders

互换性与技术测量圆柱结合复习题（Reviewofinterchangeabilityandmeasurementofcylinders）

Interchangeabilityofcylindricalexercises

I.judgmentquestions.

1tolerancescanbesaidtoallowmaximumdeviationofpartsize.（）

2,thebasicsizeofdifferentparts,aslongastheirtolerancesthesamevalue,itcanbeexplainedthattheyrequirethesameaccuracy.（）

3,thenationalstandardstipulatesthattheholerefersonlytothecylindricalinnersurface.（）

4,drawingmarking200-0.021mmdiametershaft,processingthebasicdimensionsofthemoreaccuratenear.（）

5,thebasicdeviationoftheholeisthelowerdeviation,thebasicdeviationoftheaxis,thatis,theupperdeviation.（）

6.Thesizeofaholeis20-0.046-0.067,andtheactualsizeis19.962mm.Thisholecanbejudgedtobequalified.（）

7,noinjectiontolerancesize,thatisnotolerancerequirementsforthesize.（）

8,thebasicdeviationdeterminesthelocationofthetolerancezone.（）

9.Theallowablevariationofthegeometricparametersofapartiscalledgeometrictolerance.（）

10thebasicdeviationreferstothebasicsizeofthesamecombinationoftheholeandtheaxisoftherelationshipbetweenthetolerancezone.（）

11,drawingmarkingphi30+0.0330mmhole,candeterminetheholeholeBerezovskybenchmarksystem.（）

12,thetransitionfitmayhavegapsormaybeexcessive,sothetransitionfitmaybeagapfit,oritmaybeinterferencefit.（）

13,thesmallerthevalueofthetolerance,thehigherthetolerancegradeoftheholesandshaftsthatcooperatewitheachother.（）

14,theholeandshaftfitwitha40H9/n9,canbejudgedtobeatransitionfit.（）

15,H7/g6ismoreimportantthanH7/s6.（）

16,therelativepositionoftheholeandshafttolerancezonesreflectsthedegreeofeaseofprocessing.（）

17,theminimumclearanceofzerocoordinationandminimuminterferenceequalzerocoordination,thetwoareessentiallythesame.（）

18,thebaseshaftsystemmatchinghole,thelowerdeviationmustbelessthanzero.（）

19,fromthemanufacturingpointofview,theholesystemischaracterizedbythefirstholeprocessing,thebasicshaftsystemischaracterizedbythefirstprocessingshaft.（）

20,theworktemperatureishigherthantheshafttemperature,thedesignshouldmeettheneedtoincreasetheamountofinterference.（）

21,thebasicdeviationfromatoh,andthebaseholegapfit,inwhichhcoordinationmostloose.（）

22,therelativemovementshouldbeusedinconjunctionwiththegap,norelativemovementofthecoordination,areselectedinterferencefit.（）

23,thesizeofthetoleranceisequaltothesumofthetoleranceoftheholeshaft.（）

24,theassemblyaccuracyofhighcoordination,ifforthetransitionfit,itsvalueshouldbereduced;ifthegapfit,itsvalueshouldbeincreased.（）

25,thebasicdeviationoftheaxis,fromatohfortheupperdeviationofES,andisnegativeorzero.（）

26.Thebasicdeviationisusedtodeterminetheupperorlowerdeviationofthetolerancebandrelativetothezerolineposition.

（）

27,thehigherthemachiningaccuracyofholesandshafts,thehigherthematchingaccuracy.（）

28.Theactualsizeofthepartisthetruesizeofthepart.（）

29,inordertomeettherequirementsoftheuseofcircumstances,weshouldtrytousealowertoleranceleveloftolerance.（）

30,clearancefit,holetolerancezonemustbeabovethezeroline,theaxismustbeinthelineoftolerancebelowthezeroline.（）

31,thesizedeviationcanbepositiveornegative,or0.（）

32,interferencefitisacannotmoveeachother,itisnoteasytodisassemblyandcoordination.（）

Two,multiple-choicequestions.

1,thefollowingdiscussioniscorrect______.

A.becauseofthemassproduction,soonlypartinterchangeability,becauseoftheinterchangeabilityofproductionbeforemakingtolerancesystem

B.partswithinterchangeability,theirgeometricparametersshouldbeabsolutelyaccurate

TheassemblyoftheC.iscalledinterchangeabilitywhenitisassembledwithouthavingtobeselected

D.apartisadjustedandthenassembled,qualified,alsoknownasinterchangeableproduction

E.isnotcompletelyinterchangeable,willnotreducetheuseperformance,andtheeconomicbenefitisbetter

2,thetoleranceleveloftherightis______.

A.tolerancelevelishigh,thentolerancebandwidth

B.shoulduselowtolerancegradeasmuchaspossibleunderthepremiseofmeetingtheapplicationrequirements

ThedegreeoftoleranceofC.affectsthesizeoftolerancezoneanddeterminestheaccuracyoffit

D.holesandshaftsfittogetheratthesamelevel

E.standard,standardtoleranceisdividedinto18grades

3,witheachofthefollowinggroups,withthesamenaturewith______.

A.,Phi30H7/f6andphi30H8/p7,B.,Phi30P8/h7andphi30H8/p7,C.,Phi30M8/h7a