互换性与技术测量2021学习通课后章节答案期末考试题库2023年

互换性与技术测量2021学习通课后章节答案期末考试题库2023年Inatransitionfit,whatistherelationshipofshaftdiameterdandholediameterD?.译:过渡配合中的轴径d与孔径D的关系是怎样的?

参考答案:

unknown(不一定)

Whenamicrometeristobestored,thespacebetweenitsanvilsshouldbe(

).译:千分尺存放时,两测砧间距应该怎样?

参考答案:

separatedwithgap(留有间隔)

Inaninterferencefit,whatistherelationshipofshaftdiameterdandholediameterD?.译:过盈配合中的轴径d与孔径D的关系是怎样的?

参考答案:

d>D

The

drawing

requires

the

accuracy

of

angle

α

between

(

)

.译:该图约束哪两个要素的夹角α?

参考答案:

the

inclined

surface

to

the

axis

of

Φd

shaft(斜面与Φd的轴线)

Arandomlychosencomponentassemblesproperlyandsatisfiesfunctionalitywithoutadditionalfitting.Whatabilitydoesithave?译:随机选取的零件无需额外加工便能顺利装配且满足功能要求,则该零件具有(

)

参考答案:

interchangeability

Thesmallerstandarddeviationmeansthebetter(

)?译:标准差越小表明下面哪项水平越高?

参考答案:

precision

Tossingacoinfor100times,theheadlikelyoccurs50times.Itobeysthelawof(

).译：一枚硬币抛100次，正面出现大约50次。这个现象反映了什么规律？

参考答案:

Normaldistribution（正态分布）

Whatinstrumentshouldbeusedtozeroanindicatingmicrometerthatranges25-50mm?译:对量程25-50mm的杠杆千分尺调零要用到什么器具?

参考答案:

Gaugeblocks(量块)

The

drawing

requires

concentricity

of

(

).

译：该图约束哪两个要素的同轴度？

参考答案:

Axis

of

Φd

shaft

and

ΦD

shaft（Φd与

ΦD的轴线）

Gaussiandistributionisknownas(

).译:高斯分布又称作什么?

参考答案:

normaldistribution(正态分布)

Metrologyisappliedin(

).译:技术测量有哪些应用?

参考答案:

alloftheabove(全部选项均正确)

WhichstatementisFALSEaboutfitΦ20H7/f6?译:关于配合尺寸Φ20H7/f6,以下哪项说法是错误的?

参考答案:

Theholeandtheshafthavethesametolerancegrade(孔与轴的tolerance等级相同)

What

is

the

lower

deviation

of

the

dimension?

译:图示轴的尺寸下偏差是多少?

参考答案:

-0.041

What'sthemeaningof“metrology”?

参考答案:

scienceofmeasurement

Whichwordistodescribehowclosethemeasuredvaluesaretoeachother?译:哪个单词用来表述测量值一致性的程度?

参考答案:

precision

WhichstatementisTRUEaboutfitΦ20H7/f6?译:关于配合尺寸Φ20H7/f6,以下哪项说法是正确的?

参考答案:

Boththeholeandtheshafthaveabasicsizeof20(孔与轴的基本尺寸均为20)

What

feature

does

the

yellow

coloured

symbol

control?

译:黄色背景的符号控制哪个要素?

参考答案:

The

slot

is

symmetric

about

the

axis(开槽部分关于轴线对称)

AdimensionexpressedasΦ20H7isusuallyfor(

).译:Φ20H7这样的标注通常用于什么场合?

参考答案:

Massmanufacturing(大批量生产)

Whatisthepurposeofusingpreferablefits?.译:为何要使用优先配合?

参考答案:

alloftheoptions(全部选项均正确)

Whattypeoffitshouldbeconsideredasafirstchoicewhenwedesignanassembly?译:设计一处装配时,首先考虑哪种配合?

参考答案:

Preferablefit(优先配合)

What

is

the

maximum

allowable

straightness

error

of

the

hole?.

译:该孔所允许的最大直线度误差是多少?

参考答案:

0.06

Ifyoutossacoinfor100times,howmanytimesdoesheadlikelytooccur?.译:一枚硬币抛100次,正面出现几次的可能性最大?

参考答案:

50times

(

)mustbeconsideredwhendesignaproductoraprocess.译:设计和制造产品必须考虑的因素是什么?

参考答案:

Bothfunctionalityandeconomics

Whatisthedeviationlettersymboloftheshaftisinahole-basissystem?译:基孔制配合中,轴的偏差代号是什么?

参考答案:

Dependsonrequirement(视需要而定)

Whatisthedeviationlettersymboloftheholeisinashaft-basissystem?译:基轴制配合中,孔的偏差代号是什么?

参考答案:

Dependsonrequirement(视需要而定)

GD&Tisusedtocontrol(

)ofanobject.译:GD&T控制工件的什么参数?

参考答案:

contour(轮廓)

Componentsshouldbe(

)forselectiveassembly.译:有限互换要求下,零件装配前需要经过什么流程?

参考答案:

grouped

Which

is

NOT

a

SI

basic

units?

译:以下哪个不是国际单位制的基本单位?

参考答案:

kW

What

does

letter

“A”

mean?

参考答案:

Datum(基准)

Whichoneisaformtolerance?译:哪一项是形状公差?

参考答案:

Circularity(圆度)

Samplingplanisusuallydesigned(

).译:产品抽检方案通常是怎样制定的?

参考答案:

bycharts(查表)

Whichoneisalocationtolerance?译:哪一项是定位公差?

参考答案:

Symmetry(对称度)

Comparetofullinspection,whatisthedisadvantageofsampling?译:与全检相比,产品抽检有什么缺点?

参考答案:

Rejectinggoodproducts(拒收合格产品)

Whichoneisanorientationtolerance?译:哪一项是定向公差?

参考答案:

Perpendicularity(垂直度)

What'stheusageoftoleranceindicatorsonanindicatingmicrometer?译:杠杆千分尺表盘上的公差指示器有什么作用?

参考答案:

Fastcomparativemeasurement(快速相对测量)

HowmanyitemsdoesGD&Tconsistof?译:GD&T共有几个项目?

参考答案:

14

Whatistheadvantageofselectiveassembly？译：有限互换有何优点?

参考答案:

Bettereconomics(经济性更好)

Measuringerrorisdefinedas(

).译:如何定义测量误差?

参考答案:

Measuredvalue–Truevalue

What

is

the

dimension

at

LMC?

译:图示轴在LMC状态下的尺寸是多少?

参考答案:

19.959

Theactivityofevaluatingproductqualityisknownas(

).译:评估产品质量的活动称作什么?

参考答案:

sampling

Whatcausesgrosserror?(

).译:产生粗大误差的原因是什么?

参考答案:

Humanmistakes

Whatdoes“ES”meanintermsofdimensionaldeviation?译:在表示尺寸偏差的符号中,“ES”的含义是什么?

参考答案:

upperdeviationofhole(孔的上偏差)

Whatcanbedonetoavoidgrosserror?(

).译:怎样才能避免粗大误差?

参考答案:

Takingcare

Which

statement

is

FALSE

about

this

drawing?

译:关于该图,哪个说法是错误的?

参考答案:

Surface

A

is

more

important

than

surface

B(A面比B面更重要)

Whatdoes“ei”meanintermsofdimensionaldeviation?译:在表示尺寸偏差的符号中,“ei”的含义是什么?

参考答案:

lowerdeviationofshaft(轴的下偏差)

Whatmaycausesystematicerrorofmeasurement?(

).译：测量时产生系统误差的原因是什么？

参考答案:

alloftheoptions(全部选项均正确)

GaugeblocksCANNOTbeusedfor(

)译:量块不能用来做什么?

参考答案:

holediametermeasurement(测孔径)

Which

statement

is

TRUE

about

this

drawing?

译:关于该图,哪个说法是正确的?

参考答案:

Both

surface

A

and

B

are

datums(A、B面都是基准)

Whatdoes“es”meanintermsofdimensionaldeviation?译:在表示尺寸偏差的符号中,“es”的含义是什么?

参考答案:

upperdeviationofshaft(轴的上偏差)

Whattypeofmicrometerscanbeusedtomeasureholediameters?译:哪种千分尺用来测量孔径?

参考答案:

Internalmicrometers(内径千分尺)

The

drawing

requires

the

parallelism

of

(

)

is

0.05mm.译:该图约束的平行关系是什么?

参考答案:

the

axis

of

ΦD

hole

to

the

bottom(ΦD孔轴线对底面)

What

type

of

GD&T

does

the

symbol

depict?

译:图示形位公差的名称是什么?

参考答案:

Total

runout

What’s

the

reading

of

this

vernier

caliper?

译:该游标卡尺的读数是多少?

参考答案:

168.4

What’sthepurposeofmetrology?.译：技术测量的目的是什么？

参考答案:

alloftheoptions(全部选项均正确)

What

is

the

dimension

at

MMC?

译:图示轴在MMC状态下的尺寸是多少?

参考答案:

19.98

WhichisNOTtheobjectivesofmetrology?译:下列哪项不是技术测量的对象?

参考答案:

art

What

is

the

basic

size

of

the

shaft?

译:图示轴的基本尺寸是多少?

参考答案:

20

Measurementisthecomparisonoftheunknownquantitywith(

).译:测量是将未知量与什么进行比较的过程?

参考答案:

knownquantity

The

numbers

in

each

option

are

actual

hole

diameter

and

straightness.

Find

out

the

unqualified

one.

译:每个选项中的数值为轴的实际直径和直线度误差,找出其中不合格的一件。

参考答案:

24.01,

0.02

In

runout

inspection,

the

workpiece

should

(

).译:进行圆跳动检测时,被测工件要如何运动?

参考答案:

rotate

WhichdimensionequalstoΦ50±0.031译:哪项尺寸等于Φ50±0.031?

参考答案:

Φ50JS9

For

this

runout

inspection

device,

which

component

can

be

replaced

by

V-blocks?

译:该圆跳动检测仪中几号部件可以由V形块代替?

参考答案:

②

Whatshouldbedonebeforeusinggaugeblocks?译:使用量块前需要做什么?

参考答案:

alloftheoptions(全部选项均正确)

What

feature

CAN

be

controlled

by

the

GD&T

symbol

in

this

drawing?

译:图示形位公差能控制哪项要素?

参考答案:

Concentricity

of

shaft

ΦD

to

shaft

Φd2

What

is

the

dimension

at

MMC?

译:图示孔在MMC状态下的尺寸是多少?

参考答案:

20

What

is

the

upper

deviation

of

the

dimension?

译:图示孔的尺寸上偏差是多少?

参考答案:

0.033

What

does

the

circled

“E”

depict?

译:带圆圈的E是什么意思?

参考答案:

Envelop

Whatshouldbeusedtowipegaugeblocks?译:量块要用什么擦拭?

参考答案:

Softcloth

Whichwordistodescribehowclosethemeasuredvaluesaretothetruevalue?译:哪个单词用来表述测量值接近真实值的程度?

参考答案:

accuracy

What

is

the

lower

deviation

of

the

dimension?

译:图示孔的尺寸下偏差是多少?

参考答案:

0

Peopleuse(

)forroughnessvalues(e.g.0.8,1.6,3.2,6.3,..)?译:用于粗糙度数值的一组数字称为什么?

参考答案:

preferrednumbers(优先数组)

A

runout

inspection

device

consists

of

four

components.

Which

is

the

“datum”?

译:圆跳动检测仪由四个部件组成,哪一个叫“datum”?

参考答案:

①

What

feature

CANNOT

be

controlled

by

the

GD&T

symbol

in

this

drawing?

译:图示形位公差不能控制哪项要素?

参考答案:

Total

runout

of

shaft

Φd

Comparetoageneralmicrometer,anindicatingmicrometerhasa(

).译:杠杆千分尺比普通千分尺多了什么?

参考答案:

flexibleanvil(活动测砧)

What

is

the

dimension

at

LMC?

译:图示孔在LMC状态下的尺寸是多少?

参考答案:

20.033

Whichproductbelowmayrequirerunoutinspection?译:以下哪项产品需要进行圆跳动检测?

参考答案:

gear

Whatistoleranceintermsofmanufacturing?译:在制造业,tolerance一词的含义是什么?

参考答案:

Allowance

Howdowespecifyatoleranceforaproduct?译:如何制定产品的tolerance?

参考答案:

Bigbutsatisfiesfunctionality(满足功能的前提下大些)

Whatdoestolerancecontrol?译:tolerance用来控制什么?

参考答案:

alloftheoptions(全部选项均正确)

What

is

the

upper

deviation

of

the

dimension?

译:图示轴的尺寸上偏差是多少?

参考答案:

-0.02

Forthosedimensionswithoutspecifiedtolerance,theallowableerroris(

).译:图纸上未注公差的尺寸允许有多大误差?

参考答案:

IT8~IT9

Whatdoestheterm“bore”mean?译:术语“bore”的意思是什么?

参考答案:

Hole

Whatdoes“EI”meanintermsofdimensionaldeviation?译:在表示尺寸偏差的符号中,“EI”的含义是什么?

参考答案:

lowerdeviationofhole(孔的下偏差)

The

numbers

in

each

option

are

actual

hole

diameter

and

straightness.

Find

out

the

unqualified

one.

译:每个选项中的数值为孔的实际直径和直线度误差,找出其中不合格的一件。

参考答案:

24.00,

0.03

Whichtermisusedtodescribetheoperationofjoiningflatfacesofgaugeblocksbysliding?译:以下哪个术语表示“通过滑动使两个量块的工作面贴合的操作”?

参考答案:

Wring

How

many

pieces

of

gauge

blocks

are

usually

used

to

form

a

specific

dimension?译:要组成某个尺寸,一般宜用几块量块?

参考答案:

Nomorethan5

The

numbers

in

each

option

are

actual

shaft

diameter

and

straightness.

Find

out

the

unqualified

one.

译:每个选项中的数值为轴的实际直径和直线度误差,找出其中不合格的一件。

参考答案:

23.96,

0.03

What

is

the

basic

size

of

the

shaft?

译:图示孔的基本尺寸是多少?

参考答案:

20

WhichdimensionequalstoΦ40±0.008译:哪项尺寸等于Φ40±0.008?

参考答案:

Φ40js6

What

does

the

circled

“M”

depict?

译:带圆圈的M是什么意思?

参考答案:

Maximum

material

condition

What

is

the

maximum

allowable

straightness

error

of

the

shaft?.

译:该轴所允许的最大直线度误差是多少?

参考答案:

0.04

Preferrednumbersareaseriesnumberswith(

).译:优先数系是一组怎样的数字？

参考答案:

constantstepratio(等比数列)

WhichstatementisFALSEaboutdimensionΦ40f6?.译:关于尺寸Φ40f6,以下哪项说法是错误的?

参考答案:

ThesizeatMMCis40(MMC时的尺寸为40)

Thenumbers

in

each

option

are

actual

shaft

diameter

and

straightness.

Find

out

the

unqualified

one.

译:每个选项中的数值为孔的实际直径和直线度误差,找出其中不合格的一件。

参考答案:

23.99,

0.01

WhichstatementisTRUEaboutdimensionΦ40f6?.译:关于尺寸Φ40f6,以下哪项说法是正确的?

参考答案:

Itisashaftdimension(这是轴的尺寸)

WhichstatementisFALSEaboutdimensionΦ40H7?.译:关于尺寸Φ40H7,以下哪项说法是错误的?

参考答案:

Itisashaftdimension(这是轴的尺寸)