VW 01054-EN 技术图纸（连系尺寸）

GroupstandardVW01054

Issue2016-01

Class.No.:02245

Descriptors:dimensioning,dimensionline,extensionline,dimensionlinelimiting,referenceline,dimensionfigure,

parenthesizeddimension,tubebend,holespacing,radianmeasure,conedimension,taper,inclination,

equalspacingtolerance,dimension,enveloperequirement,envelopeprinciple,independencyprinciple,

tolerancingprinciple

Drawings

DimensioningandTolerancing;EnvelopeRequirementandIndependencyPrinciple

Preface

Effectivestartingwiththisissue,theenveloperequirementforsizesthatpreviouslyappliedbyde‐faultinallcases(the"tolerancingprinciple"asperVolkswagenstandardVW01054)isnolonger

theonlyoptionfornewdrawings(i.e.,drawingsdraftedafterthisstandard'sdateofpublication),asthisissueintroducestheindependencyprincipleasanalternative.Thismeansthat,foreverynewdrawing,itisnecessarytochooseeithertheenveloperequirementortheindependencyprincipleandenteritintothetitleblock.See

section3

and

section4

fordetails.

Previousissues

VW01054:1975-07,1990-03,1998-10,2005-09,2009-02,2011-03,2012-02

Changes

ThefollowingchangeshavebeenmadetoVW01054:2012-02:

–Standardtitleexpanded

–Standardrevised;newsectionsaddedandnewoutlinedefined

–Technicalresponsibilitychanged

–Prefaceadded

–

Section1"Scope"

changed

–

Section2"Generaldimensioningandtolerancingrules"

added

–

Section3"Generalapplicabilityofenveloperequirementandindependencyprinciple"

added

–

Section4""Enveloperequirement"and"independencyprinciple"tolerancingtypesforVolks‐

wagenGroupdrawings"

added

Alwaysusethelatestversionofthisstandard.

Thiselectronicallygeneratedstandardisauthenticandvalidwithoutsignature.

TheEnglishtranslationisbelievedtobeaccurate.Incaseofdiscrepancies,theGermanversionisaloneauthoritativeandcontrolling.

Page1of71

Technicalresponsibility

EKDV/4Dr.-Ing.Norbert

Wisla

Tel.:

+495361923370

TheStandardsdepartment

EKDV/4NorbertWislaEKDV

Tel.:

+495361948869

MaikGummert

Allrightsreserved.NopartofthisdocumentmaybeprovidedtothirdpartiesorreproducedwithoutthepriorconsentofoneoftheVolkswagenGroup’sStandardsdepartments.

©VolkswagenAktiengesellschaftVWNORM-2015-07c

Page2

VW01054:2016-01

–

Section5"Featuresofdimensioning"

added(combinestheoldsections3,4,5,and6);refer‐encetoDIN406-12added

–

Section5.1"Dimensionlines,extensionlines"

revised,amended,andrestructured;oldfig‐ures13,17,19andcorrespondingtextsdeleted;oldfigure18deleted

–

Section5.2"Dimensionlinelimiting"

revised,amended,andrestructured;

Figure24

,

Figure25

,

Figure26

,and

Figure27

added

–

Section5.3"Dimensionfigures"

:Regulationswithrespecttoenteringdeviationsadded;

Figure28

(oldfigure23)changed;

–

Section5.3.1"Dimensionletters"

added

–

Section5.3.2"Positionofgraphicandlettersymbolswithdimensionnumbers"

added

–

Section5.4"Specialdimensions–insideparentheses,brackets,orframes"

:Oldsection7,"Dimensionswithlabels,"revised,amended,andrestructured;

Figure36

added

–

Section5.4.1"Auxiliarydimensions"

rewritten

–

Section5.4.2"Controldimensions"

:Secondsentenceamended

–

Section5.4.4"Theoreticallyexactdimensions"

:

Figure42

updated

–

Section5.4.5"Fixturedimensionsfortooldesign"

:

Figure43

added

–

Section5.5"Inspectionmarkingforinspectionfeatures"

:Revisedandamended;evaluation

code"M"andcorrespondingtextdeleted;oldfigures35and36deleted;

Figure45

,

Figure46

,

Table1

added

–

Section5.5.1"Inspectionreport"

added

–

Section5.6"Referencelines"

:Oldfigure23andtextconcerningdatumsdeleted

–

Section6"Enteringdimensions"

added;includesoldsections10to22

–

Section6.8"Spacings"

added;includesselectedandrevisedcontentsfromtheoldsections16and17

–

Section6.9"Paralleldimensioning,increasingdimensioning"

added;includesselectedandre‐visedcontentsfromtheoldsections16and17

–

Section6.10"Symmetricalparts"

:Referenceto

Figure104

added

–

Section6.11"Arcdimensions,effectivelengths"

:Oldfigure123andcorrespondingtextde‐leted

–

Section6.12"Threaddimensions"

:ReferencetostandardVW01179added

–

Section6.13"Equalspacingtolerance"

amended;textconcerningtheexplanationofthesym‐bolsfortheequalspacingtolerance,

Figure135

,and

Table2

added

–

Section6.15"Benttubesandrods(solidmaterial)"

revisedandchanged

–Oldsection22.1.3,"Tubecentertangent,"deleted

–Oldsection22.3,"Simplifiedrepresentationwithdimensionsspecifiedintable,"deleted

–

Section7"Collectiveinformation"

added

–

Section7.1"Noteonundimensionedgeometriesinthedataset"

added

–

Section7.2"Generaltolerancesforlinearandangularsizes"

added

–

Section7.3"ProfiletoleranceswithrespecttothedatasetanddefinedRPSreferencesystem"

(oldsection9,"Surfaceshapetoleranceandtrimtolerancewithrespecttothedataset")re‐

vised

–

Section8"Applicabledocuments"

updated

–

AppendixA

added

Page3

VW01054:2016-01

–

AppendixB

added

–

AppendixC"Definitions"

added

Page4

VW01054:2016-01

Contents

Page

1

Scope

5

2

Generaldimensioningandtolerancingrules

5

2.1

Generalinformation

5

2.2

Generalrules

5

3

Generalapplicabilityofenveloperequirementandindependencyprinciple

7

3.1

Generalapplicabilityofenveloperequirementforsizes

7

3.1.1

Enveloperequirement

7

3.2

Independencyprinciple

8

4

"Enveloperequirement"and"independencyprinciple"tolerancingtypesfor

VolkswagenGroupdrawings

8

4.1

"Enveloperequirement"tolerancingforVolkswagenGroupdrawings

8

4.1.1

Rulefordrawingsolderthanthisissueofthestandard

10

4.2

ApplicabilityoftheindependencyprincipletoVolkswagenGroupdrawings

11

4.3

Applicabilityoftheenveloperequirementortheindependencyprincipleto

VolkswagenGroupdrawingswithanexternalrestrictiononuse

12

4.3.1

Supplierdrawingswithoutanotespecifyingthetolerancingtype

13

5

Featuresofdimensioning

13

5.1

Dimensionlines,extensionlines

14

5.2

Dimensionlinelimiting

16

5.3

Dimensionfigures

17

5.3.1

Dimensionletters

19

5.3.2

Positionofgraphicandlettersymbolswithdimensionnumbers

19

5.4

Specialdimensions–insideparentheses,brackets,orframes

19

5.4.1

Auxiliarydimensions

19

5.4.2

Controldimensions

20

5.4.3

Finaldimensionsforpartsmanufacturedusingnon-machiningoperations

20

5.4.4

Theoreticallyexactdimensions

21

5.4.5

Fixturedimensionsfortooldesign

22

5.5

Inspectionmarkingforinspectionfeatures

22

5.5.1

Inspectionreport

24

5.6

Referencelines

24

6

Enteringdimensions

25

6.1

Repeatdimensions

25

6.2

Radii

25

6.3

Diametersymbol

28

6.4

Sphere

29

6.5

Squaresymbol,diagonalcross,widthsacrossflats

30

6.6

Cone,taper,incline

31

6.7

Grooves

33

6.8

Spacings

36

6.9

Paralleldimensioning,increasingdimensioning

36

6.10

Symmetricalparts

37

6.11

Arcdimensions,effectivelengths

38

6.12

Threaddimensions

39

6.13

Equalspacingtolerance

42

6.14

Workpieceedges

43

6.15

Benttubesandrods(solidmaterial)

43

6.15.1

Dimensioningincoordinatesystemandtolerancing

44

6.15.2

Totallengthandperpendicularityofthetubes'endfaces

44

7

Collectiveinformation

46

Page5VW01054:2016-01

7.1

Noteonundimensionedgeometriesinthedataset

46

7.2

Generaltolerancesforlinearandangularsizes

46

7.2.1

Generaltolerancesfornominaldimensionswithouttolerancespecification

46

7.2.2

Generaltolerancesforundimensionedlinearandangularsizes

47

7.3

ProfiletoleranceswithrespecttothedatasetanddefinedRPSreference

system

48

8

Applicabledocuments

50

AppendixA

Enveloperequirementexplanations

52

A.1

TaylorPrinciple

52

A.1.1

Feature-of-size

54

A.1.2

Sizes

57

A.1.3

SpecificationmodifiersforsizesasperDINENISO14405-1

59

A.1.4

Enveloperequirementdrawingnote

62

A.2

Independencyprincipleexplanations

64

A.2.1

Lengthdimensiontolerances

64

A.2.2

Angulardimensiontolerance

66

AppendixB

Problemconcerningstandardswhenitcomestothegeneralapplicabilityofthe

enveloperequirementswithoutadrawingnoteasperDIN7167

67

B.1

AppendixC

ModificationstoVolkswagenstandards(VW01014,VW01054,andVW01155)

67

Definitions

71

1Scope

Thisstandardappliestothedimensioningandtolerancingusedinengineeringdrawings,inthe

three-dimensionaldrawing-lessprocess(3DZP),andinotherdocumentsinvolvedinthedevelop‐mentprocess.

ThisstandardadherestotheinternationalrulesforengineeringdrawingstothegreatestextentpossibleandhasbeenexpandedtomeetthespecificrequirementsoftheVolkswagenGroup.

Detailsthatarenotcoveredinthisstandardmustbeselectedasnecessarytomeetthespecificpurposeathand.Moreover,theymustbeunambiguous.

NOTE1:Thefiguresgiveninthisstandardareexamplestoillustratetherelevantrule.Theyarecompleteonlytotheextentthattheyshowthesituationdescribed.Theindicateddimensionsandtolerancesareintendedonlyasexamplevalues.

2Generaldimensioningandtolerancingrules

2.1Generalinformation

Inthedesignprocess,thecomponentsaredesignedwiththehelpofCADsystemsfromgeometri‐calfeatureswithnominaldimensionsandidealgeometricalshapes.Thesedesignednominalcom‐ponentmodelsarereferredtoas3-Dmodelsordatasets.

Duetothevariousfactorsinvolvedinthemanufacturingprocess,thecomponentsactuallypro‐

ducedwillhavedimensional,shape,andpositionaldeviations.Thesedeviationsmustbelimited

withappropriate,function-relateddimensional,location,orientation,runout,andformtolerancesinordertoensurethatthecomponentwillworkproperly.

2.2Generalrules

Thefollowinggeneraldimensioningandtolerancingrulesmustbeobserved:

Page6

VW01054:2016-01

–Thetypeoftolerancing(enveloperequirementforsizes(see

sectionA.1.1

)orindependencyprinciple)mustbespecifiedandenteredintothedrawing'stitleblock.

–Adatumsystemmustbedefinedbeforedimensioning.Thenominaldimensionsmustbeen‐teredbasedonthedatumfeatures.Thedatumfeaturesmustbetolerancedrelativetoeach

other.Thetolerancingiscarriedoutattheendinthefollowingorder:dimensional,location,

orientation,andformtolerances.Thefunctionandassemblyofindividualpartsplayadefiningrolewhenitcomestothedimensioningandtolerancing.

–Thedimensionsinadrawingarefinisheddimensionsandindicatetheendconditionofthepart,includingsurfaceprotection.Deviationsfromthis,e.g.,pre-turningdimensions,are

markedassuchwithtext.

–Inorderforthedrawingtobeeasilyunderstandable,dimensionsmustbeenteredoutsidethegraphicalrepresentationwheneverpossibleandonlyonceforeachgeometricalfeature(ex‐ception:repeatdimensions;see

section6.1

).

–Ifdimensionscannotbemadetofitinsmallgraphicalrepresentations,therepresentations,orappropriatedetails,mustbedrawnusingalargerscale(see

VW01050

).

–Inassembly(ASSY)drawings,onlythedimensionsthatarenecessaryforassemblyorforfur‐thermachiningareentered,e.g.,partsthataredrilledonceassembled.Becauseofthis,di‐

mensionsandtolerancesusedtomanufacturepartsmustbespecifiedinthepartdrawings.Inthe3-Ddrawing-lessprocess,partswithouttheirowndrawing(nodrawing)cannotbepro‐cessed;see

VW01058supplement1

,"Requirements"section.Separatedrawingsmustbedraftedfortheseindividualparts.

–Thedimensioningandtolerancingmustbecomplete.Thismeansthatallnecessarygeometricrequirementsneededinorderforthepartstobemanufacturedandcheckedmustbespecifiedinthedrawingor3-Dmodel.Thedimensional,form,andpositionaldeviationsrelevanttofunc‐tionalcapabilitymustbelimitedforallgeometricalfeaturesbyusingindividualand/orgeneraltolerances.

–Thedimensioningandtolerancingmustbeunequivocal,i.e.,itmustbeimpossiblefortheretobeanyambiguitiesindownstreamprocesses,e.g.,productionand/orqualityassurance.

–Theformandpositionaltolerancesmustbeenteredasper

DINENISO1101

.

–Thedatumsanddatumsystemsmustbeenteredasper

DINENISO5459

.

–Thereferencepointsystem(RPS)datumsystemsmustbeenteredasper

VW01055

.

–Ifdimensional,form,andpositionaltolerancespecificationscannotdescribealldetails,addi‐

tional,cleartextspecificationsmustbepreparedandenteredinGermanandEnglishusingthe"DoLittle"Volkswagenapplication,see

VW01058

,section"Requirements."

Page7VW01054:2016-01

3Generalapplicabilityofenveloperequirementandindependencyprinciple

Bydefiningthetypeoftolerancinginanengineeringdrawing,i.e.,whethertheindependencyprin‐cipleisbeingusedortheenveloperequirementforsizesisgenerallyapplicable,adesignengineerdefineshowthecomponentswillbecheckedafterwards.Becauseofthis,itisabsolutelynecessaryforeverysingledrawingtoindicatethespecifictypeoftolerancingthatisbeingused.

3.1Generalapplicabilityofenveloperequirementforsizes

Whentheenveloperequirementforsizesasper

DINENISO14405-1

(tolerancingforinspection

withgages;see

sectionA.1

)isgenerallyapplicable,theenveloperequirementautomaticallyap‐

pliestoallgeometricalfeatures(referredtoas"features-of-size"),of"cylindricalsurface"type(cyl‐inders–e.g.,hole,shaft,pin)or"twoparalleloppositeplanes"type(e.g.,width–e.g.,thickness,

groovewidth,slotwidth,andkeywidth),tolerancedwithdimensionaltolerances(either"±"toleran‐cesorISOcodes,e.g.,H7)withoutadirectmarkingwithsymbolⒺafterthedimensionaltoler‐

ance.

3.1.1Enveloperequirement

Theenveloperequirementasper

DINENISO14405-1

definesacorrelationbetweendimensionaltolerance,formdeviation,andparallelismdeviationforsizes.Itstatesthatthedimensionaldevia‐tion,theformdeviation,andtheparallelismdeviationmustnotbegreaterthanthedimensionaltol‐eranceofthetolerancedgeometricalfeature.Inotherwords,itstatesthatforproperfit,afeature-of-size(see

sectionA.1.1

)oftype"cylinder"oroftype"twoparalleloppositeplanes"mustnotpen‐etrateageometricallyidealenveloperepresentingthemaximummaterialsize(gogage).Atthe

sametime,noactuallocalsizemustexceed(e.g.,holeandgroovewidth–internaldimensions)orfallbelow(e.g.,shaftandkey–externaldimensions)theleastmaterialsize(nogogage–two-

pointsize;see

sectionA.1.2

).

Inpractice,theenveloperequirementischeckedaspertherulesoftheTaylorPrinciple;see

sectionA.1

.

Theenveloperequirementmustonlybeusedifthefunctionrequiresaspecificfitfortwogeometri‐calfeatures(e.g.,hole,shaftorgroove,key)asper

DINENISO286-1

and

DINENISO286-2

.

Theenveloperequirementmustbeusedpreferentiallyandsensiblyforgeometricalfeaturesthatarepairedforaclearancefit.Thegeometricalfeaturesmustbeabletophysicallypassago-gagecheckaspertheTaylorPrinciple.

Theenveloperequirementcannotbeusedfor:

–Features-of-sizesuchascones,wedges,spheres

–Non-features-of-sizesuchas:

–Complexgeometricalfeatures(forexamples,see

figureA.5

)and

–Distancesthataredimensionsotherthanlinearsizes(forexamples,see

figureA.6

to

figureA.8

and

DINENISO14405-2

).

Page8

VW01054:2016-01

3.2Independencyprinciple

Theindependencyprinciplespecifiesthatalldimensional,form,andpositionaltolerancesina

drawingmustbecheckedandadheredtoindependentlyofeachotherunlessaspecialnote(see

sectionA.2

)indicatingotherwisehasbeenentered.

Thismeansthat:

–Thereisnocorrelationbetweenthedimensionaltolerance,shapedeviation,andparallelismdeviationandallrequiredformandparallelismtolerancesforfeatures-of-sizemustbespeci‐fied

–Bydefault,thesizesarelocaltwo-pointsizes(see

sectionA.1.2

)asper

DINENISO14405-1

i.e.,theymustbemeasuredasthedistancebetweentwooppositepointsusingwhatisrefer‐redtoasthe"two-pointmeasuringmethod"

–Iftheenveloperequirementneedstoapplytoindividualsizesduetofunctionalreasons,therequirementmustbeentereddirectlyafterthedimensionaltolerancewiththeⒺsymbol;see

sectionA.1.3

and

sectionA.1.4

Formoreinformationontheindependencyprinciple,see

sectionA.2

.

4

4.1

"Enveloperequirement"and"independencyprinciple"tolerancingtypesforVolkswagenGroupdrawings

"Enveloperequirement"tolerancingforVolkswagenGroupdrawings

Ifthe"enveloperequirement"asper

DINENISO14405-1

appliestoallsizesinVolkswagenGroupdrawings,thedraftspersonmustusethecurrentdrawingframefordevelopment(productiondraw‐ing)asper

VW01014

withtheintegratedreferenceto

VW01054

inthe"Unterlagen/References"section(see

figure1

)andbytheentryofthetextmacroNO-A11,"Huellbedingung/envelopere‐

quirement",from

VW01014

inordertoensurethattherequirementisapplied(see

figure2

).ThetextcanbeenteredautomaticallyormanuallydependingonhowtheCADsystemsbeingusedareprogrammed.Thecreatednote(see

figure2

)hasthesamemeaningasthedrawingnoteasper

DINENISO14405-1

shownin

figure3

.

Figure1–"Unterlagen/References"field

Page9VW01054:2016-01

Legend

1TextmacroNO-A11from

VW01014

Figure2–Exampleforthedrawingnoteforthegeneralapplicabilityoftheenveloperequirementto

sizesonVolkswagenGroupdrawings

Figure3–Exampleforthedrawingnoteforthegeneralapplicabilityoftheenveloperequirementto

sizesasper

DINENISO14405-1

(conformityischeckedwithagage)

Thedrawingframeinthecurrentlyvalidissueof

VW01014

mustalwaysbeusedwhendraftingnewdrawingsandmakingdrawingchanges.

Duringthetransitionperiod,thatis,untilthedrawingframehasbeenimplementedinaccordancewiththecurrentlyvalidissueof

VW01014

fortheCADsystemsinuseintheVolkswagenGroup,thedrawingframeasperthepreviousissueofVW01014

1)

maybeused.

Afteradrawingchange,drawingsthatdonotcontainanoteindicatingthegeneralapplicabilityof

theenveloperequirementortheindependencyprinciple(foranexample,see

figure4

)mustnolon‐gerbestoredintheEngineeringDataManagementSystem(HyperKVS)withtheolddrawing

frame.

1)FortheuseofthedrawingframeasperVW01014:2012-09(foranexample,see

figure5

),thenoteonthegeneralapplicabilityoftheenveloperequirementortheindependencyprinciplemustbeenterednexttothetitleblock.

Page10

VW01054:2016-01

4.1.1Rulefordrawingsolderthanthisissueofthestandard

TheenveloperequirementisgenerallyapplicabletoallVolkswagenGroupdrawingsif:

1)Theydonotincludeanoteindicatingthattheenveloperequirementmustbeusedandtheirini‐tialreleasedateisbeforeVW01054,issue2010-05waspublished.Foranexample,see

figure4

.

Figure4–Exampleshowingthetitleblockforadrawingwithoutanoteindicatingthegeneralap‐

plicabilityoftheenveloperequirementtoVolkswagenGroupdrawings

2)TheyweredraftedinaccordancewithspecificationsofVW01054,issue2011-03and2012-02,andcontainthefollowingtext"TolerierungsgrundsatznachVW01054.Tolerancingprincipleacc.toVW01054."inthetitleblockorinthe"Bemerkungen/Notes"field.Foranexample,see

figure5

.

Figure5–Exampleshowingtheolddrawingnoteforthegeneralapplicabilityoftheenvelopere‐

quirementtoVolkswagenGroupdrawings

Page11

VW01054:2016-01

4.2ApplicabilityoftheindependencyprincipletoVolkswagenGroupdrawings

Iftheindependencyprincipleasper

DINENISO8015

appliestoVolkswagenGroupdrawings,thedraftspersonmustusethecurrentdrawingframefordevelopment(productiondrawing)asper

VW01014

withtheintegratedreferenceto

VW01054

inthe"Unterlagen/References"field(see

figure1

)andbytheentryoftextmacroNO-A13,"Unabhaengigkeitsprinzip/independencyprinci‐ple",from

VW01014

inordertoensurethattheprincipleisapplied(see

figure6

).ThetextcanbeenteredautomaticallyormanuallydependingonhowtheCADsystemsbeingusedareprogram‐med.

Thecreatednote(see)hasthesamemeaningasthedrawingnoteasper

DINENISO8015

shownin

figure7

.

Legend

1TextmacroNO-A13from

VW01014

Figure6–ExampleforthedrawingnotefortheindependencyprincipleforVolkswagenGroup

drawings

Figure7–Exampleforthedrawingnotefortheindependencyprincipleasper

DINENISO8015

.

Page12

VW01054:2016-01

4.3

ApplicabilityoftheenveloperequirementortheindependencyprincipletoVolkswagenGroupdrawingswithanexternalrestrictiononuse

ForVolkswagenGroupdrawingswithanexternalrestrictiononuse,thetolerancingtypespecifiedinthesupplierdrawingappliesautomatically.

WhenchangingsupplierdrawingstoVolkswagenGroupdrawingswithanexternalrestrictionon

use,theinstructionsin

section4.1

and

section4.2

mustbefollowedasappropriate.Currenttext

macrosNO-A7toNO-A10from

VW01014

asper

VW01058

,section"ChangingsupplierdrawingstoVolkswagenAGdrawingswitharestrictiononuse,"mustbeused;see

figure8

.

Figure8–Exampleforthedrawingnoteforthegeneralapplicabilityoftheenveloperequirementto

VolkswagenAGdrawingswithanexternalrestrictiononuse

Page13VW01054:2016-01

FormoredetailsonchangingsupplierdrawingstoVolkswagenGroupdrawingswithanexternalrestrictiononuse,see:

–"UserManual–RestrictionsonUseforDataProvidersandDataRecipients,"availableinHy‐perKVS.Path:"ExtrasDocumentation/manuals"→"Userdocumentation"→"Verwendungsbes‐chränkung"(restrictiononuse)

–"CriteriaforRelease-CompliantDrawings"(KfZguideline).AvailableinHyperKVS,path"Ex‐trasDokumentation/Handbücher"→"Anwenderdokumentation"→"StücklisteundFreigabe"(Extrasdocumentation/manuals→Userdocumentation→Billofmaterialsandrelease)

4.3.1Supplierdrawingswithoutanotespecifyingthetolerancingtype

IfasupplierdrawingneedstobechangedtoaVolkswagenGroupdrawingwitharestrictiononuseanddoesnotcontainanoteindicatingthegeneralapplicabilityoftheenveloperequirementorin‐

dependencyprinciple,theindependencyprincipleappliesautomaticallytothedrawingasper

DINENISO8015

.

InGermany,theenveloperequirementappliedtoallfeatures-of-sizeoftype"cylinder"ortype"twoparalleloppositeplanes"untilApril2011asperDIN7167

2)

:1987-01,providedthecorrespondingdrawingswerebasedonDINstandards.Becauseofthis,itisstronglyrecommendedtocontactthesupplierinordertoclarifytherequirementswithregardtothesedrawings.

5Featuresofdimensioning

Dimensioningisperformedwiththehelpofthefeaturesshownin

figure9

.Enteringtolerancesoflengthandangledimensions,see

DIN406-12

.

Legend

1Dimensionline

2Dimensionfigure(dimensionfigurewithsymboloftoleranceclass,dimensionfigurewithdeviations)

3Dimensionlinelimiting

4Extensionline

5Referencelinesforenteringdimensions

Figure9–Featuresofdimensioning

2)DIN7167:1987-01–Relationshipbetweentolerancesofsize,form,andparallelism;enveloperequirementwithoutindividualindica‐tiononthedrawing

Page14

VW01054:2016-01

5.1Dimensionlines,extensionlines

Dimensionlinesaregenerallydrawnperpendiculartothecor