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1、Designation:D6673?10StardPracticefSewnProductsPatternDataInterchange—DataFmat1ThisstardisissuedunderthefixeddesignationD6673thenumberimmediatelyfollowingthedesignationindicatestheyearofiginaladoptioninthecaseofrevisionth

2、eyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.1.Scope1.1ThisstardisdesignedtofacilitatecommunicationbetweenCADCAMsystemstha

3、trepresenttwodimensionalflatpatternpieces.Thisstardalsoprovidesconventionsfrepresentingrelatedinfmationsuchasgraderuletables.Thisstardisnotintendedtorepresenttherelationshipsbetweenpatternpiecesthecrespondencebetween2D3D

4、sewnproductpatternpiecegeometries.1.2Thefilefmatfthepatterndataexchangefiledefinedbythisstard(PracticeD6673)complieswiththeDrawingInterchangeFile(DXF)fmat.AutodeskInc.developedtheDXFfmatftransferringdatabetweentheirAutoC

5、AD(r)productothersoftwareapplications.ThisstarddocumentsthemannerinwhichpatterndatashouldberepresentedwithintheDXFfmat.UsersofthisstardshouldhaveAutodeskInc.’sdocumentationonDrawingInterchangeFilesfoundintheAutoCADRefere

6、nceManualindertoassurecompatibilitytoallDXFfmatspecifications.TheAutoCADVersion13DXFspecificationistobeused.ThefilefmatfthegraderuletableexchangefileisanIItextfile.1.3Thisstarddoesnotpurpttoaddressallofthesafetyconcernsi

7、fanyassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstardtoestablishappropriatesafetyhealthpracticesdeterminetheapplicabilityofregulatylimitationspritouse.2.ReferencedDocuments2.1ASTMStards:D6963TerminologyRelat

8、ingtoSewnProductsAutomation2.2ANSIAAMAStard:ANSIAAMA292A3.Terminology3.1DefinitionsofTermsSpecifictoThisStard:FallterminologyrelatedtSewnPductsAutomationseeTerminologyD6963.3.1.1alternategradereferencelinen—anoptionalint

9、ernallinewhoseientationisusedfthexaxisofagraderule.3.1.1.1Discussion—Theapplicationofagraderulewillbeientedtothegradereferencelineunlessanalternategradereferencelineisspecified.(Seegradereferenceline.)3.1.2basesizen—thed

10、igitizedcreatedsizeofastyle.3.1.2.1Discussion—Basesizeisasynonymofsamplesize.(Seesamplesize.)3.1.3blockn—aDXFkeywdthatisusedtoidentifyasectionofthefilethathasinfmationaboutoneobject.3.1.3.1Discussion—ablockkeywdshouldbeu

11、sedtoidentifythestartofinfmationfapatternpiecethesectionshouldbeendedwithanendblkkeywd.3.1.4internalcutoutsn—linespartofapatternpiecenotpartofthepieceboundarywhicharecutduringthecuttingprocess.3.1.5internallinesn—linespa

12、rtofapatternpiecenotapartofthepieceboundarywhicharenotcut.3.1.5.1Discussion—Internallinesarenotcutbutmaybedrawnduringthecuttingprocess.3.1.6sewlinesn—internallinesthatindicatewherestitchingofpatternpiecesistobedone.3.2De

13、finitionsofTermsSpecifictoThisStard:3.2.1entitiesn—aDXFkeywdthatisusedtoidentifythesectionoftheDXFfiledescribingfileidentificationinfmation.3.2.1.1Discussion—StylesystemtextmustbeplacedintheentitiessectionoftheDXFfile.3.

14、2.2systemtextn—infmationrelatedtoeitherthestylepatternpiecesintheDXFfile.3.2.3systemtextidentifiern—keywdsusedinDXFfiletoconstructsyntaxassociatevalueswithspecificsystemtext.3.2.4validationvertexn—vertexthatisedintoapoly

15、lineindertoguaranteethattheresultingpolylinerepresentstheiginalcurveintheexptingCADsystemswithinagivencurvetolerance4.SummaryofPractice4.1PatternPieceTransferFileFmat—ThefilefmatdefinedbythisstardcomplieswiththeDXFfmat.A

16、DXFfileisaspeciallyfmattedIItextfile.Itconsistsofanoptionalheaderaswellastablesblocksentitiessections.1ThispracticeisunderthejurisdictionofASTMCommitteeD13onTextilesisthedirectresponsibilityofSubcommitteeD13.66onSewnProd

17、uctAutomation.CurrenteditionapprovedJan.12010.PublishedMarch2010.iginallyapprovedin2001.Lastpreviouseditionapprovedin2004asD6673–04.DOI:10.1520D667310.Copyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenP

18、A194282959.UnitedStates1200.0Ycodinate42–0.014743bulgevalue0VERTEX81layer1–boundaryline10–45.900000Xcodinate20–53.800000Ycodinate42–0.005465bulgevalue0VERTEX8110–34.200000Xcodinate20–38.600000Ycodinate42–0.018913bulgeval

19、ue0VERTEX81layer1–boundaryline10–19.100000Xcodinate20–20.200000Ycodinate0SEQEND4.3.1.1StyleSystemText—Inadditiontothepieceboundarythislayercontainsinfmationreferredtoasrequiredstylesystemtext.Itonlyoccursonceonthislayeri

20、nENTITIESisassumedtobevalidfallpiecesintheDXFfile.Styleinfmationisknownassystemtext.ThistextstsincontrasttoannotationtextwhichisplottedoutisdefinedasLayer15intheDXFfile.SystemtextisinfmationaboutthestylepiecesintheDXFfil

21、e.Thecrectsyntaxfsystemtextisthesystemtextidentifierfolloweddirectlybyacolon(:)acterfolloweddirectlybyastringoftextrepresentingtheactualvalueoftheidentifier.Identifierscanbefmedfromupperlowercaseactersbutmustappearasspec

22、ifiedinthisstard.ThevalueoftheidentifieriscasesensitivecanincludeactersfromthefollowingII7bitactersubsetincludingthespaceacter(’’)aswell:!“#$%@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_`abcdefghijklmnopqrstuvwxyz|~Insomecasesthevalu

23、esofidentifiersmusthaveaspecificfmatvalue.ToavoidalossofinfmationallvaluesofidentifiersmustappearintheDXFfileastheyappearedintheexptingCADsystem.ImptingCADsystemsshouldwarntheuserifthevalueofanidentifierisbeingdonimpting

24、resultinginalossofinfmation.StyleSystemTextCrectSyntax(Identifier:)stylenameStyleName:creationdateCreationDate:creationtimeCreationTime:authAuth:samplesizeSampleSize:StyleSystemTextCrectSyntax(Identifier:)graderuletableG

25、radeRuleTable:unitsUnits:StardVersionASTMD13Proposal1Version:XXcurvetoleranceCurveTolerance:Ifthestylebeingtransferredhasnosamplesizegraderuletable(asisthecaseinnonapparelsewnproducts)thenthevaluesofthesesystemtextidenti

26、fierscanbeleftblankbutthesystemtextidentifierisstillrequired.METRICmeansthatallvaluesareindecimalmillimeterstotwoplaces(e.g.12.27)ENGLISHmeansthatallvaluesareindecimalinchestofourplaces(e.g.4.8751).TheappropriatefmatfCre

27、ationDateisfCreationTimeitis.ThecurvetolerancesystemtextmustexistonlyexistswhenQualityValidationCurvesareusedinthefile.Thetolerancevalueisrepresentedusingtheunitsthathavebeendefined.Thecurvetoleranceisdefinedmathematical

28、lyasthemaximumprojecteddistanceofavertexfromapolylineonaQualityValidationLayertotheassociatediginalcurve(ascalculatedbytheexptingsystem).Itshouldbeusedbyareceivingimptingsystemtodetermineaccuracyofthegeneratedcurve(based

29、ontheturnpointsonlayer2thecurvepointsonlayer3)totheiginalcurve.Alternativelythequalityvalidationcurvecanbeuseddirectlytoregeneratetheiginalcurveinpolylinerepresentation.DXFexampleofsystemtext:TEXT81723100.000200.000110.0

30、04210.000400.394500.0001StyleName:SHIRT04.3.1.2PieceSystemText—ThisissystemtextthatappearswithineachpieceBLOCK:PieceSystemTextCrectSyntax(Identifier:)PieceNamePieceName:QuantityQuantity:RotationRotation:FlipFlip:TiltTilt

31、:FoldFold:MaterialMaterial:OnlyPieceNameisrequired.QuantitywillbegivenasRLwhereRindicatesthenumberofrightpiecesrequiredLindicatesthenumberofleftpiecesrequired.(Example32)Rotationisgiveninstepincrementdegrees.Itisassumedt

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