Designation:D7331−11StandardPracticeforSewnProductsMarkerDataInterchange1ThisstandardisissuedunderthefixeddesignationD7331;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThispracticedescribesaformatfortransferringmarkerdatafromaCADmarkersoftwaresystemtoanotherortoaCAMsoftwaresystem.1.2Thispracticedoesnotsupportcurveinterpolationordefinitions.AllcurvesarerepresentedbydiscretevectorsandaredependentontheresolutionoftheCADsoftware.1.3ThispracticeisconcernedinlimitingdifferenceswhenprocessingthesamedataondifferentCADsystems.1.4Thispracticeisnotintendedtorepresentthedimensionrelationshipsbetweenpatternpiecesorbetweenpatternsizes,orthecorrespondencebetween2Dor3Dsewnproductpatternpiecegeometries.1.5ThefileformatforthemarkerdataexchangefiledefinedbythisstandardcomplieswiththeXMLformat.1.5.1TheXMLschemadescribingmarkerdataexchangestandardXMLstructureispresentedinanASTMadjunct.21.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:3D6963TerminologyRelatingtoSewnProductsAutomation2.2ASTMAdjuncts:ASTMAdjunct:2XMLSchema3.Terminology3.1ForallterminologyrelatedtoSewnProductsAutomation,seeTerminologyD6963.3.2Thefollowingtermsarerelevanttothisstandard:drillhole,grainline,line,notch,style.3.3ThefollowingtermsarenewtermsrelatedtoSewnProductsAutomation:3.3.1absolutepatternmatching,n—nestingspecificationwhereanestedpiecematchpointshallhaveaspecifiedpositioninregardtoarepeatline.SeeFig.1.3.3.2bundle,n—setofnestedpiecesthatareintendedtobeprocessedtogetherbecausetheyareissuedfromthesamegradedstyleandarepartsofthesameenduser’sproduct.3.3.2.1Discus...
