ASTM_D_7331_-_11.pdf

Designation:D733111Standard Practice forSewn Products Marker Data Interchange1This standard is issued under the fixed designation D7331;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice describes a format for transferring markerdata from a CAD marker software system to another or to aCAM software system.1.2 This practice does not support curve interpolation ordefinitions.All curves are represented by discrete vectors andare dependent on the resolution of the CAD software.1.3 This practice is concerned in limiting differences whenprocessing the same data on different CAD systems.1.4 This practice is not intended to represent the dimensionrelationships between pattern pieces or between pattern sizes,or the correspondence between 2D or 3D sewn product patternpiece geometries.1.5 The file format for the marker data exchange file definedby this standard complies with the XML format.1.5.1 The XML schema describing marker data exchangestandard XML structure is presented in an ASTM adjunct.21.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:3D6963 Terminology Relating to Sewn Products Automation2.2 ASTM Adjuncts:ASTM Adjunct:2XML Schema3.Terminology3.1 ForallterminologyrelatedtoSewnProductsAutomation,see Terminology D6963.3.2 The following terms are relevant to this standard:drillhole,grainline,line,notch,style.3.3 The following terms are new terms related to SewnProducts Automation:3.3.1 absolute pattern matching,nnesting specificationwhere a nested piece match point shall have a specifiedposition in regard to a repeat line.See Fig.1.3.3.2 bundle,nset of nested pieces that are intended to beprocessed together because they are issued from the samegraded style and are parts of the same end users product.3.3.2.1 DiscussionAll bundle pieces are to be cut on thesame material.3.3.3 bundle group,nset of bundles that are used to defineconstraints.3.3.3.1 DiscussionAbundle may be part of several bundlegroups for several different constraints.Example:pockets fromthe jacket and the trousers of a suit may have a mutual rotationconstraint.3.3.4 constraint,ndescription of the behavior that one orseveral nested piece of the marker should follow during markerprocessing.3.3.5 effciency,narea of the produced pieces located onthe up side of the fabric,including blocking,versus area of themarker,defined by its length and its width.3.3.5.1 DiscussionPieces area inside fusing blocks is con-sidered when calculating efficiency.Fusing blocks area is notconsidered.3.3.6 fabric category,nidentifies the category to whichthe fabric belongs.3.3.6.1 DiscussionThe category allows the definition offabric groups that will be used for pattern matching constraintsdefinitions.3.3.7 fabric type,ncharacteristic of a pattern piece used toidentify the material type the piece has to be made of.3.3.8 five star pattern,nmotif on a plaid fabric where thecenter of the pattern unit cell has the same role as its fourcorners.3.3.9 flip,ntransformation of a geometry that gives thesymmetry of the sized piece geometry either across the X axisor across the Y axis or across both,that is equivalent to a 180degrees rotation.See Fig.2.1This practice is under the jurisdiction ofASTM Committee D13 on Textiles andis the direct responsibility of Subcommittee D13.66 on Sewn Product Automation.Current edition approved Jan.15,2011.Published March 2011.Originallyapproved in 2007.Last previous edition approved in 2007 as D7331-07.DOI:10.1520/D7331-11.2Available from ASTM International Headquarters.Order Adjunct NumberADJD7331A.Original adjunct produced in 2007.Adjunct last revised in 2011.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.3.9.1 DiscussionThe X and Y axis to consider are thosefrom the sized piece referential.3.3.10 geometry to nest,ngeometry of a sized piece or anested piece used for nesting operation.3.3.10.1 DiscussionGeometry to nest is computed fromgeometry to produce with spacing added if it exists.3.3.11 geometry to produce,ngeometry of a sized piece ora nested piece used when cutting the marker.3.3.11.1 DiscussionGeometry to produce is computedfrom reference geometry,enhanced with production processingsuch as notch insertion and blocking