1、Designation: D 7331 07Standard Practice forSewn Products Marker Data Interchange1This standard is issued under the fixed designation D 7331; 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 par
2、entheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 pract
3、ice does not support curve interpolation ordefinitions. All curves are represented by discrete vectors andare dependent on the resolution of the CAD software1.3 This practice is concerned in limiting differences whenprocessing the same data on different CAD systems.1.4 This practice is not intended
4、to represent the dimensionrelationships between pattern pieces or between pattern sizes,or the correspondence between 2D or 3D sewn product patternpiece geometries.1.5 This practice does not specify the file format for themarker data exchange.1.6 A consistent XML implementation of this practice isre
5、commended.1.7 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. Re
6、ferenced Documents2.1 ASTM Standards:2D 6963 Terminology Relating to Sewn Products Automa-tion3. Terminology3.1 For all terminology related to Sewn Products Automa-tion, see Terminology D 6963.3.2 The following terms are relevant to this standard: drillhole, grainline, line, notch, style.3.3 The fol
7、lowing terms are new terms related to SewnProducts Automation:3.3.1 absolute pattern matching, nnesting specificationwhere the nested piece position shall have a specified positionin regard to a repeat line.3.3.2 bundle, nset of nested pieces that are intended to beprocessed together because they ar
8、e 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 differ
9、ent 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 on
10、the 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 isconsidered when calculating efficiency. Fusing blocks area isnot considered.3.3.6 fabric category, nidentifies the category to whichthe fa
11、bric 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 flip, ntransformation of a geometr
12、y that gives thesymmetry of the graded piece geometry either across the X axisor across the Y axis or across both, that is equivalent to a 180degrees rotation.3.3.8.1 DiscussionThe X and Y axis to consider are thosefrom the graded piece referential.3.3.9 graded piece, nexplicit description of one or
13、 morespecific sizes of a pattern piece, and related information used toproduce it.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 Dec. 1, 2007. Published January 2008.
14、2For 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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box
15、C700, West Conshohocken, PA 19428-2959, United States.3.3.10 graded piece repetition, ninstance of a gradedpiece in a graded style.3.3.10.1 DiscussionA graded piece may have severalgraded piece repetitions if its geometry is repeated severaltimes in the graded style. A graded piece repetition can be
16、:3.3.10.2 unflippedthe repetition geometry is the gradedpiece geometry.3.3.10.3 X flippedthe repetition geometry is obtained byan X flip of the graded piece geometry.3.3.10.4 Y flippedthe repetition geometry is obtained by aY flip of the graded piece geometry.3.3.10.5 XY flippedthe repetition geomet
17、ry is obtained bya Y flip and an X flip of the graded piece geometry.3.3.11 graded style, nexplicit description of one or morespecific sizes of a style, and related information used forproduction.3.3.11.1 DiscussionA graded style is composed of gradedpieces.3.3.12 marker, nmain object that can be ex
18、changed usingthis practice and that contains all the theoretical informationneeded to process nesting and production of a set of nestedpieces on a flat material.3.3.13 markerOrder, nset of data containing all necessaryinformation to nest a set of bundles.3.3.14 material, ndescription of the material
19、 structure. Itincludes material geometric information and optional repeatlines description.3.3.15 mutual constraint, nconstraint that applies to sev-eral nested pieces in such way that all these nested pieces mustrespect this constraint in the same way.3.3.16 nested piece, nthe smallest entity that
20、can benested. Can be nested or not.3.3.16.1 DiscussionA nested piece is an instance of agraded piece repetition and contains geometrical descriptionand positioning parameters.3.3.17 pattern piece, ndesign level description of anelementary part of a sewn product.3.3.17.1 DiscussionThe Pattern piece i
21、s a design entity,not suited for production. It is not included in the marker.3.3.18 plaid fabric, nfabric which has repeat lines in boththe X and Y directions.3.3.19 plot line, ninternal line intended to be plot.3.3.20 repeat line, nline that is a characteristic of astructured fabric and that is pe
22、riodically repeated at a knownincrement throughout the whole material.3.3.20.1 DiscussionAn X repeat line is parallel to the Xaxis and is repeated along the Y direction. Similarly, a Y repeatline is parallel to the Y axis and is repeated along the Xdirection.3.3.21 relative pattern matching, nnestin
23、g specificationwhere nested pieces positions are mutually constrained to havethe same offset (non-symmetrical matching) or opposite offset(symmetrical matching) in regard to a repeat line.3.3.22 shrinkage, ndimensional reduction that a materialwill undergo in the part of the processing that will fol
24、low thecutting phase.3.3.22.1 DiscussionTwo-dimensional anisotropic shrink-age is modeled by two one-dimensional coefficients (X shrink-age and Y shrinkage) that represent respectively the reductionfactor that will later apply along each of the X andYdirections.3.3.23 splice mark, ngeometrical infor
25、mation requestedto start the spreading process over again at correct positionafter it has been interrupted due to material physical defectprocessing.FIG. 1 Absolute MatchingFIG. 2 Unflipped and Flipped GeometriesD73310723.3.24 split, noperation that cuts a piece in two sub partsat marker processing
26、time.3.3.25 symmetric pair, nset of two graded piece repeti-tions or nested pieces that differ only by one X or Y flip onefrom the other and that may ask to be symmetrically processed.3.3.25.1 DiscussionBoth sleeves of a shirt are often partof a symmetric pair. Symmetric pairs are often issued fromd
27、ouble X or double Y graded piece repetitions.3.3.26 tilt, nangular tolerance within which a nested pieceis allowed to be rotated around its otherwise specified position.3.3.27 waste, narea of unused material versus total mate-rial area.4. Summary of Practice4.1 This practice represents a marker cont
28、aining:4.1.1 The description of the material used for production,4.1.2 The quantities of pieces that are to be nested and to beproduced,4.1.3 The description of piece geometries,4.1.4 The description of nesting constraints, and4.1.5 The description of piece positions.5. Significance and Use5.1 This
29、practice is intended to allow marker data exchangebetween nesting software or CAM systems.5.2 The pieces description, exported by a CAD system, isdedicated to CAM systems.6. General Structure6.1 This practice defines a tree-based structure composed ofelements.6.2 Full description is available in an
30、XML Schema fileappended to this practice, where elements as referenced in 6.1are mapped to XML elements or XML attributes.6.3 The root element of this tree structure is the Marker.6.4 UnitsThis practice allows for information to be ex-changed using the international metric system or using theImperia
31、l system. Only one measure system can be usedthroughout the whole Marker Data Exchange file.6.4.1 If using metric system:6.4.1.1 Angles are expressed in degrees, with an optionaldecimal part introduced by a dot.6.4.1.2 Lengths, positions and distances are expressed incentimeters, with an optional de
32、cimal part introduced by a dot.6.4.1.3 Surfaces are expressed in square centimeters, withan optional decimal part introduced by a dot.6.4.2 If using Imperial system:6.4.2.1 Angles are expressed in degrees, with an optionaldecimal part introduced by a dot.FIG. 3 Example of Striped Fabric Described Us
33、ing X Repeat LinesFIG. 4 Relative MatchingD73310736.4.2.2 Lengths, positions and distances are expressed ininches, with an optional decimal part introduced by a dot.6.4.2.3 Surfaces are expressed in square inches, with anoptional decimal part introduced by a dot.7. Marker7.1 MarkerNameName of the ma
34、rker concerned by thispractice.7.2 MarkerlnformationInformation about marker genera-tion.7.2.1 userName(optional) Name of the user who gener-ated the marker file.7.2.2 creationDate(optional) Creation date of the marker.7.2.3 modificationDate(optional) Date of the last markermodification.7.2.4 platfo
35、rm(optional) Vendor name of the applicationthat generated the marker file.7.2.5 application(optional) Application name that gener-ated the marker file.7.2.6 applicationVersion(optional) Version of the applica-tion that generated the marker file.7.3 Marker Attributes:7.3.1 unitsValue is either “Metri
36、c” or “Imperial”.7.3.2 effciency(optional) Value of the current efficiencywhen at least one piece is nested.7.3.3 waste(optional) Value of the current waste when atleast one piece is nested.7.3.4 cutDistance(optional) Sum of all cut lines lengths.7.3.5 plotDistance(optional) Sum of all plot lines le
37、ngths.7.3.6 pieceArea(optional) Area of all cut pieces includingblocking.7.3.7 notchCount(optional) Number of notches.7.3.8 drillCount(optional) Number of drills.7.3.9 styleCount(optional) Number of styles.7.3.10 bundleCount(optional) Number of bundles.7.3.11 pieceCount(optional) Number of pieces.7.
38、3.12 addedPieceCount(optional) Number of addedpieces.FIG. 5 Marker High Level SchemaD73310747.3.13 unplacedPieceCount(optional) Number of un-placed pieces.7.3.14 placedPieceCount(optional) Number of placedpieces.7.3.15 sizeCount(optional) Number of different sizes.7.3.16 achievedLength(optional) Mar
39、ker length.7.4 MarkerOrder (see Section 8).7.5 GradedStyleList (see Section 9).7.6 BundleList (see Section 11).7.7 NestedPieceList (see Section 12).7.8 SpliceMarkList (see Section 13).7.9 NotchDefinition (see Section 14).7.10 DrillDefinition (see Section 15).7.11 ConstraintList (see Section 16).8. M
40、arkerOrder8.1 The MarkerOrder contains the specification of the ma-terial, the description of the bundles that are to be produced andtheir quantities.8.1.1 costingMarker(optional) Boolean value indicatingwhether or not the marker is dedicated to cost evaluation.8.1.2 automaticMarker(optional) Boolea
41、n value indicat-ing whether or not the marker has been generated by anautomatic nesting engine.8.1.3 effciencyGoal(optional) Value of the targeted effi-ciency.8.1.4 lengthGoal(optional) Value of the targeted markerlength.8.2 OrderNameName of the marker order.8.3 MarkerMaterialDescription of the mate
42、rial.8.3.1 name(optional) Name of the material.8.3.2 description(optional) Comment used to describe thematerial.8.3.3 length(optional) Maximum marker length.8.3.4 widthWidth of the marker in the crosswise graindirection when the material is spread.8.3.4.1 DiscussionIn case of tubular or book fold sp
43、read-ing, marker width represents the half of the fabric width.8.3.5 xShrinkage(optional) Percentage of shrinkage thatthe fabric would undergo along the X axis after being cut.8.3.6 yShrinkage(optional) Percentage of shrinkage thatthe fabric would undergo along the Y axis after being cut.8.3.7 sprea
44、dCharacteristic(optional) Type of spreading.Only the following values are allowed: “SinglePly,” “FaceTo-Face,” “BookFoldTop,” “BookFoldBottom” or “Tubular.” If nospreadCharacteristic is specified, “Single Ply” is assumed.8.3.8 fabricCategoryMaterial fabric category.8.3.9 PrimaryRepeatLine(optional)
45、Description of onemain repeat line. There are at most two main repeat lines.8.3.9.1 stepRepetition length of the PrimaryRepeatLine,perpendicular to it.8.3.9.2 angleAngle between x axis and the repeat line.8.3.9.3 repeatNameUnique name of this repeat line.8.3.9.4 x,yCoordinates of a point that belong
46、s to thePrimaryRepeatLine.8.3.9.5 RepeatLine(optional) Repeat lines that are parallelto their associated PrimaryRepeatLine. They are defined fromthe PrimaryRepeatLine.8.3.9.6 offsetShortest distance between the PrimaryRe-peatLine and the repeat line.8.3.9.7 repeatNameUnique name of this repeat line.
47、8.3.10 MaterialBuffering(optional) Buffering valuesadded on each edge of the material. These values modify thenesting area dimensions.8.3.10.1 upBuffer(optional) Buffer value on up materialedge.8.3.10.2 downBuffer(optional) Buffer value on down ma-terial edge.8.3.10.3 leftBuffer(optional) Buffer val
48、ue on left materialedge.FIG. 6 MarkerOrder SchemaD73310758.3.10.4 rightBuffer(optional) Buffer value on right ma-terial edge.8.4 StyleSizedQuantityDescribes a set of bundles to nest.8.4.1 FabricTypeUsed to filter the pieces of the style thathave to be nested.8.4.2 StyleNameThe name of the style from
49、 which thebundles to nest are issued.8.4.3 SizeNameThe size of the bundles to nest.8.4.4 Quantity(optional) Defines the quantities of bundlesto nest in this set of bundles. If no Quantity is specified,unflipped = 1, quantityFlipX = 0, quantityFlipY = 0, quantity-FlipXY = 0 is assumed.8.4.4.1 quantityFlipNone(optional) Quantity of bundleswith no initial flip.8.4.4.2 quantityFlipX(optional) Quantity of bundles withan initial X flip.8.4.4.3 quantityFlipY(optional) Quantity of bund
