ASTM D6673-04
(Practice)Standard Practice for Sewn Products Pattern Data Interchange-Data Format
Standard Practice for Sewn Products Pattern Data Interchange-Data Format
SIGNIFICANCE AND USE
This standard practice is designed to facilitate two-dimensional, sewn pattern piece data exchange between CAD systems at the level of pattern design. It also facilitates grade rule table data exchange for sewn products in the apparel industry. It uses the DXF file format for pattern piece data exchange and a specially formatted ASCII file format for grade rule tables. It is limited to the transfer of pattern pieces within a style and the associated pattern piece and style information. It does not support the transfer of numerical cutter instructions; plotter instructions, complete marker-laying or spreading information, or product data specification information.
SCOPE
1.1 This standard is designed to facilitate communication between CAD/CAM systems that represent two-dimensional flat pattern pieces. This standard also provides conventions for representing related information such as grade rule tables. This standard is not intended to represent the relationships between pattern pieces or the correspondence between 2D or 3D sewn product pattern piece geometries.
1.2 The file format for the pattern data exchange file defined by this standard (Practice D 6673) complies with the Drawing Interchange File (DXF) format. Autodesk, Inc. developed the DXF format for transferring data between their AutoCAD(r) product and other software applications. This standard documents the manner in which pattern data should be represented within the DXF format. Users of this standard should have Autodesk, Inc.'s documentation on Drawing Interchange Files, found in the AutoCAD Reference Manual, in order to assure compatibility to all DXF format specifications. The AutoCAD Version 13 DXF specification is to be used. The file format for the grade rule table exchange file is an ASCII text file.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation:D6673–04
Standard Practice for
1
Sewn Products Pattern Data Interchange—Data Format
This standard is issued under the fixed designation D6673; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1.1 Discussion—The application of a grade rule will be
oriented to the grade reference line unless an alternate grade
1.1 This standard is designed to facilitate communication
reference line is specified. (See grade reference line.)
between CAD/CAM systems that represent two-dimensional
3.1.2 annotation text, n—optional user defined text that can
flat pattern pieces. This standard also provides conventions for
be displayed when the pattern piece is plotted.
representing related information such as grade rule tables.This
3.1.3 base size, n—the digitized or created size of a style.
standard is not intended to represent the relationships between
3.1.3.1 Discussion—Base size is a synonym of sample size.
pattern pieces or the correspondence between 2D or 3D sewn
(See sample size.)
product pattern piece geometries.
3.1.4 block, n—a DXF keyword that is used to identify a
1.2 Thefile formatforthepatterndataexchangefile defined
section of the file that has information about one object.
by this standard (Practice D6673) complies with the Drawing
3.1.4.1 Discussion—a block keyword should be used to
Interchange File (DXF) format. Autodesk, Inc. developed the
identify the start of information for a pattern piece and the
DXF format for transferring data between their AutoCAD(r)
section should be ended with an endblk keyword.
product and other software applications. This standard docu-
3.1.5 curve interpolation point, n—points generated be-
ments the manner in which pattern data should be represented
tween curve points by a curve interpolation algorithm in a
within the DXF format. Users of this standard should have
CAD vendor’s system to create a curve which represents a
Autodesk, Inc.’s documentation on Drawing Interchange Files,
contour.
found in the AutoCAD Reference Manual, in order to assure
3.1.6 curve point, n—a user defined point on a contour.
compatibility to all DXF format specifications. The AutoCAD
3.1.6.1 Discussion—When a curve interpolation algorithm
Version 13 DXF specification is to be used. The file format for
is used to generate a curve, the resulting curve must pass
the grade rule table exchange file is an ASCII text file.
through all user defined curve points. (See curve interpolation
1.3 This standard does not purport to address all of the
points, validation curve)
safety concerns, if any, associated with its use. It is the
3.1.7 curve tolerance, n—the maximum perpendicular dis-
responsibility of the user of this standard to establish appro-
tance that the resulting curve can deviate from the original
priate safety and health practices and determine the applica-
curve after transferring the data for the first time.
bility of regulatory limitations prior to use.
3.1.7.1 Discussion—Sufficient points should be added by
2. Referenced Documents theoriginatingsystemtokeeptheshapeofthecurvewithinthe
user defined curve tolerance.
2.1 ANSI/AAMA Standard:
3.1.8 cut lines, n—the outside edges of a pattern piece used
ANSI/AAMA-292A
as a guide for cutting out the pattern piece. (See piece
3. Terminology
boundary.)
3.1.9 drill hole, n—a point that is part of a pattern piece that
3.1 Definitions of Terms Specific to This Standard:
is not part of any line.
3.1.1 alternate grade reference line, n—an optional internal
3.1.9.1 Discussion—Drill holes may be used to denote
line whose orientation is used for the x axis of a grade rule.
pocket or buttonhole placement.
3.1.10 entities, n—a DXF keyword that is used to identify
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ThispracticeisunderthejurisdictionofASTMCommitteeD13onTextilesand
the section of the DXF file describing file identification
is the direct responsibility of Subcommittee D13.63 on Sewn Product Automation.
information.
Current edition approved March 1, 2004. Published March 2004. Originally
3.1.10.1 Discussion—Style system text must be placed in
approved in 2001. Last previous edition approved in 2001 as D6673–01. DOI:
10.1520/D6673-04. the entities section of the DXF file.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D6673–04
3.1.11 graded nest, n—a collection of pieces that represent 3.1.29 sample size, n—the base size from which grade rule
every size in the size line for a particular pattern piece. values are established.
3.1.30 sewlines,n—internallinesthatindicatewher
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