Standard Terminology for Additive Manufacturing—Coordinate Systems and Test Methodologies

SIGNIFICANCE AND USE
3.1 Although many additive manufacturing systems are based heavily upon the principles of Computer Numerical Control (CNC), the coordinate systems and nomenclature specific to CNC are not sufficient to be applicable across the full spectrum of additive manufacturing equipment. This terminology expands upon the principles of ISO 841 and applies them specifically to additive manufacturing. Although this terminology is intended to complement ISO 841, if there should arise any conflict, this terminology shall have priority for additive manufacturing applications. For any issues not covered in this terminology, the principles in ISO 841 may be applied.  
3.2 Furthermore, this terminology does not prescribe the use of any specific existing testing methodologies or standards that practitioners of AM may wish to employ for testing purposes; however, it is expected that practitioners will employ appropriate existing methodologies and standards to test parts made by AM.
SCOPE
1.1 This terminology includes terms, definitions of terms, descriptions of terms, nomenclature, and acronyms associated with coordinate systems and testing methodologies for additive manufacturing (AM) technologies in an effort to standardize terminology used by AM users, producers, researchers, educators, press/media, and others, particularly when reporting results from testing of parts made on AM systems. Terms included cover definitions for machines/systems and their coordinate systems plus the location and orientation of parts. It is intended, where possible, to be compliant with ISO 841 and to clarify the specific adaptation of those principles to additive manufacturing.Note 1—The applicability of this standard to cladding has to be evaluated. Discussions are under progress.  
1.2 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.

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Historical
Publication Date
14-Jul-2011
Current Stage
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
´2
Designation: F2921 − 11
StandardTerminology for
Additive Manufacturing—Coordinate Systems and Test
1
Methodologies
This standard is issued under the fixed designation F2921; 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
ε NOTE—References ISO 527 and ISO 6892 were added editorially in August 2012.
2
ε NOTE—Note 1 was added editorially in September 2012.
3
1. Scope 2.2 ISO Standard:
ISO 841 Industrial Automation Systems and Integration—
1.1 This terminology includes terms, definitions of terms,
Numerical Control of Machines—Coordinate System and
descriptions of terms, nomenclature, and acronyms associated
Motion Nomenclature
withcoordinatesystems and testing methodologies foradditive
ISO 527 (all parts), Plastics — Determination of tensile
manufacturing (AM) technologies in an effort to standardize
properties
terminology used by AM users, producers, researchers,
ISO 6892-1 Metallic materials — Tensile testing – Part 1:
educators, press/media, and others, particularly when reporting
Method of test at room temperature
results from testing of parts made on AM systems. Terms
included cover definitions for machines/systems and their
3. Significance and Use
coordinate systems plus the location and orientation of parts. It
3.1 Although many additive manufacturing systems are
is intended, where possible, to be compliant with ISO 841 and
based heavily upon the principles of Computer Numerical
to clarify the specific adaptation of those principles to additive
Control (CNC), the coordinate systems and nomenclature
manufacturing.
NOTE 1—The applicability of this standard to cladding has to be specific to CNC are not sufficient to be applicable across the
evaluated. Discussions are under progress.
full spectrum of additive manufacturing equipment. This ter-
minology expands upon the principles of ISO 841 and applies
1.2 This standard does not purport to address all of the
them specifically to additive manufacturing. Although this
safety concerns, if any, associated with its use. It is the
terminology is intended to complement ISO 841, if there
responsibility of the user of this standard to establish appro-
should arise any conflict, this terminology shall have priority
priate safety and health practices and determine the applica-
for additive manufacturing applications. For any issues not
bility of regulatory limitations prior to use.
covered in this terminology, the principles in ISO 841 may be
2. Referenced Documents
applied.
2
2.1 ASTM Standards:
3.2 Furthermore,thisterminologydoesnotprescribetheuse
D638 Test Method for Tensile Properties of Plastics
of any specific existing testing methodologies or standards that
E8/E8M Test Methods for Tension Testing of Metallic Ma-
practitioners of AM may wish to employ for testing purposes;
terials
however, it is expected that practitioners will employ appro-
F2792 Terminology for Additive Manufacturing
priate existing methodologies and standards to test parts made
,
Technologies
by AM.
1
This terminology is under the jurisdiction of ASTM Committee F42 on
4. Terminology
Additive Manufacturing Technologies and is the direct responsibility of Subcom-
4.1 Definitions—Definitions shall be in accordance with
mittee F42.01 on Test Methods.
Current edition approved July 15, 2011. Published September 2011. DOI:
Terminology F2792 and the following:
10.1520/F2921–11E02.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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F2921 − 11
Terms and Definitions—AM Machines and their Coordinate Systems
DISCUSSION—This is a universal origin reserved for the purpose of
build platform, n—of a machine, any base which provides a
identifying the location of parts within the build volume. (See A1.1 and
surface upon which the build is started and supported
A1.2).
throughout the build process (see A1.1).
machine origin, n—origin as defined by the original equip-
DISCUSSION—The machine build platform may be solid or perforated
and made from a wide variety of materials and constructions.
ment manufacturer. Synonyms: machine home, machine zero
point.
DISCUSSION—In some systems the parts are built attached to the
...

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