The first Technical Note in this series [1] introduced the international standard ISO 10303, informally known as STEP, and the second [2] dealt with some practical aspects of using the standard for the exchange of CAD models. It was noted in [1] that the current published parts of the standard are restricted to the representation and exchange of non-parameterized models. The present contribution discusses the implications of that restriction and describes the progress of the ISO TC184/SC4 committee towards its removal. As will be shown, this extension of the STEP standard will lead to considerable benefits for industry.
Issue Section:
Technical Note
1.
Pratt
, M. J.
, 2001a
, “Introduction to ISO 10303—the STEP Standard for Product Data Exchange
,” ASME J. Comput. Inf. Sci. Eng.
, 1
, No. 1
, pp. 102
–103
.2.
Pratt
, M. J.
, 2001b
, “Practical Aspects of using the STEP Standard
,” ASME J. Comput. Inf. Sci. Eng.
, 1
, No. 2
, pp. 197
–199
.3.
ISO, 1994a, ISO 10303:1994, “Industrial Automation Systems and Integration—Product Data Representation and Exchange,” Geneva, Switzerland: International Organization for Standardization (ISO).
4.
Shah, J. J., and Ma¨ntyla¨, M., 1995, Parametric and Feature-based CAD/CAM, New York: John Wiley & Sons.
5.
ISO, 1998a, ISO 13584:1998, “Industrial Automation Systems and Integration—Parts Library,” Geneva, Switzerland: International Organization for Standardization (ISO).
6.
ISO, 1998b, ISO 13584-20:1998, “Industrial Automation Systems and Integration—Parts Library—Part 20: General Resources: Logical Model of Expressions,” Geneva, Switzerland: International Organization for Standardization (ISO).
7.
Pratt
, M. J.
, and Anderson
, W. D.
, 2001
, “A Shape Modeling Applications Programming Interface for the STEP Standard
,” Computer-Aided Design
, 33
, No. 7
, pp. 531
–543
.8.
PDES Inc., 2001, http://pdesinc.aticorp.org
9.
PDES Inc., 1997, “ENGEN Data Model Version 4.6,” SCRA, Charleston, SC.
10.
Anderson, W. D., and Ansaldi S., 1998, “ENGEN Data Model: A Neutral Model to Capture Design Intent,” in G. Jacucci, G. J. Olling, K. Preiss and M. J. Wozny (eds.), CDROM Procs. of IFIP PROLAMAT’98 conference, Trento, Italy, Sept. 1998; Boston: Kluwer Academic Publishers.
11.
ISO, 2001, ISO CD 10303-108, “Industrial Automation Systems and Integration—Product Data Representation and Exchange—Part 108: Integrated Application Resource: Parameterization and Constraints for Explicit Geometric Product Models” (available on the World Wide Web at http://www.nist.gov/sc4/wg-qc/wg12/n940).
12.
ISO, 1994b, ISO 10303-11:1994, “Industrial Automation Systems and Integration—Product Data Representation and Exchange—Part 11: Description Methods: The EXPRESS Language Reference Manual,” Geneva, Switzerland: International Organization for Standardization (ISO).
13.
USPro, 1996, USPRO/IPO-100-1996, “Computer Aided Processing of Engineering Drawings and Related Documentation (IGES Version 5.3),” Charleston, SC: US Product Data Association (US National Standard).
14.
Bettig
, B.
, and Shah
, J. J.
, 2000
, “Derivation of a Standard Set of Geometric Constraints for Parametric Modeling and Data Exchange
,” Computer Aided Design
, 33
, 17
–33
.15.
ISO, 2000, ISO TC184/SC4/WG12 N527, “JNC Proposal for STEP Assembly Model for Products” (early working draft of ISO 10303-109, available on the World Wide Web at http://www.nist.gov/sc4/wg-qc/wg12/n527).
16.
ISO, 1997, ISO 10303-47:1997, “Industrial Automation Systems and Integration—Product data Representation and Exchange—Part 47: Integrated Generic Resources: Shape Variation Tolerances,” Geneva, Switzerland: International Organization for Standardization (ISO).
17.
ISO, 1999, Technical Specification TS 17450:1999, “Geometrical Product Specifications (GPS)—Model for Geometric Specification and Verification,” Geneva, Switzerland: International Organization for Standardization (ISO).
18.
ASME, 1994a, ASME Y14.5M-1994, “Dimensioning and Tolerancing,” New York: American Society of Mechanical Engineers (US National Standard).
19.
ASME, 1994b, ASME Y14.5.1M-1994, “Mathematical Definition of Dimensioning and Tolerancing Principles,” New York: American Society of Mechanical Engineers (US National Standard).
20.
Srinivasan
, V.
, 1999
, “A Geometrical Product Specification Language Based on a Classification of Symmetry Groups
,” Computer Aided Design
, 31
, No. 11
, pp. 659
–668
.21.
Capoyleas
, V.
, Chen
, X.
, and Hoffmann
, C. M.
, 1996
, “Generic Naming in Generative Constraint-based Design
,” Computer Aided Design
, 28
, No. 1
, pp. 17
–26
.22.
Kripac, J., 1995, “A Mechanism for Persistently Naming Topological Entities in History-based Parametric Solid Models,” in C. M. Hoffmann and J. R. Rossignac (eds.), Proc. 3rd ACM Symposium on Solid Modeling and Applications, Salt Lake City, UT, 17–19 May 1995; New York, ACM Press.
23.
Raghothama
, S.
, and Shapiro
, V.
, 1998
, “Boundary Representation Deformation in Parametric Solid Modeling
,” ACM Trans. Computer Graphics
, 17
, No. 4
, pp. 259
–286
.Copyright © 2001
by ASME
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