Enriching STEP Product Model With Geometric Dimension and Tolerance Information for One-Dimensional Tolerance Analysis


SARIGEÇİLİ M. İ. , Roy U., RAchuri S.

JOURNAL OF COMPUTING AND INFORMATION SCIENCE IN ENGINEERING, cilt.17, 2017 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 17 Konu: 2
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1115/1.4035269
  • Dergi Adı: JOURNAL OF COMPUTING AND INFORMATION SCIENCE IN ENGINEERING

Özet

Information exchange and sharing become a necessity for digital factory but they have been more challenging as the industry is computerized more. This is mainly because the capabilities of computerized systems have grown significantly in a very rapid pace in their own information structure, and they require to retrieve various data from different computer systems. ISO 10303-STEP has been developed to provide a neutral format for exchanging product data. However, implementation of STEP has several issues, including the following two: (1) the complete STEP file should be processed even for querying a small set of data, and (2) information required for realizing any functional activity (e.g., any analysis on any part of a product) is not explicitly identified. Hence, in this study, functionality-based conformance classes (FCCs) are developed to organize the current conformance classes (CCs) (which are the classes required to be implemented fully in order to be conformant to any particular STEP standard) for supporting different functional activities. Following the concept of data exchange specification (DEX)/template, several templates that are repeatedly used small information groups are introduced in order to create manageable sets of data constructs. In this study, the FCCs for 1D tolerance analysis are developed by enriching the available STEP information models with GD&T. The use of extended STEP models is illustrated with a case study.

Information exchange and sharing become a necessity for digital factory but they have
been more challenging as the industry is computerized more. This is mainly because the
capabilities of computerized systems have grown significantly in a very rapid pace in
their own information structure, and they require to retrieve various data from different
computer systems. ISO 10303–STEP has been developed to provide a neutral format for
exchanging product data. However, implementation of STEP has several issues, including
the following two: (1) the complete STEP file should be processed even for querying
a small set of data, and (2) information required for realizing any functional activity
(e.g., any analysis on any part of a product) is not explicitly identified. Hence, in this
study, functionality-based conformance classes (FCCs) are developed to organize the
current conformance classes (CCs) (which are the classes required to be implemented
fully in order to be conformant to any particular STEP standard) for supporting different
functional activities. Following the concept of data exchange specification (DEX)/template,
several templates that are repeatedly used small information groups are introduced
in order to create manageable sets of data constructs. In this study, the FCCs for 1D tolerance
analysis are developed by enriching the available STEP information models with
GD&T. The use of extended STEP models is illustrated with a case study.