Analysis and Evaluation for STEP-Based Electromechanical Assemblies

[+] Author and Article Information
Xuan F. Zha1

Manufacturing System Integration Division, National Institute of Standards and Technology, Gaithersburg, MD 20899zha@cme.nist.gov

Sebti Foufou, Rachuri Sudarsan, Ram D. Sriram

Manufacturing System Integration Division, National Institute of Standards and Technology, Gaithersburg, MD 20899


Corresponding author.

J. Comput. Inf. Sci. Eng 6(3), 276-287 (Sep 12, 2005) (12 pages) doi:10.1115/1.2218368 History: Received November 01, 2004; Revised September 12, 2005

In this paper, we propose an integrated approach to analysis and evaluation for STEP-based (STandard for the Exchange of Product model data, officially ISO 10303) electromechanical assemblies. First, two assembly representational models are brought up and elaborated: the EXPRESS/XML schema-based model and the NIST object-oriented UML-based open assembly model (OAM). Then, these two models are integrated, in which the OAM incorporates the EXPRESS/XML schema-based assembly model to completely capture the detailed geometric information. The proposed assembly evaluation approach uses the EXPRESS/XML schema-based model as the information source, and covers not only the geometric and physical characteristics of assembly parts but also the assembly operation data necessary to assemble the parts. The feature of this approach is the linkage of the STEP product definition to the fuzzy analytic hierarchy process for assembly evaluation. The proposed approach has the flexibility to be used in various assembly methods and different environments. A case study shows the feasibility of the proposed approach.

Copyright © 2006 by American Society of Mechanical Engineers
Topics: Manufacturing
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Figure 1

Entities in the core product model

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Figure 2

Main schema of open assembly model

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Figure 3

Assembly model in EXPRESS-G (31)

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Figure 4

Integration of the above two assembly models

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Figure 5

An overview of the framework for integrated assembly evaluation

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Figure 6

Optic lens assembly



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