Multiple-Way Feature Conversion to Support Concurrent Engineering

摘要

A new approach to feature modeling that supports concurrent engineering ispresented. In this approach, multiple feature views of a product are distinguished, each with its own feature model. Feature models are specified declaratively, and model validity in each view is maintained. Consistency between the views is maintained by feature conversion. A feature model is represented at three levels: feature, canonical shape, and evaluated geometry level. At the feature level, parameterized solids and validation constraints are combined in generic feature definitions, specified in an object-oriented language. Each view has its own extendible set of generic features. At the canonical shape level, the feature model is validated by maintaining all constraints specified in the views. At the evaluated geometry level, a central cellular model is maintained, which links the various views. (Copyright (c) 1994 by Faculty of Technical Mathematics and Informatics, Delft, The Netherlands).