Features in integrated modelling of products and their production

Abstract

This paper summarizes the reasons for considering new ways of modelling products and processes. Three different concepts for describing parts and products are described including different types of features, skeletons and hierarchical models. Two approaches for linking CAD and CAPP, namely feature recognition and feature-based design, are discussed and compared with the problem of either integrating or interfacing design and process planning activities. Results from a literature survey on feature-based design and feature definitions are described with the conclusion that feature definitions used are very different. A design-oriented manufacturing process database (MADED) and a feature-based CAD and CAPP system (DEPF), which currently are being developed at the Technical University, are presented.