Representation problems in feature-based approaches to design and process planning

Abstract

A major difficulty in the development of advanced and integrated CAD and CAPP systems lies in the difficulty of representing components. Here some of the problems that are often encountered are discussed and a composite component is used to demonstrate them. Possible approaches for solving some problems are proposed. The conclusion is reached that neither simple feature oriented design nor feature recognition methods alone will fulfil the requirements of advanced systems. Satisfactory modelling of the interactions between features in a component is a prerequisite to progress.