Substantial research efforts have been spent on feature applications towards the integration of CAD and downstream manufacturing functions such as process planning. However, the majority of contemporary feature-based systems cannot handle the interactions of features in practical applications. Feature interactions cause problems in feature recognition as well as feature-based design systems. This paper presents an approach to represent and analyse features in a feature- Based design system. In this system, a part is modelled by volumetric machining Features, which are then decomposed into air volumes and material volumes.
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