A feature-based approach to extracting machining features

Abstract

Feature-based modeling has been considered an indispensable tool for integrating design and manufacturing processes. In this paper, we propose a new approach to extracting machining features from a feature-based design model, based on an integrated geometric modeling system that supports both feature-based modeling and feature recognition. Feature recognition is achieved through an incremental feature converter. The incremental feature converter not only keeps the design model consistent, but also incrementally extracts machining features from design features as a design evolves. By combining the strength of feature-based design and feature recognition, the proposed approach can handle feature interactions and protrusion features effectively so that it deals with a large set of complex design models. Moreoever, the incremental nature makes it possible for the design process to be an ongoing negotiation between the design and the manufacturing planner at the initial design stage. (C) 1999 Elsevier Science Ltd. All rights reserved.