Knowledge-based parametric design of mechanical products based on configuration design method

Parametric modeling and configuration design methods are key technologies f or mass customization in manufacturing. This paper describes the parametric modeling process of machine tool, and proposes a framework which parametri cally models a machine tool assembly based on a design expert system. The c oncept of design unit, which is one level higher than functional feature, a nd the parametric modeling concept with functional features have been propo sed. The domain knowledge in the knowledge-base has been mapped to the geom etry of the CAD system. A design expert system to redesign assemblies of a machine tool has been implemented, because commercial CAD systems cannot ha ndle the parametric design of assemblies. This system consists of a commerc ial expert system shell, a design knowledge-base, and a commercial CAD syst em with an API program. The API program interfaces the expert system with t he CAD system through a GUI. (C) 2001 Elsevier Science Ltd. All rights rese rved.