Abstract:
The paper presents the development of a new design system that allows the composition of a design from manufacturable features. The system contains several modules: hierarchical design-for-manufacture rule system, manufacturing feature library, manufacturing feature-based design module, designer advisory module, manufacturing feature recognition module, and design analysis module.
Keywords: Manufacturing Feature Based Design, Feature Extraction, Design for Manufacture
By: T. Szecsi
School of Mechanical and Manufacturing Engineering, Materials Processing Research Centre, Dublin City University, Dublin 9, Ireland

Hi. I am impressed with your proposed design system. I would just like to know when you mentioned "Exit surfaces of drilled holes should be perpendicular to the drill axis" rule (DFM rule) that is violated for a problem shown in Figure 11, the rules are in semantics. Did the system accept semantic rules and automatically detect the problem i.e. it understands what and where is the exit surface, drilled hole, perpendicular and drill axis? or do the designer has to define all (if so please elaborate how he is doing it)?