Advanced modelling for cad/cam systems

This volume presents the results of research work performed within ESPRIT Project 322 'CAD Interfaces (CAD I)'. It describes the concept for a methodology and guidelines to extend geometric modelling systems by modelling functions for the design of technical products. These functions are based on providing more semantics and design operations. A two-level concept for extending geometric modelling functions is presented: geometric associative functions and technical functions reflecting technical terms and technical form features are defined. For the implementation of an advanced modelling system, a specification for procedural interfaces and the description of a user interface are given as typical examples.