Advanced Modelling For Cad/cam Systems (research Reports Esprit)

Reiner Anderl The Advanced Modelling part of the CAD\*I project aimed at the development of a new generation of modelling techniques as a basic functionality of future CAD/CAM systems. The methodology and concepts for advanced modelling techniques, their availability in the communication interface of a CAD/CAM system and their influence on internal interfaces in the software architecture of a CAD/CAM system are fundamental results of advanced modelling work. These results form the basis for the development of a new generation of CAD/CAM systems which are called product modelling systems. CAD/CAM systems today mainly support the geometric description of a technical part or its description as a technical drawing. Advanced geometric modelling capabilities deal with parametric design functions embedded into CAD/CAM systems. However, development strategies for future CAD/CAM systems are directed toward the following: 1. The development of product modelling systems and 2. the development of integrated systems based on CAD, CAP (Computer Aided Planning), CAM and other CIM (Computer Integrated Manu­ facturing) functionalities. 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 Front Matter....Pages I-VI CAD*I Project Overview....Pages 1-3 Introduction....Pages 5-6 Methodology of Design....Pages 7-14 Overview of the Concept for Advanced Modelling....Pages 15-28 Geometric-Associative Modelling....Pages 29-52 Technical-Associative Modelling....Pages 53-87 Design by Features....Pages 89-93 Internal Interfaces....Pages 95-108 References....Pages 109-113