A Framework for an Object/Rule-Based Automated Fixture Design System

Abstract

Fixture design has traditionally been regarded as a manual process due to extensive requirements of heuristic knowledge and skilled craftsmanship. This paper presents a famework for automated fixture design using a solid modeller, an object/rule-based expert system and × Window. Geometric and textual information are extracted from the solid modeller to determine the type of operation and number of set-ups required. Locating, supporting and clamping planes and points are identified using rule-based as well as mathematical analysis. The final output represents fixture assembly sequences and the feasibility for robotic assembly is also discussed. © 1991 CIRP.