Computer aid for automatic liaisons extraction from cad based robotic assembly

Abstract

Selection of optimized assembly sequence from the available feasible assembly sequences is significantly essential to achieve cost effective manufacturing process. To achieve this, at the outset generation of feasible assembly sequences with topological, geometrical, precedence and stability constraints should be prepared. The increase of part count in a product results huge number of assembly sequences. The Liaison matrix/Liaison graph generated based on the connections between the assembly components eliminates non possible assembly sequences. In this paper, automatic extraction of liaison matrix extraction from CATIA and elimination of non-feasible assembly sequences is illustrated.