Method and apparatus for ensuring the dimensional constancy...

G - Physics – 05 – B

Patent

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Details

G05B 19/402 (2006.01) B25J 9/16 (2006.01)

Patent

CA 2646537

The invention relates to a method for ensuring the dimensional constancy of multisegment physical structures, in particular aircraft structures, during assembly, having the following steps: a spatially-fixed three-dimensional coordinate system (90) which encloses the subsequent assembled physical structure is set up; a plurality of segments (31, 32, 33) of the physical structure to be assembled are introduced into the spatially-fixed three-dimensional coordinate system (90) ; the positions of the individual segments (31, 32, 33) and of already assembled groups of segments (31, 32, 33) are recorded repeatedly within the spatially- fixed three-dimensional coordinate system (90) during assembly; and the position of a respective segment (31, 32, 33) or of a respective already assembled group of segments (31, 32, 33) is corrected if a respective record shows that the positions of the respective segment (31, 32, 33) or of the respective already assembled group of segments (31, 32, 33) is outside a tolerance band, which is predetermined in accordance with a desired dimensional constancy, by a respective predetermined nominal value.

L'invention concerne un procédé permettant de garantir la précision dimensionnelle de structures physiques à segments multiples, notamment de structures d'aéronef, au cours de leur assemblage. Le procédé comprend les étapes consistant à : définir un système de coordonnées tridimensionnel (90) fixe dans l'espace incorporant la structure physique à assembler ; introduire une pluralité de segments (31, 32, 33) de la structure physique dans le système de coordonnées tridimensionnel (90) fixe dans l'espace ; à relever à plusieurs reprises au cours de l'assemblage les positions des segments individuels (31, 32, 33) et de groupes de segments (31, 32, 33) déjà assemblés dans le système de coordonnées tridimensionnel (90) fixe dans l'espace ; et à corriger la position d'un segment respectif (31, 32, 33) ou d'un groupe respectif de segments (31, 32, 33) déjà assemblé si un relevé respectif indique que les positions du segment respectif (31, 32, 33) ou du groupe respectif de segments (31, 32, 33) déjà assemblé sortent d'une valeur nominale prédéterminée respective d'un intervalle de tolérance déterminé en fonction d'une précision dimensionnelle souhaitée.

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