A method and device for shaping structural parts

B - Operations – Transporting – 21 – D

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B21D 31/06 (2006.01) B21D 11/08 (2006.01) B21D 53/92 (2006.01) B24C 1/00 (2006.01) B24C 1/04 (2006.01) B24C 1/10 (2006.01) C21D 7/06 (2006.01)

Patent

CA 2412092

The invention relates to a method for shaping structural parts, in particular, those for use in aviation and space travel. The structural parts comprise a plate-shaped base body and ribs. Said ribs are longitudinally extended, are approximately parallel to one another, are joined to the base body while forming one piece, and protrude from the base body in orthogonal manner. The part is shaped by particles of an abrasive, which strike the surface areas of the structural part at a high velocity whereby effecting a plastic material shaping. The aim of the invention is to realize a method that can be carried out in a simple and cost-effective manner with which diverse uniaxial and multiaxial part geometries can be attained. To this end, the invention provides that opposite surface areas of the ribs, said surface areas being located on opposite longitudinal sides of each rib, are simultaneously subjected to the action of particles of the abrasive.

L'invention concerne un procédé pour le formage d'éléments de structure, notamment d'éléments utilisés dans l'industrie aéronautique et aérospatiale. Les éléments de structure présentent un corps de base en forme de plaque et des nervures allongées et à peu près parallèles entre elles, reliées en une pièce au corps de base et partant à peu près à angle droit du corps de base. Le formage de l'élément se fait par des particules d'un produit de grenaillage qui bombardent à grande vitesse des zones de surface de l'élément de structure et provoquent une déformation plastique de la matière. L'invention vise à créer un procédé d'exécution simple et économique permettant d'obtenir des géométries d'éléments multiples à un ou à plusieurs axes. A cet effet, des zones de surface opposées des nervures, situées sur des faces longitudinales opposées de chaque nervure, sont simultanément sollicitées avec des particules du produit de grenaillage.

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