Arrangement and method for production of a three dimensional...

B - Operations – Transporting – 22 – F

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B22F 3/105 (2006.01) B29C 67/00 (2006.01)

Patent

CA 2507698

Arrangement for producing a three-dimensional product, which arrangement comprises a work table on which said three-dimensional product is to be built up, a powder dispenser which is arranged so as to distribute a thin layer of powder on the work table for forming a powder bed, a radiation gun for delivering energy to the powder, fusing together of the powder then taking place, means for guiding the beam emitted by the radiation gun over said powder bed for forming a cross section of said three-dimensional product by fusing together parts of said powder bed, and a control computer in which information about successive cross sections of the three-dimensional product is stored, which cross sections build up the three-dimensional product, where the control computer is intended to control said means for guiding the radiation gun over the powder bed according to an operating scheme forming a cross section of said three-dimensional body, said three-dimensional product being formed by successive fusing together of successively formed cross sections from by the powder dispenser, and method for producing a three- dimensional product using such an arrangement.

Cette invention se rapporte à un système de production d'un objet tridimensionnel, qui comprend une table de travail sur laquelle l'objet tridimensionnel doit être constitué, un distributeur de poudre qui est destiné à distribuer une mince couche de poudre sur la table de travail en vue de former un lit de poudre, un diffuseur de rayonnement destiné à appliquer une énergie à la poudre, de façon à agglomérer celle-ci par fusion, un moyen destiné à guider le faisceau émis par le diffuseur de rayonnement sur le lit de poudre, afin de former une section transversale de l'article tridimensionnel par fusion des parties du lit de poudre et un ordinateur de commande dans lequel sont mémorisées les informations concernant les sections transversales successives de l'article tridimensionnel, lesquelles vont constituer l'article tridimensionnel. Cet ordinateur de commande est conçu pour commander le moyen de guidage du diffuseur de rayonnement sur le lit de poudre en fonction d'un schéma opérationnel formant une section transversale de l'article tridimensionnel. L'article tridimensionnel est formé par fusion successive des sections transversales successivement formées à partir du distributeur de poudre. Cette invention concerne également un procédé de production d'un article tridimensionnel au moyen d'un tel système.

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