Device and method for a layerwise manufacturing of a 3-dimensional object from a building material in powder form

摘要

A method is provided, by which a three-dimensional object is manufactured by a subsequent solidification of layers of a building material in powder form at the positions in the respective layer that corresponds to the cross-section of the object by means of the action of a laser or another energy source,
wherein as building material in powder form a material is used which contains the old powder that has remained as unsolidified powder in the manufacturing of one or more previously formed objects and a proportion of new powder that has not been used before in any manufacturing process,characterized in thatthe building material in powder form is mechanically consolidated when a layer is applied.

主权项

1. Device for manufacturing a three-dimensional object by a subsequent solidification of layers of a building material in powder form at those positions in the respective layers corresponding to the cross-section of the object by the action of a laser or another energy source having
a support, on which the object is built, an application device for applying layers of a powder material onto the support or a previously solidified layer in a work plane, wherein the application device is movable in at least one application direction across the support or the previously solidified layer, a solidification device for solidifying the powder material at those positions in the respective layer that correspond to the object, the application device further comprises a blade the blade having two surfaces that are extending substantially perpendicular to the work plane and are aligned substantially in parallel to each other, the blade further having a planar application surface that rises in the direction of the application, wherein the application surface is provided at the bottom side of the blade facing the support, and the planar application surface rises at an angle, which is larger than 1.43° and smaller than 2.86° in the direction of movement of the application device.