Device for producing freely formed products through a build-up of layers of powder-form material, has powder spread over a lowerable table, and then solidified in layers by a laser energy source

摘要

The device comprises a (relatively) lowerable table (1), and a powder feed (7) above the table. A distribution device (8) spreads the powder in a predetermined thickness over the table, and a energy source solidifies the powder of each layer. The table and energy source are horizontally movable with respect to each other. The energy source may be a laser (10) beam which is directed by a optical system (11). The horizontal movement of the table consists in a rotational movement around an vertical axis, and this movement is combined with the descending movement into a spiral movement having a pitch corresponding to the layer thickness, the powder feed, the distribution device. The energy source is arranged radially around the axis and is continuously active. The layers of powder-form material are built up and then solidified according to specification.