Method and device for the additive production of workpieces

摘要

The present invention relates to an apparatus and a method for the additive production of workpieces and a use. Workpieces that can be produced by the method are, for example, turbine blades, but any other geometries can also be produced. The device for the additive production of workpieces comprises at least one radiation source, at least one lowerable lifting surface, at least one material reservoir for a raw material in powder form and at least one process chamber, wherein the lifting surface between a starting position in the influence region of the radiation source and an end position below the initial position is movable, and itself between the starting position and end position, a construction volume for the additive production of workpieces extends, wherein at least one filler body occupying a partial volume of the construction volume is arranged in this and the lifting surface has an outer shape, which allows the lifting surface relative to the packing by the volume from the initial position to the end position.