Workpiece cleaning device, cleaning process and manufacturing process

Abstract

The invention relates to a device for cleaning a workpiece produced by means of additive production from a granular and/or powdery production material and/or for removing excess granular and/or powdery production material after additive workpiece production. The device comprises a housing in which a workpiece mounting is arranged on which or on which the produced workpiece can be arranged. In or on the housing at least one conveyor is arranged to convey, in particular, excess production material, away from the housing interior. At least one movable nozzle is arranged on at least one movable nozzle arm in the housing interior, such that the workpiece and the housing interior can be acted upon by at least one flow of the cleaning fluid during a cleaning cycle in which the workpiece and/or housing interior are purged of, in particular, excess production material. At least one nozzle rotation is provided, in which the nozzle can be rotated about at least one nozzle rotation axis relative to the nozzle arm. At least one arm trajectory movement and/or at least one arm rotation is provided, in which the nozzle arm can be moved and/or rotated relative to the workpiece mounting along at least one arm trajectory and/or about at least one arm rotation axis. The rotational speed of the nozzle rotation and the speed of the arm movement and/or the arm rotation are constituted such that during a cleaning cycle the flow of the cleaning fluid assumes all, or almost all, flow directions within the housing interior, such that the whole surface, or almost the whole surface, of the workpiece and of the housing interior, can be exposed to the cleaning flow from all, or almost all, directions.