Device and method for a layerwise manufacturing of a three-dimensional object

US7946840B2 · kind B2 · utility

Assignee

• EOS GmbH Electro Optical Systems · DE

Inventors

• Hans Perret · Munich, DE
• Thomas Halder · Munich, DE
• Jochen Philippi · Munich, DE
• Peter Keller · Bruchmühlbach-Miesau, DE
• Gerd Cantzler · Schwanau, DE
• Michael Göth · Munich, DE
• Siegfried Schmitzek · Munich, DE

Key dates

• Filing date: Nov 19, 2007
• Grant date: May 24, 2011
• Expiry date: Mar 28, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S425/812
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A device for manufacturing a three-dimensional object by a layer-wise solidification of a building material in powder form at positions in the respective layers corresponding to the object is disclosed. The device comprises: a container (25) arranged in the device; a support device (26), which can be vertically moved in the container, wherein the upper side of the support device (26) forms a building platform (78), on which the three-dimensional object is generated layer-wise; an application device (27) for applying building material in powder form onto the building platform and a previously solidified layer, respectively; and an energy source (6) that provides a beam (9) for solidifying the building material in powder form. In a region below the container (25) in the device (1) outlets (90) are provided, wherein from each of the outlets (90) a directed flow of a fluid medium escapes in a directed manner to peripheral regions of the container (25).