Eos Gmbh Electro Optical Systems

Maximilian Mittermüller

Michael Göth

Robert Achim Domröse

Martin Schade

Markus Kuchenbaur

Martin Leuterer

Alexander Schilling

Albert Fruth

Sebastian Mehl

Dominik Wolf

Ulrich Schmid

Michael Kowal

A control method serves for controlling at least one solidification device of an additive manufacturing device for manufacturing a three-dimensional object by means of an additive layer build method in which at least one object is manufactured by repeated application of a layer of a building material to a build area and by selective solidification of the applied layer at positions corresponding to a cross-section of the object to be manufactured, wherein a gas having a plurality of flow directions which essentially are not aligned in the same direction flows across the build area. The method includes receiving and/or determining a distribution of the flow directions of the gas above the build area, assigning a reference flow direction to an area of the build area in dependence on the distribution of the flow directions above the area, controlling the solidification device to solidify at least a part of the cross-section of the object to be produced in dependence on a reference flow direction above the area of the build area in which the respective part of the cross-section is positioned.

Device and method for the generative production of a three-dimensional object

The invention relates to a computer-assisted method for generating a control data set for an additive layer manufacturing device. In a first step, a layer data set is accessed, wherein points are marked in the data model which correspond to an object cross-section and at which the bid-up material should be solidified. In a second step, the layer data set is modified in such a way that for at least a portion of the object cross-section, the number of beams required for solidifying the build-up material inside said portion is determined preferably automatically, according to quality specifications of the portion and/or a manufacturing time of the object. In a third step, the modified layer data set is provided as a control data set for the additive layer manufacturing device.

Exposure strategy in multiple-beam am systems

Method for calibrating an apparatus for manufacturing a three-dimensional object by layer-wise selective solidification of building material with the step of generating an substantially periodic first modulation pattern in a first sub-area of the build area, the step of generating an substantially periodic second modulation pattern in a second sub-area of the build area, wherein in the overlap zone, the first modulation pattern and the second modulation pattern form an substantially periodic superposition pattern, whose period is larger than the period of the first modulation pattern and the period of the second modulation pattern, the step of detecting the superposition pattern, and the step of determining the deviation of the position of the superposition pattern on the build area from a reference position.

Method for calibrating an apparatus for manufacturing a three-dimensional object

The invention refers to a method of generatively manufacturing a three-dimensional object () in a process chamber () of a generative manufacturing apparatus () by a layer-by-layer application and selective solidification of a building material () within a build area () arranged in the process chamber. In the course of this, while the object is being manufactured, a process gas is supplied to the process chamber by means of a gas supply device and is discharged from the process chamber via an outlet (). According to the invention, the gas supply device is designed and/or arranged relatively to the build area and/or controlled such that a gas stream () of the process gas streaming through the process chamber is shaped in such a manner that a substantially elongate oval impingement area (A) of the gas stream () is generated within the build area ().

Method and apparatus for generatively manufacturing a three-dimensional object

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Munich, Germany

Maximilian Mittermüller