Eos Gmbh Electro Optical Systems

Mtu Aero Engines Ag

Robert Achim Domröse

Michael Göth

Alexander Schilling

Maximilian Mittermüller

Dominik Wolf

Thomas Hess

Marc Dimter

Martin Schade

Tatu Syvänen

Andre Danzig

Michael Hutzel

Markus Kuchenbaur

Kevin Minet

Jorg Hamann

Martin Leuterer

Albert Fruth

Markus Frohnmaier

Ulrich Schmid

Pilvi Ylander

Olli Nyrhilä

Jörg Hamann

Stefan Fröbe

Katri Kakko

Joachim Wichner

Harald Häger

Michael Kowal

André Danzig

Michael GÖTH

Maximilian MITTERMÜLLER

Thomas Heß

Harald HÄGER

Stefan FRÖBE

Michael Frey

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

The present invention relates to a method for the production of a three-dimensional object () by way of layered solidification of a powder construction material () by way of electromagnetic radiation, in particular laser radiation, having the steps: scanning points, which correspond to a cross section of the object () to be produced, of an applied layer of the powder construction material () with an electromagnetic beam () from a radiation source () for purposes of selectively solidifying the powder construction material (), conducting a gas flow () across the applied layer during the scanning with the electromagnetic beam () and performing an irregularity determination with regard to the presence of a process irregularity with regard to at least one process parameter during the production, wherein during the scanning by way of the electromagnetic beam (), the scanning process at least one present point of the cross section to be solidified is interrupted on the basis of a result of the irregularity determination.

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

Disclosed is a method of determining a quality indicator of an object that has been manufactured by layer-wise additive manufacturing. The method includes providing a first dataset that is assigned to a process monitoring device, detecting a relative frequency of occurrence of a process irregularity in a layer and of assigning a grade indicator value to the solidified object cross-section in a layer according to the detected relative frequency, generating a second dataset, in which a grade indicator value is assigned to the object cross-section in each of said several layers following upon one another, and determining a quality indicator by using the second dataset (or several further datasets).

Method and device of detecting part quality of a three dimensional manufacturing object

A method for producing a three-dimensional object by applying layers of a pulverulent construction material and by selectively solidifying said material by the action of energy comprises the steps: a layer of the pulverulent construction material is applied to a support or to a layer of the construction material that has been previously applied and at least selectively solidified; an energy beam from an energy source sweeps over points on the applied layer corresponding to a cross-section of the object to be produced in order to selectively solidify the pulverulent construction material; and a gas flow is guided in a main flow direction (RG) over the applied layer during the sweep of the energy beam. The main flow direction (RG) of the gas flow (G) and the sweep direction (RL) of the energy beam are adapted to one another at least in one region of the cross-section to be solidified.

Method and device for producing a three-dimensional object

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

A device is disclosed for producing a three-dimensional object by layerwise construction. The device contains a flow device for generating a gas flow above an applied layer of the building material by means of a nozzle element for introducing the gas into the device. The nozzle element includes a body with a gas inlet side and a gas outlet side, and channels which penetrate the body from the gas inlet side to the gas outlet side, provided with inlet openings on the gas inlet side and gas outlet openings on the gas outlet side, and which are separated by walls. The length of the channels is selected such that a laminar flow is formed at the gas outlet side.

Device and method for producing a three-dimensional object layer-by-layer

An exposure control device serves for equipping and/or retrofitting a generative layer-wise building device. The exposure control device has a first data output interface, at which control commands can be output to the exposure device. The control commands specify one of a plurality of exposure types defined by a predetermined combination of a radiation energy density to be emitted by the exposure device and a scanning pattern with which the radiation is being directed to a region of a layer of the building material. The exposure control device also includes a second data output interface at which an exposure type can be output in real time in relation to a timing of the output of a control command specifying this exposure type.

Device and method of exposure control in a device for producing a three-dimensional object

A method for producing a three-dimensional object () by applying layers of a pulverulent construction material () and by selectively solidifying said material by the action of energy comprises the steps: a layer of the pulverulent construction material () is applied to a support () or to a layer of the construction material that has been previously applied and at least selectively solidified; an energy beam () from an energy source () sweeps over points on the applied layer corresponding to a cross-section of the object () to be produced in order to selectively solidify the pulverulent construction material (); and a gas flow () is guided in a main flow direction (RG) over the applied layer during the sweep of the energy beam (). The main flow direction (RG) of the gas flow (G) and the sweep direction (RL) of the energy beam () are adapted to one another at least in one region of the cross-section to be solidified.

Growing community of inventors

Germering, Germany

Robert Achim Domröse