Eos Gmbh Electro Optical Systems

Siemens Aktiengesellschaft

Albert Fruth

Peter Keller

Markus Schmidtner

Stefan Paternoster

Hans Perret

Michael Göth

Robert Achim Domröse

Martin Schade

Frank Müller

Maximilian Mittermüller

Juergen Harenberg

Markus Kuchenbaur

Michael Kowal

Frank MÜLLER

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

A device for an adjustment of a heater control includes a nominal parameter provision unit designed such that it provides at least one nominal parameter value, an actual parameter detection unit designed such that it is able to detect for at least one of the nominal parameter values the corresponding actual parameter value in a heater control or in an additive manufacturing device, wherein an actual parameter value is the actual value of a controlled variable and/or the actual value of its change with time and/or the actual value of a heater parameter and/or the actual value of its change with time, and a control change unit that automatically changes at least one control parameter value, if a predefined difference between the nominal parameter value and its corresponding actual parameter value is exceeded.

Automatic adjustment of a heater control in an additive manufacturing device

A device for an adjustment of a heater control in an additive manufacturing device, in which a heater control regulates the heating of an applied building material layer by means of a heating device () up to a work temperature (T) comprises:

The invention relates to a method for constructing a three-dimensional object () in layers from a pulverulent construction material by solidifying layers of the pulverulent construction material in a successive manner at each layer point which corresponds to a cross-section of the object, wherein the solidification process is carried out by introducing thermal energy. The method has the following step: solidifying all the layer points which correspond to a cross-section of the object. The introduced thermal energy quantity is adjusted at least in a sub-region of the layer dependent on the duration of the previous solidification step for the previous powder layer or dependent on the current solidification step duration, which is calculated in advance.

Method and device for the improved control of the energy input in a generative layer construction method

An apparatus for layerwise manufacturing of a three-dimensional object by solidification of a material, which can be solidified via electromagnetic radiation, includes a source for the electromagnetic radiation, a building space for manufacturing the three-dimensional object, a coupling window, for transmitting the electromagnetic radiation into the building space and a heating element for heating the coupling window. By the heating element the temperature of the lens is increased during the building of the three-dimensional object. By the increased temperature the accumulation of contamination on the coupling window is prevented.

Device for layerwise manufacturing of a three-dimensional object

Circuit arrangement for time-dependent monitoring of the condition of lines with a scanning device operating with the so-called 'last-look' method, which recognizes condition alterations on the line and which produces a message supplemented by the address which corresponds with the scanned line. The time-dependent evaluation is obtained by comparing an adjustable theoretical time placed in a memory with an actual time formed by a counter.

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Munich, Germany

Albert Fruth