Slm Solutions Group Ag

Nikon Slm Solutions Ag

Lukas Roesgen

Jan Wilkes

Andreas Wiesner

Christiane Thiel

Dieter Schwarze

Toni Adam Krol

Henner Schoeneborn

Daniel Brueck

Karsten Huebinger

Naveed Iqbal

Birk Hoppe

Arne Neef

Felix Mutz

Simon Steven

Simon Mueller

Henner SCHÖNEBORN

The invention relates to a method for controlling an irradiation system (), the irradiation system () being used in a device () for the additive manufacturing of three-dimensional workpieces and comprising at least three irradiation units (-), the method comprising the following steps: a) defining an irradiation region (-) for each of the irradiation units (-), the irradiation regions (-) each comprising a portion of an irradiation plane () which extends parallel to a carrier () of the device (), and the irradiation regions (-) being defined such that they overlap in a common overlap region (); b) irradiating a raw material powder layer on the carrier () to produce a workpiece layer; c) arranging a further raw material powder layer on the already jetted raw material powder layer to produce a further workpiece layer. d) The invention also relates to a device for performing this method.

Method and device for controlling an irradiation system for producing workpieces

The application relates to a device for producing three-dimensional workpieces, the device including: a structural surface designed to receive a molding compound; and an irradiation arrangement designed to selectively irradiate the molding compound on the structural surface with electromagnetic radiation, in order to produce a workpiece by means of generative layer construction, where the irradiation device comprises a plurality of irradiation units, the irradiation units being designed to irradiate an individual region of the structural surface respectively associated with the irradiation units, and where the beams emitted by the irradiation units respectively have a cross-sectional surface corresponding to between approx. 2% and approx. 170% of the surface of the respectively associated individual region. The application also relates to the use of such a device and to a method for producing three-dimensional workpieces by means of such a device.

Production of three-dimensional workpieces by means of a plurality of irradiation units

We describe a calibration method for calibrating one or more optical elements of an additive layer manufacturing apparatus useable for producing a three-dimensional workpiece, the method comprising: projecting, using the one or more optical elements, an optical pattern onto a material in order to prepare, from said material, solidified material layers using an additive layer manufacturing technique to form a test sample; determining a geometry of the test sample; comparing the determined geometry with a nominal geometry to generate calibration data; and calibrating the one or more optical elements using said calibration data.

Method and apparatus for calibrating optical elements

The invention relates to an apparatus () for producing a three-dimensional workpiece, comprising:

Apparatus and method for producing large workpieces by means of a mobile production unit

A powder delivery device for providing raw material powder to a powder application device of a powder bed fusion apparatus is provided. The powder delivery device comprises a powder supply section configured to receive raw material powder, the powder supply section comprising an outlet for providing the raw material powder to the powder application device. The powder delivery device further comprises a first physical parameter determining unit arranged at a first location of the powder supply section and configured to determine a first physical parameter in the powder supply section, and a controller configured to determine whether the first physical parameter meets a first tolerance criterion, and a powder treatment unit. The controller is configured to instruct the powder treatment unit to perform a powder treatment in case it determines that the first physical parameter does not meet the first tolerance criterion.

Powder delivery device and powder delivery method for providing raw material powder to a powder application device of a powder bed fusion apparatus

A device for calibrating an irradiation system of an apparatus for producing a three-dimensional work piece includes a control unit to control the irradiation system so as to irradiate a radiation beam onto an irradiation plane according to a calibration pattern. The device also includes a sensor arrangement arranged in the irradiation plane to output signals to the control unit in response to being irradiated with the radiation beam according to the calibration pattern. The control unit generates a digital image of an actual irradiation pattern produced by the radiation beam incident on the sensor arrangement based on the signals output by the sensor arrangement, compares the digital image of the actual irradiation pattern with a digital image of a reference pattern so as to determine a deviation between the actual irradiation pattern and the reference pattern, and calibrates the irradiation system based on the determined deviation between the actual irradiation pattern and the reference pattern.

Device and method for calibrating an irradiation system of an apparatus for producing a three-dimensional work piece

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Luebeck, Germany

Lukas Roesgen