Eos Gmbh Electro Optical Systems

Peter Keller

Hans Perret

Thomas Halder

Jochen Philippi

Michael Göth

Gerd Cantzler

Thomas Mattes

Andreas Pfister

Mandy Gersch

Albert Fruth

Siegfried Schimitzek

Andrea Weichselbaumer

Markus Schmidtner

Stefan Paternoster

Martin Leuterer

Hans J Langer

Stefan Grünberger

Christian Wilkening

Johann Oberhofer

Frank Müller

Andreas Hotter

Frank Muller

Siegfried Schmitzek

Florian Wendt

Karl Freihart

Anton Mayer

Michael GÖTH

A process for producing a three-dimensional object by selectively layer-by-layer solidification of a powdery material layer at the locations corresponding to the cross-section of the object in a respective layer by exposure to electromagnetic radiation. The powdery material comprises at least one polymer which is obtainable from its melt only in substantially amorphous or completely amorphous form, or a polyblend which is obtainable from its melt only in substantially amorphous or completely amorphous form. The powdery material has a specific melting enthalpy of at least 1 J/g.

Process for producing a three-dimensional object

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 manufacturing method for generatively manufacturing a three-dimensional object by a layer-by-layer application and selective solidification of a building material includes applying a layer of the building material within a build area by means of a recoater moving in a recoating direction across the build area, selectively solidifying the applied layer of the building material at points corresponding to a cross-section of the object to be manufactured by means of a solidification device, and repeating the steps of applying and solidifying until the three-dimensional object is completed. A local action confined to a region between the recoating unit moving across the build area and the solidification device and/or compaction device moving behind the recoating unit across the build area is performed on the applied layer of the building material.

Method and device for a generative manufacturing of a three-dimensional object

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:

A method is presented that makes possible the labelling of powders that can be applied as building material in a layer-additive manufacturing method such as a selective laser sintering method. To this effect the powder is mixed with at least one salt of a metal of the rare earths, wherein the salt has the property that it shows a luminescence when being irradiated with photons having a wavelength outside of the visible spectrum or with particle radiation. Thereby, parts that have been manufactured by means of the layer-additive manufacturing method can be identified with regard to the manufacturer, the place of manufacture or the manufacture date.

Method for identifying laser sintering powders

A method for a layer-wise manufacturing of a three-dimensional object has a first step of providing a layer of a material in powder form or a liquid material on a support or a layer that has already been solidified at selected positions previously and a second step of directing a focussed photon or particle beam (') selectively at selected positions of the layer. In the second step, the photon or particle beam is selected such that it brings about a change of the absorption of the material when hitting the layer. After the termination of the second step, a third step is carried out, in which the layer is irradiated by means of electromagnetic radiation (&#x2032;) such that the material is homogenously solidified at those positions of the layer that correspond to the cross-section of the object to be formed.

Method for a layer-wise manufacturing of a three-dimensional object

A device () for manufacturing a three-dimensional object by a layer wise solidification of a building material at positions in the respective layers that correspond to the object is provided. A feed () that supplies the building material to a building space () in the device () and at least two filler portions () that are provided at the feed () and are independent from one another are provided, wherein one connector () is provided for each building material supply container () in order to supply the building material from outside of the device ().

Method for supplying a building material

Device for a layerwise manufacturing of a three-dimensional object

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 () arranged in the device; a support device (), which can be vertically moved in the container, wherein the upper side of the support device () forms a building platform (), on which the three-dimensional object is generated layer-wise; an application device () for applying building material in powder form onto the building platform and a previously solidified layer, respectively; and an energy source () that provides a beam () for solidifying the building material in powder form. In a region below the container () in the device () outlets () are provided, wherein from each of the outlets () a directed flow of a fluid medium escapes in a directed manner to peripheral regions of the container ().

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

A device () for applying layers or a powder material () by means of an application device () is described, wherein the application device () can be moved back and forth between two end positions in order to apply a layer of material () and the application device () comprises a blade () for removing excess material during the application of a layer of material (). The device () is characterized by a material transport device (), by which the material can be transferred from one side of the blade () to the other side of the blade. The device has the particular advantage that layers of material () can be applied without any loss of material and is particularly applicable in a laser sintering device.

Device and method for applying layers of a powder material onto a surface

A device () for manufacturing a three-dimensional object by a layerwise solidification of a building material at positions in the respective layers corresponding to the object is provided. The device comprises a machine frame () and a building space () located in said machine frame, wherein in the building space () there are arranged: an application device () that applies layers of the building material onto a support device () and a previously solidified layer, respectively, by means of an application element (); a dosage device () that supplies building material from a building material accommodation region () to the application device () for an application; and a heating device () for heating the applied layers of the building material. The building material accommodation region () is limited by a wall that has a double-wall structure, so that a hollow space () is formed therein.

A device () for manufacturing a three-dimensional object by a layer wise solidification of a building material at positions in the respective layers corresponding to the object is provided. The device comprises a building field, in which the solidification of the material in powder form takes place; an application element (), that applies the building material in powder form in the form of a layer; and a drive mechanism () that moves the application element () across the building field in order to apply the layer of the building material. The drive mechanism () is configured such that for the application of layers it moves the application element () between a first end position on a first side of the building field and a second end position on an opposite second side of the building field on a circular path back and forth.

In a laser sintering method for producing a three-dimensional object wherein subsequent layers of the object to be formed are subsequently solidified on positions corresponding to the object, as a build-up material, a powder is used wherein the upper grain limit of the powder particles is below 100 &#x3bc;m, the D-value is below 55 &#x3bc;m, the BET-surface is smaller than 5 m/g and the grains of the powder basically have a spherical shape.

Rounded-particle plastic powder in particular for application in laser sintering, method for production of such a powder and laser sintering process using such a powder

A process and a device for producing a three-dimensional object is provided, with which process or device the object is produced by layer-wise solidification of a pulverulent material by sintering of the material at the points corresponding to the cross-section of the object by means of the action of radiation energy. The process comprises the application of a layer of the pulverulent material onto a substrate or a previously sintered layer, pre-heating of the pulverulent material to a working temperature below the temperature at which the powder is sintered and sintering of the material at the points corresponding to the cross-section of the object in the layer, wherein a step of controlled heating of an applied powder layer and of determining the quantity of heat taken up by the powder per (FIG.) temperature interval for at least two temperature intervals is carried out.

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Krailling, Germany

Peter Keller