Eos Gmbh Electro Optical Systems

Thomas Mattes

Jochen Philippi

Stefan Paternoster

Stephan Gronenborn

Gero Heusler

Gerd Cantzler

Ralf Conrads

Peter Keller

Johann Oberhofer

Holger Joachim Moench

Thomas Halder

Christian Wilkening

Mandy Gersch

Jochen Weidinger

Holger Moench

Hans Perret

Lutz Reichmann

Ludger Hümmeler

Frank Müller

Andreas Baumann

Andreas Lohner

Markus Frohnmaier

Peter Holfelder

Andreas Hotter

Marius Christ

Harald Turck

Anoush Aghajani-talesh

Heiko Pfisterer

Malin Gerg

Bernhard Graf

Robert Hofmann

Anton Mayer

Anoush Aghajani-Talesh

The invention describes a laser printing system () for illuminating an object moving relative to a laser module of the laser printing system () in a working plane (), the laser module comprising at least two laser arrays of semiconductor lasers and at least one optical element, wherein the optical element is adapted to image laser light emitted by the laser arrays, such that laser light of semiconductor lasers of one laser array is imaged to one pixel in the working plane of the laser printing system, and wherein the laser printing system is a 3D printing system for additive manufacturing and wherein two, three, four or a multitude of laser modules () are provided, which are arranged in columns (c, c) perpendicular to a direction of movement () of the object in the working plane (), and wherein the columns are staggered with respect to each other such that a first laser module () of a first column of laser modules (c) is adapted to illuminate a first area (y) of the object and a second laser module () of a second column (c) of laser modules is adapted to illuminate a second area (y) of the object, wherein the first area (y) is adjacent to the second area (y) such that continuous illumination of the object is enabled.

Laser printing system

Plastic powder for use as a building material for manufacturing a three-dimensional object by layer-by-layer melting and solidification by hardening of the building material at the positions corresponding to the cross-section of the three-dimensional object in the respective layer by exposure to radiation, preferably by exposure to NIR radiation, wherein the plastic powder comprises a dry blend of polymer-based particles and particles of a NIR absorber, wherein the NIR absorber comprises carbon black or is carbon black and wherein the weight percentage of carbon black in the total weight of polymer and carbon black particles is in the range of at least 0.02% and at most 0.45%, and/or wherein the carbon black has a mean primary particle diameter in the range of from 15 nm to 70 nm, preferably of at least 26 nm and/or at most 58 nm.

Polymer-based build material for selective sintering

A measuring system serves for equipping or retrofitting a device for manufacturing a three-dimensional object by selective layerwise solidification of a building material. The device includes an irradiator for selectively irradiating a layer of the building material applied in a working plane of the device at locations corresponding to a cross-section of the object to be manufactured. The irradiator includes at least two irradiation units, and each irradiation unit can be projected onto a pixel in the working plane and can be at least switched on and off. The measuring system includes at least one camera for determining and evaluating the radiation emitted by the irradiator and/or the position and/or orientation of the irradiation unit(s) in absolute and/or relative to one another, and at least one distance sensor for detecting an extension in a direction (z) perpendicular to the working plane.

Measuring system for a device for the generative manufacturing of a three-dimensional object

A method and device for generating control data for an additive manufacturing device are described, wherein build-up material is built up and selectively solidified. Irradiating the build-up material on a build field with at least one energy beam occurs An impingement surface of the energy beam is moved on the build field in order to melt the build-up material in a target area in and around the impingement surface. For generating the control data, optimization criteria and/or secondary and/or boundary conditions relating to a local target temperature distribution in the target area of the build-up material are defined so that melting of the build-up material is effected as heat conduction welding. Based on this, an optimized intensity profile of the energy beam is determined, which is substantially non-rotationally symmetric at the impingement surface on the build field.

Method and device for generating control data for an additive manufacturing device

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

The present invention relates to a device for generatively manufacturing a three-dimensional object (), comprising: a frame () defining a building field () at an upper portion () thereof; a plate () which connects the frame () with a housing () of the device; a support () which is arranged in the frame () and vertically movable by a lift mechanics () at least below the building field (); a radiation device () which generates an energetic beam (') which is focused by a deflection means () to arbitrary points in the building field (), so as to selectively sinter or melt a powdery material () which is present in the building field (); a coater () for applying a layer of powdery material () onto the support () or a previously applied layer of the powdery material (). A thermal insulation () is arranged between the frame () and the plate.

Device of generatively manufacturing three-dimensional objects with insulated building field

A method of manufacturing three-dimensional objects by laser sintering is provided, the object is formed by solidifying powder material layer by layer at locations in each layer corresponding to the object by means of laser radiation, wherein an IR-radiation image in an applied powder layer is detected, characterized in that defects and/or geometrical irregularities in the applied powder layer are determined on the basis of the IR-radiation image.

Method of manufacturing three-dimensional objects by laser sintering

In a method of providing a material amount for a generative manufacturing method, a three-dimensional object () is formed by selectively solidifying layers of a material at locations corresponding to the cross-section of the object () in the respective layers. The quality of the manufactured objects is reproducibly recorded, thus, improving the method. At least one first material amount of a powder is provided, which is characterized by at least one feature. Data is detected, which relates to the at least one feature of the first material. Then, the data is stored, which relates to the at least one feature of the first material. Thus, the method can provide an identifiable powder amount used in manufacturing each layer of the object.

Method of providing an identifiable powder amount and method of manufacturing an object

There are provided a device and a method for layer-wise generative manufacturing of three-dimensional objects by selective solidification of a solidifiable building material in liquid or powder form. By a rotational movement of the building region (), in which the objects are manufactured, with respect to a material application device () for applying layers of the building materials and a solidification arrangement () the material application device () and the solidification arrangement () can be used simultaneously at different places in the building region.

Device and method for producing a three-dimensional object by means of a generative production method

Provision is made of an apparatus and a method for the manufacture of three-dimensional objects () by local solidification of layers of a building material at positions corresponding to the respective cross-section of the object (), by exposure to electromagnetic or particle radiation. The apparatus comprises a temperature measuring assembly () for non-contact measurement of the temperature of the building material in a measurement region () which is a partial region of the layer of the building material, and comprises further a position adjustment device () for altering the position of the measurement region () of the temperature measuring assembly () independently of the alteration of the position of the region exposed to the radiation energy. This apparatus can be used to actively access a not exposed region of the surface for measuring the temperature of each layer and to detect a temperature distribution by altering the position of a measurement region () in a layer.

Apparatus and method for the manufacture of a three-dimensional object

A device for manufacturing a three-dimensional object by a layerwise solidification of a building material in powder form at the positions in the respective layer that correspond to the object to be manufactured is provided. A work plane () is provided, in which successively layers of the building material in powder form, which are to be solidified, are applied and are partially solidified. An application device () for applying a layer of the building material in the work plane or onto a previously solidified layer of the building material has an application surface () facing the work plane (). An adjustment device () is provided that is constructed such that an angle (&#x3b1;) between the application surface () and the work plane () is adjustable.

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

A process is provided for producing a three-dimensional object having the steps forming the object () in a container () arranged within a process chamber () on a carrier () which can be displaced in the container by sequential selective solidification of layers of a pulverulent material () which can be solidified by the action of electromagnetic or particle radiation at positions corresponding to the cross-section of the object in the particular layer, characterized by the step of controlled removal of non-solidified pulverulent material () after completing the object ().

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Gilching, Germany

Thomas Mattes