Eos Gmbh Electro Optical Systems

Eos Gmbh Optical Systems

Jochen Philippi

Gerd Cantzler

Hans Perret

Thomas Mattes

Stefan Paternoster

Thomas Halder

Stephan Gronenborn

Peter Keller

Gero Heusler

Michael Göth

Ralf Conrads

Siegfried Schimitzek

Holger Joachim Moench

Andreas Baumann

Andrea Weichselbaumer

Holger Moench

Alexander Schilling

Andreas Lohner

Peter Holfelder

Rainer Salzberger

Robert Jelin

Siegfried Schmitzek

Andrë Danzig

Helmar Langer

Christoph Seyfert

André Danzig

Michael GÖTH

Disclosed is a method for providing control data for manufacturing a three-dimensional object including accessing computer-based model data of at least one portion of the object, at least one data model specifying the scanning of locations of the region to be selectively solidified, using at least one beam along a first trajectory and a second trajectory substantially parallel thereto, the motion vectors of the beams in the construction plane having mutually opposite directional components during the scan along the two trajectories, and the distance between a starting point of the second trajectory and an end point of the previously scanned first trajectory is less than half a beam width of the beam at the end point of the first trajectory; and providing control data of the at least one data model for the generation of a control data set.

Hatch reversal with keyhole transfer

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

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 of manufacturing an object comprises applying a layer of building material in powder form having a predetermined thickness onto a layer of the building material already previously applied which has been solidified in a region corresponding to a cross section of the object. A recoater is moved in a direction across the layer already previously applied, and the building material is solidified in a shape corresponding to a cross section of the object. Prior to the application of a layer, for a solidified region having a thickness in the layer applied before, the maximum of the product of the extension of this region in movement direction of the recoater and the thickness is determined and during the application of the layer, at least an additional powder amount proportional to the value of the maximum is additionally provided.

Method and device for metering building material in a generative production method

A calibration ledge serves for calibrating a manufacturing device for manufacturing a three-dimensional object by a layer-by-layer solidification of a building material at the points corresponding to the respective cross-section of the object by selectively irradiating layers of the building material with a radiation in a working plane. The calibration ledge has an elongated shape and includes an aperture ledge extending in its longitudinal direction and comprising several aperture openings arranged in a row in the longitudinal direction of the calibration ledge which are more permeable for the radiation of the irradiation device than the region of the aperture ledge surrounding the aperture openings.

Device and method for calibrating a device for generatively manufacturing a three-dimensional object

A method for manufacturing a three-dimensional object by a layer-by-layer application and selective solidification of a building material in powder form in a device. The method includes applying a powder layer of the building material to a build area on an application surface of the device by a recoater moving in a movement direction across the application surface, selectively solidifying the applied powder layer at positions corresponding to a cross-section of the object to be manufactured, and repeating the steps of applying and selectively solidifying until the object is completed. A height of the applied powder layer is varied at least across a section of the powder layer along the movement direction of the recoater.

Method for manufacturing a three-dimensional object

A calibration device () for an apparatus () for layerwise production of a three-dimensional object () by layerwise solidification of building material () at the locations corresponding to the cross section of the object to be produced in the respective layer by means of at least two energy beams () includes a housing () and a sensor () which is arranged in the housing. The sensor serves to receive the at least two energy beams and to output an output signal as a function of the intensity of the energy beams. The housing has at least two through-openings () for transmitting the at least two energy beams, which are arranged so that their central axes intersect on a surface of the sensor.

Calibration device and calibration method for an apparatus for producing an object in layers

A method for automatically calibrating a device for generatively producing a three-dimensional object () comprises the following steps: irradiating an applied layer of a material () or a target by means of a first scanner () in order to produce a first test pattern () in the material () or the target; irradiating the applied layer of the material () or the target by means of a second scanner () in order to produce a second test pattern () in the material () or the target; detecting the first and second test patterns () by means of a camera () and assigning the first and second test patterns () to the first and second scanners (), respectively; comparing the first and/or the second test pattern () with a reference pattern and/or comparing the first and second test patterns () with one another; determining a first deviation of the first test pattern () from the reference pattern and/or a second deviation of the second test pattern () from the reference pattern and/or a relative deviation between the first test pattern () and the second test pattern (); and calibrating the first and/or the second scanner () in such a way that the first and/or the second deviation from the reference pattern and/or the relative deviation between the first test pattern () and the second test pattern () falls below a setpoint value.

Method for automatic calibration of a device for generative production of a three-dimensional object

A method for manufacturing a three-dimensional object layer by layer by applying and selectively solidifying a constituent material in powder form layer by layer by supply of energy has the steps: applying a layer () of the powdery constituent material () having a pre-determined height (h) onto a support () or a previously at least selectively solidified layer of the constituent material, and supplying energy () from an energy source () into the applied layer at positions corresponding to the cross sectional area of the object to be manufactured for selectively solidifying the constituent material. The step of applying the layer having the pre-determined height (h) is subdivided into a step of applying a first partial powder layer () having a first height (h) which is smaller than the pre-determined height (h), and a step of at least applying a second partial powder layer () having a second height (h) which is smaller than the pre-determined height (h), wherein the total height. (h+112+ etc.) of the applied partial powder layers (, etc.) corresponds to the pre-determined height (h), and between the step of applying the first partial powder layer and the step of applying the second and possibly further partial powder layers, the powder layer applied last is heated.

Manufacturing a three-dimensional object layer by layer

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 process chamber for a processing of a material by means of a directed beam of electromagnetic radiation is provided, which comprises an optical element () for coupling the beam () into the process chamber (), wherein the optical element has a surface () facing the inside of the process chamber, a wall section () surrounding the optical element (), a first inlet () for a gas that is arranged at one side of the optical element () and designed such that an escaping first gas flow () strokes substantially tangentially over the surface () of the optical element (), a second inlet () for a gas, which is designed and arranged such that an escaping second gas flow () flows at a distance to the surface () in substantially the same direction as the first gas flow ().

Process chamber and method for processing a material by a directed beam of electromagnetic radiation, in particular for a laser sintering device

The present invention relates to a method and a device for calibrating an irradiation device of an apparatus for generatively manufacturing a three-dimensional object. The calibration includes steps of arranging an image converter plate () in or in parallel to a working plane of the apparatus, wherein the image converter plate () outputs detectable light (), when the irradiation device irradiates predetermined positions of the image converter plate () with energetic radiation; of scanning the image converter plate () by the irradiation device; of detecting the detectable light () by a light detector (); of determining coordinates of the irradiation device, when the detected light () is detected; of comparing the determined coordinates with predetermined reference coordinates; and of calibrating the irradiation device on the basis of a deviation between the determined coordinates and the reference coordinates.

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Gräfelfing, Germany

Jochen Philippi