Trumpf Laser- Und Systemtechnik Gmbh

Universitãt Stuttgart

Marc Gronle

Markus Pieger

Matthias Allenberg-Rabe

Frederik Schaal

Valentin Blickle

Wolfgang Osten

Klaus Körner

Philipp Wagenblast

Wolfram Lyda

Bjoern Ullmann

Tobias Boettcher

Sven Schweikert

Nicolai Essig

Björn Ullmann

Klaus KÖRNER

A method for operating a manufacturing device for additive manufacturing of a three-dimensional object includes irradiating a subregion of a build material within a building zone in which a beam of a beam source is directed onto the build material by a scanning unit. An amount of energy introduced is chosen such that the build material is solidified, so that a subregion of the three-dimensional object to be manufactured is formed. The method further includes controlling at least one irradiation parameter that characterizes the irradiation such that the irradiation parameter lies in a process window that changes location-dependently over an area of the building zone. The process window presets a relationship between a sensor signal detected by a sensor unit and permissible values for the irradiation parameter.

Method for operating a device for additive manufacturing of a three-dimensional object

The disclosure provides methods for calibrating processing machines for the production of 3D components by irradiation of powder layers, wherein the processing machine includes a scanner device for positioning a laser beam in a processing field in which a height-adjustable construction platform for the application of the powder layers by sweeping at least two, e.g., three markings, e.g., in the form of spherical retroreflectors, which are applied on the construction platform and/or on a preform, by the laser beam, detecting laser radiation reflected back from the markings into the scanner device, determining actual positions of the markings, determining deviations of the actual positions of the markings from setpoint positions of the markings, and calibrating the processing machine by correcting the positioning of the laser beam and/or the position of the construction platform using the determined deviations. The disclosure also relates to associated processing machines.

Methods for calibrating a processing machine, and processing machines

A method for operating a powder bed-based manufacturing device for additive manufacturing of a component from a powder material includes taking at least one optical recording of a working powder layer of the powder material on a construction location of the manufacturing device, locally evaluating the at least one optical recording, and examining the working powder layer for local coating errors using the evaluation of the at least one optical recording.

Method for operating a manufacturing device and manufacturing device for the additive manufacturing of a component from a powder material

The invention relates to methods and to devices for generating multispectral illuminating light having an addressable spectrum, for adaptive multispectral imaging and for capturing structural and/or topographical information of an object or of the distance to an object. The illuminating device comprises a multispectral light source and a modulator for temporal modulation of the individual spectral components of the multispectral light source having modulation frequencies. The multispectral light source comprises at least one light source having a continuous, quasi-continuous, or frequency comb spectrum and wavelength-dispersive means, or an assembly or array of monochromatic or quasi-monochromatic light sources having emission wavelengths or emission wavelength bands which are different from one another in each case. The modulator comprises at least one electrically controllable three-dimensional light modulator, or a plurality of electronic control modules assigned to the individual monochromatic or quasi-monochromatic light sources.

Method and device for generating multispectral or hyperspectral light, for hyperspectral imaging and/or for distance measurement and/or 2D or 3D profile measurement of an object by means of spectrometry

Growing community of inventors

Stuttgart, Germany

Marc Gronle