Trumpf Laser- Und Systemtechnik Gmbh

Matthias Allenberg-Rabe

Markus Pieger

Frederik Schaal

Marc Gronle

Valentin Blickle

Philipp Wagenblast

Jürgen Ortmann

Detlef Breitling

Damien Buchbinder

Joachim Wagner

Uwe Huber

Frank Peter Wuest

Johannes Bauer

Michael Thielmann

Bjoern Ullmann

Florian Krist

Björn Ullmann

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 disclosure provides methods of additive manufacture of components in layers in a powder bed by at least two laser beams that can be deflected two-dimensionally over the same powder bed region. Each laser focal spot is projected onto the power bed and is or is set to a diameter of less than or equal to 300 μm. Components to be produced in the powder bed region are manufactured by each of the laser beams, and each individual surface contour of the component is manufactured solely by one of the laser beams.

Methods for the additive manufacture of components in layers, and corresponding computer program products

The present disclosure relates to calibrating scanner devices for positioning laser beams in a processing field, and includes, e.g.: arranging a retroreflector in the processing field of the scanner device, the processing field being formed in a processing chamber for irradiating powder layers; detecting laser radiation reflected back into the scanner device when the laser beam passes over the retroreflector; determining an actual position of the laser beam in the processing field using the detected laser radiation; and calibrating the scanner device by correcting a laser beam target position specified for the scanner device in the processing field using the determined actual position of the laser beam in the processing field.

Calibrating a scanner device

The disclosure relates to processing machines and methods for producing three-dimensional components by irradiating powder with a processing beam, the machines including a container with a moveable support for the powder, as well as an irradiating device with a scanner device for aligning the processing beam on a processing field at an opening of the container. The irradiating device includes a heating device that includes a heating radiation source for generating a heating beam for heating the powder from above and including a beam shaping optical unit configured to convert a first beam profile of the heating beam into a second beam profile, e.g., a ring-shaped beam profile, of the heating beam.

Processing machines and methods for heating a powder to produce three-dimensional components

An irradiating device for irradiating a machining field with a machining beam, in particular with a laser beam, for carrying out a welding process, is provided. The irradiating device includes a beam scanner for aligning the machining beam to a machining position in the machining field. The irradiating device has an imaging device for imaging a part-region of the machining field on a pyrometer which has at least two pyrometer segments. The imaging device images thermal radiation which emanates from the machining position in the machining field on a first pyrometer segment, and images thermal radiation which emanates from a position in the machining field being situated ahead of or behind the machining position along an advancing direction of the machining beam in the machining field on at least one second pyrometer segment. A machine tool having such an irradiating device is also provided.

Irradiating a machining field

The present disclosure relates to a method for determining a beam profile of a laser beam, which is positioned by a scanner device in a processing field. The method includes: arranging at least one retroreflector in the processing field for irradiating powder layers of the scanner device; detecting laser radiation reflected back into the scanner device while the laser beam is scanned over the retroreflector; and determining the beam profile of the laser beam by using the laser radiation detected during the scanning travel over the retroreflector.

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Stuttgart, Germany

Matthias Allenberg-Rabe