US 12,235,619 B2
Methods for calibrating a processing machine, and processing machines
Markus Pieger, Wendlingen am Neckar (DE); Frederik Schaal, Fellbach (DE); Matthias Allenberg-Rabe, Stuttgart (DE); Valentin Blickle, Stuttgart (DE); and Marc Gronle, Stuttgart (DE)
Assigned to TRUMPF Laser- und Systemtechnik GmbH, Ditzingen (DE)
Filed by TRUMPF Laser-und Systemtechnik GmbH, Ditzingen (DE)
Filed on Oct. 9, 2020, as Appl. No. 17/066,525.
Application 17/066,525 is a continuation of application No. PCT/EP2019/057242, filed on Mar. 22, 2019.
Claims priority of application No. 102018205403.7 (DE), filed on Apr. 11, 2018.
Prior Publication US 2021/0023622 A1, Jan. 28, 2021
Int. Cl. G05B 19/401 (2006.01); B22F 10/00 (2021.01); B22F 10/28 (2021.01); B22F 10/31 (2021.01); B22F 12/44 (2021.01); B22F 12/45 (2021.01); B22F 12/49 (2021.01); B22F 12/90 (2021.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01); G05B 19/4099 (2006.01)
CPC G05B 19/4015 (2013.01) [B22F 10/00 (2021.01); B22F 10/28 (2021.01); B22F 10/31 (2021.01); B22F 12/49 (2021.01); B22F 12/90 (2021.01); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); G05B 19/4099 (2013.01); B22F 12/44 (2021.01); B22F 12/45 (2021.01); G05B 2219/49023 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for calibrating a processing machine for the production of three-dimensional components by irradiation of powder layers, wherein the processing machine comprises 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 is positioned, the method comprising:
sweeping the laser beam over at least two markings that are applied on either one or both of the construction platform and a preform fixed to the construction platform;
detecting laser radiation reflected back from the markings into the scanner device during the sweeping of the at least two markings;
determining actual positions of the markings using the detected laser radiation;
determining deviations of the actual positions of the markings from setpoint positions of the markings; and
using the determined deviations to calibrate the processing machine by:
(i) correcting a position comprising one or more of a tilt, a rotation, and a lateral offset of either one or both of the construction platform and the preform in the processing machine
or
(ii) correcting both a positioning of the laser beam in the processing field and the position of either one or both of the construction platform and the preform in the processing machine.