US 12,434,328 B2
Calibration of a quality estimator for a laser cutting method
Andreas Luedi, Burgdorf (CH); Roland Bader, Ruetschelen (CH); and Stefan Alfons Jacobi, Bad Westernkotten (DE)
Assigned to BYSTRONIC LASER AG, Niederönz (CH)
Appl. No. 18/577,615
Filed by BYSTRONIC LASER AG, Niederönz (CH)
PCT Filed May 30, 2022, PCT No. PCT/EP2022/064584
§ 371(c)(1), (2) Date Jan. 8, 2024,
PCT Pub. No. WO2023/285018, PCT Pub. Date Jan. 19, 2023.
Claims priority of application No. 21184974 (EP), filed on Jul. 12, 2021.
Prior Publication US 2024/0261890 A1, Aug. 8, 2024
Int. Cl. B23K 26/03 (2006.01); B23K 31/00 (2006.01); G01D 18/00 (2006.01)
CPC B23K 26/032 (2013.01) [B23K 31/006 (2013.01); G01D 18/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for calibrating a real-time estimator model of a real-time estimator with a calibration data set generated by a calibration module that includes a calibration model, the method comprising steps of:
cutting a workpiece by a laser cutting machine performing a cutting method;
loading a quality estimation result generated by the real-time estimator model of cutting performed by the laser cutting machine, wherein the quality estimation result is determined on a basis of sensor signals input to the real-time estimator model, wherein the sensor signals are received from at least one sensor, wherein the at least one sensor is configured as an optical sensor;
detecting measurement signals of a cutting edge of a cut workpiece by a measuring device after cutting, wherein the measuring device is an optical measuring device;
providing a quality measurement result of the cutting edge of the workpiece, wherein the quality measurement result of the cutting edge is based on the detected measurement signals;
comparing the quality estimation result with the quality measurement result to generate a comparison result, wherein a position identifier is assigned and/or stored for the detected sensor signals and for the detected measurement signals, wherein the detected sensor signals are assigned to the detected measurement signals based on their position identifiers, and based on the comparison result, only if deviations that are determined exceed a preconfigurable threshold value, executing steps of:
calculating a calibration data set, by the calibration model, for calibrating the real-time estimator model, and
calibrating or readjusting the real-time estimator model using the calibration data set.