Method for calibrating a laser machining system
OwnerTom Walde, Rüdiger Moser +2inventors
InventorsTom Walde, Rüdiger Moser, Li Wen Chang, Dennis Hornbacher
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Abstract
A method for calibrating a laser machining system includes a scanner device for deflecting a laser beam to a plurality of positions on a surface and includes an observation device, an observation beam path of which runs coaxially to the laser beam path over the scanner device. The method includes calibrating the scanner device and calibrating the observation device. A laser machining system for machining a workpiece by means of a laser beam with a control configured to carry out said method is also provided.
Claims16
A method for calibrating a laser machining system including a scanner device for deflecting a laser beam to a plurality of positions on a surface and including an observation device, an observation beam path of which runs at least partially coaxially with the laser beam path and over said scanner device, comprising calibrating said scanner device with the steps of:
- generating laser markings on a calibration plate at a plurality of predetermined scanner settings;
- capturing an image respectively of said calibration plate and of a calibration pattern on said calibration plate, the calibration pattern having periodically arranged pattern cells, by means of said observation device and determining a marking position of at least one of the laser markings on said calibration plate with respect to the calibration pattern in each image;
- and
- determining scanner calibration data for each of the predetermined scanner settings based on the determined marking positions in order to assign a position in a world coordinate system to the predetermined scanner settings.
Dependencies are inferred from the claim text.