Method for Cutting out a Section of a Workpiece using a Laser Beam, and an Associated Laser Cutting Machine

摘要

This disclosure relates to methods and apparatuses for cutting out a workpiece section along a target path from a plate-shaped workpiece using a laser beam of a laser cutting machine having a first drive for moving the workpiece along a first drive axis, a second drive for moving a laser cutting head along the first drive axis. Target values of the target path of the laser beam are divided into target values for the first drive and for the second drive. Before the laser beam reaches a cutting-out end position of the workpiece section, the target values for the first drive are set to a constant value, so that after braking of the first drive, the cutting out of the workpiece section is only still executed by moving the laser cutting head and the workpiece comes to a stop at latest at the cutting-out end position.

主权项

1. A method for cutting out a workpiece section along a target path from a plate-shaped workpiece using a laser beam of a laser cutting machine, the method comprising:
determining, via at least one controller, first target values XG, corresponding to positions of a workpiece and second target values XS, corresponding to positions of a laser cutting head configured to emit a laser beam, to align the laser beam onto the workpiece as a first drive moves the workpiece along a first drive axis and as a second drive configured to align the laser beam onto the workpiece contemporaneously moves the laser cutting head along the first drive axis to cause the laser beam to traverse the target path along the workpiece; causing the first drive to drive the workpiece to move along at least a portion of the first target values XG; causing the second drive to drive the laser cutting head to move along at least a portion of the second target values XS; and setting the first target values XG to a constant drive axis target value via the at least one controller from a point in time before the laser beam reaches a cutting-out end position (F) of the workpiece section and by at least a braking time of the first drive to bring the workpiece to a stop, so that after the braking time of the first drive, the cutting out of the workpiece section is only still executed by the second drive continuing to drive the laser cutting head and the workpiece comes to a stop at latest at the cutting-out end position (F).