Method and device for the robot-controlled cutting of workpieces to be assembled by means of laser radiation

A device for robot-controlled cutting of workpieces to be joined by laser radiation, wherein a first workpiece is arranged in vicinity of a second workpiece in a first position;

• a laser is focused onto the first workpiece;
• a contour of the first workpiece is cut with the laser beam, which contour is to be assembled and joined with the second workpiece;
• during cutting, a first spacing of a focal point of the laser beam from the second workpiece is repeatedly determined in a distance direction that is identically oriented during cutting and is adjusted to a direction of assembling the first and second workpieces;
• and, during cutting, a second spacing of a processing point of the laser beam from the second workpiece is maintained at a constant value;
• the device comprising:
• a laser producing a laser beam for cutting a first workpiece;
• a control for controlling the laser beam, the laser beam having a focal point and a processing point on the first workpiece;
• a first sensor for measuring during cutting a first spacing of the focal point from a second workpiece in a distance direction;
• wherein the processing point of the laser beam formed on the first workpiece has a second spacing maintained constant relative to the second workpiece in the distance direction that is identically oriented during cutting and is adjusted to a direction of assembling the first and second workpieces.