Abstract: In a method for severing a solid body, a defined contour is stored in a control unit configured to detect contour breaches and to avoid contour breaches. A high-energy beam is moved along a contour on a surface of the solid body, with the surface of the solid body facing the high-energy beam, to produce with the high-energy beam a cutting gap. The contour on the surface is compared with the defined contour stored in the control unit, and avoidance of the contour breach is automatically deactivated when the contour on the surface of the solid body matches the defined contour and a contour breach is detected. Otherwise, the contour is omitted. Advantageously, the high-energy beam travels along the contour with an averaged line movement.

Abstract: In a method for laser fusion cutting in particular a plate-shaped workpiece, preferably with a thickness D of at least 1 mm, a laser beam and a cutting gas, in particular nitrogen, at a cutting gas pressure are directed at the workpiece surface by a convergent cutting nozzle. The laser power is at least 6 kW and the cutting nozzle has a nozzle end face on the workpiece side. A distance A between the nozzle end face and the workpiece surface during the cutting operation is 2 to 8 mm. The cutting nozzle has a nozzle channel with a diameter dD at the nozzle end face on the workpiece side of 1.5 to 4 mm. The cutting gas pressure before emergence from the cutting nozzle is 15 to 30 bar. This makes it possible to achieve high productivity along with a reduced risk of collision, i.e. higher process reliability.

Abstract: A method for cutting a workpiece includes cutting the workpiece along a predefined cutting contour to separate a workpiece part from a scrap part, and checking whether the workpiece part has been fully separated from the scrap part during the cutting. The workpiece is re-cut along an additional cutting contour laterally offset from the predefined cutting contour if it is found during the checking that the workpiece part has not been fully separated from the scrap part. The disclosure also relates to an associated machine for cutting a workpiece.

Abstract: A method for cutting a workpiece includes cutting the workpiece along a predefined cutting contour to separate a workpiece part from a scrap part, and checking whether the workpiece part has been fully separated from the scrap part during the cutting. The workpiece is re-cut along an additional cutting contour laterally offset from the predefined cutting contour if it is found during the checking that the workpiece part has not been fully separated from the scrap part. The disclosure also relates to an associated machine for cutting a workpiece.

Abstract: A method for cutting a workpiece includes cutting the workpiece along a predefined cutting contour to separate a workpiece part from a scrap part, and checking whether the workpiece part has been fully separated from the scrap part during the cutting. The workpiece is re-cut along an additional cutting contour laterally offset from the predefined cutting contour if it is found during the checking that the workpiece part has not been fully separated from the scrap part. The disclosure also relates to an associated machine for cutting a workpiece.

Abstract: A method for cutting a workpiece includes cutting the workpiece along a predefined cutting contour to separate a workpiece part from a scrap part, and checking whether the workpiece part has been fully separated from the scrap part during the cutting. The workpiece is re-cut along an additional cutting contour laterally offset from the predefined cutting contour if it is found during the checking that the workpiece part has not been fully separated from the scrap part. The disclosure also relates to an associated machine for cutting a workpiece.

Abstract: Method for cutting a planar and/or metal workpiece along a predefined cutting contour using a laser beam and a cutting gas emitted from a nozzle, wherein the laser beam makes a recess in the workpiece so as to form a recess hole (on the cutting contour or at least partly close to the cutting contour. At least two machining parameters are continuously modified during formation of the recess hole, and/or at least one machining parameter is continuously modified on a switch path between the recess hole and an endpoint lying on the cutting contour.

Abstract: The invention relates to methods and machine tools for processing workpieces, in which a workpiece and one or more processing tools are moved relative to each other with a positioning movement, an outward-stroke movement, and a return-stroke movement. In the positioning movement, the workpiece and the processing tool are positioned relative to each other in a positioning direction, in a return-stroke movement the workpiece and the processing tool are moved relative to each other and away from each other in a return-stroke direction transverse to the positioning direction, and in the outward-stroke movement the workpiece and the processing tool are moved relative to each other and towards each other in an outward-stroke direction transverse to the positioning direction. The return-stroke movement and the outward-stroke movement are executed during the positioning movement.

Abstract: The invention relates to methods and machine tools for processing workpieces, in which a workpiece and one or more processing tools are moved relative to each other with a positioning movement, an outward-stroke movement, and a return-stroke movement. In the positioning movement, the workpiece and the processing tool are positioned relative to each other in a positioning direction, in a return-stroke movement the workpiece and the processing tool are moved relative to each other and away from each other in a return-stroke direction transverse to the positioning direction, and in the outward-stroke movement the workpiece and the processing tool are moved relative to each other and towards each other in an outward-stroke direction transverse to the positioning direction. The return-stroke movement and the outward-stroke movement are executed during the positioning movement.