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: The disclosure relates to methods and systems for piercing, drilling, or cutting metal workpieces in a laser processing operation. The methods include focusing a pulsed laser beam onto a processing location on a workpiece; detecting process radiation emitted from the processing location; determining an intensity of the process radiation at a plurality of temporally sequential times during pulse pauses; determining an intensity gradient of the process radiation; comparing the intensity gradient with a gradient threshold value; and detecting a spontaneous material removal on the workpiece when the number of times the gradient threshold value has been exceeded is above a predetermined limit value. When a spontaneous material removal is detected, the system changes one or both of a laser parameter and a processing parameter of the laser processing operation. The disclosure also relates to processing machines for carrying out the methods.

Abstract: This disclosure relates to methods and apparatuses for piercing workpieces at a piercing point using a laser beam, which exits from a laser processing nozzle with a process gas, whereby a bulge is formed on the workpiece surface around the piercing point during the piercing. A distance between the laser processing nozzle and the bulge is determined during the piercing and at least one piercing parameter is changed in dependence on the distance determined.

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: The disclosure relates to methods and systems for piercing, drilling, or cutting metal workpieces in a laser processing operation. The methods include focusing a pulsed laser beam onto a processing location on a workpiece; detecting process radiation emitted from the processing location; determining an intensity of the process radiation at a plurality of temporally sequential times during pulse pauses; determining an intensity gradient of the process radiation; comparing the intensity gradient with a gradient threshold value; and detecting a spontaneous material removal on the workpiece when the number of times the gradient threshold value has been exceeded is above a predetermined limit value. When a spontaneous material removal is detected, the system changes one or both of a laser parameter and a processing parameter of the laser processing operation. The disclosure also relates to processing machines for carrying out the methods.

Abstract: Methods and systems are implemented for forming a through hole in a workpiece using a laser beam and a process gas, such as oxygen or nitrogen, coming from a gas nozzle. A hole is formed in the workpiece using the laser beam and a process gas emerging from a gas nozzle, such that the formed hole extends only partially through the workpiece. A bulge deposited while forming the hole partially through the workpiece is removed from the workpiece surface by directing a flow of gas through the nozzle toward the workpiece surface as the nozzle is moved with the laser beam switched off, the flow of gas being delivered to the nozzle at a higher pressure than the process gas is delivered to the nozzle during forming the hole partially through the workpiece. Then, the hole is fully pierced through the workpiece by the laser beam using the process gas.

Abstract: The disclosure relates to methods and systems for piercing, drilling, or cutting metal workpieces in a laser processing operation. The methods include focusing a pulsed laser beam onto a processing location on a workpiece; detecting process radiation emitted from the processing location; determining an intensity of the process radiation at a plurality of temporally sequential times during pulse pauses; determining an intensity gradient of the process radiation; comparing the intensity gradient with a gradient threshold value; and detecting a spontaneous material removal on the workpiece when the number of times the gradient threshold value has been exceeded is above a predetermined limit value. When a spontaneous material removal is detected, the system changes one or both of a laser parameter and a processing parameter of the laser processing operation. The disclosure also relates to processing machines for carrying out the methods.

Abstract: This disclosure relates to methods and apparatuses for piercing workpieces at a piercing point using a laser beam, which exits from a laser processing nozzle with a process gas, whereby a bulge is formed on the workpiece surface around the piercing point during the piercing. A distance between the laser processing nozzle and the bulge is determined during the piercing and at least one piercing parameter is changed in dependence on the distance determined.

Abstract: Methods and systems are implemented for forming a through hole in a workpiece using a laser beam and a process gas, such as oxygen or nitrogen, coming from a gas nozzle. A hole is formed in the workpiece using the laser beam and a process gas emerging from a gas nozzle, such that the formed hole extends only partially through the workpiece. A bulge deposited while forming the hole partially through the workpiece is removed from the workpiece surface by directing a flow of gas through the nozzle toward the workpiece surface as the nozzle is moved with the laser beam switched off, the flow of gas being delivered to the nozzle at a higher pressure than the process gas is delivered to the nozzle during forming the hole partially through the workpiece. Then, the hole is fully pierced through the workpiece by the laser beam using the process gas.

Abstract: The disclosure relates to methods and systems for piercing, drilling, or cutting metal workpieces in a laser processing operation. The methods include focusing a pulsed laser beam onto a processing location on a workpiece; detecting process radiation emitted from the processing location; determining an intensity of the process radiation at a plurality of temporally sequential times during pulse pauses; determining an intensity gradient of the process radiation; comparing the intensity gradient with a gradient threshold value; and detecting a spontaneous material removal on the workpiece when the number of times the gradient threshold value has been exceeded is above a predetermined limit value. When a spontaneous material removal is detected, the system changes one or both of a laser parameter and a processing parameter of the laser processing operation. The disclosure also relates to processing machines for carrying out the methods.

Abstract: A method for interlinking regulation and/or control functions for a motor vehicle, the communication structure of the control or regulation functions is defined by way of graphs containing nodes and directed gridlines, the nodes of the graph representing control or regulation functions and its directed gridlines representing defined communication paths of the control or regulation functions.

Abstract: A method and a device for actuating a motor vehicle clutch device (4). A control device (12) automatically influence the frictional power of the clutch device (4) in accordance with predetermined criteria (19) by varying the continuously variable ratio of a vehicle transmission (2).

Abstract: Method and device for controlling a motor vehicle drive train. To reverse the travel direction, the input torque is transmitted with pressure modulation from one clutch (Kv) of one travel direction to one clutch (Kr) of the opposite travel direction. If at the time that a reverse travel direction is selected and the speed of travel exceeds a set maximum value (VR,max), the speed of travel is automatically reduced to the maximum value first by continuous change of the ratio of the transmission (2) of the drive train.