Abstract: A resistance measuring device is coupled with a controller for controlling the parameters of the cutting process. The device is connected between the laser cutting head of the machine of an electrically conducting part of the laser cutting head and workpiece, and the amount of the electrical resistance of the medium between the laser cutting head and the workpiece can be determined when cutting electrically conducting workpieces. In this method, the amount of the electrical resistance of the medium between the laser cutting head and the workpiece is determined, and the distance between the cutting head and workpiece is also determined. Depending on the detected values of the electrical resistance and distance, the parameters of the cutting process are controlled to obtain efficient cutting action.

Abstract: As part of a process for bending workpieces (14), when the workpiece (14) is released from the upper die (8) and/or the lower die (10), the actual size of the bending angle (.beta.) is continually determined; from the actual size of the bending angle (.beta.) found, the change in it is determined and, as soon as the change in the actual size of the bending angle (.beta.) assumes a predetermined value, the actual size of the then existing bending angle (.beta.) is compared with the desired size.On a tooling machine for carrying out the method described, there are scanning elements (17,18) and a device (24) for determining the actual size of the bending angle (.beta.) that are parts of a device (19) for determining the change in the actual size of the bending angle (.beta.). The device (24) for determining the actual size of the bending angle (.beta.) is connected to a comparison device (32) for comparing the actual size of the bending angle (.beta.) to the desired size.