This tactile sensor is used to determine the workpiece position or its components and individual parts by gauging the surface of the workpiece. In each case, the successional part of the program is shifted according to determined deviations.
Sensor shifting may be applied for correction of an arbitrary amount of individual points, entire sections of a welding program or entire programs. Combination with arc seam sensing is feasible. The control system supports shifting, rotating, and tilting of a program, depending on position change.
The gas nozzle itself is used as a sensor. This makes it possible - even on complicated workpieces and in confined spaces - to perform the required search steps on the reference surfaces of the workpiece, by which the position of the weld seams is determined. As soon as the gas nozzle gets into contact with the work piece, it is discharged and the robot stops immediately. This discharge is recorded on-line by the respective sensor board in the control cabinet and subsequently the robot moves to the next searching drive.