Adaptive control for a machine tool, to reduce tool breakages, uses observation values for comparison with reference values based on a blunt tool to give the spindle torque for a new tool

摘要

While a workpiece is being machined by a machine tool, the working is adjusted by a control value. The value is determined by a comparison of a measured observation value related to a measured reference value with a required observation value in relation to the reference value. The required observation value is determined with a blunt tool. A characteristic curve (3) shows the spindle torque, and a characteristic curve (4) gives the measured torque for a new tool. The process is activated in windows (5,6) along the movement path.