Online multi-force-adaption during machining

A method for operating a numerical controlled machine comprising:

• receiving a sequence of control commands which, when executed by a numerical controlled machine, cause a tool operated by the numerical controlled machine to move along a sequence of support points that define a discretised tool path to machine a workpiece to obtain a predetermined workpiece geometry, wherein the workpiece geometry is determined by the sequence of control points, and wherein the sequence of control commands comprises:
• information on a simulated value of a first interaction parameter describing an interaction of the tool with the workpiece for each support point, and
• information on a simulated value of at least a second interaction parameter describing an interaction of the tool with the workpiece for each support point,
• while machining the workpiece based on the received sequence of control commands:
• measuring a value of the first interaction parameter for a first position of the tool;
• comparing the measured value of the first interaction parameter for the first position of the tool with the simulated value of the first interaction parameter for the first position of the tool;
• determining an adapted value of the second interaction parameter for a following position of the tool based on a result of the comparison;
• controlling the numerically controlled machine by a controller;
• quantifying a difference between the measured value of the first interaction parameter for the first position of the tool and the simulated value of the first interaction parameter for the first position of the tool;
• feeding back the measured value of the first interaction parameter to the controller, thus establishing a closed control loop with the measured value of the first interaction parameter as process variable, the simulated value of the first interaction parameter as reference variable, and the difference as control error.