Patent ID: 7177720

Claim:
A method for operating a machine tool comprising a tool carrier moveable relative to a workpiece along first relative trajectories and comprising a first controller for controlling relative operational movements of the tool carrier, the method comprising the steps of: providing a first control program comprising a series of machining operations, with the series of machining operations defining the first relative trajectories, loading the first control program into the first controller, moving the tool carrier along the first relative trajectories in order to perform machining operations on the workpiece, said step of moving being controlled by the first controller, stopping the relative operational movements of the tool carrier at a stop location along the first relative trajectories if an unplanned event occurs, and restarting relative operational movements of the tool carrier along the first relative trajectories from a starting position, wherein the tool carrier is moved from the stop location into the starting position along second relative trajectories, wherein the second relative trajectories are automatically determined as a function of the machining operation in which the unplanned event occurred, and wherein the tool carrier is automatically moved into the starting position from the stop location when the restart begins.