Control device for use on a numerically controlled machine tool, comprising: - a machine control device for controlling actuators of the machine tool for a machining process of workpiece machining on the machine tool based on control data in the form of an NC program; and - a monitoring device comprising a computer-implemented neural network for process monitoring on the machine tool; wherein the monitoring device is configured to read input data from the machine control device and to output output data indicating an operating state of the machine tool, and the neural network of the monitoring device is configured to evaluate output data indicating the operating state of the machine tool for process monitoring at the machine tool in order to detect errors in the machining process, characterized in that the neural network of the monitoring device is configured to read the input data from the machine control device during the ongoing machining process of workpiece machining and to output output data indicating a current operating state of the machine tool during workpiece machining; and the monitoring device is configured to adapt process parameters of the machining process at the machine control device, which relate to the workpiece machining carried out by means of a working spindle of the machine tool carrying a tool or a workpiece, on the basis of an evaluation of the output data indicating the current operating state of the machine tool by the neural network, during the machining process. - a machine control device for controlling actuators of the machine tool for a machining process of workpiece machining on the machine tool based on control data in the form of an NC program; and - a monitoring device comprising a computer-implemented neural network for process monitoring on the machine tool; wherein the monitoring device is configured to read input data from the machine control device and to output output data indicating an operating state of the machine tool, and the neural network of the monitoring device is configured to evaluate output data indicating the operating state of the machine tool for process monitoring at the machine tool in order to detect errors in the machining process, wherein the monitoring device is configured to read input data from the machine control device and to output output data indicating an operating state of the machine tool, and the neural network of the monitoring device is configured to evaluate output data indicating the operating state of the machine tool for process monitoring at the machine tool in order to detect errors in the machining process, the neural network of the monitoring device is configured to read the input data from the machine control device during the ongoing machining process of workpiece machining and to output output data indicating a current operating state of the machine tool during workpiece machining; and the monitoring device is configured to adapt process parameters of the machining process at the machine control device, which relate to the workpiece machining carried out by means of a working spindle of the machine tool carrying a tool or a workpiece, on the basis of an evaluation of the output data indicating the current operating state of the machine tool by the neural network, during the machining process.