This control system takes into account the thermomechanical aspects of materials to quickly and easily determine optimal cutting conditions and to automatically control machining to preserve the integrity of the workpiece. This system includes an acquisition module configured to acquire values of a set of input parameters relating to cutting conditions and material properties of the piece, and a microprocessor configured for determining at least one operating cutting parameter representative of a cutting signal from the machining apparatus using a set of output parameters of an integrity model previously constructed during a learning phase. The integrity model connects the set of input parameters to the set of output parameters comprising specific cutting coefficients representative of the material integrity of the piece, and establishes at least one fatigue threshold of the at least one cutting operating parameter. The fatigue threshold allows control of the progress of cutting operations.

A method for processing a workpiece with a tool is provided with holding the workpiece, holding the tool, and moving the held tool relative to the held workpiece in accordance with an NC program including an arithmetic expression to calculate a position of the held tool.

This control system takes into account the thermomechanical aspects of materials to quickly and easily determine optimal cutting conditions and to automatically control machining to preserve the integrity of the workpiece. This system includes an acquisition module configured to acquire values of a set of input parameters relating to cutting conditions and material properties of the piece, and a microprocessor configured for determining at least one operating cutting parameter representative of a cutting signal from the machining apparatus using a set of output parameters of an integrity model previously constructed during a learning phase. The integrity model connects the set of input parameters to the set of output parameters comprising specific cutting coefficients representative of the material integrity of the piece, and establishes at least one fatigue threshold of the at least one cutting operating parameter. The fatigue threshold allows control of the progress of cutting operations.

A numerical control system 1 is provided with N numerical control devices 5_1, . . . for controlling the operation of a machine tool on the basis of a numerical control program, and generating a robot command, and a robot control device 6 for controlling the operation of a robot 3 on the basis of a robot command. Each numerical control device is provided with a communication interface 56_1, . . . for transmitting to the robot control device 6 a request for connecting to the robot control device 6, and the robot control device 6 is provided with a robot connection reply unit 63 for generating a connection approval with respect to connection request after a connection request has been received by a communication interface 60, and a robot connection determination unit 64 for selecting one of the plurality of numerical control devices as a connection approval transmission destination. The communication interface 60 transmits the connection approval to the communication interface of the connection approval transmission destination, and the communication interface of each numerical control device begins transmitting a robot command to the communication interface 60 after receipt of the connection approval.