A method for a device to monitor performance of a manufacturing machine which is equipped with a fixture for holding a workpiece, the fixture having at least one fixing hole, includes obtaining actual coordinate values of the fixing hole in a plurality of machining processes and calculating a standard deviation of the coordinates in at least one axial direction according to the actual coordinate values and a preset standard coordinate value. A risk index in at least one axial direction is calculated according to the standard deviation and a preset tolerance and a determination made as to whether risk index exceeds a preset threshold. A warning is sent to the machine and supervising engineer if the risk exceeds the preset threshold. A machine monitoring device and a computer readable storage medium are also provided.

A cutting apparatus includes a container including a holder in which a workpiece having an adapter attached thereto is held, a reading target applied to the adapter, an optical sensor to optically read the reading target, a memory storing a position coordinate of the holder and a theoretical position coordinate of the reading target associated with the position coordinate of the holder, a reader to read the reading target using the optical sensor to acquire an image of the reading target, a calculator to determine, in accordance with the image acquired by the reader, an actual position coordinate of the reading target to calculate a correction value from a difference between the actual position coordinate and the theoretical position coordinate, and an updater to update, using the correction value calculated by the calculator, the position coordinate of the holder stored in the memory.

A machine learning device provided in a controller for controlling a wire electrical discharge machine uses state variables (including data relating to a correction amount, a machining path, machining conditions, and a machining environment) observed by a state observation unit and determination data acquired by a determination data acquisition unit to machine-learn a correction for a machining path. Using the learning result, the machining path can be corrected automatically and accurately on the basis of a partial machining path, the machining conditions and the machining environment of the machining performed by the wire electrical discharge machine.

A method for a device to monitor performance of a manufacturing machine which is equipped with a fixture for holding a workpiece, the fixture having at least one fixing hole, includes obtaining actual coordinate values of the fixing hole in a plurality of machining processes and calculating a standard deviation of the coordinates in at least one axial direction according to the actual coordinate values and a preset standard coordinate value. A risk index in at least one axial direction is calculated according to the standard deviation and a preset tolerance and a determination made as to whether risk index exceeds a preset threshold. A warning is sent to the machine and supervising engineer if the risk exceeds the preset threshold. A machine monitoring device and a computer readable storage medium are also provided.

A method of correcting a track of a cutting edge is provided. With movement of the cutting edge, a point on the cutting edge in contact with the rotation symmetry plane is moved along the cutting edge from a first end portion of the cutting edge to a second end portion of the cutting edge opposite to the first end portion. The correction method includes measuring, by a measurement unit, a shape of the cut and machined rotation symmetry plane, calculating, by an operation unit, an error of the measured shape of the rotation symmetry plane from a target shape of the rotation symmetry plane in a direction of the axial line of rotation, and correcting, by the operation unit, a component in the direction of the axial line of rotation of a track of a point of cutting based on the error.

A numerical controller for controlling a machine tool having a parallel link mechanism specifies a commanded position and a commanded posture of a tool by analyzing a program command, corrects the commanded posture while maintaining the commanded position when a combination of the specified commanded position and commanded posture is not feasible, and outputs the commanded position and the corrected posture which has been corrected to the machine tool. In this way, machining in the unrealizable region is realised by the machine tool having the parallel link mechanism.

A machining apparatus error correction method is implemented in a machining apparatus error correction system. The method includes setting initial operating parameters according to a predetermined machining program, obtaining dimensional detection data during machining of a product, calculating a dimensional correction parameter according to the detection data and a dimensional inspection standard according to a predetermined correction model and generating a correction parameter file readable by the machining apparatus, and distributing the correction parameter file to the corresponding machining apparatus. The initial operating parameters include clamping parameters and dimensional inspection standards.

A machining apparatus error correction method is implemented in a machining apparatus error correction system. The method includes setting initial operating parameters according to a predetermined machining program, obtaining dimensional detection data during machining of a product, calculating a dimensional correction parameter according to the detection data and a dimensional inspection standard according to a predetermined correction model and generating a correction parameter file readable by the machining apparatus, and distributing the correction parameter file to the corresponding machining apparatus. The initial operating parameters include clamping parameters and dimensional inspection standards.

A control device, a control program and a control system are provided. The control device includes: a first identification device for giving a first command as a command value to a drive device and determining a torque required for the controlled object to execute the first command; a second identification device for giving a second command as the command value and a third command as a compensation command to the drive device and determining a preceding switching time based on a response from the controlled object; a command value updating device for sequentially updating the command value based on a predetermined target trajectory; and a compensation command updating device for sequentially updating the compensation command based on the command value. The compensation command updating device updates the compensation command according to a moving direction after a reversal of the moving direction of the controlled object in the target trajectory.

A tool-path correcting apparatus includes a cut-point calculating unit that calculates, on the basis of tool path data, tool data, and shape data, cut point information, which is information concerning cut points by a tool on a machining curved surface of a machining shape at the time when the tool is disposed at command points described in the tool path data, a correction-command-point extracting unit that extracts, on the basis of the tool path data and the cut point information, correction command points, which are command points that should be corrected, from command points described in the tool path data, a command-point-correcting-direction determining unit that determines, on the basis of the correction command points, command point correcting directions, which are directions in which the correction command points should be corrected, and a tool-path-data correcting unit that corrects the tool path data.