A diagnostic device includes a reception unit and a determination unit. The reception unit is configured to receive context information and sensing information. The context information corresponds to a certain operation of a target item that constitutes a target device. The context information is a piece of a plurality of pieces of context information each describing an operation of the target item determined depending on a type of operation of the target device. The sensing information is on a physical quantity that varies in accordance with the operation of the target item. The determination unit is configured to determine a state of the target item based on the sensing information detected while the target item is performing the certain operation, and based on a model corresponding to the received context information. The model is a model of one or more models respectively defined for one or more pieces of the context information.

A control device for a machine tool includes a tool mounted on a main spindle relatively movable with respect to a workpiece and machines the workpiece using the tool. The control device includes: a parameter preparing unit, an evacuation unit, and an evacuation diagnosing unit. The parameter preparing unit preliminarily stores a predetermined parameter relating to a control. The evacuation unit causes the tool to perform an evacuation operation from the workpiece. The evacuation diagnosing unit diagnoses whether the evacuation operation is normal. When the evacuation diagnosing unit diagnoses that the evacuation operation is abnormal, the evacuation operation is cancelled.

A diagnostic device includes a reception unit and a determination unit. The reception unit is configured to receive context information and sensing information. The context information corresponds to a certain operation of a target item that constitutes a target device. The context information is a piece of a plurality of pieces of context information each describing an operation of the target item determined depending on a type of operation of the target device. The sensing information is on a physical quantity that varies in accordance with the operation of the target item. The determination unit is configured to determine a state of the target item based on the sensing information detected while the target item is performing the certain operation, and based on a model corresponding to the received context information. The model is a model of one or more models respectively defined for one or more pieces of the context information.

A system and computer-implemented method are provided for monitoring equipment. The method includes obtaining a trained model for an item, the item comprising equipment or a component of the equipment, the model having been trained using historical operational data of the type of equipment, and historical wear data acquired by inspecting the type of equipment and/or the type of component; using the trained model to generate an end-of-run prediction for the item using current or post service field inspection data for the item; analyzing the end-of-run prediction to determine a maintenance recommendation; and generating an output based on the prediction.

A machine tool includes a first motor that receives load fluctuation when the workpiece is processed and a second motor that operates to change the plural kinds of tools. An information processing device takes out the current of the first motor measured by the first current sensor for each signal that occurs at the changing operation of the plural kinds of tools and is measured by the second current sensor, and relatively compares a non-negative function value that has a current value at each taken-out segment as a parameter for each number of times of processing on the workpiece, thereby detecting a tool abnormality for each kind of the tool.

A method for automatic process monitoring during continuous generating grinding of pre-toothed workpieces, which permit early detection of grinding wheel breakouts. A generating grinding machine is used to machine multiple workpieces by clamping them onto at least one workpiece spindle and successively moving them into generating engagement with a grinding wheel. At least one measured variable is monitored during the machining to indicate if a grinding wheel breakout exists. If a grinding wheel breakout is indicated, the grinding wheel is examined automatically by moving a dressing tool over the tip region of the grinding wheel and generating a contact signal. A breakout is determined by analyzing the contact signal and, if present, the grinding wheel is dressed as often as necessary in order to eliminate the grinding wheel breakout. Alternatively, the checking of the grinding wheel is carried out directly at the first dressing stroke.

A machine tool capable of preventing production of a defective product. The processing unit determines whether the workpiece exists in the predetermined area. In the event that the workpiece exist in the area, the processing unit execute the top cut process. In the event that the workpiece does not exist in the area, the processing unit determines that the workpiece is in the abnormal position.

An information processing apparatus includes: a first acquisition unit configured to acquire detection information output from a detection unit; a second acquisition unit configured to acquire a signal indicating a section in which the target device operates; an extraction unit configured to extract characteristic information from the detection information; a data generation unit configured to calculate a processing section of each of the processing processes in the target device based on the signal, and classifies the detection information and the characteristic information; and an output control unit configured to output at least one of the signal of a section including the processing section, the detection information, and the characteristic information, and output at least one of the signal of sections including a plurality of processing sections of which cycles are different from each other, a plurality of the detection information, and a plurality of the characteristic information.

The present disclosure relates to an apparatus and a method for detecting an abnormality of a tool of a machine tool, and more particularly, to an apparatus and a method for correcting backlash of a machine tool, which are capable of repeatedly measuring a load of a workpiece transferring unit or a workpiece machining unit, and automatically detecting an abnormality of a tool based on a normal range of load data that are proportional to a standard deviation of the load data measured based on any one of a mode value, a mean value, or a median value of the repeatedly measured load data.

An operational control method is provided for a machine tool that includes a plurality of tool holders with a cutting-tool. The machine tool relatively moves the tool holders with respect to a workpiece to process the workpiece. The operational control method includes determining whether an abnormality has occurred in the cutting-tool during a processing or not, determining whether a simultaneous processing in which at least two or more of the tool holders perform the processings to an identical workpiece is being performed or not and whether the cutting-tool having the detected abnormality is the cutting-tool that is performing the simultaneous processing or not when the abnormality is detected, and causing the tool holder with the cutting-tool having the detected abnormality to take an abnormality avoidance operation and another of the tool holders to take a response operation based on a determination result at the determining of the simultaneous processing.