Fanuc Corporation

Lion Chemical Co., Ltd.

Masanobu Takemoto

Kaoru Hiraga

Masao Kamiguchi

Keita Hada

Susumu Ito

Tatsuhiro Uchiyama

Noriaki Neko

Susumu Maekawa

Osamu Saito

Toshiyuki Ogata

Kunio Kojima

Kazuo Kubota

Hisao Ishii

Tomonori Kobayashi

Motonori Tanaka

A thermal displacement compensator measures a temperature of an environment in which a machine is installed and a temperature of each part of the machine, and calculates a temperature difference between at least two temperatures among measured temperatures. Furthermore, the thermal displacement amount of the machine is acquired. Then, based on teacher data using the measured temperatures and the calculated temperature difference as input data and using the acquired thermal displacement amount as output data, a thermal displacement compensation model that estimates the output data from the input data is created by machine learning.

Thermal displacement compensator

A wire disconnection prediction device includes: a data acquisition part configured to acquire data relating to machining of a workpiece in a state where a wire is not disconnected during machining of the workpiece by a wire electric discharge machine; a preprocessing part configured to create, machining condition data of a condition relating to a machining condition commanded in machining of the workpiece, machining member data relating to a member used in the machining, and machining state data during machining of the workpiece, as state data indicating a state of the machining; and a learning part configured to generate, based on the state data created by the preprocessing part, a learning model indicating correlation between the state data and the state where the wire of the wire electric discharge machine is not disconnected.

Wire disconnection prediction device

A wire disconnection prediction device includes: a data acquisition part configured to acquire data relating to machining of a workpiece during machining of the workpiece by a wire electric discharge machine; a preprocessing part configured to create, based on the data acquired by the data acquisition part, machining condition data, machining member data and machining state data, as state data indicating a state of the machining; and a machine learning device configured to execute, based on the state data created by the preprocessing part, processing relating to machine learning using a learning model indicating correlation between a machining state in the wire electric discharge machine and presence/absence of a possibility of disconnection occurrence of a wire electrode in the wire electric discharge machine and a disconnection cause by a plurality of class sets.

A monitoring device for monitoring an operation condition of a machine tool includes: an information acquiring section that acquires event information generated by operation of the machine tool and state information of the machine tool; a judging section that when, after generation of the event information, there has occurred a predetermined change of state of the machine tool corresponding to content indicated by the event information, judges whether or not the content indicated by the event information has been resolved, based on the event information and the state information; and a notifying section that, in the case where when there has occurred the predetermined change of state of the machine tool corresponding to the content indicated by the event information, it has been judged that the content indicated by the event information has not been resolved, re-notifies of the generated event information.

Monitoring device and method of monitoring

A machining path creating device for wire electric discharge machines creates a machining path for machining a keyway in a side surface of a round hole. The machining path creating unit compares a 'keyway depth' and a diameter of the round hole input by an operator. The machining path creating device determines that the input 'keyway depth' is a cut depth when the input &#x201c;keyway depth&#x201d; is smaller than the diameter of the round hole and that a value obtained by subtracting the diameter of the round hole from the input &#x201c;keyway depth&#x201d; is the cut depth when the input &#x201c;keyway depth&#x201d; is larger than the diameter of the round hole.

Keyway machining path creating device for wire electric discharge machine

A machining program creation apparatus for a wire electrical discharge machine for creating a machining program for cutting a predetermined machining shape in an object to be machined includes a first unit defining the machining shape; a second unit defining a shape of the object to be machined; a third unit designating a reference position to be used when the machining shape is machined; a fourth unit for generating a first machining path for cutting the machining shape based on the machining shape, the shape of the object to be machined, and the machining reference position; a fifth unit for generating the shape of the object to be machined as a second machining path based on the shape of the object to be machined and the machining reference position; and a sixth unit for drawing the first and the second machining paths on the same screen.

Machining program creation apparatus for wire electrical discharge machine

A machining program creating device for a wire electric discharge machine creates a machining program for machining a keyway on the side surface of a round hole in a workpiece, based on a previously specified diameter of the round hole, a center position of the round hole measured by bringing a wire electrode into contact with the workpiece, and a previously defined shape of the keyway.

Machining program creating device for keyway milling for wire electric discharge machine

In a data collection system for electric discharge machines, multiple electric discharge machines are connected with a computer over a data transmission path. Information on machining conditions of an electric discharge machine is stored in a storage unit of the electric discharge machine, and information sent from the electric discharge machine after completion of machining is collected by the computer. By minimizing monitoring information that is temporarily stored in the storage unit, various kinds of monitoring information can be stored without being affected by a network environment.

Data collection system for electric discharge machines

A machining pass generating apparatus for a wire electric discharge machine, which is configured to generate a machining pass for machining a key groove on a side surface of a round hole, includes a processor. The processor is configured to define a shape of the key groove to be machined, designate a diameter of the round hole, designate a position of the round hole, and generate a machining pass, the pass suppresses an opening of the key groove from being narrowed.

Wire electric discharge machine and machining pass generating apparatus for wire electric discharge machine

The position of a feed shaft is monitored, the mean moving speed and moving frequency of the feed shaft are measured with every unit time for position correction, and a correction amount &dgr;n is determined from the speed and frequency according to an approximation formula and updated (c and c ). A position correction amount for a commanded position is determined from this correction amount, and the commanded position is corrected by the position correction amount (c to c ). The position correction amount for the commanded position is determined from this correction amount, and the commanded position is corrected by this position correction amount. Since the correction amount is determined according to the approximation formula, thermal displacement correction can be effected at all times without requiring any sensor. When the correction amount changes substantially (c ), the thermal displacement is measured by means of a sensor and used as the correction amount (c and c ), whereby accuracy is improved. The frequency of measurement by means of sensors is reduced, so that the machining time can be reduced.

Apparatus and method for thermal displacement correction for a machine tool

A programmable logic controller capable of freely and sequentially controlling peripheral equipment without modifying a system program. Necessary data for sequence control of the peripheral equipment are selected from data defined in the system program. The memory addresses corresponding to the data are assigned to addresses to be used in a user program in an address storage unit. The controller executes the system program to sequentially control an industrial machine, and also executes the user program to control the peripheral equipment. The controller refers to the data being used in executing the system program, which are necessary for sequence control of the peripheral equipment, based on the designated relationship of the addresses stored in the address storage unit. Since necessary data for sequence control of the peripheral equipment can be obtained by combining the addresses arbitrarily by the user, it is not necessary to modify the system program in order to obtain the necessary data for sequence control of the peripheral equipment.

Programmable logic controller having program for designating addresses

A tool life management system for managing a tool life. The system includes a load torque measuring device for measuring an initial load torque of a spindle attached to a tool during an initial machining operation and for measuring an actual load torque of the spindle attached to the tool during a subsequent actual machining operation, a torque calculating device for calculating a tool wear detection torque based on a reference load torque, and for calculating a tool breakage detection torque based on a tool diameter, the reference load torque being the initial load torque of the spindle, a memory for storing the reference load torque, the tool wear detection torque and the tool breakage detection torque, a torque comparing device for comparing the actual load torque of the spindle with each of the tool wear detection torque and the tool breakage detection torque, and for outputting a result of the comparison, and a tool control device for controlling the tool in accordance with the result of the comparison.

Growing community of inventors

Yamanashi, Japan

Masanobu Takemoto