Patents Assigned to FANUC Corporation
  • Patent number: 11052503
    Abstract: A spindle device includes a spindle housing, a spindle shaft rotatably supported inside the spindle housing, a spindle mount having an insertion cavity into which the spindle housing is inserted along the axial direction of the spindle shaft, and a mount cover covering the spindle mount. A temperature regulator for adjusting the temperature inside the mount cover is provided inside the mount cover.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: July 6, 2021
    Assignee: FANUC CORPORATION
    Inventor: Masahiro Murota
  • Patent number: 11056992
    Abstract: A motor controller includes: a rotation speed estimating unit that estimates a rotation speed of a motor based on current information and primary frequency information of the motor; a proximity switch that outputs an ON signal when a portion of a rotating body of the motor is in proximity and that outputs an OFF signal when a portion of the rotating body of the motor is not in proximity; a rotation speed calculating unit that calculates a rotation speed of the motor based on the ON signal and the OFF signal output from the proximity switch; a speed command compensating unit that compensates a speed command value such that an error between the speed command value and a rotation speed calculation value becomes smaller; and a speed control system that perform the speed control on the motor based on the compensated speed command value and the rotation speed estimation value.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: July 6, 2021
    Assignee: FANUC CORPORATION
    Inventors: Shoutarou Hashimoto, Yuuki Morita
  • Patent number: 11053088
    Abstract: A hand includes a plurality of first gripping members which move relative to each other, a first drive unit configured to move the plurality of first gripping members in a first opening and closing direction to bring the plurality of first gripping members close to each other or separate them from each other, a plurality of second gripping members which move relative to each other independently from the plurality of first gripping members, a second drive unit configured to move the plurality of second gripping members in a second opening and closing direction to bring the plurality of second gripping members close to each other or separate them from each other, and a third drive unit configured to move the plurality of first gripping members relative to the plurality of second gripping members in a third direction intersecting the first and second opening and closing directions.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: July 6, 2021
    Assignee: Fanuc Corporation
    Inventors: Yoshinori Ochiishi, Kenshou Ishimoto
  • Patent number: 11055047
    Abstract: The waveform display device of the present invention is provided with a waveform pattern storage unit configured to store, in an associated manner, a control command and a waveform pattern of time-series data measured when the manufacturing machine is controlled by the control command, a waveform analysis unit configured to extract a characteristic waveform from the time-series data and identify the control command corresponding to the characteristic waveform with reference to the waveform pattern storage unit, a correspondence analysis unit configured to identify the correspondence between the characteristic waveform and a command included in the control program, based on the control program and the control command corresponding to the characteristic waveform, and a display unit configured to perform display such that the correspondence between the characteristic waveform and the command included in the control program is ascertainable.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: July 6, 2021
    Assignee: FANUC CORPORATION
    Inventor: Junichi Tezuka
  • Patent number: 11056260
    Abstract: A reactor includes a plurality of iron cores and a winding wound on any of the plurality of iron cores; a gap is formed between two iron cores facing against each other; a gap-facing surface of one iron core has an area larger than that of a gap-facing surface of the other iron core.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: July 6, 2021
    Assignee: Fanuc Corporation
    Inventor: Masatomo Shirouzu
  • Patent number: 11052491
    Abstract: A galvano scanner that irradiates an object with a laser beam to perform machining, the galvano scanner comprising: an emission unit that emits the laser beam; a protective glass that protects the emission unit from a scattered matter generated in machining; and a glass holding mechanism that holds the protective glass, the protective glass at least including a triple structure in a vertical direction, the glass holding mechanism holding the protective glass that is the lowermost layer in the protective glass having the triple structure so that the protective glass that is the lowermost layer can be fallen off downward.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: July 6, 2021
    Assignee: FANUC CORPORATION
    Inventors: Yoshinori Murakami, Satoru Kawai
  • Publication number: 20210197364
    Abstract: Provided is a support structure comprising a link member (a rod-like member), a clamp member disposed to surround the link member, and an elastic member disposed between the link member and the clamp member, the support structure supports the link member inside the clamp member via the elastic member, and the elastic member comprises a liquid impermeable material, and fills a space between the link member and the clamp member.
    Type: Application
    Filed: November 18, 2020
    Publication date: July 1, 2021
    Applicant: FANUC CORPORATION
    Inventor: Reishin OGAWA
  • Publication number: 20210200181
    Abstract: Components are assembled in an industrial machine together with a controller. The components each include a unique identification information memory portion and a component-side configuration history memory portion. The unique identification information memory portion stores, as unique identification information, identification information of the component itself, which is providable to the controller. The component-side configuration history memory portion stores configuration histories that each summarize, in terms of an acquisition timing from the controller, the unique identification information of the component itself, controller identification information of the controller that was used to configure the industrial machine together with the component itself, and unique identification information of other ones, than the controller, of the components, which were also used to configure the industrial machine together with the component itself.
    Type: Application
    Filed: December 17, 2020
    Publication date: July 1, 2021
    Applicant: FANUC CORPORATION
    Inventors: Kazuki IKEDA, Takahiro ICHIKAWA
  • Publication number: 20210197380
    Abstract: A balancer abnormality detection system includes: a robot; a motor configured to operate the robot; a balancer provided in the robot and configured to generate assist torque which assists power of the motor with force generated by elastic bodies; and a controller configured to detect abnormality of the balancer by measuring a current value of the motor operated to keep a posture of the robot during standby of the robot and comparing the current value with a current command value of the motor necessary for keeping the posture of the robot.
    Type: Application
    Filed: December 1, 2020
    Publication date: July 1, 2021
    Applicant: FANUC CORPORATION
    Inventor: Yuusei ONODERA
  • Publication number: 20210197334
    Abstract: A drive mechanism of a transfer tool configured to drive a swing axis and tilts the workpiece includes: a motor; a speed reducer including an output shaft arranged in parallel to the swing axis and configured to reduce speed of rotation of the motor; and a link mechanism configured to couple the swing axis with the output shaft, in which the link mechanism includes a first link portion fixed to the output shaft at a middle portion in a length direction thereof; a second link portion fixed to the swing axis at a middle portion in a length direction thereof; a third link portion that couples one end portions of the first link portion and the second link portion with each other in a rotatable manner; and a fourth link portion that couples other end portions of the first link portion and the second link portion with each other in a rotatable manner, in which the first link portion and the second link portion are arranged in parallel to each other, and in which the third link portion and the fourth link portion ar
    Type: Application
    Filed: December 1, 2020
    Publication date: July 1, 2021
    Applicant: FANUC CORPORATION
    Inventor: Shun SUYAMA
  • Publication number: 20210201033
    Abstract: To provide an I/O signal information system in which a monitoring target portion and I/O signal information are automatically associated with each other and displayed on a display screen when monitoring a facility including a robot. An object identification unit identifies an object based on a correlation between a change of an actual photographed image displayed on a display device by actual photographed data supplied from an imaging device and a change of I/O signal information, and a display control unit causes the display device to display an augmented reality image in a display form in which an image of the I/O signal information has a specific relationship with an image of the object identified.
    Type: Application
    Filed: December 1, 2020
    Publication date: July 1, 2021
    Applicant: FANUC CORPORATION
    Inventor: Keisuke NAGANO
  • Patent number: 11048236
    Abstract: The determination of a slip constant is simplified upon driving a motor for which the slip constant is unknown, based on variation of acceleration when accelerating an induction motor from start up to a predetermined speed. A parameter determination support device for motor driving includes: an automatic measurement part which automatically measures characteristic information including a speed during acceleration and acceleration upon driving an induction motor to accelerate from start up to a predetermined speed set in advance which is no more than a base speed of the induction motor, relative to each slip constant, based on a plurality of slip constants set in advance; and an estimation part which estimates, as a slip constant of the induction motor, a slip constant having the smallest variation in acceleration, among a plurality of slip constants, based on the characteristic information.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: June 29, 2021
    Assignee: FANUC CORPORATION
    Inventors: Kouki Oikawa, Yuuki Morita, Tadashi Okita
  • Patent number: 11048227
    Abstract: Provided is an abnormality detection device with which an abnormality of a machining state of a machine tool can be detected based on information on a section where machining is actually performed in machine tool-based machining. The abnormality detection device detects an abnormality of a machining state of a machine tool machining a workpiece with a tool. The machine tool includes a determination unit determining the machining state by using information related to an actual cutting section in the tool-based machining of the workpiece in the machine tool. The determination unit performs the machining state determination by using a deviation in position and length of a section recognized as the actual cutting section and a physical quantity in the actual cutting section acquired from the machine tool.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: June 29, 2021
    Assignees: FANUC CORPORATION, RICOH COMPANY, LTD.
    Inventors: Tetsushi Takahara, Yasuhiro Nakahama, Shinji Okuda, Junichi Takami
  • Patent number: 11045951
    Abstract: The control system includes: a driven body driven by a motor; a control apparatus configured to operate the body; and a sensor detecting a state quantity of the body, wherein the control apparatus includes: a storage storing a correction amount for correcting vibration occurring at the mounting position; a control unit configured to generate a command value for the motor in each control cycle based on an operation program, and perform operation control of the body based on the correction amount and the command value; a calculation unit configured to calculate the correction amount; an update unit configured to update the correction amount each time the operation control is performed; and a determination unit configured to determine validity of at least one of an internal parameter and the like of the sensor based on the command value and the state quantity each time the operation control is performed.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: June 29, 2021
    Assignee: FANUC CORPORATION
    Inventors: Nobuaki Yamaoka, Hajime Suzuki
  • Patent number: 11046530
    Abstract: An article transfer apparatus includes: a conveyor configured to transfer workpieces; a photographing unit that acquires a three-dimensional image by photographing the transferred workpieces; a workpiece distinguishing unit that detects three-dimensional shapes and postures of the workpieces on the basis of the three-dimensional image acquired by the photographing unit; a storage unit that stores therein three-dimensional shapes of reference workpieces and postures of the reference workpieces in a state in which the reference workpieces do not overlap with another workpiece; and an overlap judgement unit that judges whether there is an overlap between the workpieces on the basis of the three-dimensional shapes and the postures of the reference workpieces stored in the storage unit, and the three-dimensional shapes and the postures of the workpieces detected by the workpiece distinguishing unit.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: June 29, 2021
    Assignee: FANUC CORPORATION
    Inventor: Kentaro Koga
  • Patent number: 11045960
    Abstract: Provided is a life evaluating device that evaluates the life of a lubricant in a machine including a motor and a transmission mechanism that is lubricated by the lubricant and transmits power of the motor to a movable unit. The life evaluating device includes a motor-heat-value calculating unit that calculates a motor heat value on the basis of a current value of the motor, a frictional-heat-value calculating unit that calculates a frictional heat value in the transmission mechanism on the basis of rotating speed of the motor and a coefficient of friction of the transmission mechanism, a lubricant-temperature estimating unit that estimates temperature of the lubricant on the basis of the calculated frictional heat value and the calculated motor heat value, and a life estimating unit that estimates the life of the lubricant on the basis of the estimated temperature of the lubricant and information concerning impurities in the lubricant.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: June 29, 2021
    Assignee: FANUC CORPORATION
    Inventors: Wei Guo, Hiroshi Nakagawa
  • Patent number: 11048221
    Abstract: A numerical controller performs control to rotate a turret, which holds a plurality of tools on the outer peripheral portion thereof, thereby moving one (selected tool) of the tools selected by a command to a predetermined position (selected position). The numerical controller sets and holds a partial area of the outer peripheral portion of the turret as an area (passage-prohibited area) prohibited from passing through the selected position and determines whether or not the selected tool is present in the passage-prohibited area or whether or not the passage-prohibited area passes through the selected position as the selected tool is moved to the selected position.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: June 29, 2021
    Assignee: Fanuc Corporation
    Inventor: Yousuke Koyanaka
  • Patent number: 11048216
    Abstract: A control device which predicts the timing of disconnection of a power supply is provided with a machine learning device configured to learn the disconnection timing of the power supply. The machine learning device is provided with a state observation unit configured to observe an operation content for the control device for each user as one of state variables representative of a present state of an environment, a determination data acquisition unit configured to acquire determination data which indicates that power disconnection of the control device is commanded by the user, and a learning unit configured to learn the operation content for each user and a command for the power disconnection in association with each other by using the state variable and the determination data.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: June 29, 2021
    Assignee: Fanuc Corporation
    Inventor: Yuusuke Sugiyama
  • Patent number: 11048234
    Abstract: Provided is a numerical control system of a machine tool that can shorten a cycle time.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: June 29, 2021
    Assignee: FANUC CORPORATION
    Inventor: Yoshinori Saijo
  • Patent number: 11048215
    Abstract: A machine learning device included in a tool selecting apparatus includes a state observing unit that observes, as state variables indicative of a current environmental state, data related to machining condition, data related to cutting condition, data related to machining result, and data related to a tool, and a learning unit that, by using the state variables, learns distribution of the data related to the machining condition, the data related to the cutting condition, and the data related to the machining result, with respect to data related to the tool.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: June 29, 2021
    Assignee: FANUC CORPORATION
    Inventor: Takuya Saitou