Patents by Inventor Hidetoshi Uematsu

Hidetoshi Uematsu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11211738
    Abstract: The present invention provides a composite-cable relay device that connects individual wiring lines of a composite cable to two or more motor-side connectors included in a motor, the composite-cable relay device including: two or more relay-side connectors that are connected to the respective motor-side connectors; hollow housings that are secured to at least one of the relay-side connectors; a relay cable that possesses flexibility and that connects the hollow housings and the other relay-side connectors, wherein a connecting portion to which the composite cable is connected is provided in the hollow housings, and, in the interior of the hollow housing, wiring to be connected to the relay-side connector secured to the hollow housing and wiring to be connected to the relay cable branch off from each other.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: December 28, 2021
    Assignee: FANUC CORPORATION
    Inventors: Hidetoshi Uematsu, Leo Arai
  • Publication number: 20210066846
    Abstract: The present invention provides a composite-cable relay device that connects individual wiring lines of a composite cable to two or more motor-side connectors included in a motor, the composite-cable relay device including: two or more relay-side connectors that are connected to the respective motor-side connectors; hollow housings that are secured to at least one of the relay-side connectors; a relay cable that possesses flexibility and that connects the hollow housings and the other relay-side connectors, wherein a connecting portion to which the composite cable is connected is provided in the hollow housings, and, in the interior of the hollow housing, wiring to be connected to the relay-side connector secured to the hollow housing and wiring to be connected to the relay cable branch off from each other.
    Type: Application
    Filed: July 23, 2020
    Publication date: March 4, 2021
    Applicant: Fanuc Corporation
    Inventors: Hidetoshi UEMATSU, Leo ARAI
  • Publication number: 20210021214
    Abstract: A motor selection device is equipped with a speed calculation unit that calculates an average speed from a speed waveform of a motor that drives a predetermined driven object, the speed waveform being obtained when the driven object is made to perform a prescribed operation, a current calculation unit that calculates a root mean square current from a current waveform of the motor that drives the driven object, the current waveform being obtained when the driven object is made to perform the prescribed operation, a storage unit that stores a motor characteristic corresponding to a speed of a target motor serving as an object to be selected, and a determination unit that determines whether or not the prescribed operation by the target motor is possible, using the motor characteristic corresponding to the average speed, and the root mean square current.
    Type: Application
    Filed: July 13, 2020
    Publication date: January 21, 2021
    Inventors: Kodai Akashi, Hidetoshi Uematsu
  • Publication number: 20210018883
    Abstract: A motor selection device is equipped with a speed calculation unit that calculates a motor selection speed from a speed waveform of a motor that drives a predetermined driven object, in consideration of iron loss generated in a target motor serving as an object to be selected, the speed waveform being obtained when the driven object is made to perform a prescribed operation, a storage unit that stores a motor characteristic corresponding to a speed of the target motor serving as the object to be selected, and a determination unit that determines whether or not the prescribed operation by the target motor is possible, using the motor characteristic corresponding to the motor selection speed.
    Type: Application
    Filed: July 13, 2020
    Publication date: January 21, 2021
    Inventors: Kodai Akashi, Hidetoshi Uematsu
  • Patent number: 10859455
    Abstract: Provided is a brake inspection device including: load torque measurement units configured to respectively measure: load torques as a motor is normally rotated and reversely rotated in a released state where an operation of a brake for holding a rotor with respect to a stator of the motor is released; and a load torque as the motor is rotationally driven in either one of a normal direction or a reverse direction in a locked state where the brake is operated; and a determination unit configured to determine a state of the brake based on the load torques measured by the load torque measurement units.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: December 8, 2020
    Assignee: FANUC CORPORATION
    Inventors: Katsuya Ono, Hidetoshi Uematsu, Takeshi Tamaki
  • Publication number: 20200259402
    Abstract: Provided is a manufacturing device for a rotor core and a manufacturing method for a rotor core in which it is possible to suitably fit a columnar core rod into a center hole of a laminated iron core, when fitting and installing the laminated iron core into a fitting recess of a first mold.
    Type: Application
    Filed: February 10, 2020
    Publication date: August 13, 2020
    Applicant: FANUC CORPORATION
    Inventors: SeungJun LEE, Hidetoshi UEMATSU, Makoto FUNAKUBO
  • Publication number: 20200251943
    Abstract: Provided is a device for manufacturing a rotor core with less magnetic flux leakage, a method for manufacturing the rotor core, and a rotor structure. Included are a first mold including a fitting recess that fits and holds a laminated iron core in which a magnet is inserted into a magnet insertion hole; a second mold that clamps and seals the laminated iron core together with the first mold; a resin injection unit that is provided to the second mold and injects a resin material in the magnet insertion hole by using a molding machine; and a protrusion that is inserted into the magnet insertion hole by a predetermined insertion amount, and positions and holds the magnet by an end of the magnet being brought into contact with the protrusion, in a state of the first mold and the second mold being clamped.
    Type: Application
    Filed: February 3, 2020
    Publication date: August 6, 2020
    Applicant: FANUC CORPORATION
    Inventors: SeungJun LEE, Hidetoshi UEMATSU, Makoto FUNAKUBO
  • Publication number: 20200251969
    Abstract: Provided is a manufacturing device and a manufacturing method for a rotor core that can prevent damage from being caused to an end of a magnet due to movement of the magnet when injecting a resin material. Included are a first mold including a fitting recess that fits and holds a laminated iron core in which a magnet is inserted into a magnet insertion hole, a second mold that is engaged with the first mold and clamps and seals the laminated iron core together with the first mold, a resin injection unit that is provided to the second mold, and injects a resin material into the magnet insertion hole, and a magnet positioning and holding mechanism that positions and holds the magnet in a state of being fit into the fitting recess of the first mold.
    Type: Application
    Filed: February 3, 2020
    Publication date: August 6, 2020
    Applicant: FANUC CORPORATION
    Inventors: SeungJun LEE, Hidetoshi UEMATSU, Makoto FUNAKUBO
  • Patent number: 10574108
    Abstract: A winding arrangement method for a radial gap-type motor in which a three phase winding wound in a distributed winding form is inserted in slots of a stator includes: a coil forming step that, for each phase, forms a coil wound for each one pole pair; a coil group forming step that, for each phase, forms a first coil group by connecting odd-number-th coils along a direction of rotation via crossover wires, and forms a second coil group by connecting even-number-th coils along the direction of rotation via crossover wires; and a parallel-connecting step that, for each phase, connects the first coil group and the second coil group at one end, to form a current input side lead wire at the connection point, and connects the first coil group and the second coil group at the other end, to form a neutral point at the connection point.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: February 25, 2020
    Assignee: FANUC CORPORATION
    Inventors: Gang Ren, Hidetoshi Uematsu
  • Patent number: 10454401
    Abstract: Provided is a motor controller including: a rotation control unit configured to control a rotation of a motor; a brake control unit configured to control an operation of a brake for holding a rotor with respect to a stator of the motor; a rotation-state detection unit configured to detect a rotation state of the motor; a timer configured to measure, in a released state where an operation of the brake is released by the brake control unit, a time from an outputting of a command to change over a state of the brake to a locked state to a detection of a predetermined change in a rotation state of the motor by the rotation-state detection unit; and a determination unit configured to determine that a brake operation delay abnormality is present when the time, measured by the timer, is equal to or more than a predetermined threshold.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: October 22, 2019
    Assignee: Fanuc Corporation
    Inventors: Katsuya Ono, Takeshi Tamaki, Hidetoshi Uematsu
  • Patent number: 10417242
    Abstract: A motor selection method includes: referring to a database containing data pertaining to rated speeds, continuous rated torques, and upper limit values of load inertia moment of a plurality of motors; dividing the database, based on the upper limit values of load inertia moment; obtaining information pertaining to a required rotation speed, continuous rated torque, and load inertia moment; selecting one group from a plurality of groups; and selecting a motor meeting the following conditions. rotation speed required of motor?rated speed continuous torque required of motor?continuous rated torque load inertia moment required of motor?upper limit value of load inertia moment.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: September 17, 2019
    Assignee: FANUC CORPORATION
    Inventor: Hidetoshi Uematsu
  • Patent number: 10404127
    Abstract: Provided are a motor and method for producing the motor that automatically insert interphase insulation paper. Interphase insulation paper (7) has a parting strip (8) that partitions the boundary between windings (5) that are adjacent in the circumferential direction when inserted into coil ends (6). The parting strip (8) is sandwiched between the adjacent windings (5, 5).
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: September 3, 2019
    Assignee: FANUC CORPORATION
    Inventors: Gang Ren, Hidetoshi Uematsu
  • Patent number: 10361610
    Abstract: An encoder which detects information on the position or the speed of a motor includes memory which stores motor-specific information on the motor to be mounted on the encoder, a mount determination unit which determines whether the encoder has been removed from the motor, and a memory information erasure unit which erases the motor-specific information stored in the memory when the mount determination unit determines that the encoder has been removed from the motor.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: July 23, 2019
    Assignee: FANUC CORPORATION
    Inventor: Hidetoshi Uematsu
  • Patent number: 10355565
    Abstract: In a method for manufacturing a stator of the present invention, positions of stamping out the first stator core and the second stator core are respectively set so that an angular difference between respective rolling directions thereof becomes 360 degrees÷(4×motor pole pair number), when laminating the first stator core which is not circular stamped out from a first electromagnetic steel sheet, and the second stator core which is not circular stamped out from a second electromagnetic steel sheet. For the second stator core, orientation of a shortest segment among virtual segments linking opposite sides or diagonals which pass through a center thereof is not orthogonal to the rolling direction, and at least two are stamped out alongside in a width direction.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: July 16, 2019
    Assignee: FANUC CORPORATION
    Inventors: Hidetoshi Uematsu, Akihiro Hosoda
  • Patent number: 10305413
    Abstract: A machine learning device which learns a current command for a motor, the machine learning device including a state observation unit which observes a state variable including a motor rotation speed or a motor torque command of the motor and at least one of a motor torque, a motor current, and a motor voltage of the motor; and a learning unit which learns the current command for the motor based on the state variable.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: May 28, 2019
    Assignee: FANUC CORPORATION
    Inventors: Koudai Akashi, Hidetoshi Uematsu
  • Patent number: 10256706
    Abstract: A motor which reduces the manufacturing cost while able to reduce the cogging torque. The stator core is provided with a first core sheet and a second core sheet which is stacked with the first core sheet so that its rolling direction becomes a direction rotated from the rolling direction of the first core sheet by exactly an angle of an odd multiple of 360°/(number of poles of motor×2). The outside edge of the first core sheet has a first side and a second side at two sides in a direction perpendicular to the rolling direction. The outside edge of the second core sheet has a third side and a fourth side in a direction perpendicular to the rolling direction. The dimension between the first side and the second side and the dimension between the third side and the fourth side are the same.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: April 9, 2019
    Assignee: FANUC CORPORATION
    Inventors: Hidetoshi Uematsu, Yasuo Kawai
  • Patent number: 10247549
    Abstract: A shaft accuracy measuring device includes: a measurement unit including a light projecting unit that projects a measuring light and a light receiving unit that receives the measurement light projected by the light projecting unit; a motor installation unit that installs the motor such that the output shaft of the motor is disposed between the light projecting unit and the light receiving unit; and a calculation unit that calculates at least one of axial run-out, center run-out, and face run-out of the motor based on a measurement result of the measurement unit.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: April 2, 2019
    Assignee: FANUC CORPORATION
    Inventors: SeungJun Lee, Hidetoshi Uematsu, Tomohiro Seki
  • Publication number: 20190020293
    Abstract: Provided is a motor controller including: a rotation control unit configured to control a rotation of a motor; a brake control unit configured to control an operation of a brake for holding a rotor with respect to a stator of the motor; a rotation-state detection unit configured to detect a rotation state of the motor; a timer configured to measure, in a released state where an operation of the brake is released by the brake control unit, a time from an outputting of a command to change over a state of the brake to a locked state to a detection of a predetermined change in a rotation state of the motor by the rotation-state detection unit; and a determination unit configured to determine that a brake operation delay abnormality is present when the time, measured by the timer, is equal to or more than a predetermined threshold.
    Type: Application
    Filed: June 15, 2018
    Publication date: January 17, 2019
    Applicant: Fanuc Corporation
    Inventors: Katsuya Ono, Takeshi Tamaki, Hidetoshi Uematsu
  • Publication number: 20190017890
    Abstract: Provided is a brake inspection device including: load torque measurement units configured to respectively measure: load torques as a motor is normally rotated and reversely rotated in a released state where an operation of a brake for holding a rotor with respect to a stator of the motor is released; and a load torque as the motor is rotationally driven in either one of a normal direction or a reverse direction in a locked state where the brake is operated; and a determination unit configured to determine a state of the brake based on the load torques measured by the load torque measurement units.
    Type: Application
    Filed: June 15, 2018
    Publication date: January 17, 2019
    Applicant: Fanuc Corporation
    Inventors: Katsuya ONO, Hidetoshi UEMATSU, Takeshi TAMAKI
  • Publication number: 20180267972
    Abstract: A motor selection method includes: referring to a database containing data pertaining to rated speeds, continuous rated torques, and upper limit values of load inertia moment of a plurality of motors; dividing the database, based on the upper limit values of load inertia moment; obtaining information pertaining to a required rotation speed, continuous rated torque, and load inertia moment; selecting one group from a plurality of groups; and selecting a motor meeting the following conditions.
    Type: Application
    Filed: March 8, 2018
    Publication date: September 20, 2018
    Applicant: FANUC CORPORATION
    Inventor: Hidetoshi Uematsu