Patents by Inventor Tetsuro Izumi

Tetsuro Izumi 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: 11745340
    Abstract: A robot system includes: a first robot; a second robot; and circuitry configured to: control the first and second robots to execute a collaborative operation on a work piece; and control, in response to a detection of an irregular state of the first robot during the collaborative operation, the first and second robots to execute a collaborative counteractive operation to eliminate the irregular state.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: September 5, 2023
    Inventors: Takashi Nishimura, Issei Aoyama, Tetsuro Izumi, Shangning Li, Akihiro Yamamoto
  • Patent number: 11433531
    Abstract: A robot system includes a robot including leading end, base, and multi-articular arm, and circuitry that controls the atm to move the end based on motion control program specifying transition over time of target position and posture of the end, the transition including correction target portion starting and ending in the transition; controls the arm to move the end in response to guided manipulation applying external force to the robot while the circuitry controls the arm; obtains relative command information based on the target position and posture at start of the correction portion and specifying the target position and posture at points in the correction portion including start and end in the correction portion; and controls the arm to move the end from the position and posture based on the information, beginning at time when movement of the arm controlled by the circuitry in response to the manipulation has ended.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: September 6, 2022
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Tetsuro Izumi, Shohei Ohno, Takashi Nishimura, Tamio Nakamura
  • Patent number: 11241796
    Abstract: A robot system includes a robot, a first movable object on which the robot is mounted and which is configured to move with the robot, a camera mounted on the first movable object to take, while the first movable object is moving, a plurality of images of a reference object that relates to a position of a workpiece, and circuitry configured to control the robot to operate on the workpiece based on the plurality of images while the first movable object is moving.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: February 8, 2022
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Yuichi Sato, Tomoyuki Horiuchi, Dai Kono, Tetsuro Izumi
  • Patent number: 11192244
    Abstract: A robot system includes a robot, a sensor, and a processor. The sensor is configured to detect an external force acting on the robot. The processor is configured to move the robot in a forward direction such that a representative point of the robot moves along a motion track in the forward direction; move the robot in a reverse direction such that the representative point moves along the motion track in the reverse direction opposite to the forward direction when the external force satisfies a first condition which includes a condition that the external force is larger than a first threshold force; and move the robot to reduce the external force when the external force satisfies a second condition which includes a condition that the external force is larger than a second threshold force even after the robot has been moved in the reverse direction.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: December 7, 2021
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Tamio Nakamura, Tetsuro Izumi, Takashi Nishimura, Shohei Ohno
  • Publication number: 20210221009
    Abstract: A manipulation unit includes a body, a tool holder, and a plurality of manipulated switches. The body has a first end, a second end opposite to the first end, and a cylindrical circumferential outer surface that extends from the first end to the second end and which is configured to be held to perform direct teaching to a robot. The first end is attachable to a leading end of a robot arm of the robot. The tool holder is connected to the second end and configured to hold a tool. The plurality of manipulated switches are configured to send signal to a robot controller to perform the direct teaching. The plurality of manipulated switches are provided on the body to be aligned along a circumferential direction of the cylindrical circumferential outer surface so that the direct teaching is performed with a hand which holds the cylindrical circumferential outer surface.
    Type: Application
    Filed: April 8, 2021
    Publication date: July 22, 2021
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Yuichi SATO, Tamio NAKAMURA, Tetsuro IZUMI, Takashi NISHIMURA, Shohei OHNO
  • Patent number: 11007655
    Abstract: A manipulation unit includes a body, a tool holder, and a manipulated portion. The body has a first end, a second end opposite to the first end, and a peripheral surface connecting the first end and the second end. The first end is attachable to a robot arm. The tool holder is connected to the second end and configured to hold a tool. The manipulated portion is provided on the peripheral surface. The manipulated portion includes a manipulation surface and a surrounding portion. The robot arm is to be operated via the manipulation surface. The surrounding portion surrounds the manipulation surface such that the manipulation surface is recessed from the surrounding portion.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: May 18, 2021
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Yuichi Sato, Tamio Nakamura, Tetsuro Izumi, Takashi Nishimura, Shohei Ohno
  • Publication number: 20210053219
    Abstract: A robot system includes: a first robot; a second robot; and circuitry configured to: control the first and second robots to execute a collaborative operation on a work piece; and control, in response to a detection of an irregular state of the first robot during the collaborative operation, the first and second robots to execute a collaborative counteractive operation to eliminate the irregular state.
    Type: Application
    Filed: August 20, 2020
    Publication date: February 25, 2021
    Inventors: Takashi NISHIMURA, Issei AOYAMA, Tetsuro IZUMI, Shangning LI, Akihiro YAMAMOTO
  • Publication number: 20190299399
    Abstract: A robot system includes a robot including leading end, base, and multi-articular arm, and circuitry that controls the atm to move the end based on motion control program specifying transition over time of target position and posture of the end, the transition including correction target portion starting and ending in the transition; controls the arm to move the end in response to guided manipulation applying external force to the robot while the circuitry controls the arm; obtains relative command information based on the target position and posture at start of the correction portion and specifying the target position and posture at points in the correction portion including start and end in the correction portion; and controls the arm to move the end from the position and posture based on the information, beginning at time when movement of the arm controlled by the circuitry in response to the manipulation has ended.
    Type: Application
    Filed: March 28, 2019
    Publication date: October 3, 2019
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Tetsuro Izumi, Shohei Ohno, Takashi Nishimura, Tamio Nakamura
  • Patent number: 10409269
    Abstract: Provided is an operation command generation device, which is configured to generate an operation command, which is a collection of jobs to be performed by a process system of at least a robot, based on a protocol chart of at least a plurality of process symbols, the operation command generation device circuitry includes: a job generation unit configured to generate, based on the protocol chart, a job; a priority instruction unit configured to instruct a priority condition for determining a job execution order; and an execution order determination unit configured to determine an execution order of the jobs based on the priority instructed by the priority instruction unit by using a first condition about repeatedly execution of the jobs according to the number of the containers and a second condition about execution order of the jobs according to the arrangement of the process symbols in the protocol chart.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: September 10, 2019
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Tetsuro Izumi, Hirokazu Kariyazaki, Makoto Umeno, Tatsuro Ipposhi
  • Publication number: 20190160682
    Abstract: A robot system includes a robot, a first movable object on which the robot is mounted and which is configured to move with the robot, a camera mounted on the first movable object to take, while the first movable object is moving, a plurality of images of a reference object that relates to a position of a workpiece, and circuitry configured to control the robot to operate on the workpiece based on the plurality of images while the first movable object is moving.
    Type: Application
    Filed: November 21, 2018
    Publication date: May 30, 2019
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Yuichi SATO, Tomoyuki HORIUCHI, Dai KONO, Tetsuro IZUMI
  • Publication number: 20190126476
    Abstract: A robot system includes a robot, a sensor, and a processor. The sensor is configured to detect an external force acting on the robot. The processor is configured to move the robot in a forward direction such that a representative point of the robot moves along a motion track in the forward direction; move the robot in a reverse direction such that the representative point moves along the motion track in the reverse direction opposite to the forward direction when the external force satisfies a first condition which includes a condition that the external force is larger than a first threshold force; and move the robot to reduce the external force when the external force satisfies a second condition which includes a condition that the external force is larger than a second threshold force even after the robot has been moved in the reverse direction.
    Type: Application
    Filed: October 15, 2018
    Publication date: May 2, 2019
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Tamio NAKAMURA, Tetsuro IZUMI, Takashi NISHIMURA, Shohei OHNO
  • Publication number: 20190099898
    Abstract: A manipulation unit includes a body, a tool holder, and a manipulated portion. The body has a first end, a second end opposite to the first end, and a peripheral surface connecting the first end and the second end. The first end is attachable to a robot arm. The tool holder is connected to the second end and configured to hold a tool. The manipulated portion is provided on the peripheral surface. The manipulated portion includes a manipulation surface and a surrounding portion. The robot arm is to be operated via the manipulation surface. The surrounding portion surrounds the manipulation surface such that the manipulation surface is recessed from the surrounding portion.
    Type: Application
    Filed: September 7, 2018
    Publication date: April 4, 2019
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Yuichi SATO, Tamio NAKAMURA, Tetsuro IZUMI, Takashi NISHIMURA, Shohei OHNO
  • Patent number: 9833905
    Abstract: After a forward end of a workpiece is inserted into a through-hole and fitting is started, a follow operation of moving the workpiece to follow the shape of the through-hole is performed during the movement of the workpiece in a fitting direction. At this time, the workpiece is fitted into the through-hole while a control point of a robot is changed in a direction opposite to the fitting direction according to the amount of movement of the workpiece in the fitting direction.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: December 5, 2017
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Tetsuro Izumi, Yukio Hashiguchi, Takuya Fukuda, Ryoichi Nagai
  • Publication number: 20170329313
    Abstract: Provided is an operation command generation device, which is configured to generate an operation command, which is a collection of jobs to fee performed by a process system of at least a robot, based on a protocol chart of at least a plurality of process symbols, the operation command generation device circuitry includes: a job generation unit configured to generate, based on the protocol chart, a job; apriority instruction unit configured to instruct a priority condition for determining a job execution order; and an execution order determination unit configured to determine an execution order of the jobs based on the priority instructed by the priority instruction unit by using a first condition about repeatedly execution of the jobs according to the number of the containers and a second condition about execution order of the jobs according to the arrangement of the process symbols in the protocol chart.
    Type: Application
    Filed: August 3, 2017
    Publication date: November 16, 2017
    Inventors: Tetsuro IZUMI, Hirokazu KARIYAZAKI, Makoto UMENO, Tatsuro IPPOSHI
  • Patent number: 9329593
    Abstract: A robot system includes a plurality of robots, a plurality of cells, a detection device, and a changer device. Each of the plurality of robots is configured to operate based on an operation command. The plurality of cells respectively accommodate the plurality of robots and are connectable to each other. The detection device is configured to detect that the plurality of cells are connected to each other. When the detection device detects that the plurality of cells are connected to each other, the changer device is configured to change at least one operation command among operation commands for the plurality of robots respectively accommodated in the connected cells.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: May 3, 2016
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Tetsuro Izumi, Tamio Nakamura, Dai Kouno, Ryoichi Nagai
  • Patent number: 9186791
    Abstract: A mobile robot includes a truck capable of traveling by servo control, a robot arm mounted on the truck, and a control portion servo-controlling the traveling of the truck. The control portion is configured to set a servo gain of the servo control for the truck to a robot arm operation gain during the operation of the robot arm.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: November 17, 2015
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Dai Kouno, Tetsuro Izumi, Tamio Nakamura, Takashi Nishimura
  • Patent number: 9156160
    Abstract: A robot system includes a plurality of robots, a control device, a common work table, and a calibration device. The control device is configured to control the plurality of robots. On the common work table, the plurality of robots are configured to work. Based on a position of a first robot having a calibrated coordinate relative to a position of a second robot among the plurality of robots, the calibration device is configured to calibrate a coordinate of the second robot.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: October 13, 2015
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Ryoichi Nagai, Tamio Nakamura, Dai Kouno, Tetsuro Izumi
  • Patent number: 9158299
    Abstract: A robot system includes a first cell and a second cell. The first cell includes a first robot, a first controller, and a first casing. The first robot performs work on a to-be-worked material. The first controller controls the first robot. The first casing accommodates the first robot and the first controller. The second cell includes a second robot, a second controller, and a second casing. The second robot performs work on a to-be-worked material. The second controller controls the second robot. The second casing accommodates the second robot and the second controller. When the first casing and the second casing are connected to each other, the first controller and the second controller respectively control the first robot and the second robot to work in a common operation area, where a first movable area and a second movable area overlap.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: October 13, 2015
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Dai Kouno, Tamio Nakamura, Tetsuro Izumi, Ryoichi Nagai
  • Patent number: 9138893
    Abstract: A robot teaching system according to an embodiment includes a robot, a sensor, a screen generator, an adjuster, and a job generator. The sensor measures measured values relating to operations of the robot. The screen generator generates a teaching operation screen that includes guidance information intended for the teacher. The adjuster adjusts parameters for generating a job based on specified values relating to the operations of the robot and input in the teaching operation screen, and the measured values of the sensor associated with the specified values, the parameters defining an operation command including corrections of the operations of the robot. The job generator generates the job in which the parameters adjusted by the adjuster are incorporated.
    Type: Grant
    Filed: December 25, 2013
    Date of Patent: September 22, 2015
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Ryoichi Nagai, Yukio Hashiguchi, Tetsuro Izumi
  • Patent number: 9132554
    Abstract: A robot system includes robot, an image capture device, a plurality of illumination devices, and a control device. The robot is configured to perform a predetermined work on a to-be-processed material. The image capture device is configured to capture an image of the to-be-processed material and has a dynamic range. The plurality of illumination devices are configured to illuminate the to-be-processed material. The control device is configured to control at least one illumination device among the plurality of illumination devices to keep an amount of light received by the image capture device within the dynamic range of the image capture device.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: September 15, 2015
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Dai Kouno, Tamio Nakamura, Tetsuro Izumi, Ryoichi Nagai