Patents by Inventor Daigo Watanabe

Daigo Watanabe 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: 12722294
    Abstract: A device includes an input reception unit that receives input of a parameter of a weaving signal, a signal generation unit that generates a weaving signal having the received parameter, a parameter acquisition unit that acquires, as a filtered parameter, the parameter of the weaving signal in a case where the weaving signal is subjected to filtering processing, a condition determination unit that determines whether or not the filtered parameter satisfies a predetermined condition, and a parameter adjustment unit that adjusts the received parameter if the filtered parameter is determined not to satisfy the predetermined condition. The signal generation unit generates a weaving signal having the parameter adjusted by the parameter adjustment unit.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: September 1, 2026
    Assignee: FANUC CORPORATION
    Inventor: Daigo Watanabe
  • Patent number: 12678951
    Abstract: A device includes an input reception unit that receives input of a parameter of a weaving signal, a signal generation unit that generates a weaving signal having the received parameter, a parameter acquisition unit that acquires, as a filtered parameter, the parameter of the weaving signal in a case where the weaving signal is subjected to filtering processing, a condition determination unit that determines whether or not the filtered parameter satisfies a predetermined condition, and a parameter adjustment unit that adjusts the received parameter if the filtered parameter is determined not to satisfy the predetermined condition. The signal generation unit generates a weaving signal having the parameter adjusted by the parameter adjustment unit.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: July 14, 2026
    Assignee: FANUC CORPORATION
    Inventor: Daigo Watanabe
  • Patent number: 12454056
    Abstract: A device includes: a weaving signal generation unit that generates a weaving signal for causing a robot to swing a tool; a chronological data acquisition unit for acquiring chronological data of the amplitude value of the tool when the robot is caused to execute a weaving motion according to the weaving signal; a frequency characteristic acquisition unit for acquiring a first frequency characteristic of chronological data; a resonance determination unit for determining, on the basis of the first frequency characteristic, whether or not the robot is resonating at the frequency of the weaving signal generated by the weaving signal generation unit; and a correction unit for correcting the weaving signal so as to change frequencies if the robot is determined to be resonating.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: October 28, 2025
    Assignee: Fanuc Corporation
    Inventors: Daigo Watanabe, Tomonori Matsushima
  • Patent number: 12134195
    Abstract: A control device for moving a robot and causing the robot to perform a work onto a work target portion includes a reference position acquisition section that acquires a position of the work target portion as a reference position, based on detection data of a sensor that detects the work target portion, a movement direction acquisition section that acquires a movement direction of the robot, a direction determination section that determines a shift direction in which a working position of the robot onto the work target portion is to be shifted from the reference position, based on the movement direction acquired by the movement direction acquisition section, and a robot control section that positions the robot at a target position shifted from the reference position toward the shift direction by a predetermined shift amount, when carrying out the work onto the work target portion.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: November 5, 2024
    Assignee: FANUC CORPORATION
    Inventors: Daigo Watanabe, Tomonori Matsushima
  • Publication number: 20240351206
    Abstract: A device includes: a weaving signal generation unit that generates a weaving signal for causing a robot to swing a tool; a chronological data acquisition unit for acquiring chronological data of the amplitude value of the tool when the robot is caused to execute a weaving motion according to the weaving signal; a frequency characteristic acquisition unit for acquiring a first frequency characteristic of chronological data; a resonance determination unit for determining, on the basis of the first frequency characteristic, whether or not the robot is resonating at the frequency of the weaving signal generated by the weaving signal generation unit; and a correction unit for correcting the weaving signal so as to change frequencies if the robot is determined to be resonating.
    Type: Application
    Filed: August 3, 2021
    Publication date: October 24, 2024
    Applicant: Fanuc Corporation
    Inventors: Daigo Watanabe, Tomonori Matsushima
  • Publication number: 20240227185
    Abstract: A device includes an input reception unit that receives input of a parameter of a weaving signal, a signal generation unit that generates a weaving signal having the received parameter, a parameter acquisition unit that acquires, as a filtered parameter, the parameter of the weaving signal in a case where the weaving signal is subjected to filtering processing, a condition determination unit that determines whether or not the filtered parameter satisfies a predetermined condition, and a parameter adjustment unit that adjusts the received parameter if the filtered parameter is determined not to satisfy the predetermined condition. The signal generation unit generates a weaving signal having the parameter adjusted by the parameter adjustment unit.
    Type: Application
    Filed: March 23, 2022
    Publication date: July 11, 2024
    Applicant: Fanuc Corporation
    Inventor: Daigo Watanabe
  • Publication number: 20240131707
    Abstract: A device includes an input reception unit that receives input of a parameter of a weaving signal, a signal generation unit that generates a weaving signal having the received parameter, a parameter acquisition unit that acquires, as a filtered parameter, the parameter of the weaving signal in a case where the weaving signal is subjected to filtering processing, a condition determination unit that determines whether or not the filtered parameter satisfies a predetermined condition, and a parameter adjustment unit that adjusts the received parameter if the filtered parameter is determined not to satisfy the predetermined condition. The signal generation unit generates a weaving signal having the parameter adjusted by the parameter adjustment unit.
    Type: Application
    Filed: March 22, 2022
    Publication date: April 25, 2024
    Applicant: Fanuc Corporation
    Inventor: Daigo Watanabe
  • Publication number: 20230053168
    Abstract: A control device for moving a robot and causing the robot to perform a work onto a work target portion includes a reference position acquisition section that acquires a position of the work target portion as a reference position, based on detection data of a sensor that detects the work target portion, a movement direction acquisition section that acquires a movement direction of the robot, a direction determination section that determines a shift direction in which a working position of the robot onto the work target portion is to be shifted from the reference position, based on the movement direction acquired by the movement direction acquisition section, and a robot control section that positions the robot at a target position shifted from the reference position toward the shift direction by a predetermined shift amount, when carrying out the work onto the work target portion.
    Type: Application
    Filed: January 12, 2021
    Publication date: February 16, 2023
    Inventors: Daigo WATANABE, Tomonori MATSUSHIMA
  • Patent number: 11300039
    Abstract: A precombustion chamber gas engine includes a main-chamber forming portion forming a main combustion chamber, and a precombustion-chamber forming portion forming a precombustion chamber communicating with the main combustion chamber via a plurality of nozzle holes. The precombustion-chamber forming portion includes a cylindrical portion extending along an extension direction of a precombustion chamber central axis of the precombustion-chamber forming portion, and a tip portion closing a main-combustion-chamber-side end of the cylindrical portion and having the nozzle holes. The tip portion includes a thin region having a thickness T satisfying T<L where L is a length of each nozzle hole.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: April 12, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Masahiro Kashiwagi, Daigo Watanabe, Yuta Furukawa
  • Patent number: 11221022
    Abstract: A turbine housing includes an outer housing portion which includes an inner wall internally forming a spiral space, a first heat shield core which separates the spiral space into a scroll flow passage where an exhaust gas flows and a heat shield space positioned on a side of the inner wall, the first heat shield core being disposed so as to face the inner wall in the spiral space, a variable nozzle unit for adjusting a flow of the exhaust gas from the scroll flow passage toward an impeller, the variable nozzle unit being disposed on a side opposite to the outer housing portion across the first heat shield core in an axial direction, and at least one annular seal portion disposed between the first heat shield core and the outer housing portion in the axial direction.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: January 11, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Shigeyoshi Sakuma, Eigo Katou, Keigo Sakamoto, Daigo Watanabe, Takashi Arai, Yuta Ishii
  • Publication number: 20210363914
    Abstract: A precombustion chamber gas engine includes a main-chamber forming portion forming a main combustion chamber, and a precombustion-chamber forming portion forming a precombustion chamber communicating with the main combustion chamber via a plurality of nozzle holes. The precombustion-chamber forming portion includes a cylindrical portion extending along an extension direction of a precombustion chamber central axis of the precombustion-chamber forming portion, and a tip portion closing a main-combustion-chamber-side end of the cylindrical portion and having the nozzle holes. The tip portion includes a thin region having a thickness T satisfying T<L where L is a length of each nozzle hole.
    Type: Application
    Filed: August 28, 2018
    Publication date: November 25, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Masahiro KASHIWAGI, Daigo WATANABE, Yuta FURUKAWA
  • Patent number: 11015250
    Abstract: An impeller for a rotary machine includes a base material of the impeller made of Al or an Al alloy. A surface layer for the impeller is formed by an electroless plating layer with a Ni—P based alloy and an under layer disposed between the base material and the surface layer, the under layer having a smaller Vickers hardness than the surface layer.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: May 25, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Daigo Watanabe, Takashi Arai, Hideki Yamaguchi, Wataru Murono, Taiji Torigoe, Masahiro Yamada
  • Patent number: 10895226
    Abstract: A turbocharger includes a gripping unit gripping a turbine-housing side flange portion and a bearing-housing side flange portion to couple a turbine housing and a bearing housing. In a state where the turbine housing and the bearing housing are coupled by the gripping unit, an elastic force in a direction to separate the turbine-housing side flange portion and the bearing-housing side flange portion from each other is applied to each of the turbine housing and the bearing housing.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: January 19, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Daigo Watanabe, Takao Yokoyama, Takashi Yoshimoto, Chikako Kato, Keigo Sakamoto, Yosuke Dammoto
  • Patent number: 10801368
    Abstract: A turbocharger includes: a turbine wheel; a turbine housing; a bearing housing; a shroud having a facing surface which faces a tip of a blade of the turbine wheel and being configured to surround the turbine wheel, the shroud comprising a separate member from the turbine housing and being disposed inside the turbine housing via a gap with respect to the turbine housing; a mount supported to at least one of the turbine housing or the bearing housing, at a position closer to the bearing housing than a scroll flow path in an axial direction of the turbine wheel; and at least one connection part connecting the mount and the shroud.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: October 13, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Keigo Sakamoto, Eigo Katou, Youji Akiyama, Makoto Ozaki, Daigo Watanabe
  • Patent number: 10731491
    Abstract: Bolt holes 16 are formed in a joint part 14 of a turbine housing 12, with flanged bolts 40 screwed in the bolt holes 16. A flange part 32 of a bearing housing 30 is sandwiched between bearing surfaces 44a of the flanged bolts 40 and an inner end face 14b of the joint part 14. A sealing ring 48 is interposed in an annular space s. Before the flanged bolts 40 are fastened, there is formed a height difference G equivalent to a compression allowance h for the sealing ring 48, between an outer end face 60a of the joint part 14 and a bolt receiving surface 32a of the flange part 32. The flanged bolts 40 are screwed into the bolt holes 16 until the bearing surfaces 44a make tight contact with the outer end face 60a so as to resiliently deform the sealing ring 48.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: August 4, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Shingo Shudo, Daigo Watanabe, Takumi Tokiyoshi, Motoki Ebisu
  • Publication number: 20200056628
    Abstract: A turbine housing includes an outer housing portion which includes an inner wall internally forming a spiral space, a first heat shield core which separates the spiral space into a scroll flow passage where an exhaust gas flows and a heat shield space positioned on a side of the inner wall, the first heat shield core being disposed so as to face the inner wall in the spiral space, a variable nozzle unit for adjusting a flow of the exhaust gas from the scroll flow passage toward an impeller, the variable nozzle unit being disposed on a side opposite to the outer housing portion across the first heat shield core in an axial direction, and at least one annular seal portion disposed between the first heat shield core and the outer housing portion in the axial direction.
    Type: Application
    Filed: September 27, 2017
    Publication date: February 20, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Shigeyoshi SAKUMA, Eigo KATOU, Keigo SAKAMOTO, Daigo WATANABE, Takashi ARAI, Yuta ISHII
  • Publication number: 20190136804
    Abstract: A turbocharger includes a gripping unit gripping a turbine-housing side flange portion and a bearing-housing side flange portion to couple a turbine housing and a bearing housing. In a state where the turbine housing and the bearing housing are coupled by the gripping unit, an elastic force in a direction to separate the turbine-housing side flange portion and the bearing-housing side flange portion from each other is applied to each of the turbine housing and the bearing housing.
    Type: Application
    Filed: May 18, 2016
    Publication date: May 9, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Daigo WATANABE, Takao YOKOYAMA, Takashi YOSHIMOTO, Chikako KATO, Keigo SAKAMOTO, Yosuke DAMMOTO
  • Patent number: 10267332
    Abstract: A compressor includes: an impeller including a hub and a plurality of blades disposed on an outer surface of the hub; and a housing which houses the impeller. The housing includes: a shroud section facing the outer surface of the hub to form a fluid flow path between the shroud section and the outer surface, and surrounding the impeller; and a casing section formed integrally with the shroud section and supporting the shroud section. The shroud section includes a first resin-based material having a static tensile strength of at least 65 MPa and no more than 200 MPa and a breaking strain of no more than 0.3 mm/mm at a temperature of 100° C. The casing section includes a second resin-based material having a static tensile strength of at least 40 MPa and a breaking strain of at least 0.1 mm/mm at a temperature of 100° C.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: April 23, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Daigo Watanabe, Isao Tomita, Ryoji Okabe, Hiroshi Suzuki
  • Publication number: 20190056052
    Abstract: In a cooling device for a high temperature pipe, a high temperature pipe is efficiently cooled, and cooling performance is improved. A cooling device (10) for a high temperature pipe that cools a surface to be cooled (104) of a pipe (100) as a high temperature pipe includes: a cooling medium supply header (11) that is disposed so as not to shield heat dissipation by radiation from the surface to be cooled (104) to the periphery, and allows a cooling medium to flow out toward the surface to be cooled (104); and a cooling medium supply device (12) that supplies the cooling medium to the cooling medium supply header (11).
    Type: Application
    Filed: February 23, 2017
    Publication date: February 21, 2019
    Applicant: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Takeshi MATSUO, Fumitoshi SAKATA, Yuichi KANEMAKI, Haruki MUKUMOTO, Daigo WATANABE, Chikako KATO, Junichi OZAWA, Junki JOYAMA, Masahiro KUROSE, Takahiro FUJIMORI, Hiroyuki OHYAMA
  • Patent number: 10077679
    Abstract: Provided is a turbine housing that comprises: a scroll unit; a flat annular cover (6) that is disposed in a state where one end face abuts a flanged portion (20a) of the scroll unit and that is welded to the flanged portion (20a); an annular seal portion (4) that extends from a basal end (4a) welded to the inner circumferential side of the other end face of the annular cover (6) to the distal end (4b) disposed further to the exterior than the basal end (4a) in the radial direction and that comprises a member that can be elastically deformed; and a plurality of threaded bushings (16) that are each welded in a plurality of locations on the outer circumferential side of the other end face of the annular cover (6) and that have fastening holes (16a) for fastening bolts (40) inserted along the direction of the axis of rotation.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: September 18, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Daigo Watanabe, Nariaki Seike