Patents by Inventor Toshihiro Yonezu

Toshihiro Yonezu 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: 11662706
    Abstract: A life expectancy prediction system for a target tool includes a processing machine body, a detector to detect a state data, a learned model storage unit to store learned models generated by executing machine learning using training datasets, including an explanatory variable and an objective variable, the explanatory variable being the state data and the objective variable being a number of first remaining machining times, the learned model storage unit being to store the learned models, each for each of the tools and a remaining machining times prediction unit to select, based on the state data, one learned model and predict a number of second remaining machining times, using the one learned model and the state data.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: May 30, 2023
    Assignee: JTEKT CORPORATION
    Inventors: Natsuki Yabune, Toshihiro Yonezu, Koichi Kato, Yuki Ishigure
  • Patent number: 11400556
    Abstract: An abnormality detection apparatus for working tools configured to be used in a machining process performed by a machine tool, the abnormality detection apparatus includes a storage portion which previously stores correlations between features of a plurality of operating portions relation to the machining process performed by the machine tool, and a tool condition of each of a plurality of working tool types, and a tool condition determining portion which determines the tool condition of the working tools based on the correlations.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: August 2, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Shuntaro Takasu, Yuki Ishigure, Hisashi Otani, Toshihiro Yonezu
  • Publication number: 20210132578
    Abstract: A life expectancy prediction system for a target tool includes a processing machine body, a detector to detect a state data, a learned model storage unit to store learned models generated by executing machine learning using training datasets, including an explanatory variable and an objective variable, the explanatory variable being the state data and the objective variable being a number of first remaining machining times, the learned model storage unit being to store the learned models, each for each of the tools and a remaining machining times prediction unit to select, based on the state data, one learned model and predict a number of second remaining machining times, using the one learned model and the state data.
    Type: Application
    Filed: October 20, 2020
    Publication date: May 6, 2021
    Applicant: JTEKT CORPORATION
    Inventors: Natsuki YABUNE, Toshihiro YONEZU, Koichi KATO, Yuki ISHIGURE
  • Publication number: 20200398398
    Abstract: An abnormality detection apparatus for working tools configured to be used in a machining process performed by a machine tool, the abnormality detection apparatus includes a storage portion which previously stores correlations between features of a plurality of operating portions relation to the machining process performed by the machine tool, and a tool condition of each of a plurality of working tool types, and a tool condition determining portion which determines the tool condition of the working tools based on the correlations.
    Type: Application
    Filed: June 4, 2020
    Publication date: December 24, 2020
    Applicant: JTEKT CORPORATION
    Inventors: Shuntaro TAKASU, Yuki ISHIGURE, Hisashi OTANI, Toshihiro YONEZU
  • Patent number: 10133253
    Abstract: An operation limiting device applicable to a wide variety of machine tools and which improves the freedom of setting an operation limiting area. Two or three drive axes (Xa, Za) in different directions are designated from among a plurality of drive axes in the machine tool and the designated drive axes (Xa, Za) form the two or three dimensional coordinate system. An area (Ar) for limiting the operation of the mobile body is set in the two or three dimensional coordinate system. A drive axis (Xa) which is in operation is determined, and in the two or three coordinate system including the drive axis which is in operation the operation of the mobile body is limited when the mobile body enters into the limiting area (Ar).
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: November 20, 2018
    Assignee: JTEKT CORPORATION
    Inventors: Akihiro Shimizu, Hiroaki Sugiura, Toshihiro Yonezu
  • Publication number: 20150248124
    Abstract: An operation limiting device applicable to a wide variety of machine tools and which improves the freedom of setting an operation limiting area. Two or three drive axes (Xa, Za) in different directions are designated from among a plurality of drive axes in the machine tool and the designated drive axes (Xa, Za) form the two or three dimensional coordinate system. An area (Ar) for limiting the operation of the mobile body is set in the two or three dimensional coordinate system. A drive axis (Xa) which is in operation is determined, and in the two or three coordinate system including the drive axis which is in operation the operation of the mobile body is limited when the mobile body enters into the limiting area (Ar).
    Type: Application
    Filed: October 31, 2013
    Publication date: September 3, 2015
    Applicant: JTEKT CORPORATION
    Inventors: Akihiro Shimizu, Hiroaki Sugiura, Toshihiro Yonezu
  • Patent number: 8299743
    Abstract: A machine tool a tool includes a supporting member relatively movable to a workpiece along a predetermined axis, a servo motor configured to drive the tool supporting member to the workpiece along the predetermined axis, a sizing sensor configured to measure a profile of the workpiece and to output a size deviation of measured values from a target profile, and a position detector configured to detect at least one of a relative position of the tool supporting member to the workpiece and a rotational position angle of the servo motor. The a servo driver is configured to drive the servo motor, and has a first feedback control having an output based on the size deviation, and a second feedback control based on an output of the position detector. The servo drives the servo motor by combining the outputs of the first and second feedback controls.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: October 30, 2012
    Assignee: JTEKT Corporation
    Inventors: Satoshi Abeta, Toshihiro Yonezu
  • Patent number: 8287329
    Abstract: A grinding machine includes: a workhead (22) that rotatably supports a solid cylindrical or hollow cylindrical workpiece (W); a grinding wheel (43) that moves relative to the workhead (22) in a direction that intersects with a rotation axis of the workhead (22) to grind an outer peripheral surface of the workpiece (W); a measuring apparatus (50) that measures a position of an outer peripheral surface of the workpiece (W) corresponding to a rotation angle of the workhead (22); an outer peripheral surface shape calculation unit (64) that calculates an outer peripheral surface shape of the workpiece (W) on the basis of the position of the outer peripheral surface of the workpiece (W) measured by the measuring apparatus (50) during grinding; and a grinding condition determination unit (65) that determines a condition of grinding, which is performed after measurement by the measuring apparatus (50), on the basis of the calculated outer peripheral surface shape of the workpiece (W).
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: October 16, 2012
    Assignee: JTekt Corporation
    Inventors: Toshihiro Yonezu, Hiroaki Sugiura, Satoshi Ito, Yoshitaro Osaki
  • Patent number: 7985120
    Abstract: An apparatus and method for grinding a workpiece by rotating the workpiece about a rotational axis, rotating a cylindrical grinding wheel about a rotational axis being parallel to the rotational axis of the workpiece, moving the grinding wheel relative to the workpiece at least in one of a first direction being perpendicular to the rotational axis of the workpiece for grinding the workpiece at a cylindrical surface of the grinding wheel and a second direction being parallel to the rotational axis of the workpiece for grinding the workpiece at an end surface of the grinding wheel being perpendicular to the rotational axis of the grinding wheel, and by superimposing a vibration signal including a plurality of frequency components to a driving signal outputted to one of a workpiece rotating means for rotating the workpiece and a grinding wheel rotating means for rotating the grinding wheel.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: July 26, 2011
    Assignee: JTEKT Corporation
    Inventors: Yoshitaro Osaki, Toshihiro Yonezu, Makoto Nonoyama
  • Patent number: 7818080
    Abstract: It is one object of the present invention to provide a program writing method of numerical controller, a numerical controller and a cutting machine controlled thereby, achieving the writing of a plurality of programs relating to one axis to perform a high efficiency in a lot of productions. A next or later user-set-program controlling a duplicated axis controlled by plural user set programs identifies a virtual axis virtually controlled by one user set program. A program is written to replace the duplicated axis with the virtual axis. A control amount calculated by the user set program identifying the virtual axis is added to a control amount inputted to a correspondent axis driving program as a control amount of the duplicated axis before replacing the virtual axis.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: October 19, 2010
    Assignee: JTEKT Corporation
    Inventors: Toshihiro Yonezu, Hiroaki Sugiura, Satoshi Abeta
  • Patent number: 7809463
    Abstract: A machining apparatus, in which a plurality of user set programs in relation to one axis is written and the amount of the infeed motion of the grinding wheel is increased to restrain the change of the load of the grinding wheel, improves a machining accuracy and achieve a longer life of the grinding wheel.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: October 5, 2010
    Assignee: JTEKT Corporation
    Inventors: Toshihiro Yonezu, Hiroaki Sugiura, Yoshitaro Osaki
  • Publication number: 20100191365
    Abstract: It is an object of the present invention to provide a machine tool which can execute to machine the workpiece more precisely. A CNC 60, a servo driver 33 and a monitoring sensor 50 are connected to same simultaneous communication network 70. One of the CNC 60, the servo driver 33 and the monitoring sensor 50 functions as a master to output a periodical reference signal, and two remaining ones of the CNC 60, the servo driver 33 and the monitoring sensor 50 function as a slave to be input the reference signal from the simultaneous communication network 70 and to execute own processes on a basis of the reference signal.
    Type: Application
    Filed: January 12, 2010
    Publication date: July 29, 2010
    Applicant: JTEKT CORPORATION
    Inventors: Toshihiro Yonezu, Tatsuya Yogo, Satoshi Abeta
  • Publication number: 20100188035
    Abstract: It is an object of the present invention to provide a machine tool and a machining method thereof which can execute to machine the workpiece more precisely. The machine tool comprises a tool supporting member 21 relatively movable to a workpiece W along a predetermined axis and supporting a tool 40, a servo motor 32 driving the tool supporting member 21 to the workpiece W along the predetermined axis, a sizing sensor 50 measuring a profile of the workpiece W machined by the tool 40 and outputting a size deviation of measured values from a target profile, and a servo driver 33 driving the servo motor 32 in a feedback control based on the size deviation being output from the sizing sensor 50.
    Type: Application
    Filed: January 12, 2010
    Publication date: July 29, 2010
    Applicant: JTEKT CORPORATION
    Inventors: Satoshi ABETA, Toshihiro Yonezu
  • Publication number: 20100105289
    Abstract: A grinding machine includes: a workhead (22) that rotatably supports a solid cylindrical or hollow cylindrical workpiece (W); a grinding wheel (43) that moves relative to the workhead (22) in a direction that intersects with a rotation axis of the workhead (22) to grind an outer peripheral surface of the workpiece (W); a measuring apparatus (50) that measures a position of an outer peripheral surface of the workpiece (W) corresponding to a rotation angle of the workhead (22); an outer peripheral surface shape calculation unit (64) that calculates an outer peripheral surface shape of the workpiece (W) on the basis of the position of the outer peripheral surface of the workpiece (W) measured by the measuring apparatus (50) during grinding; and a grinding condition determination unit (65) that determines a condition of grinding, which is performed after measurement by the measuring apparatus (50), on the basis of the calculated outer peripheral surface shape of the workpiece (W).
    Type: Application
    Filed: October 14, 2009
    Publication date: April 29, 2010
    Applicant: JTEKT CORPORATION
    Inventors: Toshihiro YONEZU, Hiroaki SUGIURA, Satoshi ITO, Yoshitaro OSAKI
  • Publication number: 20090017734
    Abstract: An apparatus and method for grinding a workpiece by rotating the workpiece about a rotational axis, rotating a cylindrical grinding wheel about a rotational axis being parallel to the rotational axis of the workpiece, moving the grinding wheel relative to the workpiece at least in one of a first direction being perpendicular to the rotational axis of the workpiece for grinding the workpiece at a cylindrical surface of the grinding wheel and a second direction being parallel to the rotational axis of the workpiece for grinding the workpiece at an end surface of the grinding wheel being perpendicular to the rotational axis of the grinding wheel, and by superimposing a vibration signal including a plurality of frequency components to a driving signal outputted to one of a workpiece rotating means for rotating the workpiece and a grinding wheel rotating means for rotating the grinding wheel.
    Type: Application
    Filed: June 27, 2008
    Publication date: January 15, 2009
    Applicant: JTEKT Corporation
    Inventors: Yoshitaro Osaki, Toshihiro Yonezu, Makoto Nonoyama
  • Publication number: 20080177407
    Abstract: It is one object of the present invention to provide a program writing method of numerical controller, a numerical controller and a cutting machine controlled thereby achieving to write a plurality of programs relating to one axis to perform a high efficiency in the small lot of productions. A next or later user-set-program controlling a duplicated axis controlled by plural user set programs identifies a virtual axis virtually controlled by own user set program, a program is written to replace the duplicated axis to the virtual axis. A control amount calculated by the user set program identifying the virtual axis is added to a control amount input to a correspondent axis driving program as a control amount of duplicated axis before replacing to the virtual axis.
    Type: Application
    Filed: September 10, 2007
    Publication date: July 24, 2008
    Applicant: JTEKT Corporation
    Inventors: Toshihiro Yonezu, Hiroaki Sugiura, Satoshi Abeta
  • Publication number: 20080132146
    Abstract: A machining apparatus, in which a plurality of user set programs in relation to one axis is written and the amount of the infeed motion of the grinding wheel is increased to restrain the change of the load of the grinding wheel, improves a machining accuracy and achieve a longer life of the grinding wheel.
    Type: Application
    Filed: November 26, 2007
    Publication date: June 5, 2008
    Applicant: JTEKT Corporation
    Inventors: Toshihiro YONEZU, Hiroaki Sugiura, Yoshitaro Osaki
  • Patent number: 6721622
    Abstract: A profile data compensating method comprises a step of generating effective profile data by operating a machine tool under a non-load condition in accordance with theoretical profile data, a step of generating first error profile data representing error components of a control system, a step of generating first compensated profile data based upon the first error profile data, a step of generating measured profile data by measuring the shape of the workpiece machined in accordance with the first compensated profile data, a step of generating second error profile data representing error components of a mechanical system, and a step of generating second compensated profile data based upon the first and second error profile data.
    Type: Grant
    Filed: September 16, 2002
    Date of Patent: April 13, 2004
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Tatsuya Inagaki, Toshihiro Yonezu, Satoshi Abeta
  • Publication number: 20030114954
    Abstract: A profile data compensating method comprises a step of generating effective profile data by operating a machine tool under a non-load condition in accordance with theoretical profile data, a step of generating first error profile data representing error components of a control system, a step of generating first compensated profile data based upon the first error profile data, a step of generating measured profile data by measuring the shape of the workpiece machined in accordance with the first compensated profile data, a step of generating second error profile data representing error components of a mechanical system, and a step of generating second compensated profile data based upon the first and second error profile data.
    Type: Application
    Filed: September 16, 2002
    Publication date: June 19, 2003
    Applicant: TOYODA KOKI KABUSHIKI KAISHA
    Inventors: Tatsuya Inagaki, Toshihiro Yonezu, Satoshi Abeta
  • Patent number: 5846121
    Abstract: A machining apparatus for machining a workpiece by moving a tool in direction relative to the workpiece comprises, tool moving means for moving the tool in the direction relative to the workpiece, tool movable range setting means for setting a movable range for the tool to inhibit the workplace from exceeding a reference size by inputting the reference size, and halting means for halting a movement of the tool when a position of said tool exceeds the tool movable range set by said tool movable range setting means.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: December 8, 1998
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Yutaka Hayashi, Makoto Nonoyama, Tomonari Kato, Toshihiro Yonezu, Nobuo Ohkubo