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).
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Patent number: 11662706Abstract: 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: GrantFiled: October 20, 2020Date of Patent: May 30, 2023Assignee: JTEKT CORPORATIONInventors: Natsuki Yabune, Toshihiro Yonezu, Koichi Kato, Yuki Ishigure
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Patent number: 11400556Abstract: 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: GrantFiled: June 4, 2020Date of Patent: August 2, 2022Assignee: JTEKT CORPORATIONInventors: Shuntaro Takasu, Yuki Ishigure, Hisashi Otani, Toshihiro Yonezu
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Publication number: 20210132578Abstract: 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: ApplicationFiled: October 20, 2020Publication date: May 6, 2021Applicant: JTEKT CORPORATIONInventors: Natsuki YABUNE, Toshihiro YONEZU, Koichi KATO, Yuki ISHIGURE
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Publication number: 20200398398Abstract: 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: ApplicationFiled: June 4, 2020Publication date: December 24, 2020Applicant: JTEKT CORPORATIONInventors: Shuntaro TAKASU, Yuki ISHIGURE, Hisashi OTANI, Toshihiro YONEZU
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Patent number: 10133253Abstract: 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: GrantFiled: October 31, 2013Date of Patent: November 20, 2018Assignee: JTEKT CORPORATIONInventors: Akihiro Shimizu, Hiroaki Sugiura, Toshihiro Yonezu
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Publication number: 20150248124Abstract: 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: ApplicationFiled: October 31, 2013Publication date: September 3, 2015Applicant: JTEKT CORPORATIONInventors: Akihiro Shimizu, Hiroaki Sugiura, Toshihiro Yonezu
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Patent number: 8299743Abstract: 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: GrantFiled: January 12, 2010Date of Patent: October 30, 2012Assignee: JTEKT CorporationInventors: Satoshi Abeta, Toshihiro Yonezu
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Patent number: 8287329Abstract: 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: GrantFiled: October 14, 2009Date of Patent: October 16, 2012Assignee: JTekt CorporationInventors: Toshihiro Yonezu, Hiroaki Sugiura, Satoshi Ito, Yoshitaro Osaki
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Patent number: 7985120Abstract: 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: GrantFiled: June 27, 2008Date of Patent: July 26, 2011Assignee: JTEKT CorporationInventors: Yoshitaro Osaki, Toshihiro Yonezu, Makoto Nonoyama
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Patent number: 7818080Abstract: 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: GrantFiled: September 10, 2007Date of Patent: October 19, 2010Assignee: JTEKT CorporationInventors: Toshihiro Yonezu, Hiroaki Sugiura, Satoshi Abeta
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Patent number: 7809463Abstract: 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: GrantFiled: November 26, 2007Date of Patent: October 5, 2010Assignee: JTEKT CorporationInventors: Toshihiro Yonezu, Hiroaki Sugiura, Yoshitaro Osaki
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Publication number: 20100191365Abstract: 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: ApplicationFiled: January 12, 2010Publication date: July 29, 2010Applicant: JTEKT CORPORATIONInventors: Toshihiro Yonezu, Tatsuya Yogo, Satoshi Abeta
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Publication number: 20100188035Abstract: 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: ApplicationFiled: January 12, 2010Publication date: July 29, 2010Applicant: JTEKT CORPORATIONInventors: Satoshi ABETA, Toshihiro Yonezu
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Publication number: 20100105289Abstract: 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: ApplicationFiled: October 14, 2009Publication date: April 29, 2010Applicant: JTEKT CORPORATIONInventors: Toshihiro YONEZU, Hiroaki SUGIURA, Satoshi ITO, Yoshitaro OSAKI
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Publication number: 20090017734Abstract: 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: ApplicationFiled: June 27, 2008Publication date: January 15, 2009Applicant: JTEKT CorporationInventors: Yoshitaro Osaki, Toshihiro Yonezu, Makoto Nonoyama
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Publication number: 20080177407Abstract: 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: ApplicationFiled: September 10, 2007Publication date: July 24, 2008Applicant: JTEKT CorporationInventors: Toshihiro Yonezu, Hiroaki Sugiura, Satoshi Abeta
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Publication number: 20080132146Abstract: 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: ApplicationFiled: November 26, 2007Publication date: June 5, 2008Applicant: JTEKT CorporationInventors: Toshihiro YONEZU, Hiroaki Sugiura, Yoshitaro Osaki
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Patent number: 6721622Abstract: 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: GrantFiled: September 16, 2002Date of Patent: April 13, 2004Assignee: Toyoda Koki Kabushiki KaishaInventors: Tatsuya Inagaki, Toshihiro Yonezu, Satoshi Abeta
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Publication number: 20030114954Abstract: 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: ApplicationFiled: September 16, 2002Publication date: June 19, 2003Applicant: TOYODA KOKI KABUSHIKI KAISHAInventors: Tatsuya Inagaki, Toshihiro Yonezu, Satoshi Abeta
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Patent number: 5846121Abstract: 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: GrantFiled: May 12, 1997Date of Patent: December 8, 1998Assignee: Toyoda Koki Kabushiki KaishaInventors: Yutaka Hayashi, Makoto Nonoyama, Tomonari Kato, Toshihiro Yonezu, Nobuo Ohkubo