Patents by Inventor Kyohei ISHIKAWA
Kyohei ISHIKAWA 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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Publication number: 20230321750Abstract: A laser machining apparatus includes an actuator that changes relative positions of a machining head and a workpiece; a control unit that controls in machining execution the laser oscillator, the machining head, and the actuator based on a machining parameter; a machining state observation unit that detects, from process light that is light generated from the workpiece by laser beam irradiation, light intensities in a plurality of predetermined wavelength bands as a plurality of optical sensor signals; a feature extraction unit that extracts at least one of features, the features being obtainable from an index of correlation between the plurality of optical sensor signals and from one of the optical sensor signals; and a correction quantity calculation unit that determines the machining parameter to be corrected as a correction parameter and a correction quantity for the correction parameter based on the at least one of the features.Type: ApplicationFiled: August 27, 2020Publication date: October 12, 2023Applicant: Mitsubishi Electric CorporationInventors: Kyohei ISHIKAWA, Masaki SEGUCHI, Motoaki NISHIWAKI, Kenta FUJII, Tomotaka KATSURA
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Publication number: 20230228914Abstract: An optical device includes, in sequence, a surface formed of a metal oxide, a samarium oxide-containing layer in contact with the surface formed of a metal oxide, and a magnesium fluoride-containing layer in contact with the samarium oxide-containing layer so as to suppress optical absorption resulting from high-rate sputter deposition of a magnesium fluoride-containing layer on a surface formed of a metal oxide.Type: ApplicationFiled: March 17, 2023Publication date: July 20, 2023Inventors: Hideo Akiba, Kyohei Ishikawa
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Publication number: 20230211435Abstract: A laser machining system includes a state measurement unit that observes an internal state of a machining head or a varying state of a workpiece and outputs a machining state signal; an inference unit that determines a degree of quality of the laser beam machining as an inference result for each of machining defects concerning at least one type of machining defect on the basis of the machining state signal; a machining monitoring unit that monitors the workpiece for presence or absence of the machining defect and outputs a monitoring signal; a machining decision unit that decides whether there is the machining defect and determines a quality of the machining as a decision result; and a machinery safety unit that outputs, on the basis of the inference result and the decision result, a control signal that gives an instruction on whether to stop or continue the laser beam machining.Type: ApplicationFiled: May 29, 2020Publication date: July 6, 2023Applicant: Mitsubishi Electric CorporationInventors: Motoaki NISHIWAKI, Kenta FUJII, Kyohei ISHIKAWA
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Publication number: 20230080251Abstract: A control device that executes machining to cut a workpiece into a part and a remaining material; a detection unit that determines, as a time-series signal, a result of observing in time series a state of the workpiece; a machining state evaluation unit that determines, as evaluation information, a result of evaluation on a state of the machining for each of sections obtained by dividing the machining path, based on the time-series signal; an evaluation information storage unit that stores contour line evaluation information in which a contour line is associated with the evaluation information; and a sorting operation determination unit that determines a sorting control command for controlling sorting operation in which the part is taken out from a position where the workpiece is machined and moved to a target position, based on the contour line evaluation information; are provided.Type: ApplicationFiled: March 17, 2020Publication date: March 16, 2023Applicant: Mitsubishi Electric CorporationInventors: Kenta FUJII, Motoaki NISHIWAKI, Kyohei ISHIKAWA
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Publication number: 20220373717Abstract: A film comprises an amorphous transition metal oxide as a main component, and 1.0 at % or more of hydrogen.Type: ApplicationFiled: May 11, 2022Publication date: November 24, 2022Inventors: Tatsuki Abe, Kyohei Ishikawa, Kazuhiro Hoshino, Takahito Chibana, Hiroaki Kobayashi
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Patent number: 11474512Abstract: A machining failure detection device includes a machining light measurement unit that measures machining light generated at a machining point during machining; a machining sound measurement unit that measures machining sound generated at the machining point; and a computation unit that determines whether a machining failure has occurred in the machining. The computation unit includes a feature extraction unit, a determination value calculation unit, and a determination unit. The feature extraction unit extracts a machining light feature from a machining light signal measured by the machining light measurement unit, and extracts a machining sound feature from a machining sound signal measured by the machining sound measurement unit. The determination value calculation unit calculates a combined failure determination value on the basis of the machining light feature and the machining sound feature.Type: GrantFiled: February 25, 2020Date of Patent: October 18, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Masaki Seguchi, Kyohei Ishikawa, Teruaki Fukuoka
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Patent number: 11446760Abstract: A laser machining apparatus includes: a laser oscillator to emit a laser beam; a focusing lens to irradiate a workpiece with the laser beam; a focus position control mechanism disposed between the laser oscillator and the focusing lens and disposed on the optical path of the laser beam and that controls the divergence angle of the laser beam and the incident diameter of the laser beam incident on the focusing lens; a laser beam deflector to deflect the laser beam before the laser beam is incident on the focusing lens; and an emitting angle control mechanism to control the emitting angle of the laser beam that exits from the focusing lens after being deflected by the laser beam deflector.Type: GrantFiled: September 5, 2017Date of Patent: September 20, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Kyohei Ishikawa, Naoyuki Nakamura, Tatsuya Yamamoto, Masaki Seguchi
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Patent number: 11441668Abstract: Provided are a motor device and a method for manufacturing the same that can accurately and consistently provide a support shaft to a case and enhance the strength for fixing the support shaft to the case. A small-diameter part having a smaller diameter than a large-diameter part is formed through drawing. The large-diameter part and a step part are embedded in a gear case. The small-diameter part is exposed outside the gear case. The dimensional accuracy (dimensional tolerance ±?) of the external diameter of the small-diameter part is enhanced. The small-diameter part can be set, without rattling, in a lower mold for molding the gear case. Consequently, the support shaft can be accurately and consistently provided to the gear case. Because the large-diameter part and the step part are embedded in the gear case, the resistance of the support shaft against pulling from the gear case can be enhanced.Type: GrantFiled: October 8, 2019Date of Patent: September 13, 2022Assignee: MITSUBA CorporationInventors: Hiroyuki Uchimura, Kyohei Ishikawa, Yuta Nishino, Hiroki Aikyo
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Publication number: 20220226935Abstract: A laser machining system according to the present invention includes a laser machining tool, a detection unit that detects a machining state of the laser machining tool, a test machining condition generation unit that generates a machining condition including at least one control parameter settable to the laser machining tool, a machining determination unit that determines quality of machining based on the machining state detected by the detection unit, a candidate condition generation unit that generates a candidate condition, which is a candidate for a machining condition to be set to the laser machining tool, based on a determination result from the machining determination unit and on a machining condition corresponding to the determination result, and a tolerance check unit that causes check machining to be performed for checking a machining tolerance using the candidate condition, where the machining tolerance indicates robustness of the candidate condition.Type: ApplicationFiled: June 28, 2019Publication date: July 21, 2022Applicant: Mitsubishi Electric CorporationInventors: Motoaki NISHIWAKI, Kenta FUJII, Kyohei ISHIKAWA, Masaki SEGUCHI, Hideyuki MASUI
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Publication number: 20220147036Abstract: A machining failure detection device includes a machining light measurement unit that measures machining light generated at a machining point during machining; a machining sound measurement unit that measures machining sound generated at the machining point; and a computation unit that determines whether a machining failure has occurred in the machining. The computation unit includes a feature extraction unit, a determination value calculation unit, and a determination unit. The feature extraction unit extracts a machining light feature from a machining light signal measured by the machining light measurement unit, and extracts a machining sound feature from a machining sound signal measured by the machining sound measurement unit. The determination value calculation unit calculates a combined failure determination value on the basis of the machining light feature and the machining sound feature.Type: ApplicationFiled: February 25, 2020Publication date: May 12, 2022Applicant: Mitsubishi Electric CorporationInventors: Masaki SEGUCHI, Kyohei ISHIKAWA, Teruaki FUKUOKA
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Publication number: 20220112937Abstract: Provided are a motor device and a method for manufacturing the same that can accurately and consistently provide a support shaft to a case and enhance the strength for fixing the support shaft to the case. A small-diameter part having a smaller diameter than a large-diameter part is formed through drawing. The large-diameter part and a step part are embedded in a gear case. The small-diameter part is exposed outside the gear case. The dimensional accuracy (dimensional tolerance ±?) of the external diameter of the small-diameter part is enhanced. The small-diameter part can be set, without rattling, in a lower mold for molding the gear case. Consequently, the support shaft can be accurately and consistently provided to the gear case. Because the large-diameter part and the step part are embedded in the gear case, the resistance of the support shaft against pulling from the gear case can be enhanced.Type: ApplicationFiled: October 8, 2019Publication date: April 14, 2022Applicant: MITSUBA CorporationInventors: Hiroyuki UCHIMURA, Kyohei ISHIKAWA, Yuta NISHINO, Hiroki AIKYO
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Publication number: 20220107629Abstract: A machining condition search device according to the disclosure includes a machining condition generation unit, a practical machining command unit, a machining evaluation unit, a prediction unit, an optimum machining condition calculation unit. The machining condition generation unit generates a machining condition defined by one or more control parameters settable on a machining apparatus. The practical machining command unit causes the machining apparatus to perform machining based on a generated machining condition. The machining evaluation unit generates an evaluation value of performed machining, on the basis of information indicating a machining result of the performed machining. The prediction unit predicts an evaluation value corresponding to a machining condition under which machining is not performed, on the basis of the evaluation value and the machining condition corresponding to the evaluation value.Type: ApplicationFiled: December 17, 2021Publication date: April 7, 2022Applicant: Mitsubishi Electric CorporationInventors: Hideyuki MASUI, Motoaki NISHIWAKI, Kenta FUJII, Kyohei ISHIKAWA, Masaki SEGUCHI
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Publication number: 20210162544Abstract: A laser processing apparatus includes a laser oscillator; a processing head; a driver that controls a relative positional relationship between a workpiece and the processing head; control circuitry that controls the laser oscillator and the driver in order for the laser beam to scan a processing path on the workpiece; detection circuitry that observes a state of the workpiece being processed and outputs a result of observation as a time series signal; processed state observation circuitry that obtains evaluation information including a determination result that indicates whether a processed state of the workpiece is satisfactory or defective by evaluating the processed state of the workpiece on the basis of the time series signal for each of a plurality of sections obtained by dividing the processing path; and estimation circuitry that estimates a cause of a defect on the basis of the evaluation information of two or more of the sections.Type: ApplicationFiled: April 26, 2019Publication date: June 3, 2021Applicant: Mitsubishi Electric CorporationInventors: Kenta FUJII, Motoaki NISHIWAKI, Nobuaki TANAKA, Masaki SEGUCHI, Kyohei ISHIKAWA
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Publication number: 20200341170Abstract: An optical device includes, in sequence, a surface formed of a metal oxide, a samarium oxide-containing layer in contact with the surface formed of a metal oxide, and a magnesium fluoride-containing layer in contact with the samarium oxide-containing layer so as to suppress optical absorption resulting from high-rate sputter deposition of a magnesium fluoride-containing layer on a surface formed of a metal oxide.Type: ApplicationFiled: April 21, 2020Publication date: October 29, 2020Inventors: Hideo Akiba, Kyohei Ishikawa
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Patent number: 10662512Abstract: Provided is an abrasion-resistant steel including a predetermined chemical composition, in which content (mass %) of Mo and B satisfy Mo×B>0.0010, a mass fraction of Mo2FeB2 is from 0.0010 to 0.10%, an area ratio of martensite in a central portion in a thickness direction is 70% or more, Ceq obtained by the following (Formula 1) is 0.80% or less, and a plate thickness exceeds 50 mm; Ceq=C+Mn/6+(Cu+Ni)/15+(Cr+Mo+V)/5??(Formula 1) wherein, in (Formula 1), C, Mn, Cu, Ni, Cr, Mo, and V are contents (mass %) of each element.Type: GrantFiled: September 14, 2017Date of Patent: May 26, 2020Assignee: NIPPON STEEL CORPORATIONInventor: Kyohei Ishikawa
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Publication number: 20190255649Abstract: A laser machining beam method is a method that is carried out by a laser beam machine including a laser oscillator that is a first laser oscillator which emits a pulse of a laser beam that is a first laser beam, and a laser oscillator that is a second laser oscillator which emits a pulse of a laser beam that is a second laser beam differing in wavelength or pulse width from the first laser beam. In the laser beam machining method, the first laser beam and the second laser beam are caused to alternate in irradiating a workpiece.Type: ApplicationFiled: September 26, 2017Publication date: August 22, 2019Applicant: Mitsubishi Electric CorporationInventors: Yoshiharu KUROSAKI, Tatsuya YAMAMOTO, Kyohei ISHIKAWA, Masayuki SAIKI
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Publication number: 20190193197Abstract: A laser machining apparatus includes: a laser oscillator to emit a laser beam; a focusing lens to irradiate a workpiece with the laser beam; a focus position control mechanism disposed between the laser oscillator and the focusing lens and disposed on the optical path of the laser beam and that controls the divergence angle of the laser beam and the incident diameter of the laser beam incident on the focusing lens; a laser beam deflector to deflect the laser beam before the laser beam is incident on the focusing lens; and an emitting angle control mechanism to control the emitting angle of the laser beam that exits from the focusing lens after being deflected by the laser beam deflector.Type: ApplicationFiled: September 5, 2017Publication date: June 27, 2019Applicant: Mitsubishi Electric CorporationInventors: Kyohei ISHIKAWA, Naoyuki NAKAMURA, Tatsuya YAMAMOTO, Masaki SEGUCHI
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Publication number: 20190062882Abstract: Provided is an abrasion-resistant steel including a predetermined chemical composition, in which content (mass %) of Mo and B satisfy Mo×B>0.0010, a mass fraction of Mo2FeB2 is from 0.0010 to 0.10%, an area ratio of martensite in a central portion in a thickness direction is 70% or more, Ceq obtained by the following (Formula 1) is 0.80% or less, and a plate thickness exceeds 50 mm; Ceq=C+Mn/6+(Cu+Ni)/15+(Cr+Mo+V)/5??(Formula 1) wherein, in (Formula 1), C, Mn, Cu, Ni, Cr, Mo, and V are contents (mass %) of each element.Type: ApplicationFiled: September 14, 2017Publication date: February 28, 2019Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventor: Kyohei ISHIKAWA