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Patent Agency Ranking
公开(公告)号：US20230390871A1
公开(公告)日：2023-12-07
申请号：US18236167
申请日：2023-08-21
Inventor： Izuru NAKAI , Kazuki FUJIWARA , Koji FUNAMI
Abstract: An estimation model generation device is a device that generates an estimation model for estimating a processing state of laser processing. First thermal radiation, first visible light, first reflected light, and first laser light are observed from a workpiece during laser processing by a first device, and the device includes an information acquiring section that acquires first waveform data including a first waveform and a second waveform for at least two of the first thermal radiation, the first visible light, the first reflected light, and the first laser light, an estimation model generating section that performs machine learning by using teacher data having the first waveform data as an explanatory variable and the processing state as a target variable in association with each other to generate a first estimation model for estimating the processing state by the first device, and a storage that stores the first estimation model.
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公开(公告)号：US20230384282A1
公开(公告)日：2023-11-30
申请号：US18233954
申请日：2023-08-15
Inventor： Kazuki FUJIWARA , Koji FUNAMI , Izuru NAKAI
IPC: G01N33/207 , G01N21/95
CPC classification number: G01N33/207 , G01N21/95
Abstract: A determination method for determining a processing state includes detecting, using an optical sensor, at least one of heat radiation light, visible light, and reflected light generated at a welded portion formed at a surface of a workpiece by emission of a laser beam on the workpiece, obtaining, from the optical sensor, a signal indicating a change in one of heat radiation, visible light, and reflected light in a time section corresponding to a welding time of each workpiece, determining, as the processing state, the position and number of molten shape abnormality in a welded region having a molten length and a molten width by inputting a feature quantity to a determination model that determines the processing state, the feature quantity including signal intensity of the signal, the molten shape abnormality occurring when a foreign substance exists at an overlapping surface of the workpiece, and outputting a determination result.
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3.发明公开公开(公告)号：US20240261907A1
公开(公告)日：2024-08-08
申请号：US18625968
申请日：2024-04-03
Inventor： Koji FUNAMI
CPC classification number: B23K31/125 , B23K26/21 , B23K26/705
Abstract: A laser welding quality inspection method of a welded portion between a joining object and a joined object, when the joining object and the joined object are welded by being irradiated with a laser beam, the method includes: acquiring first data indicating a signal intensity of thermal radiation light radiated from the welded portion during the welding; acquiring second data indicating a signal intensity of plasma light radiated from the welded portion during the welding; and determining whether or not the welded portion includes an abnormality based on a comparison between the signal intensity of the thermal radiation light and the signal intensity of the plasma light which are acquired.
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公开(公告)号：US20230390863A1
公开(公告)日：2023-12-07
申请号：US18234575
申请日：2023-08-16
Inventor： Kazuki FUJIWARA , Koji FUNAMI , Izuru NAKAI
IPC: B23K26/03 , B23K26/244 , G06N20/00
CPC classification number: B23K26/032 , B23K26/244 , G06N20/00
Abstract: A determination method for determining a processing state includes detecting, using an optical sensor, at least one of heat radiation light, visible light, and reflected light generated at a welded portion formed at a surface of a workpiece by emission of a laser beam on the workpiece, obtaining a signal indicating a change in at least one of heat radiation light, visible light, and reflected light in a time section corresponding to a welding time of each workpiece, calculating a feature quantity including a gradient of a straight line approximating a signal waveform of the signal in a predetermined section in the time section, determining, as the processing state, a shift including farness and closeness of a focal position of the laser beam in an emission direction of the laser beam by inputting the calculated feature quantity to a determination model that determines the processing state.
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公开(公告)号：US20220102789A1
公开(公告)日：2022-03-31
申请号：US17419181
申请日：2019-12-27
Inventor： Kazumichi SHIMIZU , Koji FUNAMI , Hiroshi TAKASAKI
IPC: H01M50/107 , H01M50/147 , H01M50/188
Abstract: Disclosed is a battery including: a battery can including a cylinder portion including an opening edge portion at one end portion thereof and a bottom portion closing the other end portion of the cylinder portion; an electrode body housed in the cylinder portion; and a sealing member fixed to the cylinder portion to seal an opening of an opening edge portion. The sealing member includes a lid portion covering the opening of the opening edge portion. A first engagement portion is formed in the end portion of the cylinder portion on the opening edge portion side, and a second engagement portion is formed in an end portion of the lid portion on an outer circumferential side. A first surface of the first engagement portion and a second surface of the second engagement portion are bonded, with the first surface and the second surface overlapping each other.
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