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公开(公告)号：US20230158606A1
公开(公告)日：2023-05-25
申请号：US18158457
申请日：2023-01-23
Inventor： JINGBO WANG , TSUTOMU SUGIYAMA , SHUNSUKE KAWAI , KENZO SHIBATA , MASASHI ISHIGURO , ATSUHIRO KAWAMOTO
IPC: B23K26/21 , B23K26/082 , B23K26/08
CPC classification number: B23K26/21 , B23K26/082 , B23K26/0884
Abstract: Provided is a laser welding method including a welding step of welding a workpiece by irradiating a surface of a workpiece with a laser beam that is swept two-dimensionally while being advanced in an X direction. In the welding step, the laser beam is swept to draw a predetermined pattern on the surface of the workpiece. Additionally, drawing speed and output of the laser beam are controlled to have an equal amount of heat input per unit drawing length in the predetermined pattern over the entire length of the predetermined pattern. The predetermined pattern is a continuous pattern in which two annular patterns are in contact with each other at one point.
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公开(公告)号：US20220072662A1
公开(公告)日：2022-03-10
申请号：US17527495
申请日：2021-11-16
Inventor： JINGBO WANG , MASATOSHI NISHIO , KENZO SHIBATA , MANABU NISHIHARA
IPC: B23K26/384 , B23K26/062 , B23K26/064 , B23K26/035
Abstract: A laser processing device includes a laser oscillator, optical fiber (90), beam control mechanism (20), and a laser light emitting head. The laser oscillator includes first and second laser oscillation units that generate first and second laser light rays (LB1) and (LB2), respectively. Beam control mechanism (20) includes optical path changing and holding mechanism (40) that is disposed between second condenser lens (32) that condenses second laser light (LB2) and dichroic mirror (33) that multiplexes first and second laser light rays (LB1) and (LB2) and causes the multiplexed light to be incident on optical fiber (90).
Beam control mechanism (20) changes an incident position of second laser light (LB2) on optical fiber (90).-
公开(公告)号：US20230013501A1
公开(公告)日：2023-01-19
申请号：US17935111
申请日：2022-09-25
Inventor： JINGBO WANG , TSUTOMU SUGIYAMA , SHUNSUKE KAWAI , KENZO SHIBATA , MASASHI ISHIGURO
IPC: B23K26/21
Abstract: A laser welding method includes a welding step of applying a laser beam to a surface of a workpiece while the laser beam is caused to advance in an X-direction and scanning with the laser beam is simultaneously performed in a Y-direction intersecting the X-direction. The welding step includes a first weaving step of causing the laser beam to weave in the Y-direction with first amplitude (A1), and a second weaving step of causing the laser beam to weave with a predetermined amplitude smaller than first amplitude (A1) at both end portions of a weaving trajectory drawn by the laser beam in the first weaving step.
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公开(公告)号：US20220118557A1
公开(公告)日：2022-04-21
申请号：US17531291
申请日：2021-11-19
Inventor： JINGBO WANG , MASATOSHI NISHIO , KENZO SHIBATA , MANABU NISHIHARA
IPC: B23K26/70
Abstract: Provided is a laser processing head including: shield holder (23) that has opening (23b) formed through shield holder (23) and optical sensor mounting hole (23c) formed in an inner peripheral surface of opening (23b); optical sensor (24) that has light receiving surface (24a) facing the inside of opening (23b) through optical sensor mounting hole (23c) and is attached to shield holder (23); and second protective glass (25) that has an outer peripheral surface facing light receiving surface (24a) of optical sensor (24) and is provided in opening (23b), second protective glass (25) transmitting a laser beam emitted by a laser oscillator to emit the laser beam toward a workpiece, and second protective glass (25) including reflective coating film (25a) formed in a region in the outer peripheral surface except an opposed region facing light receiving surface (24a) of optical sensor (24).
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公开(公告)号：US20220088709A1
公开(公告)日：2022-03-24
申请号：US17541166
申请日：2021-12-02
Inventor： JINGBO WANG , MASATOSHI NISHIO , KENZO SHIBATA , MANABU NISHIHARA
IPC: B23K26/21
Abstract: Laser welding device (1000) includes: laser oscillator (100); optical fiber (300) that transmits a laser beam (LB) generated in laser oscillator (100); laser beam emitting head (400) that is attached to the emission end of optical fiber (300) and emits laser beam (LB) toward workpiece (600); manipulator (500) with laser beam emitting head (400) attached thereto; and controller (200) that controls laser beam emitting head (400) so as to cause laser beam (LB) to be scanned three-dimensionally on the surface of workpiece (600). Controller (200) controls laser beam emitting head (400) so as to change a focal position of laser beam (LB) in accordance with a shape of a welded portion in workpiece (600).
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Patent Agency Ranking
公开(公告)号：US20190271588A1
公开(公告)日：2019-09-05
申请号：US16417760
申请日：2019-05-21
Inventor： JINGBO WANG , DOUKEI NAGAYASU , YOSHIAKI TAKENAKA , HITOSHI NISHIMURA , MAKOTO RYUDO , KIYOTAKA EIZUMI , HIDEAKI YAMAGUCHI , RYO ISHIKAWA , MASATOSHI NISHIO , TAKASI KAKUTANI , YASUSHI MUKAI , MITSURU MUKAI , HIROYUKI HAYASHIKAWA
Abstract: A laser device includes the following components: a laser resonator for emitting a laser beam; a condenser lens (21) for collecting the laser beam emitted from the laser resonator; an optical fiber (7) for transmitting the laser beam collected by the condenser lens (21); at least one light sensor (5) opposing a light receiving surface of the condenser lens (21) and outside the optical path of the laser beam, the at least one light sensor (5) detecting the amount of return light from the condenser lens (21); and a controller for determining the presence of an abnormality when the value of the amount detected by any of the at least one light sensor (5) is greater than the predetermined maximum threshold.
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公开(公告)号：US20190030641A1
公开(公告)日：2019-01-31
申请号：US16072232
申请日：2017-03-07
Inventor： DOUKEI NAGAYASU , HITOSHI NISHIMURA , MAKOTO RYUDO , JINGBO WANG , YOSHIAKI TAKENAKA , KIYOTAKA EIZUMI , HIDEAKI YAMAGUCHI , RYO ISHIKAWA , MASATOSHI NISHIO
IPC: B23K26/035 , G02B6/28 , B23K26/064 , H01S3/10 , G02B6/42
CPC classification number: B23K26/035 , B23K26/064 , G02B6/2848 , G02B6/4206 , G02B6/425 , H01S3/10
Abstract: A fiber coupling device includes a housing and a window provided in the housing. The fiber coupling device is configured to collectively guide plural laser beams to at least a first fiber, the plurality of laser beams each being emitted from a corresponding one of plural external laser light sources and entering through a laser beam inlet. The housing is configured such that the laser beams enter the housing from the laser beam inlet. The window is provided inside the housing and faces the laser beam inlet. The fiber coupling device is not required to detach when an optical axis is adjusted.
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公开(公告)号：US20240261896A1
公开(公告)日：2024-08-08
申请号：US18641270
申请日：2024-04-19
Inventor： NAOHIRO MURAYAMA , MASATOSHI NISHIO , JINGBO WANG
IPC: B23K26/08 , B23K26/064
CPC classification number: B23K26/08 , B23K26/064
Abstract: Robot arm (11) is provided with support member (30). Support member (30) includes first support (31), second support (32), and rotator (36). First support (31) supports linear member (4). Second support (32) supports transmission fiber (3) at a position farther from robot arm (11) than first support (31). Rotator (36) rotatably supports second support (32) about rotation axis (37) extending along a radial direction of transmission fiber (3).
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9.发明公开公开(公告)号：US20240082950A1
公开(公告)日：2024-03-14
申请号：US18513665
申请日：2023-11-20
Inventor： JIN MATSUZAKA , SHUNSUKE KAWAI , JINGBO WANG , KENZO SHIBATA
IPC: B23K26/064 , B23K26/03
CPC classification number: B23K26/064 , B23K26/032
Abstract: The laser processing device includes a laser head that emits laser light and a camera that acquires a surface image of a processing member after being irradiated with the laser light. The laser processing device further includes an image processor that performs image processing on an acquired surface image and calculates a diameter of a processing mark, and an autofocus controller that derives an optimum focal position of the laser light based on the diameter of the processing mark. In addition, the laser processing device includes a driver that moves the laser head in an emission direction of the laser light to allow the laser light to be condensed at an optimum focal position based on the derivation result of the autofocus controller.
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公开(公告)号：US20220072655A1
公开(公告)日：2022-03-10
申请号：US17529911
申请日：2021-11-18
Inventor： JINGBO WANG , MASATOSHI NISHIO , KENZO SHIBATA , MANABU NISHIHARA
Abstract: A laser processing device includes a laser oscillator, first to third optical fibers, a beam control mechanism, and first to third laser light emitting heads attached to the first to third optical fibers, respectively. The beam control mechanism includes a condenser lens, first to third optical path changing mechanisms provided on an optical path of laser light LB after being transmitted through the condenser lens, and a controller that controls operations of the first to third optical path changing mechanisms. The beam control mechanism causes the laser light to be emitted from the first laser light emitting head via the selected first optical fiber.
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