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公开(公告)号：US20210331245A1
公开(公告)日：2021-10-28
申请号：US17233752
申请日：2021-04-19
发明人： Ryuichi NARITA , Shuji TANIGAWA , Yasuyuki FUJIYA , Claus THOMY , Dieter TYRALLA , Thomas SEEFELD
IPC分类号： B22F10/368 , B22F10/85 , B22F12/49 , B22F12/90 , B22F10/28 , B33Y10/00 , B33Y30/00 , B33Y50/02
摘要： A method of monitoring an additive manufacturing process according to at least one embodiment of the present disclosure includes the steps of acquiring information on a temperature of a region upstream of a melt pool in a scanning direction of an energy beam, the melt pool being formed by irradiating a raw material with the energy beam, acquiring a parameter indicating a cooling rate of the region based on the information on the temperature, and determining a formation status based on the parameter.
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公开(公告)号：US20210276132A1
公开(公告)日：2021-09-09
申请号：US17158264
申请日：2021-01-26
发明人： Yoshinao KOMATSU , Kazuhiro YOSHIDA , Saneyuki GOYA , Akiko INOUE , Yasuyuki FUJIYA , Ryuichi NARITA
IPC分类号： B23K26/38 , B23K26/142 , B23K26/16 , B23K26/70
摘要： A laser processing device includes a laser irradiation unit that performs processing on a workpiece by using a laser while scanning a workpiece surface to form a kerf, jet nozzles that respectively form jet flows flowing toward a bottom surface of the kerf on front and rear sides in a scanning direction of the laser, and an intake part that sucks, above injection ports of the jet nozzles, a gas in a region surrounded by the jet flows from the front and rear sides. In a state in which a certain region of the kerf is isolated by the jet flows, the gas is sucked from this region by the intake part. As a result, a suction force by the intake part can reach the bottom surface of the kerf.
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公开(公告)号：US20210162508A1
公开(公告)日：2021-06-03
申请号：US16613543
申请日：2017-08-08
发明人： Ryuichi NARITA , Toshiya WATANABE , Akio KONDOU , Masashi KITAMURA , Hidetaka HARAGUCHI , Shuji TANIGAWA , Claus THOMY , Henry KOEHLER
IPC分类号： B22F12/90 , G01N25/18 , G01N25/72 , B22F10/28 , B22F10/36 , B33Y10/00 , B33Y30/00 , B33Y50/02
摘要： A forming defect detection system for a three-dimensional additive manufacturing device which performs additive molding by emitting a laser beam to a powder bed is provided. This system specifies a candidate position of a forming defect on the basis of a change amount of a local temperature measured in an irradiated part of a powder bed irradiated by a laser beam. The system calculates a cooling speed at the candidate position on the basis of a temperature distribution and determines whether a forming defect exists on the basis of the cooling speed.
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公开(公告)号：US20200306889A1
公开(公告)日：2020-10-01
申请号：US16784991
申请日：2020-02-07
发明人： Saneyuki GOYA , Ryuichi NARITA , Rudolf WEBER , Christian FREITAG , Ehsan ZAHEDI
IPC分类号： B23K26/382 , B23K26/082 , B23K26/14 , B23K26/0622 , B23K26/062
摘要： A laser processing method includes a first step of irradiating a surface of a composite material with laser to form a hole processing groove on the composite material in a manner of scanning paths from an outside corresponding to an inner peripheral surface side of the through hole to be formed to an inside corresponding to a center side of the through hole, the paths being across a width direction of the hole processing groove; and a second step of irradiating and penetrating through the hole processing groove with the laser to form the through hole in a manner of scanning paths from the outside to the inside after the first step, the paths being across the width direction of the hole processing groove. The laser used at the first step has a smaller heat input amount per unit time than the laser used at the second step.
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公开(公告)号：US20160221120A1
公开(公告)日：2016-08-04
申请号：US14914222
申请日：2014-02-26
发明人： Ryuichi NARITA , Saneyuki GOYA , Kenji MUTA , Toshiya WATANABE , Masao WATANABE
IPC分类号： B23K26/06
CPC分类号： B23K26/0665 , B23K26/0608 , B23K26/0648 , B23K26/0652 , B23K26/0676
摘要： In order to make focal positions of laser beams having different wavelength bands coincide with one another: a laser output device that oscillates laser beams having plural wavelength bands; a spectrometer that respectively disperses the laser beams of the respective wavelength bands; and condensers that respectively condense the laser beams dispersed by the spectrometer independently and match focal points thereof to the same position, are included.
摘要翻译： 为了使具有不同波长带的激光束的焦点位置彼此一致：激光输出装置，其振荡具有多个波长带的激光束; 分别分散各波长带的激光束的光谱仪; 并且包括分别将由光谱仪分散的激光束分别冷凝并将其焦点匹配到相同位置的电容器。
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