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公开(公告)号：US20220023949A1
公开(公告)日：2022-01-27
申请号：US17335041
申请日：2021-05-31
Applicant: Sodick Co., Ltd.
Inventor： Ichiro ARAIE , Toshio KAJI , Yasuyuki MIYASHITA , Katsuhiko KOBAYASHI
Abstract: A lamination molding method, which repeats a material layer forming step of forming a material layer and a solidifying step of irradiating an irradiation region of the material layer with laser beams scanned by n scanners to form a solidified layer, includes: a first dividing step and an irradiation order deciding step. In the first dividing step, the irradiation region is divided to 2n-1 or more divided regions by a plurality of first dividing lines in a manner that irradiation time of each of the divided regions to which the laser beams are simultaneously irradiated becomes equal. In the irradiation order deciding step, an irradiation order of the divided regions in the solidifying step is decided in a manner that the laser beams are simultaneously irradiated to the divided regions that are not adjacent, and the laser beams are not simultaneously irradiated to the divided regions that are adjacent.
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公开(公告)号：US20220118520A1
公开(公告)日：2022-04-21
申请号：US17480557
申请日：2021-09-21
Applicant: Sodick Co., Ltd.
Inventor： Masahiro TAKANO , Yuta YOSHIDA , Hiroyasu MIYAKAWA , Shuji OKAZAKI , Ichiro ARAIE , Yasuyuki MIYASHITA
Abstract: The present invention provides a system capable of estimating a molding state in a manufacturing process of the lamination molded object. According to the present invention, provided is a system for estimating a molding state in a manufacturing process of the lamination molded object including an image acquisition unit and an analysis unit. The lamination molded object is manufactured by repeating a material layer forming step of forming a material layer by supplying material powder onto a molding region and a solidified layer forming step of forming a solidified layer by irradiating the material layer with a laser beam. The image acquisition unit is configured to acquire image data of a spatter generated around a molten pool formed by irradiation with the laser beam. The analysis unit is configured to analyze the image data to estimate a parameter representing the molding state.
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公开(公告)号：US20230132245A1
公开(公告)日：2023-04-27
申请号：US17874246
申请日：2022-07-26
Applicant: Sodick Co., Ltd.
Inventor： Yasuyuki MIYASHITA
IPC: B22F10/38 , B22F10/28 , B22F12/41 , B22F12/53 , B22F12/67 , B22F10/85 , B22F10/40 , B33Y10/00 , B33Y30/00 , B33Y50/02
Abstract: A method for preparing an additive manufacturing program includes a loading step, a dividing step, an overhang calculating step, a subdividing step, a maintaining step, and an outputting step. In the loading step, a three-dimensional model is loaded. In the dividing step, the three-dimensional model is divided into divided layers. In the overhang calculating step, an overhang angle or overhang length of the divided layer is calculated. In the subdividing step, at least a part of the divided layer including an overhang portion is subdivided into two or more in a lamination direction. In the maintaining step, neither subdivision of the divided layer nor addition of a support structure supporting the divided layer is performed. The subdividing step and the maintaining step are selectively performed based on the overhang angle or overhang length. In the outputting step, an additive manufacturing program defining a command pertaining to additive manufacturing is output.
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公开(公告)号：US20160096325A1
公开(公告)日：2016-04-07
申请号：US14856864
申请日：2015-09-17
Applicant: Sodick, Co., Ltd.
Inventor： Ichiro ARAIE , Seishi KOBAYASHI , Yoshitaka KATO , Yasuyuki MIYASHITA
IPC: B29C67/00
CPC classification number: B29C67/0077 , B29C64/153 , B29C64/386 , B33Y10/00 , B33Y30/00 , B33Y50/02
Abstract: A powder sintering lamination molding method which can improve the quality of the molded product without extending the time required for the lamination molding. A powder sintering lamination molding method, including the steps of, irradiating an irradiation region of the sliced layer of a molded product surrounded by an outline profile with a laser to selectively sinter the material powder of the material powder layer within the irradiation region; wherein a cooling period is provided after the laser is irradiated along the first line and before the laser is irradiated along the second line.
Abstract translation: 一种粉末烧结层压成型方法，其可以在不延长层压成型所需时间的情况下提高成型品的质量。 一种粉末烧结层压成型方法，包括以下步骤：用激光照射由轮廓轮廓包围的成型体的切片层的照射区域，以选择性地烧结辐射区域内的材料粉末层的材料粉末; 其中在沿着第一线照射激光器之后并且沿着第二线路照射激光器之前提供冷却周期。
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公开(公告)号：US20210402477A1
公开(公告)日：2021-12-30
申请号：US17145400
申请日：2021-01-11
Applicant: Sodick Co., Ltd.
Inventor： Yasuyuki MIYASHITA
IPC: B22F10/366 , B22F12/33 , B22F12/41 , B22F12/49 , B22F12/90 , B22F12/48 , B22F10/28 , B33Y10/00 , B33Y30/00
Abstract: A lamination molding apparatus includes a molding room, a chamber, a chamber window, a molding table, a molding table driving device, surrounding walls, an irradiation device, a measuring unit, and a controller. The measuring unit includes a first measuring device acquiring a measured value of a light intensity, and a second measuring device acquiring a value of a beam diameter, and measures laser beams outputted based on set values of light intensity during molding. The controller determines an abnormality has occurred when a slope of a linear function obtained from a relationship between the measured value of the light intensity and the value of the beam diameter at a predetermined height is out of a predetermined range, or when a slope of a linear function obtained from a relationship between the measured value of the light intensity and a value of a focal position is out of a predetermined range.
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Patent Agency Ranking
公开(公告)号：US20210170526A1
公开(公告)日：2021-06-10
申请号：US17035758
申请日：2020-09-29
Applicant: SODICK CO., LTD.
Inventor： Atsushi KAWAMURA , Kensuke KASHIMURA , Toshio KAJI , Yoshifumi ICHIKAWA , Yasuyuki MIYASHITA
IPC: B23K26/082 , B22F3/105
Abstract: An irradiation device of a lamination molding apparatus includes: at least one laser source, generating a laser beam; a first galvano scanner, scanning the laser beam; a second galvano scanner, scanning the laser beam; and an irradiation controller, controlling the laser source, the first galvano scanner, and the second galvano scanner. Irradiable ranges of the laser beams by using the first galvano scanner and the second galvano scanner respectively include an entire of a molding region. A first X-axis galvano mirror and a first Y-axis galvano mirror of the first galvano scanner and a second X-axis galvano mirror and a second Y-axis galvano mirror of the second galvano scanner are disposed to be plane-symmetric to each other.
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公开(公告)号：US20190151947A1
公开(公告)日：2019-05-23
申请号：US16254620
申请日：2019-01-23
Applicant: Sodick Co., Ltd.
Inventor： Yasuyuki MIYASHITA , Shuji OKAZAKI , Ichiro ARAIE
IPC: B22F3/105
Abstract: A laminating and shaping apparatus includes a laser radiation unit configured to radiate a laser to a powder layer and form sintered sections, an imaging unit configured to image the sintered sections, a calculation device configured to calculate actual laser radiation positions from positions of the sintered sections and calculate a positional deviation of the laser radiation position at each of the sintered sections, and a correction device configured to correct the actual laser radiation position of each of the sintered sections to a target laser radiation position. The laser radiation unit forms sintered sections to surround the irradiation region by performing laser radiation on places including outermost positions in the irradiation region, and as the recoater head is moved in the horizontal uniaxial direction after imaging of the plurality of sintered sections by the imaging unit, at least a plurality of sintered sections are removed from the irradiation region.
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公开(公告)号：US20220176635A1
公开(公告)日：2022-06-09
申请号：US17467293
申请日：2021-09-06
Applicant: Sodick Co., Ltd.
Inventor： Kei MOCHIZUKI , Yasuyuki MIYASHITA , Ichiro ARAIE
IPC: B29C64/386 , B33Y30/00 , B33Y50/00 , B29C64/268 , B29C64/277
Abstract: A calibration method of an additive manufacturing apparatus includes an irradiation trace forming step, an imaging step, a specifying step, and a correction step. The irradiation trace forming step scans laser beams with each of a plurality of scanners with respect to a plurality of target positions on a calibration plate installed on a molding region, and forms a plurality of irradiation traces having different shapes for each of the plurality of scanners. The imaging step simultaneously images the plurality of irradiation traces formed with respect to the same target position. The specifying step specifies a plurality of irradiated positions of the laser beam scanned by each of the plurality of scanners. The correction step generates correction data that specifies a deviation amount at any point of a laser coordinate system related to each of the plurality of scanners.
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公开(公告)号：US20220143707A1
公开(公告)日：2022-05-12
申请号：US17518523
申请日：2021-11-03
Applicant: Sodick Co., Ltd.
Inventor： Yasuyuki MIYASHITA , Shuji OKAZAKI , Ichiro ARAIE , Shuichi KAWADA , Katsutaka MURANAKA
Abstract: An additive manufacturing apparatus of the disclosure includes: a data acquiring device which acquires at least one of first data showing an irradiation state of a laser beam, second data showing an inert gas state, and third data showing a formation state of a material layer and fourth data showing a manufacturing position state; and a determination device which determines whether or not there is an abnormality in a manufacturing state of a solidified layer based on the fourth data and identifies factors of abnormalities from the operating state of the additive manufacturing apparatus to the manufacturing state of the solidified layer based on at least one of the acquired first to third data.
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公开(公告)号：US20180141125A1
公开(公告)日：2018-05-24
申请号：US15694868
申请日：2017-09-04
Applicant: Sodick Co., Ltd.
Inventor： Yasuyuki MIYASHITA , Shuji OKAZAKI , Ichiro ARAIE
CPC classification number: B22F3/1055 , B22F2003/1056 , B22F2003/1057 , B22F2203/03 , B22F2999/00 , B33Y30/00 , B33Y50/02 , Y02P10/295
Abstract: A laminating and shaping apparatus includes a laser radiation unit configured to radiate a laser to a powder layer and form sintered sections, an imaging unit configured to image the sintered sections, a calculation device configured to calculate actual laser radiation positions from positions of the sintered sections and calculate a positional deviation of the laser radiation position at each of the sintered sections, and a correction device configured to correct the actual laser radiation position of each of the sintered sections to a target laser radiation position. The laser radiation unit forms sintered sections to surround the irradiation region by performing laser radiation on places including outermost positions in the irradiation region, and as the recoater head is moved in the horizontal uniaxial direction after imaging of the plurality of sintered sections by the imaging unit, at least a plurality of sintered sections are removed from the irradiation region.
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