Patents by Inventor Ichiro Araie
Ichiro Araie 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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Patent number: 11981355Abstract: A carrier device is provided, which includes: a moving body; a top plate arranged above and separated from the moving body; a magnet plate including a plurality of permanent magnets arranged parallel to a predetermined moving direction on a lower surface of the top plate in a manner that adjacent polarities are different; a moving control coil unit including a plurality of exciting coils arranged on an upper surface of the moving body along and separated from the magnet plate; top gap control coil units including a plurality of exciting coils arranged on the upper surface of the moving body along and separated from the magnet plate; and a controller supplying drive currents respectively to the moving control coil unit and the top gap control coil units to make the moving body move along the moving direction, and controlling a top gap.Type: GrantFiled: June 9, 2021Date of Patent: May 14, 2024Assignee: Sodick Co., Ltd.Inventors: Ichiro Araie, Taro Hasegawa
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Patent number: 11806786Abstract: A stress controlled layer is constituted to include a compressive stress applied part that is a region to which a compressive stress is applied and a compressive stress non-applied part that is a region different from the compressive stress applied part. In a solidifying step, scanning of a laser beam or an electron beam is performed while a scanning direction for the compressive stress applied part is different from a scanning direction for the compressive stress non-applied part such that the compressive stress applied part expands further than the compressive stress non-applied part or the compressive stress non-applied part shrinks compared with the compressive stress applied part based on a relationship between the scanning direction and an expansion quantity or a shrinkage quantity at a time of temperature change or at a time of heat treatment.Type: GrantFiled: June 6, 2022Date of Patent: November 7, 2023Assignee: Sodick Co., Ltd.Inventors: Ichiro Araie, Toshio Kaji, Tatsuro Hayakawa, Hiroshi Amioka, Atsushi Hirota
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Patent number: 11794252Abstract: 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.Type: GrantFiled: May 31, 2021Date of Patent: October 24, 2023Assignee: Sodick Co., Ltd.Inventors: Ichiro Araie, Toshio Kaji, Yasuyuki Miyashita, Katsuhiko Kobayashi
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Publication number: 20220395908Abstract: A stress controlled layer is constituted to include a compressive stress applied part that is a region to which a compressive stress is applied and a compressive stress non-applied part that is a region different from the compressive stress applied part. In a solidifying step, scanning of a laser beam or an electron beam is performed while a scanning direction for the compressive stress applied part is different from a scanning direction for the compressive stress non-applied part such that the compressive stress applied part expands further than the compressive stress non-applied part or the compressive stress non-applied part shrinks compared with the compressive stress applied part based on a relationship between the scanning direction and an expansion quantity or a shrinkage quantity at a time of temperature change or at a time of heat treatment.Type: ApplicationFiled: June 6, 2022Publication date: December 15, 2022Applicant: Sodick Co., Ltd.Inventors: Ichiro ARAIE, Toshio KAJI, Tatsuro HAYAKAWA, Hiroshi AMIOKA, Atsushi HIROTA
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Patent number: 11472113Abstract: 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.Type: GrantFiled: September 6, 2021Date of Patent: October 18, 2022Assignee: Sodick Co., Ltd.Inventors: Kei Mochizuki, Yasuyuki Miyashita, Ichiro Araie
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Patent number: 11389876Abstract: 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.Type: GrantFiled: January 23, 2019Date of Patent: July 19, 2022Assignee: Sodick Co., Ltd.Inventors: Yasuyuki Miyashita, Shuji Okazaki, Ichiro Araie
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Publication number: 20220176635Abstract: 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.Type: ApplicationFiled: September 6, 2021Publication date: June 9, 2022Applicant: Sodick Co., Ltd.Inventors: Kei MOCHIZUKI, Yasuyuki MIYASHITA, Ichiro ARAIE
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Publication number: 20220143707Abstract: 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.Type: ApplicationFiled: November 3, 2021Publication date: May 12, 2022Applicant: Sodick Co., Ltd.Inventors: Yasuyuki MIYASHITA, Shuji OKAZAKI, Ichiro ARAIE, Shuichi KAWADA, Katsutaka MURANAKA
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Publication number: 20220118520Abstract: 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.Type: ApplicationFiled: September 21, 2021Publication date: April 21, 2022Applicant: Sodick Co., Ltd.Inventors: Masahiro TAKANO, Yuta YOSHIDA, Hiroyasu MIYAKAWA, Shuji OKAZAKI, Ichiro ARAIE, Yasuyuki MIYASHITA
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Publication number: 20220023949Abstract: 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.Type: ApplicationFiled: May 31, 2021Publication date: January 27, 2022Applicant: Sodick Co., Ltd.Inventors: Ichiro ARAIE, Toshio KAJI, Yasuyuki MIYASHITA, Katsuhiko KOBAYASHI
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Publication number: 20220001902Abstract: A carrier device is provided, which includes: a moving body; a top plate arranged above and separated from the moving body; a magnet plate including a plurality of permanent magnets arranged parallel to a predetermined moving direction on a lower surface of the top plate in a manner that adjacent polarities are different; a moving control coil unit including a plurality of exciting coils arranged on an upper surface of the moving body along and separated from the magnet plate; top gap control coil units including a plurality of exciting coils arranged on the upper surface of the moving body along and separated from the magnet plate; and a controller supplying drive currents respectively to the moving control coil unit and the top gap control coil units to make the moving body move along the moving direction, and controlling a top gap.Type: ApplicationFiled: June 9, 2021Publication date: January 6, 2022Applicant: Sodick Co., Ltd.Inventors: Ichiro ARAIE, Taro HASEGAWA
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Publication number: 20210245248Abstract: According to a several embodiment, provided is a method for manufacturing a molded object, including a material preparing step to prepare a material powder obtained by removing carbon from medium carbon steel or high carbon steel until a carbon content is 0.1 mass % or less, a molding step to form a desired molded object by a lamination molding method repeating the steps of: a recoating step to uniformly spread the material powder on a molding table to form a material powder layer; and a sintering step to irradiate a predetermined portion of the material powder layer with a laser beam to form a sintered layer; and a carburization step to subject the molded object to carburization after the molding step is performed.Type: ApplicationFiled: April 28, 2021Publication date: August 12, 2021Applicant: Sodick Co., Ltd.Inventors: Ichiro ARAIE, Kazufumi NAMBU
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Patent number: 11014164Abstract: A lamination molding apparatus, includes a material layer former to form a material layer; a first emitter to form a solidified layer by irradiating the material layer with a first beam; and a thermal adjuster to adjust a temperature of at least a portion of the solidified layer to at least one of a predetermined first temperature and a predetermined second temperature. The temperature of at least the portion of the solidified layer is adjusted to the first temperature, and then to the second temperature. When the first temperature is referred to as T1, the second temperature is referred to as T2, a martensite start temperature of the solidified layer is referred to as Ms, and a martensite finish temperature of the solidified layer is referred to as Mf, all of the following relations of T1?Mf, T1>T2, and T2?Ms are satisfied.Type: GrantFiled: August 28, 2018Date of Patent: May 25, 2021Assignee: Sodick Co., Ltd.Inventors: Ichiro Araie, Kazufumi Nambu, Atsushi Hirota, Hiroshi Amioka, Shuji Okazaki
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Patent number: 10946558Abstract: A lamination molding apparatus including a chamber covering a molding region; a laser beam source to emit a laser beam for sintering a material powder supplied on the molding region to form a sintered layer; and a scan unit to scan the laser beam. The laser beam has one or more spot shapes including at least an elongated shape, and the scan unit is configured to scan the laser beam, of which the spot shape is an elongated shape, in a lateral direction of the elongated shape, is provided.Type: GrantFiled: May 19, 2017Date of Patent: March 16, 2021Assignee: Sodick Co., Ltd.Inventors: Ichiro Araie, Shuji Okazaki
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Patent number: 10758980Abstract: A laminate molding apparatus calculates three-dimensional finished shape data after displacements occurred after molding of the initial molded object are completed based on a molding program corresponding to three-dimensional shape data of a molded object to be created, compares the three-dimensional finished shape data of the initial molded object with three-dimensional shape data to calculate a correction data of the displacement, creates a corrected molding program corresponding to corrected three-dimensional shape data in which coordinates of the surface of the molded object to be created by adding the correction data to the three-dimensional shape data, and molds a corrected molded object under the same molding conditions as when the initial molded object is molded based on the corrected molding program.Type: GrantFiled: February 1, 2018Date of Patent: September 1, 2020Assignee: SODICK CO., LTD.Inventor: Ichiro Araie
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Patent number: 10330925Abstract: According to the present invention, a galvanometer scanner, comprising: an operation portion having a rotary shaft; an inner sliding member configured to rotatably support the rotary shaft; a reaction force absorbing portion, provided outside the rotary shaft via the inner sliding member, configured to replace a force acting against the operation portion with an angular acceleration; an outer sliding member configured to rotatably support the reaction force absorbing portion; and a fixed portion provided outside the reaction force absorbing portion via the outer sliding member, is provided.Type: GrantFiled: November 16, 2017Date of Patent: June 25, 2019Assignee: Sodick Co., Ltd.Inventors: Ichiro Araie, Mitsuru Murai, Taro Hasegawa
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Publication number: 20190151947Abstract: 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.Type: ApplicationFiled: January 23, 2019Publication date: May 23, 2019Applicant: Sodick Co., Ltd.Inventors: Yasuyuki MIYASHITA, Shuji OKAZAKI, Ichiro ARAIE
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Patent number: 10239263Abstract: 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.Type: GrantFiled: September 17, 2015Date of Patent: March 26, 2019Assignee: Sodick Co., Ltd.Inventors: Ichiro Araie, Seishi Kobayashi, Yoshitaka Kato, Yasuyuki Miyashita
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Publication number: 20190061001Abstract: A lamination molding apparatus, includes a material layer former to form a material layer; a first emitter to form a solidified layer by irradiating the material layer with a first beam; and a thermal adjuster to adjust a temperature of at least a portion of the solidified layer to at least one of a predetermined first temperature and a predetermined second temperature. The temperature of at least the portion of the solidified layer is adjusted to the first temperature, and then to the second temperature. When the first temperature is referred to as T1, the second temperature is referred to as T2, a martensite start temperature of the solidified layer is referred to as Ms, and a martensite finish temperature of the solidified layer is referred to as Mf, all of the following relations of T1?Mf, T1>T2, and T2?Ms are satisfied.Type: ApplicationFiled: August 28, 2018Publication date: February 28, 2019Applicant: Sodick Co., Ltd.Inventors: Ichiro ARAIE, Kazufumi NAMBU, Atsushi HIROTA, Hiroshi AMIOKA, Shuji OKAZAKI
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Publication number: 20180264550Abstract: A laminate molding apparatus calculates three-dimensional finished shape data after displacements occurred after molding of the initial molded object are completed based on a molding program corresponding to three-dimensional shape data of a molded object to be created, compares the three-dimensional finished shape data of the initial molded object with three-dimensional shape data to calculate a correction data of the displacement, creates a corrected molding program corresponding to corrected three-dimensional shape data in which coordinates of the surface of the molded object to be created by adding the correction data to the three-dimensional shape data, and molds a corrected molded object under the same molding conditions as when the initial molded object is molded based on the corrected molding program.Type: ApplicationFiled: February 1, 2018Publication date: September 20, 2018Applicant: Sodick Co., Ltd.Inventor: Ichiro ARAIE