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公开(公告)号：US20230356282A1
公开(公告)日：2023-11-09
申请号：US18042636
申请日：2021-08-23
发明人： Toshiya SUZUKI , Naruhiko NOMURA , Koichi HAMADA , Yujiro TATSUMI
摘要： A method of manufacturing a press-formed product includes a heating step, a transportation step, and a pressing step. At the heating step, workpieces are heated while a first workpiece W1 is placed on a first group of struts 3 extending upward from a tray body 2, and a second workpiece W2 is placed on a second group of struts 3 to be located above the first workpiece W1 and overlap it. At the transportation step, the second workpiece W2, while located above the first workpiece W1 and overlapping it, is transported, together with the tray body 2, from the heating device 14 to the lifting location. At the lifting location, the second workpiece W2 is lifted upward by the transportation device 46 and the first workpiece W1 is lifted by the transportation device 46 before they are transported to their respective pressing locations.
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公开(公告)号：US20240246134A1
公开(公告)日：2024-07-25
申请号：US18564421
申请日：2022-08-03
发明人： Koichi HAMADA , Toshiya SUZUKI , Yujiro TATSUMI , Naruhiko NOMURA
IPC分类号： B21D22/26 , B23K26/322 , B23K101/18 , B23K103/04 , B23K103/10
CPC分类号： B21D22/26 , B23K26/322 , B23K2101/185 , B23K2103/04 , B23K2103/10
摘要： This structural member design method is a method for designing a structural member obtained by forming a tailored blank. The method includes: a weld setting step of performing crash analysis by numerical simulation on an analytical model of the structural member, and setting the position of the weld such that a fracture index of a first region is equal to or more than a specified value and the fracture indices of all remaining regions other than the first region are less than the specified value; and a removal region setting step of setting, after the weld setting step, a region including a portion corresponding to the first region in the joined end portion as a removal region where the exposed portion is formed.
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公开(公告)号：US20240207967A1
公开(公告)日：2024-06-27
申请号：US18288424
申请日：2022-04-26
CPC分类号： B23K9/124 , B23K31/02 , B62D27/023 , B62D25/04
摘要： A method of designing the width of the weld bead in a tailored blank includes: a model acquisition step for acquiring analysis model data containing elements for the first sheet, elements for the second sheet, and elements for the weld bead; a press-forming analysis step for performing press-forming analysis using the analysis model data to calculate deformation of the various elements when the tailored blank is press formed; and a bead-width designing step for deciding on a design value of the width of the weld bead for each of positions along the longitudinal direction of the weld bead in the tailored blank prior to press forming based on a press-forming-induced change in the width relating to the elements for the weld bead obtained through calculation, to generate bead-width design data indicating the relationship between a position along the longitudinal direction of the weld bead and the design value of the width of the weld bead.
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公开(公告)号：US20230330735A1
公开(公告)日：2023-10-19
申请号：US18042633
申请日：2021-08-23
发明人： Toshiya SUZUKI , Naruhiko NOMURA , Koichi HAMADA , Yujiro TATSUMI
摘要： A method of manufacturing a press-formed product includes a heating step, a transportation step, and a pressing step. At the heating step, a sheet-shaped heat storage member 5 and a sheet-shaped workpiece W1 placed above the heat storage member 5 are heated by a heating device 14 while overlapping in the direction normal to the sheet surfaces of the workpiece W1. At a first transportation sub-step, the heat storage member 5 and the workpiece W1 placed above the heat storage member 5 are transported from the heating device 14 to a lifting location while overlapping in the direction normal to the sheet surfaces of the workpiece W1. At a second transportation sub-step, the workpiece W1 placed above the heat storage member 5, when at the lifting location, is lifted upward by a transportation device 46 and transported to a pressing location on a press machine 20. At the pressing step, the workpiece W1 is processed by the press machine 20.
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公开(公告)号：US20200271247A1
公开(公告)日：2020-08-27
申请号：US16758244
申请日：2018-11-08
发明人： Hiroki FUJIMOTO , Masanori YASUYAMA , Yujiro TATSUMI , Tasuku ZENIYA , Hiroshi FUKUCHI , Yuki SUZUKI , Soshi FUJITA , Shintaro KOBAYASHI
IPC分类号： F16L9/17 , B32B15/01 , C22C38/38 , C22C38/32 , C22C38/28 , C22C38/02 , C22C38/06 , C22C38/00 , C21D9/08 , C21D6/00 , F16L13/02 , B21D35/00
摘要： This steel sheet includes a first coated portion in which an intermetallic compound layer and an aluminum coating layer are provided on a surface of a base steel sheet in order from the base steel sheet, the first exposed portion in which the base steel sheet is exposed, and a second coated portion in which the intermetallic compound layer and the aluminum coating layer are provided on the surface of the base steel sheet in order from the base steel sheet, in which in a first direction which is perpendicular to a thickness direction of the steel sheet and is directed from the first coated portion to one end edge of the steel sheet, the first coated portion, the first exposed portion, the second coated portion, and the end edge of the steel sheet are disposed in this order on at least one surface of the base steel sheet, and wherein at least the first coated portion, the first exposed portion, and the end edge of the steel sheet are disposed in this order on the other surface of the base steel sheet in the first direction.
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6.发明公开公开(公告)号：US20230356283A1
公开(公告)日：2023-11-09
申请号：US18042643
申请日：2021-08-23
发明人： Toshiya SUZUKI , Naruhiko NOMURA , Koichi HAMADA , Yujiro TATSUMI
CPC分类号： B21D43/105 , B21D22/208 , B25J15/106
摘要： A method of manufacturing a press-formed product includes: a heating step; a transportation step; and a pressing step. The transportation step includes: using claws of a pair of first arms to support the lower surface, at both ends, of a first heated workpiece and lift the workpiece; using claws of a pair of second arms to support the lower surface, at both ends, of a second heated workpiece and lift the workpiece; transporting the first heated workpiece with the lower surface supported, at both ends, by the claws of the pair of first arms and the second heated workpiece with the lower surface supported, at both ends, by the claws of the pair of second arms, where the first and second heated workpieces overlap each other in the direction normal to the sheet surfaces; driving the pair of first arms to lower the first heated workpiece to a pressing location on a press machine; and driving the pair of second arms to lower the second heated workpiece to a pressing location on the press machine.
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公开(公告)号：US20210262075A1
公开(公告)日：2021-08-26
申请号：US17253335
申请日：2019-06-21
发明人： Masanori YASUYAMA , Hiroki FUJIMOTO , Yujiro TATSUMI , Yuki SUZUKI , Hiroshi FUKUCHI , Shintaro KOBAYASHI
IPC分类号： C22C38/58 , C22C38/00 , C22C38/42 , C22C38/44 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/54 , B21D22/02 , B21D35/00 , C23C2/12 , C22C38/02 , B23K35/30
摘要： This steel sheet has a base steel sheet, a coated portion, and an exposed portion, the shape of the end edge side of the steel sheet and the end portion on the outer side of the base steel sheet is a protruded curve represented by a curvature radius R1 and R1 is 5 μm or more.
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公开(公告)号：US20210222804A1
公开(公告)日：2021-07-22
申请号：US17053662
申请日：2019-05-15
发明人： Hiroki FUJIMOTO , Masanori YASUYAMA , Yujiro TATSUMI , Hiroshi FUKUCHI , Shintaro KOBAYASHI , Soshi FUJITA , Tasuku ZENIYA , Yuki SUZUKI , Yoshinari ISHIDA
IPC分类号： F16L9/17 , B21D22/02 , C22C38/38 , C22C38/32 , C22C38/28 , C22C38/06 , C22C38/02 , C22C38/00 , B32B15/01 , C23C2/12 , C23C2/26 , C23C2/40 , F16L9/02 , F16L9/16 , B23K31/02
摘要： This steel sheet includes a first coated portion in which an intermetallic compound layer and an aluminum coating layer are provided on a surface of a base steel sheet in order from the base steel sheet side, a first exposed portion in which the base steel sheet is exposed, and a second coated portion in which the intermetallic compound layer and the aluminum coating layer are provided on the surface of the base steel sheet in order from the base steel sheet side, in which in a first direction which is perpendicular to a thickness direction of the steel sheet and is directed from the first coated portion to one end edge of the steel sheet, the first coated portion, the first exposed portion, the second coated portion, and the end edge of the steel sheet are disposed in this order on one surface of the base steel sheet, at least the first coated portion, the first exposed portion, and the end edge of the steel sheet are disposed in this order on the other surface of the base steel sheet in the first direction, and when viewing a cross section parallel to each of the first direction and the thickness direction of the steel sheet, the second coated portion is provided in a lower region which is located on the surface of the base steel sheet and on an inner side of the base steel sheet in the thickness direction of the steel sheet from a virtual line extending in the first direction from a boundary between the first exposed portion and the second coated portion.
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