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公开(公告)号：EP3915694A1
公开(公告)日：2021-12-01
申请号：EP20746008.0
申请日：2020-01-24
摘要： A press forming method includes a first step of pinching one part of a metal sheet by means of a die and a pad, and a second step of moving a punch in a direction in which the punch approaches the die relatively to perform press forming on the metal sheet. The die has a first support surface which has an edge including a curved portion. The pad has a second support surface facing the first support surface of the die. The first support surface includes a first flat portion, and a first deformation portion which protrudes or is recessed with respect to the first flat portion. The second support surface includes a second flat portion which faces the first flat portion, and a second deformation portion which is recessed or protrudes with respect to the second flat portion so as to correspond to the first deformation portion. The first deformation portion is provided on a normal line of the curved portion as viewed from a pressing direction. When a space between the first deformation portion and the second deformation portion is assumed to be a deformation space, in the second step, press forming is performed so that portions of the metal sheet which are on both sides of the deformation space flow into the deformation space, and the metal sheet deforms along the first deformation portion and the second deformation portion in the deformation space.
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2.发明公开
公开(公告)号：EP4035789A1
公开(公告)日：2022-08-03
申请号：EP20868504.0
申请日：2020-09-23
发明人： KURODA, Ryo , TANAKA, Yasuharu , MIYAGI, Takashi , OGAWA, Misao
摘要： A method for manufacturing a press-formed article (100) includes a first step for forming a base sheet portion, a first rising portion, and a first strip portion from a sheet-shaped workpiece having a first edge portion and a second edge portion; and a second step for forming a second rising portion by causing a strip-shaped first zone including the second edge portion to be disposed between a first upper die and a first lower die from both sides, causing a second zone adjacent to the first zone to be disposed between a second upper die and a second lower die from both sides, and moving the first upper die and the first lower die relative to the second upper die and the second lower die, wherein, in the second step, a part of the second rising portion which is connected to a vertical ridge line (108) is shear-deformed.
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3.发明公开SPRINGBACK OCCURRENCE CAUSE IDENTIFYING METHOD, SPRINGBACK INFLUENCE DEGREE DISPLAY METHOD, SPRINGBACK OCCURRENCE CAUSE PORTION IDENTIFYING METHOD, SPRINGBACK MEASURE POSITION SPECIFYING METHOD, THEIR DEVICES, AND THEIR PROGRAMS 审中-公开原因识别程序对后悬架的情况下，后悬架的影响程度通知程序，会导致部分鉴定程序FOR后悬架的情况下，测量定位程序对后悬挂的设备和程序
公开(公告)号：EP2058062A1
公开(公告)日：2009-05-13
申请号：EP07806800.4
申请日：2007-08-30
发明人： YOSHIDA, Tohru , HIWATASHI, Shunji , DAIMARU, Seiichi , TANAKA, Yasuharu , ARIGA, Takashi , NIWA, Toshiyuki , KURIYAMA, Yukihisa , OKAYAMA, Satoru
CPC分类号： G06F17/5018 , G06F2217/16 , Y02T10/82
摘要： A method of identification of a cause of occurrence of springback comprising a press forming analysis step of numerically analyzing forming conditions of press forming to obtain forming data of a press formed part, a processing step of processing at least one of a physical property value and physical property quantity data of part of the regions of said press formed part among forming data of said press formed part, and a springback value calculation step of calculating a springback value based on the results of said processing.
摘要翻译： 回弹的发生，其包括一个冲压成形数值分析形成冲压成形，以获得冲压成形部件的成形数据的条件的分析步骤的原因的标识的方法，处理的处理步骤的物理性质值和物理中的至少一个 的所述压形成成形所述压成形部件的数据中的一部分的区域的部分属性量数据，以及基于所述处理的结果的回弹量的回弹量计算步骤。
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公开(公告)号：EP4227016A1
公开(公告)日：2023-08-16
申请号：EP21877763.9
申请日：2021-10-08
发明人： SUGAWARA, Minoru , YAMAMOTO, Takashi , TANAKA, Yasuharu , MIYAGI, Takashi , OGAWA, Misao , NATORI, Junki
摘要： A manufacturing method of a press-formed article (200) including: press-forming a metal sheet into a preformed article (100) including a preformed bottom sheet portion (110), a first preformed standing wall portion (120a), a second preformed standing wall portion (120b), a preformed ridge portion (130) provided between the first preformed standing wall portion (120a) and the second preformed standing wall portion (120b), and a swollen portion (140) provided between the preformed bottom sheet portion (110) and the first and second preformed standing wall portions (120a) and (120b); and press-forming the preformed article (100) into a press-formed article (200) including a bottom sheet portion (210), a first standing wall portion (220a) adjacent to the bottom sheet portion (210), a second standing wall portion (220b) adjacent to the bottom sheet portion (210), and a ridge portion (230) provided between the first standing wall portion (220a) and the second standing wall portion (220b).
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公开(公告)号：EP2896467B1
公开(公告)日：2020-08-19
申请号：EP13837955.7
申请日：2013-09-05
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公开(公告)号：EP4461430A1
公开(公告)日：2024-11-13
申请号：EP23752750.2
申请日：2023-02-01
摘要： This press-forming apparatus includes a punch, a die, and a blank holder, in which the punch has a top surface, a side surface, and a punch shoulder disposed between the top surface and the side surface, the punch shoulder has a punch shoulder straight portion extending with a radius of curvature of 500 mm or more and a punch shoulder curved portion extending with a radius of curvature of less than 500 mm, a portion adjacent to the punch shoulder curved portion in the top surface convexly protrudes toward an outside of the top surface, the top surface has a protrusion protruding in a pressing direction, the protrusion extends along an extension direction in which the punch shoulder straight portion extends, a bottom surface of a die hole of the die has a shape corresponding to the top surface, and the blank holder is disposed to face a sheet pressing surface of the die.
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7.发明公开
公开(公告)号：EP4035790A1
公开(公告)日：2022-08-03
申请号：EP20867603.1
申请日：2020-09-25
摘要： This structural member (W1) is manufactured using a structural member manufacturing device including: a first clamping part (10) having a first lower clamping member (11) and a second upper clamping member (12) disposed to face each other and capable of being opened and closed; a second clamping part (20) having a third lower clamping member (21) and a fourth upper clamping member (22) disposed to face each other corresponding to the first lower clamping member (11) and the second upper clamping member (12) and capable of being opened and closed; and clamping part driving means for allowing the first clamping part (10) and the second clamping part (20) to be relatively separated from each other while causing a position in an X-axis direction and a position in a Z-axis direction to correspond to each other. That is, the structural member (W1) is manufactured by a structural member manufacturing method in which the first clamping part (10) and the second clamping part (20) are relatively separated from each other by the clamping part driving means.
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公开(公告)号：EP3320996B1
公开(公告)日：2020-04-01
申请号：EP16821262.9
申请日：2016-06-27
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公开(公告)号：EP3524367A1
公开(公告)日：2019-08-14
申请号：EP17858499.1
申请日：2017-10-05
摘要： The manufacturing method includes a first step in which a pad holding state is established and a second step in which pad draw forming is performed after the first step is completed. In the pad holding state, (a) a part of a blank 15 to be formed into a top plate 21 is held between a pad 13 and a punch 11, and a part of the blank 15 to be formed into a flange 25 is held between a die 14 and a blank holder 12, (b) in a specific press directional cross section of a part of the blank 15 to be formed into a first part, the position of the contacting surface of the blank holder 12 that makes contact with the blank 15 in the direction of pressing is located toward the punch 11 in the direction of arrangement of the pad 13 and the punch 11, compared with the position of the contacting surface of the pad 13 that makes contact with the blank 15 in the direction of pressing, (c) a vertically-reversing cross-sectional angle is more than 0° and equal to or less than 80°, and (d) in a press directional cross section that is different from the specific press directional cross section, the position of the contacting surface of the pad 13 that makes contact with the blank 15 in the direction of the pressing is located toward the pad 13 in the direction of the arrangement, compared with the position of the contacting surface of the blank holder 12 that makes contact with the blank 15 in the direction of pressing.
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