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公开(公告)号：US10758959B2
公开(公告)日：2020-09-01
申请号：US15756668
申请日：2016-09-14
IPC分类号： B21D22/26 , B60J5/04 , B60J5/00 , B21D22/22 , B21D22/20 , B21D35/00 , B21D19/08 , B21D24/04 , B21D53/88
摘要： A manufacturing method includes a preparing step, an intermediate pressing step, a heating step, and a hot stamping step. In the preparing step, a blank is prepared. In the intermediate pressing step, press working is applied to the blank to produce an intermediate formed product. In the heating step, the intermediate formed product is heated. In the hot stamping step, press working is applied to the intermediate formed product to produce a panel-like formed product. In the hot stamping step, a machine including a first die, a second die, a punch, and a blank holder is used. While the intermediate formed product is pinched between the first die and the punch, the second die and the blank holder are moved relative to the first die and the punch, and thereby, the panel-like formed product is produced.
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公开(公告)号：US10695815B2
公开(公告)日：2020-06-30
申请号：US15575824
申请日：2016-05-10
发明人： Masahiro Saito , Yoshiaki Nakazawa , Kenichiro Otsuka , Yasuhiro Ito , Masanori Yasuyama , Masatoshi Tokunaga
摘要： A press-formed product is shaped by press-working from a tailored blank made up of a plurality of metal sheets butt-welded together. The press-formed product includes a flange section, and an arc-shaped area which is an area of the flange section which is formed by stretch flange deformation, and in which an inner peripheral edge is open. A weld line of the tailored blank intersects with the inner peripheral edge and an outer peripheral edge of the arc-shaped area. An angle θ formed by the weld line and a maximum principal strain direction of the stretch flange deformation is 17 to 84°.
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公开(公告)号：US10300952B2
公开(公告)日：2019-05-28
申请号：US15519034
申请日：2015-10-16
摘要： An impact absorbing member 10 able to secure absorption energy while lightening weight by absorbing the impact load applied in the axial direction by periodic buckling, wherein the impact absorbing member 10 is provided with a main body 20 comprised of metal sheet and having a polygonal shape in cross-section vertical to an axial direction and a center sheet 30 comprised of metal sheet and provided at a hollow part in the main body along the axial direction, the polygonal shape of the main body 20 includes a pair of long side (20a, 20b) facing each other, the center sheet 30 is joined to each of the long sides (20a, 20b) of the polygonal shape of the main body 20, and the sheet thickness t1 (mm) of the main body 20 and the sheet thickness t2 (mm) of the center sheet 30 satisfy 1.3×t1≤t2.
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公开(公告)号：US10265752B2
公开(公告)日：2019-04-23
申请号：US14913575
申请日：2014-09-10
摘要： In forming a press-formed product that is made of a high-tensile steel sheet having a tensile strength of 390 MPa or more, and has a substantially gutter-shaped cross section and an outward continuous flange, wrinkling in ridges and cracking in the outward continuous flange are reduced. A method for manufacturing a press-formed product that is made of a high-tensile steel sheet of 390 MPa or more, and has a substantially gutter-shaped cross section and an outward continuous flange in at least one end in a predetermined direction includes a first step in which, after a first pad restrains at least a part of a portion to be formed into a gutter bottom in a forming material, a second pad restrains at least a part of the end of portions to be formed into ridges and subsequently carries out press forming.
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公开(公告)号：US10030388B2
公开(公告)日：2018-07-24
申请号：US15034586
申请日：2014-11-25
摘要： A panel comprises a reinforcing unit including a plurality of first rectangular regions and a plurality of second rectangular regions. The first and second rectangular regions are in rows and columns, the first and second rectangular regions in each row being arranged alternately and the first and second rectangular regions in each column being arranged alternately. Each of the first rectangular regions includes a fully-covering first protrusion protruding in a first direction perpendicular to an imaginary reference plane and having a flat top surface. Each of the second rectangular regions includes a partially-covering second protrusion protruding in a second direction opposite to the first direction and having a flat top surface. A partially-covering reinforcing protrusion extends between opposite sides and protrudes in the first direction and having a flat top surface. The top surface of the reinforcing protrusion forms one face together with the top surface of the first protrusion.
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公开(公告)号：US09839951B2
公开(公告)日：2017-12-12
申请号：US14408175
申请日：2013-06-20
发明人： Ryuichi Nishimura , Kenichiro Otsuka , Yoshiaki Nakazawa , Yoshihiko Masuo , Toshiya Suzuki , Yoshiyuki Ikeda
摘要： A press-formed body (15) made of a high-tensile strength steel sheet of 390 MPa or more including a groove bottom part (15a), ridge line parts (15b, 15b) continuous to the groove bottom part (15a), and side wall parts (15c, 15c) continuous to the ridge line parts (15b, 15b), and in which an outward flange (16) is formed at an end part in a longitudinal direction is manufactured by a press-forming apparatus including a punch (11), a die (12), and a pad (14) which presses and binds a press-forming material (13) to the punch (11), thereby forming the press-formed body (15) without providing cutouts at a ridge line part flange portion of the outward flange, or generating lowering of material yield.
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公开(公告)号：US20150197206A1
公开(公告)日：2015-07-16
申请号：US14422244
申请日：2013-08-15
发明人： Kenji Tamura , Yoshiaki Nakazawa , Masahito Tasaka
CPC分类号： B60R19/18 , B60R19/023 , B60R19/34 , F16F7/12
摘要： Provided is a crash box having improved robustness, wherein an angle of the pair of corner portions is set to 90° or larger and 150° or smaller, an angle of the another pair of corner portions is set to 30° or larger and 90° or smaller, one or more inwardly convex trench portions extending in a longitudinal direction are provided, a cross-sectional peripheral length of the tubular body in the one end side is shorter than a cross-sectional peripheral length of the tubular body in the other end side, an aspect ratio between the longest one and the shortest one of diagonal lines of a polygon changes depending on a position on the axial direction of the tubular body, and overall sides on the cross section in the one end are formed in parallel to the opposite sides on the cross section in the other end.
摘要翻译： 提供一种具有改进的鲁棒性的碰撞盒，其中一对角部的角度设定为90°以上且150°以下，另一对角部的角度设定为30°以上且90° 或更小的一个或多个沿纵向方向延伸的向内凸的沟槽部分，所述管状体在一端侧的横截面周长短于另一端的管状体的横截面周长 在多边形中，最长的一条和最短的一条对角线之间的纵横比根据管状体的轴向位置而变化，并且一端的横截面上的整个侧面与 另一端的横截面的相对侧。
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公开(公告)号：US11358203B2
公开(公告)日：2022-06-14
申请号：US16088947
申请日：2017-04-03
摘要： A method for producing a press-formed product includes a first pressing step and a second pressing step. In the first pressing step, an intermediate formed product is formed from a processed material by using first press tooling. The intermediate formed product includes a stepped section of a top plate section, a temporary vertical wall section adjacent to the top plate section via a ridge section and having at least part of the shape of the vertical wall section, and a temporary flange section adjacent to the temporary vertical wall section via a temporary ridge section. In the second pressing step, the press-formed product is formed from the intermediate formed product. In the second pressing step, forming is performed such that the temporary ridge section is moved toward the temporary flange section with at least part of the top plate section of the intermediate formed product restricted.
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公开(公告)号：US11014139B2
公开(公告)日：2021-05-25
申请号：US15567571
申请日：2016-04-21
摘要： A process of pressing a blank to form an intermediate formed component configured including a top plate, the ridge lines at short direction ends of the top plate, and vertical walls facing each other in a state extending from the respective ridge lines and at least one of the vertical walls configuring a curved wall curving as viewed from an upper side of the top plate, such that a step projecting toward an opposite side to a side on which the vertical walls face each other is formed to the curved wall so as to run along a length direction of the top plate. The method includes pressing the intermediate formed component to narrow a projection width of the step, or to move a portion of the curved wall where the vertical walls face each other.
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公开(公告)号：US10898938B2
公开(公告)日：2021-01-26
申请号：US16084201
申请日：2017-03-16
IPC分类号： B21D22/26 , B21D24/04 , B21D24/00 , B21D22/20 , B21D22/02 , B21D22/22 , B21D53/88 , B60J5/04
摘要： This method for manufacturing a panel-like formed article has preparing a blank material made of a metal sheet having a tensile strength of 390 MPa or more and 980 MPa or less; and press-forming the blank material in a cold manner using a pressing apparatus to form the blank material into the panel-like formed article, in the press-forming, a blank holder, a first punch, and a second punch are relatively moved with respect to a die, thereby pressing the first punch and the second punch to the blank material, and pressing of the second punch to the blank material is completed before pressing of the first punch to the blank material.
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