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公开(公告)号：US12214399B2
公开(公告)日：2025-02-04
申请号：US17611854
申请日：2020-02-14
Applicant: JFE STEEL CORPORATION
Inventor： Hiroto Miyake , Toyohisa Shinmiya , Yuji Yamasaki
Abstract: Warpage or torsion in a longitudinal direction is suppressed when an elongated curved component is manufactured by press forming. A method for manufacturing a pressed component includes a first step of press forming a metal sheet in a desired component shape using a first die, and a second step of press forming a formed product using a second die after the first step. In the second step, a cross section of a bent part and a vertical wall part are controlled to be opened depending on warpage at longitudinal end portions of the component by elastic recovery due to release from the first die, thereby suppressing the warpage.
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公开(公告)号：US20240066581A1
公开(公告)日：2024-02-29
申请号：US18269319
申请日：2021-08-05
Applicant: JFE STEEL CORPORATION
Inventor： Yusuke FUJII
Abstract: A press forming method for suppressing wall camber of a side wall portion due to springback of a press-formed product including a top portion, the side wall portion and a flange portion includes: a first forming step of press-forming a preformed part including a flange portion having height continuously changed in an axial direction to have a concave shape, a convex shape or a concavo-convex shape more largely than a target shape of the press-formed product in a height direction to provide a height difference; and a second forming step of press-forming the preformed part into the press-formed product having the target shape to reduce the height difference of the flange portion of the preformed part.
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公开(公告)号：US20230302519A1
公开(公告)日：2023-09-28
申请号：US18173809
申请日：2023-02-24
Applicant: HONDA MOTOR CO., LTD.
Inventor： Sen TAO , Hikaru SUZUKI , Makoto TSUCHIYA
Abstract: Provided is a press-forming method including three steps for preventing spring-back in a hat-shaped cross section shape of a final formed article. In the first step, from a blank, a preformed article in a first form is obtained, the preformed article including a top surface, left and right vertical walls, and left and right tapered portions extending outward from lower ends of the left and right vertical walls, respectively, of a final formed article having a hat-shaped cross section. In the second step, the compression can be applied to the entirety of the top surface, the left and right vertical walls, and the left and right flanges of the final formed article having the hat-shaped cross section, whereby the spring-back can be sufficiently prevented. In the third step, obtain the final formed article having the hat-shaped cross section.
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公开(公告)号：US20230087377A1
公开(公告)日：2023-03-23
申请号：US17798771
申请日：2020-10-02
Applicant: JFE STEEL CORPORATION
Inventor： Yusuke FUJII , Masaki URABE , Shunsuke TOBITA
Abstract: A shape change prediction method for a press formed part for predicting a shape change of the press formed part with a lapse of time units after springback at a moment of a release from a die includes: a shape/residual stress immediately after springback acquisition step of acquiring a shape and a residual stress of the press formed part immediately after the springback by a springback analysis of the press formed part; a residual stress relaxation/reduction setting step of setting a value of a residual stress relaxed and reduced from the acquired residual stress to the press formed part immediately after the springback; and a shape analysis step of determining a shape, in which moments of force are balanced, for the press formed part to which the value of the relaxed and reduced residual stress is set.
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公开(公告)号：US10946432B2
公开(公告)日：2021-03-16
申请号：US15825154
申请日：2017-11-29
Applicant: Alfons Haar, Inc.
Inventor： Stephen B. Turner , Shawn P. Finley
Abstract: A method and apparatus for forming a can end in a forming press including positioning a sheet of material between an upper punch assembly and a fixed base assembly; cutting a can end blank from the sheet of material; clamping a peripheral portion of the can end blank; moving the upper punch assembly to clamp a central portion of the can end blank between an upper panel punch and a lower panel punch to define a central panel section positioned below an annular inner bead die located adjacent to the lower panel punch on the fixed base assembly; and extending the upper punch assembly to form an initial annular countersink radius next to the peripheral portion of the can end blank, with a substantially undeformed intermediate area extending between the initial annular countersink radius and the annular inner bead die.
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Patent Agency Ranking
公开(公告)号：US10471493B2
公开(公告)日：2019-11-12
申请号：US15781651
申请日：2016-12-07
Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
Inventor： Toshiya Suzuki , Yoshiaki Nakazawa , Masahiro Nakata
IPC: B21D22/20 , B21D22/26 , B21D53/88 , B21D24/06 , B21D47/01 , B21D5/01 , B21D22/24 , B21D24/04 , B21D24/16
Abstract: Disclosed is a method to manufacture a pressed component from an intermediate stock, which includes two bent portions with a spacing thereof narrower than a width of a top plate of the pressed component, by employing a press including a die having a die pad and a punch having an inner pad, the method including: gripping a portion between the bent portions with the inner pad and the die pad in a state in which the inner pad projects from the punch and the die pad projects from the die; moving the die toward the punch side to form vertical walls of the pressed component with the die and the punch; and integrating the die and the die pad and then moving the die, the die pad and the inner pad toward the punch side to form the top plate.
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公开(公告)号：US20190176204A1
公开(公告)日：2019-06-13
申请号：US15781651
申请日：2016-12-07
Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
Inventor： Toshiya SUZUKI , Yoshiaki NAKAZAWA , Masahiro NAKATA
Abstract: Disclosed is a method to manufacture a pressed component from an intermediate stock, which includes two bent portions with a spacing thereof narrower than a width of a top plate of the pressed component, by employing a press including a die having a die pad and a punch having an inner pad, the method including: gripping a portion between the bent portions with the inner pad and the die pad in a state in which the inner pad projects from the punch and the die pad projects from the die; moving the die toward the punch side to form vertical walls of the pressed component with the die and the punch; and integrating the die and the die pad and then moving the die, the die pad and the inner pad toward the punch side to form the top plate.
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公开(公告)号：US09707617B2
公开(公告)日：2017-07-18
申请号：US14425552
申请日：2013-11-07
Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
Inventor： Mitsuharu Yamagata , Shuji Yamamoto , Yasuhiro Wada
CPC classification number: B21J5/025 , B21D22/22 , B21D22/24 , B21D22/26 , B21D53/28 , B21J5/08 , B21J13/02 , B21K23/00
Abstract: While a compression part (B1) in a bottom wall part of a cup-shaped workpiece (B) is compressed by an inner punch (11) and an inner die (14) and moved in a direction to get away from an intermediate die (15), the inner die (14) is pushed toward the inner punch (11); and a compression part (B2) being an outer end portion in a radial direction of the workpiece (B) is compressed by an outer punch (13) and an outer die (16) and moved in an direction to approach the intermediate die (15), to thereby suppress the workpiece (B) in the compression part (B2) from material-flowing in a direction to get away from a central axis (10), whereby thickness reduction processing of the compression part (B1) and thickness increase processing of a vertical wall part (B3) of the workpiece (B) sandwiched by an intermediate punch (12) and the inner die (15) and a vertical wall part (B4) of the workpiece (B) sandwiched by the intermediate punch (12) and an outer die (16) are performed.
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公开(公告)号：US09566634B2
公开(公告)日：2017-02-14
申请号：US12795434
申请日：2010-06-07
Applicant: Michael R. Gogola , Randall G. Forrest
Inventor： Michael R. Gogola , Randall G. Forrest
CPC classification number: B65D17/4012 , B21D22/24 , B21D51/383 , B21D51/44 , B65D2517/0014 , B65D2517/0062
Abstract: A can end for a two-piece beverage container has a curl positioned about a longitudinal axis which defines an outer perimeter of the can end. A circumferential wall angles downwardly and radially inwardly relative to a radially inner portion of the curl. A strengthening member extends radially inwardly relative to the circumferential wall. A center panel extends radially outwardly from the longitudinal axis towards the strengthening member and has a diameter greater than 87.7% of an overall diameter of the can end. A frangible score and a hinge portion define an openable tear panel in the center panel. A stay-on tab is attached to the center panel and has a nose portion overlying the tear panel opposite a lift end of the tab.
Abstract translation: 用于两件式饮料容器的罐端部具有围绕限定罐端部的外周边的纵向轴线定位的卷曲。 圆周壁相对于卷曲的径向内部部分向下并径向向内倾斜。 加强构件相对于周向壁径向向内延伸。 中心面板从纵向轴向径向向外朝向加强构件延伸，并且具有大于罐端部总直径的87.7％的直径。 易碎分数和铰链部分在中心面板中限定可打开的撕裂面板。 一个固定翼片连接到中央面板上，并且具有一个鼻部，该鼻部覆盖在与突片的升降端相对的撕裂板上。
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公开(公告)号：US09555459B2
公开(公告)日：2017-01-31
申请号：US14511938
申请日：2014-10-10
Applicant: CROWN Packaging Technology, Inc.
Inventor： Stuart Monro , Alain Presset , Jonathan Riley , Keith Vincent
IPC: B21D22/24 , B21D22/28 , B21D25/04 , B21D22/20 , B21D22/22 , B21D25/00 , B21D51/26 , B65D8/00 , B21D51/10
CPC classification number: B21D25/04 , B21D22/20 , B21D22/22 , B21D25/00 , B21D51/10 , B21D51/26 , B65D15/22
Abstract: A method and apparatus are disclosed which are suitable for use in the manufacture of two-piece metal containers. In particular, a way of making cups from metal sheet is disclosed using a combination of stretching and drawing operations. The resulting cups have the advantage of having a base thickness that is thinner relative to the ingoing gauge of the metal sheet.
Abstract translation: 公开了适用于制造两件式金属容器的方法和装置。 特别地，使用拉伸和拉伸操作的组合来公开从金属板制造杯子的方式。 所得到的杯具有相对于金属板的导入量规更薄的基底厚度的优点。
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