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公开(公告)号：US12202025B2
公开(公告)日：2025-01-21
申请号：US18463094
申请日：2023-09-07
Applicant: NIPPON STEEL CORPORATION
Inventor： Yasuharu Tanaka , Misao Ogawa , Takashi Miyagi , Toshimitsu Aso , Hiroyuki Tanoue , Ryo Kuroda
Abstract: This press-formed article includes: a top sheet portion; a sidewall continuing to the top sheet portion via a convex ridge line portion; a flange continuing to the sidewall via a concaved ridge line portion; and an outward flange continuing from an edge portion of the top sheet portion to an edge portion of the flange, via an edge portion of the convex ridge line portion, an edge portion of the sidewall, and an edge portion of the concaved ridge line portion, wherein in the same unit, an average thickness TAve, a minimum thickness TMin, and a maximum thickness TMax of the outward flange satisfy Equation 1 and Equation 2. 0.8×TAve≤TMin
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公开(公告)号：US20240109114A1
公开(公告)日：2024-04-04
申请号：US18373317
申请日：2023-09-27
Applicant: HONDA MOTOR CO., LTD.
Inventor： Kenji Matsutani
Abstract: A press forming method includes a forming step of pressing an intermediate formed body including an intermediate ridge line portion with a large edge radius, into a target formed body. An upper die includes an upper die step portion at a boundary portion between a product portion and a discarded portion. The discarded portion of the intermediate formed body includes a separation portion which is spaced apart from the upper die at an initial stage of the forming step, to provide an elongation allowance for the discarded portion, and a first contact portion and a second contact portion which are brought into contact with the upper die at the initial stage of the forming step, to prevent occurrence of wrinkles.
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3.发明授权公开(公告)号：US11925968B2
公开(公告)日：2024-03-12
申请号：US17642842
申请日：2020-09-23
Applicant: NIPPON STEEL CORPORATION
Inventor： Ryo Kuroda , Yasuharu Tanaka , Takashi Miyagi , Misao Ogawa
IPC: B21D22/26 , B21D22/02 , B21D22/20 , B21D24/00 , B21D24/16 , B21D37/08 , B21D51/52 , B60K1/04 , H01M50/119
Abstract: 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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公开(公告)号：US11224908B2
公开(公告)日：2022-01-18
申请号：US15762824
申请日：2016-09-28
Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
Inventor： Takashi Yasutomi , Takashi Matsuno , Tohru Yoshida
IPC: B21D28/04 , B21D28/34 , B23K31/00 , B21D35/00 , B21D28/16 , B23D35/00 , B21D24/16 , B21D22/02 , B23D15/08
Abstract: A cutting method using a stamping press according to the present disclosure is a method to cut a workpiece that is configured from a first metal sheet and a second metal sheet joined at a weld portion and that has a heat-affected zone around the weld portion, in which the workpiece is cut using a punch. The punch includes a flat portion and a projecting portion projected more toward the workpiece than a flat portion of the punch. The workpiece is positioned with respect to the punch at a position such that the projecting portion starts cutting at least at one out of the heat-affected zone or the weld portion before the flat portion cuts the workpiece. The workpiece is then cut by moving the punch and a die relative to each other in this state of positioning so as to shear across the weld portion on the workpiece.
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公开(公告)号：US20200282441A1
公开(公告)日：2020-09-10
申请号：US16881772
申请日：2020-05-22
Applicant: TOYODA IRON WORKS CO., LTD.
Inventor： Kazuhiko Yokoi , Yasuhisa Sakashita
Abstract: A hot-stamped and trimmed part is produced by hot pressing a blank and then cutting off an excess outer peripheral portion by laser machining, an outer peripheral shape of the hot-stamped and trimmed part includes a laser trim line formed by cutting in the laser machining, and a press trim line formed by shearing in the hot pressing or pressing performed before the hot pressing, and the laser trim line and the press trim line are connected via a projecting corner portion.
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Patent Agency Ranking
公开(公告)号：US20200078846A1
公开(公告)日：2020-03-12
申请号：US16128587
申请日：2018-09-12
Applicant: Dajun Zhou , Changqing Du , Robert D. Miller
Inventor： Dajun Zhou , Changqing Du , Robert D. Miller
Abstract: A method of forming a finished stamped product includes positioning a blank on a blank holder between an upper die and a lower die, inserting a movable wedge block between the blank holder and the upper die to establish a first binder gap, and while the movable wedge block is inserted, performing a first strike of the blank by lowering the upper die a first distance to contact and partially form the blank, the movable wedge block limiting downward movement of the upper die relative to the lower die. After the first strike, withdrawing the movable wedge block to establish a second binder gap between the blank holder and the upper die, and while the movable wedge block is withdrawn, performing a second strike of the blank by lowering the upper die a second distance to finally form the blank into the finished product.
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公开(公告)号：US20190388948A1
公开(公告)日：2019-12-26
申请号：US16018506
申请日：2018-06-26
Applicant: Ford Global Technologies, LLC
Inventor： Raj Sohmshetty , Constantin Chiriac , Mikhail Minevich , Liang Huang
Abstract: A method of forming a hot stamped, die quenched, and die trimmed part is provided. The method includes hot stamping and die quenching a blank with a quench die and forming a die quenched panel. The quench die includes at least one slow-cooling channel. The die quenched panel is die trimmed along the at least one localized soft zone that is adjacent a hard zone. The blank may be formed from a press hardenable steel (PHS), and the at least one soft zone may have a ferritic microstructure and the at least one hard zone may have a martensitic microstructure. The at least one localized soft zone may have a microhardness between about 200 HV and about 250 HV and the hard zone may have a microhardness between about 400 HV and about 500 HV.
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公开(公告)号：US20190176205A1
公开(公告)日：2019-06-13
申请号：US16306760
申请日：2017-06-21
Applicant: Sandro Mizzon
Inventor： Sandro Mizzon
Abstract: A machine for forming metal stampings comprising an upper die holder on which an upper die half and an upper clamping yoke are mounted; a lower die holder on which a lower die half and a lower clamping yoke are mounted; handling means suitable to achieve the bringing together and moving apart of the upper die holder and the lower die holder; and an edge cutting/bending unit suitable to carry out both the cutting and bending of the edge and arranged between the two die halves and the two clamping yokes. The edge cutting/bending unit comprises a cutting blade suitable to cut the edge of a sheet to be formed; an outer bending blade arranged below said cutting blade and which forms a pushing step with it, facing in use towards said upper die half and said lower die half, and an inner bending blade arranged to slide along said outer bending blade.
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公开(公告)号：US09669447B2
公开(公告)日：2017-06-06
申请号：US13569525
申请日：2012-08-08
Applicant: Thomas Flehmig , Konstantinos Savvas
Inventor： Thomas Flehmig , Konstantinos Savvas
Abstract: The invention relates to a device for drawing components from a blank (1) made of metal using a drawing punch (2) and a die (3), the drawing punch (2) having a cutting edge (4) for trimming the blank (1) during the drawing procedure and a run-in contour (5) being provided in the die (3). The invention also relates to a method for drawing a blank using the device according to the invention and to a use according to the invention of the method. The run-in contour (5) of the die (3) is configured such that the cutting edge (4) and the run-in contour (5) are only in cutting engagement in certain regions in the drawing punch position at the start of the cutting procedure along the cutting line (7).
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公开(公告)号：US09242287B2
公开(公告)日：2016-01-26
申请号：US14048631
申请日：2013-10-08
Applicant: Xiangfan Fang
Inventor： Xiangfan Fang
CPC classification number: B21D28/24 , B21D24/16 , B21D37/16 , B29C51/082 , B29C51/262 , B29C51/32 , B29C51/428 , C21D1/673
Abstract: The invention relates to a hot forming tool for hot forming a metal workpiece, having at least two dies which may be moved relative to one another for forming the workpiece, and having a cooling device by means of which the workpiece may be cooled in the hot forming tool from a first, higher temperature to a second, lower temperature. To improve the hot forming tool, it is provided that the hot forming tool is equipped with a separating device by means of which a separating operation may be carried out on a workpiece present in the hot forming tool. The invention further relates to a method for hot forming.
Abstract translation: 本发明涉及一种用于热成型金属工件的热成形工具，其具有至少两个可相对于彼此移动的模具以形成工件，并具有冷却装置，通过该冷却装置可将工件冷却至热 成型工具从第一个更高的温度到第二个较低的温度。 为了改善热成形工具，提供了热成形工具配备有分离装置，通过该分离装置可以在存在于热成形工具中的工件上进行分离操作。 本发明还涉及一种热成型方法。
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