公开(公告)号：US10357815B2

公开(公告)日：2019-07-23

申请号：US14791305

申请日：2015-07-03

Applicant: HONDA MOTOR CO., LTD.

Inventor： Syohei Okuzumi ,  Koji Fujita

IPC: B21D22/20

Abstract: A press drawing method includes a first step for moving an upper mold 10e from a top dead center to a fracture position and applying a predetermined strain to a part of a plate material 1 to be drawn, causing the plate material 1 to fracture at a fracture part 4, and a second step for moving the upper mold 10e from the fracture position to a bottom dead center, thus completing the drawing process.

公开(公告)号：US20190176894A1

公开(公告)日：2019-06-13

申请号：US16206049

申请日：2018-11-30

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Yasuhiro ITO ,  Yoshiaki NAKAZAWA

IPC: B62D25/02 ,  B21D53/88 ,  B21D22/02 ,  B21D22/20 ,  B21D22/26

Abstract: [Object] Provided is a press-molded product capable of improving the bonding strength between a vehicle body reinforcing member and the other member or the rigidity of a vehicle body by enlarging a cross-section of a member to a fullest extent of a design cross-section without forming a notch for preventing a press-molding failure in a ridge-portion flange.[Solution] A press-molded product is formed by a steel plate having a tensile strength of 340 MPa or more, and includes an inward continuous flange in at least one end portion in a predetermined direction, the inward continuous flange being obtained by continuously forming a ridge-portion flange formed inward in the end portion of the ridge portion, a first flange formed inward in at least a part of an area of the end portion of a first surface portion, and a second flange formed inward in at least a part of an area of the end portion of a second surface portion.

公开(公告)号：US10316381B2

公开(公告)日：2019-06-11

申请号：US14094003

申请日：2013-12-02

Applicant: JFE STEEL CORPORATION

Inventor： Hiroki Nakamaru ,  Seiji Nakajima ,  Tatsuya Miyoshi ,  Hiroyuki Masuoka ,  Shinji Ootsuka

IPC: C21D8/02 ,  C23C2/28 ,  B32B15/01 ,  B32B15/04 ,  C23C2/06 ,  B32B15/18 ,  C25D3/56 ,  B21D22/20 ,  C21D8/00 ,  B21D22/00 ,  C22C18/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/32 ,  C22C38/60 ,  C23C10/28 ,  C25D5/48 ,  C25D5/50 ,  C21D1/673 ,  C23C2/26 ,  C23C10/60 ,  C23C26/00 ,  C23C28/00 ,  C22C38/00 ,  C22C38/14 ,  C22C38/28 ,  C22C38/34 ,  C22C38/38 ,  C23C30/00 ,  C21D8/04

Abstract: A method is provided for producing a hot-pressed member including heating a Ni-based coated steel sheet, which includes, on a surface thereof, a Zn—Ni alloy coating layer containing 13% by mass or more of Ni, in a temperature region of an Ac3 transformation point to 1200° C.; and then hot-pressing the steel sheet.

公开(公告)号：US10307878B2

公开(公告)日：2019-06-04

申请号：US14148007

申请日：2014-01-06

Applicant: Bayerische Motoren Werke Aktiengesellschaft

Inventor： Thomas Herzinger ,  Johann van Niekerk

IPC: B23K31/02 ,  B23Q17/24 ,  B23K9/20 ,  B21D22/20 ,  B21D53/88 ,  B23K11/00 ,  B23K101/00

Abstract: A method produces a component, particularly a body component for a vehicle, or a component composite consisting of several components. The steps include forming a metal plate in a forming tool, particularly in a deep-drawing die, producing a reference marking at a predefined location of the metal plate, rough positioning of the formed metal plate by a positioning device such that the reference marking is situated in a predefined space area, identifying the reference marking of a position recognition device, such as a camera system, the position recognition device generating position data corresponding to the position of the reference marking, positioning of a first fixing element at the location of the reference marking based on the position data by an electronically controlled positioning device, and connecting the first fixing element with the formed metal plate, particularly by welding.

公开(公告)号：US10252311B2

公开(公告)日：2019-04-09

申请号：US15244350

申请日：2016-08-23

Applicant: Bayerische Motoren Werke Aktiengesellschaft

Inventor： Joerg Grimm ,  Matthias Hahnel ,  Jochen Lietz ,  Christian Mueller ,  Horst Reuss ,  Lutz Sagner ,  Thomas Schrumpf ,  Richard Schwimmbeck ,  Ernst Heinl

IPC: B21D22/20 ,  B21D22/02 ,  B21D37/16

Abstract: A forming tool for shaping a workpiece, in particular a flat metal sheet, includes a female die, a blank holder, and a male die, all of which are movable relative to one another. The female die, the blank holder and/or the male die may be temperature-controlled in at least some portions thereof.

公开(公告)号：US20190091752A1

公开(公告)日：2019-03-28

申请号：US16115161

申请日：2018-08-28

Applicant: Topre Corporation

Inventor： Hiroaki Takishima

IPC: B21D28/34 ,  B21D35/00 ,  B21D22/20 ,  B21D28/26 ,  B21D37/10

Abstract: A method for manufacturing a hot pressed product by heating a sheet material and quenching the sheet material while molding the sheet material includes a hole forming step of forming a pilot hole in the sheet material; a heating step of heating the sheet material in which the pilot hole is formed; and a molding step of forming a burred portion at the pilot hole by using a burring punch included in a die set while molding the sheet material in the die set. The pilot hole has an opening shape in which convex portions and concave portions are alternately arranged. A diameter of a circumscribed circle that is in contact with the convex portions is greater than a punch diameter of the burring punch. A diameter of an inscribed circle that is in contact with the concave portions is less than the punch diameter of the burring punch.

公开(公告)号：US20190070652A1

公开(公告)日：2019-03-07

申请号：US16183969

申请日：2018-11-08

Applicant: Bayerische Motoren Werke Aktiengesellschaft

Inventor： Jan Andreas PFRANG

IPC: B21D22/02 ,  B21D22/20 ,  B21D35/00 ,  C22F1/04

Abstract: A method for manufacturing a component from a hardenable aluminum alloy includes the steps of: heating a blank to a predefined temperature; shaping the heated blank into a semifinished product in a shaping tool; cooling the semifinished product during or following the shaping process; and shaping the cooled semifinished product into a component in a second shaping tool.

公开(公告)号：US20190054515A1

公开(公告)日：2019-02-21

申请号：US16079555

申请日：2017-03-02

Applicant: Nisshin Steel Co. Ltd.

Inventor： Naofumi NAKAMURA ,  Yudai YAMAMOTO

IPC: B21D22/28 ,  B21D22/30 ,  B21D22/20

Abstract: An object of the present invention is to provide a method for manufacturing a molded member, which can maintain high accuracy circularity of an inner diameter of a tubular body even if a thickness of a base metal sheet varies and which can prevent occurrence of adhesion, seizure of the like of the base metal sheet to a die used for finishing ironing. The base metal sheet is subjected to multi-stage drawing to manufacture the molded member including a tubular body and a flange formed at an end portion of the body. The multi-stage drawing includes: preliminary drawing for forming a preliminary body having a body element from the base metal sheet; at least one compression drawing performed after the preliminary drawing and forming the body by drawing the body element while applying a compressive force to the body element; and at least one finishing ironing performed after the at least one compression drawing to ensure dimensional accuracy.

公开(公告)号：US10196090B2

公开(公告)日：2019-02-05

申请号：US14911557

申请日：2014-08-06

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Yasuhiro Ito ,  Yoshiaki Nakazawa

IPC: B62D25/02 ,  B21D22/02 ,  B21D22/20 ,  B21D22/26 ,  B21D53/88

Abstract: Provided is a press-molded product capable of improving the bonding strength between a vehicle body reinforcing member and the other member or the rigidity of a vehicle body by enlarging a cross-section of a member to a fullest extent of a design cross-section without forming a notch for preventing a press-molding failure in a ridge-portion flange.A press-molded product is formed by a steel plate having a tensile strength of 340 MPa or more, and includes an inward continuous flange in at least one end portion in a predetermined direction, the inward continuous flange being obtained by continuously forming a ridge-portion flange formed inward in the end portion of the ridge portion, a first flange formed inward in at least a part of an area of the end portion of a first surface portion, and a second flange formed inward in at least a part of an area of the end portion of a second surface portion.

公开(公告)号：US20190009367A1

公开(公告)日：2019-01-10

申请号：US16014439

申请日：2018-06-21

Applicant: TOA Industries Co., Ltd.

Inventor： Yasutaka SUZUKI ,  Tadashi IWANUMA ,  Ken-ichiro MORI ,  Yuki NAKAGAWA

IPC: B23K26/32 ,  B21D22/20 ,  B21D35/00 ,  B62D25/04 ,  B62D29/00

Abstract: The invention provides manufacturing a partially reinforced press formed product with high corrosion resistance and antirust property without grain boundary cracks due to spot welding. First and second galvanized steel plates are heated to an austenite range temperature to transform the bodies of the first and second galvanized steel plates into austenite and form a zinc oxide film and a Fe—Zn solid solution phase on the surfaces of the first and second galvanized steel plates. Hot press forming is then performed to the first and second galvanized steel plates which are heated in the process mentioned above, the first and second galvanized steel plates being superposed. The first and second galvanized steel plates, which are hot press formed, are then welded.