WO2024097523A1 - Bordage et rabattage assistés thermiquement de pièces moulées en aluminium - Google Patents

Bordage et rabattage assistés thermiquement de pièces moulées en aluminium Download PDF

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Publication number
WO2024097523A1
WO2024097523A1 PCT/US2023/076918 US2023076918W WO2024097523A1 WO 2024097523 A1 WO2024097523 A1 WO 2024097523A1 US 2023076918 W US2023076918 W US 2023076918W WO 2024097523 A1 WO2024097523 A1 WO 2024097523A1
Authority
WO
WIPO (PCT)
Prior art keywords
article
heating element
edge
hemming
flanging
Prior art date
Application number
PCT/US2023/076918
Other languages
English (en)
Inventor
Vincent Millioto
Original Assignee
Martinrea International US Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US18/379,367 external-priority patent/US20240139791A1/en
Application filed by Martinrea International US Inc. filed Critical Martinrea International US Inc.
Publication of WO2024097523A1 publication Critical patent/WO2024097523A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/021—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors
    • B21D39/023—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors using rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/16—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
    • B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers
    • B21D19/043—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers for flanging edges of plates

Definitions

  • the present invention relates generally to forming techniques, assemblies and processes associated with aluminums castings. More specifically, the present invention teaches the selective application of heat to a casted aluminum article prior to bending, this achieving the benefits of reduced weight, cycle time, cost and complexity of the finished article.
  • US 9,896,050 teaches a die-cast battery tray configured as a high-pressure die cast component made from a lightweight metal.
  • the tray element is configured in one piece and has at least one fastening element, by which the battery is fastened to the tray element, with the result that additional fastening elements which are configured separately from the tray element for fastening the battery to the tray element can be avoided or can be kept low.
  • GB 1,063,427 teaches a two stage manufacture process for semi-finished steel sections formed by casting in a first stage (without heat) and deformed in a second stage with rollers to form desired comer radii.
  • US 5,799,718 teaches a preheating device for a metal casting channel however doesn’t appear to cover post formation (following initial casting or extrusion) heating of portions of the initially formed article to assist with further shaping.
  • US 8,181,498 discloses a method and technique for shaping a rim of an arched sheet metal although post application of heat doesn’t appear to be disclosed.
  • US 2008/0178968 and US 2008/0178973 both teach an aluminum alloy sheet such as for an automotive outer panel having excellent formability which allows flat hemming, showing no orange peel surfaces and ridging marks after forming and having excellent paint bake hardenability.
  • the present invention teaches a system and assembly for thermally assisting the flanging and hemming of a casted aluminum article in order to achieve the benefits of reduced weight, cycle time, cost and complexity of the finished article. Additionally, and by increasing the amount of heat added to the test piece, as well as an adaption of the applied forces when at a desired elevated temperature, it has been found that an aluminum cast sample can be hemmed over a mating piece. In this fashion, thermally assisted flanging and hemming aids in the reduction of weight, cost and complexity of automotive assemblies incorporating a cast aluminum architecture. BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is an illustration of an aluminum casting according to an embodiment of the present invention and utilizing thermally assisted flanging and hemming techniques for bending the aluminum casting to aid in the reduction of weight, cost and complexity of the cast aluminum architecture;
  • Fig. 2 is an enlarged section view taken from Fig. 1 and depicting a flanging or hemming operation for bending a heated edge section of the casting;
  • FIG. 3 is an illustration similar to Fig. 2 and depicting a final bent shape of the hemmed edge or flange of Fig. 2;
  • FIG. 4 is an illustration of a further concept example of a heating and bending operation for forming a flange edge to an aluminum casted article.
  • the present invention discloses a system and assembly for thermally assisting the flanging and hemming of a casted aluminum article, such as without limitation a battery tray or the like, in order to achieve the benefits of reduced weight, cycle time, cost and complexity of the finished article. Additionally, and by increasing the amount of heat added to the test piece, as well as an adaption of the applied forces when at a desired elevated temperature, it has been found that an aluminum cast sample can be hemmed over a mating piece. In this fashion, thermally assisted flanging and hemming aids in the reduction of weight, cost and complexity of automotive assemblies incorporating a cast aluminum architecture.
  • Figure 1 is an illustration, generally at 10, of an aluminum casting according to an embodiment of the present invention.
  • the casting can include without limitation a battery tray and which is bent or re-formed via a thermally assisted flanging and hemming techniques for bending the aluminum casting to aid in the reduction of weight, cost and complexity of the cast aluminum architecture.
  • this includes the placement of each of a holding pad 12 and a heating element 14 proximate an edge location 16 of the casting 10 in order to heat/ soften the flange edge 16 prior to bending the heated edge section.
  • the heating elements can be of any known type or construction and can include, without limitation, any of direct heating or indirect methods. In this fashion, the heated and formed or reformed edge can be accomplished according to tighter radii in comparison to that which is possible using cold forming or shaping techniques.
  • FIG. 3 an illustration similar to Fig. 2 is shown and depicting a final bent shape of the hemmed edge or flange of Fig. 2. This includes the placement of a suitable roller or flattening tool, this being represented at 18 and including a contact portion 20 for engaging and bending the heated edge location 16 shown in Fig. 2 until reformed into a final bent or folded profile as depicted at 16’.
  • a suitable roller or flattening tool this being represented at 18 and including a contact portion 20 for engaging and bending the heated edge location 16 shown in Fig. 2 until reformed into a final bent or folded profile as depicted at 16’.
  • FIG. 4 provides an illustration of a further concept example of a heating and bending operation for forming a flange edge to an aluminum casted article, with a folded location of the flange being shown at 22 and having a reverse folded edge 24, between which is sandwiched a separate plate 26.
  • the purpose of Fig. 4 is to additionally depict the ability to include any type of targeted placement of heating elements in relation to a given location of an aluminum casted article for the purpose of assisting in targeted bending, hemming, or flanging of the casting in order to provide for each of reduced weight, cost and part complexity over prior art techniques.
  • joinder references e.g., attached, affixed, coupled, connected, and the like
  • joinder references are only used to aid the reader's understanding of the present disclosure, and may not create limitations, particularly as to the position, orientation, or use of the systems and/or methods disclosed herein. Therefore, joinder references, if any, are to be construed broadly. Moreover, such joinder references do not necessarily infer that two elements are directly connected to each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

L'invention concerne un procédé et un ensemble pour border ou rabattre un bord d'un article moulé en aluminium, comprenant le positionnement de chacun parmi un élément chauffant et un tampon de maintien à proximité d'un bord d'extension de l'article moulé, le chauffage du bord de l'article moulé correspondant à la mise en place de l'élément chauffant, et puis l'application d'un rouleau ou d'un outil d'aplatissement ayant une partie de contact pour mettre en prise et cintrer le bord chauffé jusqu'à ce qu'il soit reformé en un profil cintré ou plié final. Des étapes supplémentaires comprennent le repositionnement de l'au moins un élément chauffant ou le positionnement d'au moins un élément chauffant supplémentaire à un emplacement supplémentaire de l'article moulé, après quoi une étape ultérieure d'ébavurage ou de fabrication finale est utilisée pour achever l'article.
PCT/US2023/076918 2022-10-31 2023-10-13 Bordage et rabattage assistés thermiquement de pièces moulées en aluminium WO2024097523A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US202263420770P 2022-10-31 2022-10-31
US63/420,770 2022-10-31
US18/379,367 US20240139791A1 (en) 2022-10-31 2023-10-12 Thermally assisted flanging and hemming of aluminum castings and extrusions as an enabler to lower cost and weight
US18/379,367 2023-10-12

Publications (1)

Publication Number Publication Date
WO2024097523A1 true WO2024097523A1 (fr) 2024-05-10

Family

ID=88757431

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2023/076918 WO2024097523A1 (fr) 2022-10-31 2023-10-13 Bordage et rabattage assistés thermiquement de pièces moulées en aluminium

Country Status (1)

Country Link
WO (1) WO2024097523A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1063427A (en) 1965-01-20 1967-03-30 Benteler Geb Paderwerk Continuous method for the two-stage manufacture of semi-finished steel sections
US5799718A (en) 1994-02-14 1998-09-01 Seva Device and frame for preheating a metal casting channel
KR20050000841A (ko) * 2003-06-25 2005-01-06 현대자동차주식회사 알루미늄-마그네슘-실리콘 합금판재의 헤밍방법
US20050284204A1 (en) * 2004-06-28 2005-12-29 Carsley John E Roller hemming apparatus and method
US20080178968A1 (en) 2001-03-28 2008-07-31 Sumitomo Light Metal Industries, Ltd. Aluminum alloy sheet with excellent formability and paint bake hardenability and method for production thereof
US8181498B2 (en) 2008-06-06 2012-05-22 Edag, Inc. Method and apparatus for shaping a rim of a three-dimensionally arched sheet metal
US20120214015A1 (en) * 2011-02-18 2012-08-23 GM Global Technology Operations LLC Hemmed Metal Panels, Hemming Apparatuses, and Hemming Methods
US9896050B2 (en) 2013-06-05 2018-02-20 Bayerische Mortoren Weke Aktiengesellschaft Tray element for a motor vehicle and arrangement of a battery on a tray element of this type
US20190076908A1 (en) * 2010-05-17 2019-03-14 Magna International Inc. Method and Apparatus for Forming Materials with Low Ductility

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1063427A (en) 1965-01-20 1967-03-30 Benteler Geb Paderwerk Continuous method for the two-stage manufacture of semi-finished steel sections
US5799718A (en) 1994-02-14 1998-09-01 Seva Device and frame for preheating a metal casting channel
US20080178968A1 (en) 2001-03-28 2008-07-31 Sumitomo Light Metal Industries, Ltd. Aluminum alloy sheet with excellent formability and paint bake hardenability and method for production thereof
US20080178973A1 (en) 2001-03-28 2008-07-31 Sumitomo Light Metal Industries, Ltd. Aluminum alloy sheet with excellent formability and paint bake hardenability and method for production thereof
KR20050000841A (ko) * 2003-06-25 2005-01-06 현대자동차주식회사 알루미늄-마그네슘-실리콘 합금판재의 헤밍방법
US20050284204A1 (en) * 2004-06-28 2005-12-29 Carsley John E Roller hemming apparatus and method
US8181498B2 (en) 2008-06-06 2012-05-22 Edag, Inc. Method and apparatus for shaping a rim of a three-dimensionally arched sheet metal
US20190076908A1 (en) * 2010-05-17 2019-03-14 Magna International Inc. Method and Apparatus for Forming Materials with Low Ductility
US20120214015A1 (en) * 2011-02-18 2012-08-23 GM Global Technology Operations LLC Hemmed Metal Panels, Hemming Apparatuses, and Hemming Methods
US9896050B2 (en) 2013-06-05 2018-02-20 Bayerische Mortoren Weke Aktiengesellschaft Tray element for a motor vehicle and arrangement of a battery on a tray element of this type

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