EP0020829A1 - Fabrication de panneaux portants - Google Patents

Fabrication de panneaux portants Download PDF

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Publication number
EP0020829A1
EP0020829A1 EP79301192A EP79301192A EP0020829A1 EP 0020829 A1 EP0020829 A1 EP 0020829A1 EP 79301192 A EP79301192 A EP 79301192A EP 79301192 A EP79301192 A EP 79301192A EP 0020829 A1 EP0020829 A1 EP 0020829A1
Authority
EP
European Patent Office
Prior art keywords
sheet
domed
punches
projections
dies
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP79301192A
Other languages
German (de)
English (en)
Other versions
EP0020829B1 (fr
Inventor
Richard Joseph Johnson
Donald Lamont Tate
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tate Architectural Products Inc
Original Assignee
Tate Architectural Products 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8186388&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0020829(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Tate Architectural Products Inc filed Critical Tate Architectural Products Inc
Priority to DE7979301192T priority Critical patent/DE2966156D1/de
Priority to EP79301192A priority patent/EP0020829B1/fr
Priority to AT79301192T priority patent/ATE4654T1/de
Publication of EP0020829A1 publication Critical patent/EP0020829A1/fr
Application granted granted Critical
Publication of EP0020829B1 publication Critical patent/EP0020829B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/08—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of metal, e.g. sheet metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/32—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material
    • E04C2/326—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material with corrugations, incisions or reliefs in more than one direction of the element

Definitions

  • This invention relates to load bearing panels of the kind used to make up so-called access flooring in which the panels are supported by their corners on pedestals or by their edges on a grid of stringers (or on an array of pedestal supports) so as to form a level load bearing surface from which each or at least some of the panels may be removed for access to electric or telephone wiring, air ducts, water pipes and other services that may be installed beneath the floor level.
  • load bearing panels will be referred to hereinafter as "panels of the kind described”.
  • Lightweight, rigid panels are made by reinforcing a flat top plate - which forms the floor surface - with a stiffening web. Problems are encountered in the production of lightweight panels of adequate rigidity to resist flexure under heavy static or moving loads and which are not excessively thick so as to restrict the service space beneath or necessitate an overall increase in building height.
  • the invention comprises a method for load bearing panels of the kind described, in which a flat sheet of material is given a plurality of projections to make it more rigid, characterised in that the flat sheet is deformed by cold die forming using a female die part comprising an arrangement of circular or nearly circular dies and a male die part comprising a corresponding arrangement of domed punches and pressing the sheet material into the dies by the punches so as to form domed projections in said sheet, the arrangement of the dies and punches being such that no straight line can be drawn across the female die part that does not intersect one or more of said circular or nearly circular dies.
  • the flat sheet is preferred to be deformed so as to have a peripheral flange simultaneously with the formation of the domed projections. Forming of the peripheral flange simultaneously will restrict material flow to cause uniform stretching similar to that provided by extreme hold-down on the periphery as opposed to drawing, which would utilize additional material and substantially deform the perimeter, requiring an additional operation to prepare the part for further use.
  • the corners of the flat sheet are notched so that the sheet brings together the edges of the notch to form a box corner.
  • a preferred feature of the method according to the invention is that the material is not bottomed in the circular or nearly circular dies.
  • the die itself can be a very simple structure comprising circular throughways in a plate, the throughways having hardened radiused lips on which the material is stretched by the action of the punches.
  • the domed projections are formed with punches having a blunt nose having a first radius of curvature, a main dome section having a second, smaller radius of curvature and a third section smoothly joining said main dome section to a cylindrical base.
  • a flat top sheet is secured to the stiffening web by welding the top sheet to the domed projections - and also, of course, wherever else may be required, as, for example, to the flanged edges.
  • the top sheet is preferably made from full hard steel having a yield strength of approximately 100,000 psi.
  • the panel is trimmed to size and for such trimming the panel is located in a four-sided guillotine by using balls engaged in the hollows formed by the domed projections or the peripheral flange.
  • the panel issquare - other shapes, however, such as oblong or"triangular or hexagonal are not excluded.
  • Figure 1 illustrates a blank from which a stiffening web will be produced.
  • the blank comprises a square sheet 10 of draw quality steel having a yield strength approximately in the range of 1700 Kg/sq.cm. to 1900 Kg/sq.cm.
  • the corners 11 of the sheet lO are notched so that when the margins are drawn out and bent to form a peripheral flange the notches 11 will be elongated and narrowed and their edges 12 brought together to form a box corner.
  • the central portion 13 of one side of the sheet 10 is lubricated.
  • FIGs 2 and 3 illustrate a formed stiffening web 14 made from the blank illustrated in Figure 1.
  • the web 14 has a central portion with domed projections 15 surrounded by a flange 16.
  • the tops 17 of the domed projections 15 are all level, and level with the lip 18 of the flange 16.
  • the arrangement of the throughways 23 is very important from the point of view of the rigidity of the finished product. It is desired that there shall be no clear "line of sight" across the dies, and it is specified in fact that no straight line can be drawn across the female die part that does not intersect at least one or more of the dies.
  • Figure 11 shows a load bearing panel of the kind described having a top plane 38' that in use forms the load bearing surface of floor when laid in an array with like panels.
  • the stiffening web 39 produced as heretofore described is welded to the top_plate 38' by electric resistance welding that welds the tops of the domed projections 15 to the top plate 38'. Spot welds are also effected around the perimeter 41.
  • the panel After welding, the panel is trimmed to size.
  • the arrangement of projections 15 has 90° rotational symmetry. By engaging four locating balls (not shown) into four centrally disposed hollows (see Figure 2) or by locating from the peripheral flange, the panel can be located for the edge trimming operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
EP79301192A 1979-06-20 1979-06-20 Fabrication de panneaux portants Expired EP0020829B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE7979301192T DE2966156D1 (en) 1979-06-20 1979-06-20 Production of load bearing panels
EP79301192A EP0020829B1 (fr) 1979-06-20 1979-06-20 Fabrication de panneaux portants
AT79301192T ATE4654T1 (de) 1979-06-20 1979-06-20 Herstellung von tragenden platten.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP79301192A EP0020829B1 (fr) 1979-06-20 1979-06-20 Fabrication de panneaux portants

Publications (2)

Publication Number Publication Date
EP0020829A1 true EP0020829A1 (fr) 1981-01-07
EP0020829B1 EP0020829B1 (fr) 1983-09-14

Family

ID=8186388

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79301192A Expired EP0020829B1 (fr) 1979-06-20 1979-06-20 Fabrication de panneaux portants

Country Status (3)

Country Link
EP (1) EP0020829B1 (fr)
AT (1) ATE4654T1 (fr)
DE (1) DE2966156D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2603930A1 (fr) * 1986-09-11 1988-03-18 Donn Inc Panneau de plancher sureleve et son procede de fabrication
GB2279596A (en) * 1993-07-02 1995-01-11 Cyril Sloggett Plastic strain hardened sheet material and a method of forming such material
US7992418B1 (en) 2007-11-13 2011-08-09 Hadley Industries Overseas Holdings Limited Sheet material
CN102773322A (zh) * 2012-07-27 2012-11-14 东莞精锐电器五金有限公司 蜂窝金属板加工方法及加工装置
CN109386720A (zh) * 2018-10-29 2019-02-26 徐卫海 一种采用压边焊接的曲面薄板金属外壳及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1103550B (de) * 1951-03-20 1961-03-30 Erben Des Verstorbenen Dr Ing Plattenfoermiges Bauelement mit kuppel-foermigen Ausbuchtungen, aus derartigen Elementen hergestellter Schichtkoerper und Verfahren zum Herstellen des Schichtkoerpers
US3196763A (en) * 1960-10-05 1965-07-27 Washington Aluminum Company In Panel structure
BE683142A (fr) * 1966-06-24 1966-12-27
US3525663A (en) * 1967-03-09 1970-08-25 Jesse R Hale Anticlastic cellular core structure having biaxial rectilinear truss patterns
US4077247A (en) * 1975-09-30 1978-03-07 United Technologies Corporation Method and apparatus for improving the formability of sheet metal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1103550B (de) * 1951-03-20 1961-03-30 Erben Des Verstorbenen Dr Ing Plattenfoermiges Bauelement mit kuppel-foermigen Ausbuchtungen, aus derartigen Elementen hergestellter Schichtkoerper und Verfahren zum Herstellen des Schichtkoerpers
US3196763A (en) * 1960-10-05 1965-07-27 Washington Aluminum Company In Panel structure
BE683142A (fr) * 1966-06-24 1966-12-27
US3525663A (en) * 1967-03-09 1970-08-25 Jesse R Hale Anticlastic cellular core structure having biaxial rectilinear truss patterns
US4077247A (en) * 1975-09-30 1978-03-07 United Technologies Corporation Method and apparatus for improving the formability of sheet metal

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2603930A1 (fr) * 1986-09-11 1988-03-18 Donn Inc Panneau de plancher sureleve et son procede de fabrication
GB2279596A (en) * 1993-07-02 1995-01-11 Cyril Sloggett Plastic strain hardened sheet material and a method of forming such material
GB2279596B (en) * 1993-07-02 1997-03-26 Cyril Sloggett Plastic strain hardened sheet material and a method of forming such material
US7992418B1 (en) 2007-11-13 2011-08-09 Hadley Industries Overseas Holdings Limited Sheet material
US9138796B2 (en) 2007-11-13 2015-09-22 Hadley Industries Overseas Holdings Limited Sheet material
CN102773322A (zh) * 2012-07-27 2012-11-14 东莞精锐电器五金有限公司 蜂窝金属板加工方法及加工装置
CN102773322B (zh) * 2012-07-27 2015-03-11 东莞精锐电器五金有限公司 蜂窝金属板加工方法及加工装置
CN109386720A (zh) * 2018-10-29 2019-02-26 徐卫海 一种采用压边焊接的曲面薄板金属外壳及其制备方法

Also Published As

Publication number Publication date
DE2966156D1 (en) 1983-10-20
ATE4654T1 (de) 1983-09-15
EP0020829B1 (fr) 1983-09-14

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