EP2552621A1 - Procédé de fabrication de pièces perforées d'une tôle ou d'un matériau en bande utilisées dans l'industrie de la construction et pièce fabriquée par le procédé - Google Patents

Procédé de fabrication de pièces perforées d'une tôle ou d'un matériau en bande utilisées dans l'industrie de la construction et pièce fabriquée par le procédé

Info

Publication number
EP2552621A1
EP2552621A1 EP11713940A EP11713940A EP2552621A1 EP 2552621 A1 EP2552621 A1 EP 2552621A1 EP 11713940 A EP11713940 A EP 11713940A EP 11713940 A EP11713940 A EP 11713940A EP 2552621 A1 EP2552621 A1 EP 2552621A1
Authority
EP
European Patent Office
Prior art keywords
hole
pressing
piece
strip material
strip
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.)
Withdrawn
Application number
EP11713940A
Other languages
German (de)
English (en)
Inventor
Raimo A. Komaro
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.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works 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
Application filed by Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Publication of EP2552621A1 publication Critical patent/EP2552621A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B1/2612—Joist hangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K23/00—Making other articles
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/10—Piercing billets
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/58—Connections for building structures in general of bar-shaped building elements
    • E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
    • E04B1/5831—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially rectangular form

Definitions

  • the invention relates to perforated pieces of metal sheet or strip material used in the construction industry, such as, for example, manufacturing nailing plates, wind brace collars, and beam shoes. More precisely the invention relates to a method for manufacturing such plate or strip pieces, especially manufacturing in connection with forming the holes to be made in the piece, as well as the perforated piece manufactured by such a method.
  • perforated piece of sheet metal or strip material used in the construction industry is meant here pieces whose thickness is essentially smaller than the width and which are provided with holes for attachment of the pieces in guestion.
  • An example of such pieces is wind brace collars, which are used in construction technology to support and stiffen various structures, especially roof structures.
  • Another example of such pieces is nailing plates, which can be straight or bent into an angle and are used, for example, as corner joints in roof structures.
  • a third example of such pieces is beam shoes, which are used at joining points of beams .
  • Nailing plates which can thus be straight or bent into an angle and possibly reinforced, are manufactured from metal plates, the material thickness of which usually varies between 2.0 and 3.0 mm. Nailing plates are provided with several holes through which the nailing plates can be attached with nails, screws, or other similar devices.
  • Beam shoes are usually manufactured by bending sheet metal 2.0-3.0 mm thick, and they are provided with several holes for attaching the beam shoes with nails, screws, etc.
  • wind braces is the wind brace collar, which is usually formed from a long metal strip or piece of sheet metal that can be cut into lengths suitable for various installation sites, which strip is provided with holes along the entire length of the strip. Through these holes, the ends of wind brace collars are attached to the support structure or other attachment points, usually intermediate pieces, such as wind braces. In addition, a break is often formed along the length of the wind brace collar, to which break an adjustment tightening piece is fitted, by means of which the tension of the wind brace collar can be regulated. Attachment of the wind brace collar to an intermediate piece is realized through holes in the wind brace collar, for example as a screw joint.
  • wind brace collar strip typically 25- 80 mm, and its thickness is usually about 2.0-3.0 mm.
  • Wind brace collar strips are usually delivered wound into a coil, in which case the length of the strip is usually 25-50 m, the weight with a strip thickness of 2 mm and a width of 40 mm is about 16-32 kg.
  • a problem in these known wind brace collars is the difficulty of handling the wind brace collar strip.
  • a wind brace collar strip wound into a coil is heavy for the installer to carry to the installation place, usually the roof structure of a building.
  • unpacking and straightening a wind brace collar strip is awkward, due to the thickness of the strip.
  • the holes are formed in manufacturing by cutting strip material away from hole places to achieve the holes in the plate or strip portion of the piece .
  • the holes are formed in a metal piece including a perforated plate or strip part for use in the construction industry in such a way that the metal or strip material is pressed stronglyat the place of the hole to be formed, advantageously from both sides simultaneously. Due to the effect of this pressing, material from the area of the hole is forced to be transferred to the edge of the hole. If necessary, at the end of formation of the hole in the area, a thin layer of material is cut away to finish the hole, but in many applications, this is not necessarily needed.
  • the solution according to the invention it is possible to strengthen the structure of the piece to be manufactured advantageously, compared to a piece manufactured in the usual way, because in the piece according to the invention, the material previously removed is transferred substantially entirely to the edges of the hole being formed in the plate or strip material.
  • the material pressed from the area of the hole is strain hardened due to the effect of being transferred by the pressing, which further strengthens the piece according to the invention.
  • the pressing process can be directed in such a way that most of the material from the area of the hole is pressed to the sides of holes being formed with respect to the most central load direction of the plate or strip materialwhen in use . In this way the strength of the piece to be formed can be improved further in this load direction.
  • the solution according to the invention makes it possible to achieve, among other things, the strength of usual wind brace collars with a thinner material thickness, in which case material savings and thereby cost savings are achieved in manufacturing.
  • thinner wind brace collars are easier to handle for the installers and easier to straighten after being taken from a coil for installation.
  • holes can be produced in the plate or strip material of the pieces in a roller-type method, in which case the plate or strip material is directed by a continuous feed between punches or pressing punching and said pressing tools perform a pressing motion repeatedly to the moving material. In this way, it is possible to speed up the manufacturing process of the pieces and achieve cost savings.
  • Formation of the hole according to the invention can be implemented by pressing the plate or strip material with a punch from both sides of the material, in which case, material transferred by pressing from the area of the hole is transferred substantially evenly to both sides of the plate or strip material, increasing the thickness of the material evenly in the edge areas of the hole with respect to both pressed surfaces.
  • a transfer of material by pressing from the area of the hole can be implemented by pressing a plate of strip material from one side only with a punch or crimp indenter, in which case the opposite side of the material is supported evenly onto a support surface. Then thickening of the material occurs substantially only on the surface being pressed, with the opposite surface being preserved substantially straight. In this way, the installation surface of the product to be manufactured can be kept advantageously sunstantially even, which makes attachment of the piece easier in the installation stage, for example to the surface of a structure to be supported or attached.
  • the method according to the invention is more precisely characterized by what is presented in the characterizing part of claim 1, and the piece according to the invention is characterized by what is presented in the characterizing part of claim 6.
  • Figures 1A and IB show schematically two pieces of a usual wind brace collar of different widths, seen from above,
  • FIGS 2A-2D show schematically stages
  • Figure 3 shows schematically a piece of a wind brace collar manufactured with a method according to the invention at the location of a hole, seen from above
  • Figure 4 shows schematically a piece of plate or strip material manufactured by an optional method according to the invention, viewed from above the hole.
  • FIGS 1A and IB pieces of two wind brace collars of different widths are shown schematically. From the figures, the structure of the wind collar braces can be seen well, which includes brace material strips 1 and 2, and holes 3 and 4, which are formed at egual intervals in the strip, and are used to attach the wind brace collar in place.
  • FIGs 2A-2D the manufacturing method of a wind brace collar according to the invention is shown, in which method, according to Figure 2A, the metal material strip 5 of the wind brace collar starts to be pressed from both sides of the strip by punches or crimp indenters 6 and 6', to form the hole.
  • the tips of the punches start to force strip material from between the tips of the punches outside the area bounded by the punches, in other words, outside of the area of the hole to be formed.
  • the material transferred by pressing from the area of the hole has accumulated in the edge area 7 of the hole, where a zone surrounding the hole has thus been formed, where the thickness of the accumulated material is greater than the thickness of the material strip 5, and in which zone the metal material located there has also been strain hardened, as a conseguence of the transfer of material achieved by the pressing in guestion .
  • the solution according to the invention can also be implemented in such a way that after the pressing by the punches 6, 6' in the manufacturing, the thin material layer 9 remaining after the pressing can be left in the final product, in other words, it does not have to be removed in a separate work stage.
  • this thin material layer is very thin, for example, about 0.2 mm thick. This is especially advantageous in manufacturing, for example, nailing plates with the solution according to the invention, in which case the thin material layer remaining after the pressing of the hole is punctured without effort by the tip of the nail when the nailing plate is attached, and it thus does not substantially affect the attachment process of the nailing plate, especially when a nailing machine is used.
  • pressing the hole is shown as occurring from both sides of the plate or strip material.
  • the hole can also be produced by pressing the material with a punch from only one side against suitable support cushion, in which case the material transferred by the pressing accumulates substantially only on the surface on the side of the pressing. In this way, the attachment surface of the piece being formed can be kept substantially straight.
  • formation of the hole according to the invention can be implemented advantageously in a roller-type method, by feeding the plate or strip material continuously between pressing tools or, alternatively, between pressing tools and support surfaces, and the hole formation is implemented continuously by repeated blows from the pressing tools.
  • FIG 3 a piece 10 of a wind brace collar manufactured by the method according to the invention is shown from the point of the hole 11. From the figure, it can be seen that by the pressing, the material transferred from the area of the hole 11 has accumulated in the edge area 12 of the hole substantially uniformly around the hole.
  • the edge area 12 of the hole 11 in the material strip of the wind brace collar 10 being greater in its thickness, strengthens the edges of the hole and thus increases the strength of the wind brace collar manufactured by the method according to the invention, compared to usual wind brace collars, in which the holes are formed by cutting strip material away from the area of the hole.
  • the material of the edge area 12 of the hole 11 has also been strain hardened due to the effect of the transfer achieved by the pressing, which further improves the strength of the wind brace collar 10 according to the invention.
  • the pressing process can be guided in such a way that most of the plate or strip material is pressed in the sides of the hole in the most central load direction of the piece being manufactured. In this way, the strength of the wind brace collar with respect to a tension load can be strengthened even further.
  • FIG 4 An example of this kind of embodiment of a finished hole is shown in Figure 4, in which the material 15 transferred to the edges of the hole pressed from the area of a hole 14 in the piece 13 has been directed in connection with the transfer in the length direction more in the length direction of the piece, which is also advantageously the most central load direction of the piece 13 being manufactured, with respect to the sides of the hole 14.
  • the thin material layer remaining after the pressing can be left to cover the area of the hole, or alternatively, it can be removed from the area of the hole in a separate finishing work stage.
  • the applicant has performed tension tests with wind brace collars according to the invention, the results of which are presented in Table 1 below.
  • the material of the wind brace collars in the tests was SSAB Dogal 500 LAD steel, with width of 40 mm.
  • the thickness of the material was 0.75 mm
  • the thickness of the material was 0.85 mm.
  • Four test pieces of wind brace collars that were perforated with the method according to the invention were used in the test series, which were substantiallyidentical, as well as an unperforated steel collar as a comparison object.
  • the test pieces of the test series were manufactured manually, so there were differences in similarity and especially in the hole formation and positioning, as can be seen from the results in Table 1, especially for test piece 2 in tension-test series 2.
  • test pieces were manufactured manually. In series manufacturing by machine, at least a 90% ratio compared to an unperforated material strip can be achieved in wind brace collars manufactured according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

La présente invention se rapporte à un procédé de fabrication d'une pièce (10) comprenant une tôle métallique ou un matériau en bande, utilisée dans l'industrie de la construction. Dans ledit procédé, des trous (11) sont formés dans la tôle métallique ou le matériau en bande en pressant la feuille ou le matériau en bande au niveau de l'endroit du trou qui doit être formé et en forçant ainsi le matériau à être transféré de la zone où le trou doit être formé, jusqu'aux bords du trou (12). L'invention concerne également une pièce fabriquée par le procédé.
EP11713940A 2010-03-30 2011-03-30 Procédé de fabrication de pièces perforées d'une tôle ou d'un matériau en bande utilisées dans l'industrie de la construction et pièce fabriquée par le procédé Withdrawn EP2552621A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20105323A FI20105323A (fi) 2010-03-30 2010-03-30 Menetelmä rakennusteollisuudessa käytettävien rei'illä varustettujen levymäisten tai nauhamaisten kappaleiden valmistamiseksi sekä menetelmällä valmistettu kappale
PCT/US2011/030500 WO2011123520A1 (fr) 2010-03-30 2011-03-30 Procédé de fabrication de pièces perforées d'une tôle ou d'un matériau en bande utilisées dans l'industrie de la construction et pièce fabriquée par le procédé

Publications (1)

Publication Number Publication Date
EP2552621A1 true EP2552621A1 (fr) 2013-02-06

Family

ID=42074426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11713940A Withdrawn EP2552621A1 (fr) 2010-03-30 2011-03-30 Procédé de fabrication de pièces perforées d'une tôle ou d'un matériau en bande utilisées dans l'industrie de la construction et pièce fabriquée par le procédé

Country Status (3)

Country Link
EP (1) EP2552621A1 (fr)
FI (1) FI20105323A (fr)
WO (1) WO2011123520A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2515754B (en) * 2013-07-01 2017-02-01 Simpson Strong-Tie Company Inc Piece for use in the construction industry and method for the manufacturing thereof
US11098478B2 (en) 2015-07-09 2021-08-24 Simpson Strong-Tie Company Inc. Fastening and alignment member

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810191A (en) * 1956-06-25 1957-10-22 Hanna Engineering Works Method of prestressing metal plates

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2627652A (en) * 1949-09-29 1953-02-10 Gen Motors Corp Method of making an element having a fin
US3387481A (en) * 1964-12-11 1968-06-11 Harvey Aluminum Inc Process for the deformation of sheet material
JPS60133935A (ja) * 1983-12-23 1985-07-17 Matsushita Electric Works Ltd 孔明き金属板の製造方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810191A (en) * 1956-06-25 1957-10-22 Hanna Engineering Works Method of prestressing metal plates

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2011123520A1 *

Also Published As

Publication number Publication date
FI20105323A0 (fi) 2010-03-30
WO2011123520A1 (fr) 2011-10-06
FI20105323A (fi) 2011-10-01

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