EP3030360A1 - Profilé en acier, profilé porteur et procédé de fabrication d'un profilé en acier - Google Patents

Profilé en acier, profilé porteur et procédé de fabrication d'un profilé en acier

Info

Publication number
EP3030360A1
EP3030360A1 EP14747942.2A EP14747942A EP3030360A1 EP 3030360 A1 EP3030360 A1 EP 3030360A1 EP 14747942 A EP14747942 A EP 14747942A EP 3030360 A1 EP3030360 A1 EP 3030360A1
Authority
EP
European Patent Office
Prior art keywords
steel profile
steel
profile
flange portion
flange
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Withdrawn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
EP14747942.2A
Other languages
German (de)
English (en)
Inventor
Achim WÜNSCH
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.)
Origami Steel Corp
Original Assignee
Origami Steel Corp
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 Origami Steel Corp filed Critical Origami Steel Corp
Publication of EP3030360A1 publication Critical patent/EP3030360A1/fr
Withdrawn legal-status Critical Current

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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/08—Bending by altering the thickness of part of the cross-section of the work
    • 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
    • B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
    • B21D47/01—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers

Definitions

  • the invention is in the field of steel processing and steel production, in particular the production of steel profiles.
  • the invention relates to a method for producing a steel profile, comprising the steps of: providing a metal workpiece, in particular a strip steel workpiece having a thickness of at least 5 mm, forming a weakening in the region of an intended bend of the metal workpiece and bending the Metal workpiece for creating a bend on the metal workpiece.
  • the invention further relates to a steel profile and a supporting profile.
  • the invention has recognized that the known methods have several disadvantages.
  • the known methods are energy-intensive, labor-intensive and involve high set-up or start-up costs. This results in high minimum order quantities and comparatively long delivery times, so that a far-sighted production planning and a high inventory level are necessary in order to be able to react flexibly to customer orders.
  • a machining of the workpiece before bending in a variety of known from the prior art method is usually not possible, since in particular for workpieces with a thickness of at least 5 mm can not be predicted whether the machining after bending at a desired Position will be arranged relative to the bend.
  • machining of a metal workpiece can be carried out particularly advantageously already before bending. That Machining can be done in a flat state of the workpiece, which greatly simplifies machining.
  • the metal workpiece is preferably formed by a band steel workpiece.
  • the weakening of the workpiece runs along an intended bend of the workpiece. More preferably, the weakening is formed by forming a recess, in particular a notch, in the workpiece. This represents a particularly expedient and simple variant for forming a weakening in the region of an intended bend of the workpiece.
  • the term notch is understood to mean a recess which is formed in the workpiece in such a way that it has an open end.
  • the weakening in particular a recess forming the weakening, takes place by milling, rolling, stamping or embossing.
  • the weakening after bending is enhanced by welding, in particular laser welding, preferably by a laser hybrid welding method.
  • the welding is used to completely close a partially closed recess during bending. In this case, for example, abutting ends of the recess of the workpiece can be permanently connected by welding.
  • laser welding is to be understood in the context of the present invention, the permanent connection of two ends of a steel profile using an optically focused laser beam with high intensity. More preferably, the welding is effected by means of a focused laser beam, which is directed from the outside of the bending of the workpiece to the bending inside, in particular along a zero gap formed by the recess after bending, the focus is preferably within the workpiece.
  • zero gap is to be understood in the context of the present invention such that the legs of the recess lie after bending against each other, for example, have contact, without forming a chemical compound.
  • welding from the outside of the bend of the workpiece to the inside of the bend as well as from the inside of the bend to the outside of the bend is possible independently of the bending angle.
  • some bends can not be welded starting from the bending inside, since individual bending inside sides or zero gaps are concealed by adjacent strips of the workpiece and thus are not accessible to a laser beam.
  • welding can be carried out particularly easily by means of a laser beam, which is directed from the outside of the bend to the inside of the bend.
  • a single focused laser beam is used instead of an oscillating beam or two partial laser beams.
  • a weakening-forming recess formed on a bending inner side is downsized or closed in bending, or a weakening-forming recess formed on a bending outside of the workpiece is increased in bending.
  • a recess forming the weakening is designed to be particularly suitable for bending.
  • the method is simplified because a material recess formed before bending can be carried out in such a way that it can be adapted to the bend to be made accordingly.
  • the recess is adaptable to a designated bending angle.
  • a recess forming the weakening is provided in the workpiece, the recess formed on a bending inside of the workpiece being closed after bending by welding, in particular laser welding.
  • a method is specified, with which a recess, which is first reduced in bending, is closed by welding to reinforce the steel profile.
  • limbs which delimit a recess forming the weakening are permanently connected.
  • a weakening provided for the bending is additionally reinforced after the bending.
  • bending preferably takes place by free bending, swivel bending or swaging. This allows the bending of the workpiece to form a steel profile is particularly simple and automated.
  • the provision of the workpiece takes place by unrolling a strip steel roll, in particular a coil.
  • the term coil is to be understood in the context of the present invention, a wound metal strip, for example in the form of a strip steel roll.
  • a recess is introduced before bending, which is aligned transversely to the longitudinal direction of the strip blank and is open to a lateral boundary of the strip blank.
  • the recess may for example be formed as a slot-like recess, which is introduced laterally into the band steel blank, for example by means of a punching tool, a high-energy laser beam or a steel saw.
  • the longitudinal direction of the strip steel blank is preferably the direction in which the strip steel blank moves during the production process, for example on a conveyor belt or a roller conveyor. This may in particular also be the direction in which a strip steel unwound from a strip steel roll is fed to the assembly line.
  • the recesses allow operations in the manufacturing process to be performed in a first region of the strip blank without affecting a second region of the strip blank that is separated from the first region by the recess. More preferably, the recess protrudes into the strip blank in such a way that a bending moment in a first region of the strip blank, which delimits a first section of the recess, does not transfer to a second section of the strip blank, which delimits a second section of the recess.
  • the bends made in accordance with the method of the present invention can be made without the need to completely separate individual sections of the strip blank prior to bending.
  • the recesses are each introduced with a predetermined depth in the strip blank so that a bending moment in a first region of the strip blank does not transfer to a second region of the strip blank, but the two areas still remain connected in a predetermined portion of the strip blank.
  • the first region of the strip steel blank is located, for example, in a bending device, so that the workpiece can be bent therein.
  • the recess serves in this case to the fact that the bend does not transfer to a second region of the strip steel blank, which is for example still in the attenuation device.
  • the processing comprises at least one of the steps:
  • Laser cutting in particular laser cutting of oblong holes
  • the processing includes laser cutting, in particular laser cutting of oblong holes, cutting, in particular drilling, and / or labeling, in particular laser marking.
  • the laser cutting is preferably used, in addition to or alternatively to the cutting of slots, also for the production of holes and cutouts.
  • an edge of the workpiece is machined by machining, in particular milling.
  • welding of a component laser deposition welding (cladding), milling of grooves and notches, etc. is preferred.
  • Punching is preferably carried out on workpieces having a comparatively small thickness.
  • the method according to the present invention is particularly suitable for machining provided at a predetermined location of the bent steel profile.
  • such machining can be carried out in a particularly simple manner before the workpiece is bent, namely in the flat state of the workpiece.
  • the bending process according to the invention (with formation of a weakening before bending) makes it possible that the machining will be arranged after bending at the intended position on the steel profile.
  • the following example is intended to further clarify this advantage: If a bore after bending should have a predetermined distance to a bend of the steel profile, this bore was made only on the bent steel profile according to the known from the prior art method. For this purpose, the steel profile had to be clamped in different positions.
  • the bore could not be made prior to bending because the bending process was unpredictable in terms of the exact position of the bend on the workpiece. Since bending with respect to the position of the bend can be accurately predicted with the method according to the invention, the bore can be made particularly easily on the flat workpiece before bending and at the same time the position of the bore on the steel profile can be ensured.
  • the object mentioned at the outset is also achieved by a steel profile which is produced by the abovementioned method.
  • the steel profile according to the invention comprises at least one wall portion and at least one flange portion for connecting the steel profile with another steel profile, wherein the flange portion extending from the wall portion and is aligned at an angle of about 70 ° to about 90 ° to the wall portion ,
  • the embodiment represents a particularly expedient variant of a steel profile which can be produced by a method according to the invention.
  • steel profile according to the invention allows these holes can be easily introduced into the workpiece, namely in the flat state of the workpiece.
  • the steel profile according to the invention comprises a first, second and third wall portion and a first and second flange portion, wherein the first, second and third wall portion and the first and second flange portion arranged in a polygonal manner to each other, in particular polygonal-like stringed together. Due to the polygonal pull-like arrangement of the wall and flange sections, different profile shapes of the steel profile can be produced by the method according to the invention. In particular, steel profiles to be connected to one another via the flange sections can be produced in a particularly simple and exact manner by the method according to the invention. Compared to the methods known from the prior art, in which the profile shapes are formed by rolling, energy is also saved.
  • the first, second and third wall sections are each oriented at an angle of approximately 90 ° to each other and the first flange section is oriented at an angle of approximately 90 ° to the first wall section and extends from the first wall portion, wherein the second flange portion is aligned at an angle of about 90 ° to the third wall portion and extending from the third flange portion.
  • the first, second and third wall sections are each oriented at an angle of approximately 40 ° to each other, wherein the first flange section is aligned at an angle of approximately 70 ° to the first wall section and extends from the first wall portion and wherein the second flange portion is aligned at an angle of about 70 ° to the third wall portion and extending from the third wall portion.
  • a support profile of this type which is composed essentially of two interconnected steel profiles of the first training described above, can be particularly simple, inexpensive and accurate produced by the inventive method.
  • a support profile of this type which is composed essentially of three interconnected steel profiles of the second training described above, can be produced particularly simple, inexpensive and precise by the inventive method ,
  • the first or second flange portion of the steel profile has at least one recess which, when the first or second flange portion is connected to a second or first flange portion of another steel profile, substantially coincides a recess of the second or first flange portion of the further steel profile is superimposed.
  • the term "superimposed" is to be understood in the context of the present invention such that the respective flange portions of the different profiles are adjacent to each other, that a friction bolt or a screw can be performed simultaneously through both recesses of the flange to a firm connection between the Flange sections and thus to achieve between the steel profiles.
  • the recess is preferably produced in a processing step according to the inventive method, for example by laser cutting or drilling. Preferred embodiments of the invention will now be explained with reference to the drawings.
  • FIG. 2 shows a first embodiment of a steel profile according to the invention in a cross-sectional view
  • FIG. 3 shows a first embodiment of a support profile according to the invention in a perspective view
  • FIG. 5 shows a second embodiment of a steel profile according to the invention in a perspective view
  • FIG. 6 shows a first embodiment of a system for producing the steel profile shown in FIG. 2 in a perspective view
  • Fig. 7 is a partial exploded view of the system shown in Fig. 6 and
  • Fig. 8 shows an embodiment of a steel frame in a perspective view.
  • Fig. 1 shows an embodiment of a method according to the invention for producing a steel profile 1.
  • a workpiece 2 is shown in each case in a cross-sectional view.
  • the metal workpiece 2 is provided in the form of a rectangular strip steel blank 4, which has a thickness 5 of at least 5 mm and a length 6.
  • a step B the metal workpiece 2 is machined by drilling a borehole 7 by means of a drill 8.
  • a step C weakenings 10 in the form of recesses 11 are formed in a region 12 of an intended bend 13 of the metal workpiece 2.
  • a tool unit 15, which serves as a weakening device 14, a section works by machining from the metal workpiece 2 out.
  • V-shaped recesses 11 are formed with two substantially equal legs 16.
  • a method step D the metal workpiece 2 is bent in the bending region 12 by means of a bending device 20 in such a way that a recess 11 formed in step B is closed on a bending inner side 21 of the metal workpiece 2.
  • the legs 16 of the recess formed in step 1 1 1 abut each other in the bent state.
  • the legs 16 are connected to each other inextricably by laser welding, so that the originally formed as a recess 1 1 weakening is reinforced to form a steel profile 1 with high rigidity.
  • the laser welding takes place in such a way that the gap formed by the adjoining legs 16 is closed by means of a laser weld.
  • the gap formed can also be a technical zero gap.
  • FIG. 2 shows a cross-sectional view of a first exemplary embodiment of three steel profiles 101, 102 and 104 according to the invention, which are each produced by a method according to the invention.
  • Each steel profile 101, 102 and 104 shown in FIG. 2 has a first wall section 110, 112 and 114, a second wall section 116, 118 and 120 and a third wall section 122, 124 and 126, respectively.
  • each steel profile 101, 102 or 104 has a first flange section 128, 130 and 132 and a second flange section 134, 136 and 138, respectively.
  • the first flange portion 128, 130 and 132 extends starting from the first wall portion 1 10, 1 12 and 1 14 and is at an angle of about 70 ° to the first wall portion 1 10, 1 12 and 1 14 aligned.
  • the second wall portion extends 1 16, 1 18 and 120 at an angle of about 40 ° to the first wall portion 1 10, 1 12 and 1 14.
  • the third wall portion 122, 124 and 126 extends at an angle of about 40 ° to the second wall portion 1 16, 1 18 and 120.
  • the second flange portion 134, 136 and 138 Starting from a second wall portion 1 16 , 1 18 and 120 facing away from the end of the third wall portion 122, 124 and 126, the second flange portion 134, 136 and 138 at an angle of 70 ° to the third wall portion 122, 124 and 126th
  • the angled alignment of the above-mentioned sections to one another is achieved in each case by application of the method according to the invention.
  • a weakening in the form of a recess is removed by machining in the region of the transition from the first wall section 11, 12 or 14 to the first flange section 128, 130 and 132, respectively.
  • the first flange portion 128, 130 and 132 is bent relative to the first wall portion 1 10, 1 12 and 1 14, respectively.
  • the steel sections 101, 102 and 104 shown in FIG. 2 can be connected to one another via the flange sections and thereby form a carrier profile 210, as shown in FIG. 3 in a perspective view.
  • the same or functionally identical elements as in Fig. 2 are provided with the same reference numerals.
  • the first flange section 128 of the first steel profile 101 is connected to the second flange section 138 of the third steel profile 104.
  • the first flange portion 130 of the second steel profile 102 is connected to the second flange portion 134 of the first steel profile 101.
  • the first flange portion 132 of the third steel profile 104 is connected to the second flange portion 136 of the second steel profile 102.
  • the interconnected flange portions are each substantially congruent to each other.
  • the flange sections have bores 212 which are produced in the processing step of the method according to the invention shown in FIG.
  • the bores are arranged on the respective first flange section 128, 130 or 132 of the steel profile 101, 102 and 104, respectively, so that they overlap bores on the respective second flange section 138, 134 or 136 of the steel profile 104, 101 and 102.
  • a bolt for example a so-called friction bolt, is inserted through the bores 212 of the flange section 128 and simultaneously through the bores of the flange section 138.
  • 4 shows a cross-sectional view of a second exemplary embodiment of a steel profile 301 according to the invention, which is produced by a method according to the invention.
  • 5 shows a perspective view of the steel profile 301.
  • the steel profile 301 shown in FIGS. 4 and 5 has a first wall section 310, a second wall section 316 and a third wall section 322.
  • the steel profile 301 has a first flange section 328 and a second flange section 334.
  • the first flange portion 328 extends from the first wall portion 310 and is oriented at an angle of about 90 ° to the first flange portion 328.
  • the second wall section 316 extends at an angle of approximately 90 ° to the first wall section 310.
  • the third wall section extends 322 at an angle of about 90 ° to the second wall portion 316.
  • the second flange portion 334 extends at an angle of 90 ° to the third wall portion 322nd
  • the angled alignment of the above-mentioned sections to one another is achieved in each case by application of the method according to the invention.
  • a weakening in the form of a recess is removed in the region of the transition from the first wall section 310 to the first flange section 328.
  • the first flange portion 328 is bent relative to the first wall portion 310.
  • FIG. 6 shows a perspective view of an exemplary embodiment of a system 400 according to the invention for producing a steel profile 101, 102 or 104, as shown in FIG. 2.
  • FIG. 7 shows a partial exploded view of the system 400 shown in FIG. 6, ie, FIG. 7 shows only a metal workpiece 406 being unrolled from a strip steel roller 402 and tools acting on the metal workpiece 406 ,
  • the band steel roller 402 is rotatably supported in a feeder 404 so that the metal workpiece 406 in the form of band steel can be taken out by rotating the band steel roller.
  • Recesses 412 are introduced by machining into the metal workpiece 406 by means of a milling unit 410.
  • a drilling unit 416 downstream in the conveying direction 408 generates boreholes 418 in the metal workpiece 406.
  • recesses 414 oriented essentially transversely to the conveying direction 408 are introduced into the metal workpiece 406 by means of laser cutting.
  • the metal workpiece 406 is bent into the intended profile shape.
  • a laser welding device 430 the zero gaps formed on the recesses 412 are closed during bending.
  • a finished manufactured steel profile 440 is removed after separation from the strip steel workpiece in an end region of the system.
  • Fig. 8 shows an embodiment of a steel frame 500, which is provided as a steel frame, for example, for a wind turbine.
  • the steel setting 500 consists essentially of six support profiles 502, 504, 506, 508, 510 and 512. Each support profile is constructed substantially like the support profile 210 shown in FIG. Between the support profiles 502, 504, 506, 508, 510 and 512, further support profiles extend. For example, between the tag profiles 502 and 512 extends a horizontally oriented support profile 520, which is constructed substantially like the steel profile shown in Figures 4 and 5. In addition, in each case between the support section 502 and 512 and the support section 520 extends a support profile 522 and 524.
  • the support profiles 522 and 524 are essentially constructed as the steel profile shown in Figures 4 and 5.
  • the support profile 502, 504, 506, 508, 510 and 512 is respectively on a base 532, 534, 536, 538, 540 and 542 and is connected to the base 532, 534, 536, 538, 540 and 542 by means of a Concrete cover 552, 554, 556, 558, 560 and 562 firmly connected.
  • the base 532, 534, 536, 538, 540 and 542 consists for example of concrete and is embedded in the ground and / or anchored to the ground.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un profilé en acier qui comprend les étapes consistant en: la production (A) d'une pièce en métal (2; 406), en particulier d'une pièce d'acier en bande qui présente une épaisseur d'au moins 5 mm, la formation (C) d'un affaiblissement dans la région d'un cintrage (13) prévu de la pièce en métal (2) et le cintrage (D) de la pièce en métal (2) pour produire un cintrage (13) sur la pièce en métal (2). Le procédé est caractérisé en ce que le traitement (b) de la pièce en métal (2) a lieu avant le cintrage (D). L'invention concerne également un profilé en acier ainsi qu'un profilé porteur.
EP14747942.2A 2013-08-09 2014-08-06 Profilé en acier, profilé porteur et procédé de fabrication d'un profilé en acier Withdrawn EP3030360A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013215830.0A DE102013215830A1 (de) 2013-08-09 2013-08-09 Stahlprofil, Tragprofil und Verfahren zur Herstellung eines Stahlprofils
PCT/EP2014/066931 WO2015018871A1 (fr) 2013-08-09 2014-08-06 Profilé en acier, profilé porteur et procédé de fabrication d'un profilé en acier

Publications (1)

Publication Number Publication Date
EP3030360A1 true EP3030360A1 (fr) 2016-06-15

Family

ID=51292969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14747942.2A Withdrawn EP3030360A1 (fr) 2013-08-09 2014-08-06 Profilé en acier, profilé porteur et procédé de fabrication d'un profilé en acier

Country Status (3)

Country Link
EP (1) EP3030360A1 (fr)
DE (1) DE102013215830A1 (fr)
WO (1) WO2015018871A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111069371A (zh) * 2019-12-30 2020-04-28 安徽机电职业技术学院 一种重型板材复合加工方法及一种重型板材
DK202000040U3 (da) * 2020-05-20 2021-08-27 Befi Aps Lyseholder til at holde gravlys
US11766828B2 (en) * 2020-07-15 2023-09-26 Spirit Aerosystems, Inc. Method of manufacturing folded structure with additive features
CN112642889B (zh) * 2020-12-29 2023-05-23 深圳Tcl数字技术有限公司 一种背板加工方法、背板及显示设备

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Publication number Priority date Publication date Assignee Title
JPS57209720A (en) * 1981-06-16 1982-12-23 Toyo Meiban Seizo Kk Method for bending work of metallic thin sheet
JP3675148B2 (ja) * 1997-12-26 2005-07-27 株式会社イトーキクレビオ ロール成形法による溝形部材の製造方法
US6877349B2 (en) * 2000-08-17 2005-04-12 Industrial Origami, Llc Method for precision bending of sheet of materials, slit sheets fabrication process
US20090205387A1 (en) * 2008-02-16 2009-08-20 Industrial Origami, Inc. System for low-force roll folding and methods thereof
DE102011100633A1 (de) 2011-05-05 2012-11-08 Pilepro Llc Verfahren zur Herstellung eines Stahlprofils

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Also Published As

Publication number Publication date
DE102013215830A1 (de) 2015-02-12
WO2015018871A1 (fr) 2015-02-12

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