EP2769780B1 - Procédé destiné à générer un élément en tôle - Google Patents

Procédé destiné à générer un élément en tôle Download PDF

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Publication number
EP2769780B1
EP2769780B1 EP13000852.7A EP13000852A EP2769780B1 EP 2769780 B1 EP2769780 B1 EP 2769780B1 EP 13000852 A EP13000852 A EP 13000852A EP 2769780 B1 EP2769780 B1 EP 2769780B1
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EP
European Patent Office
Prior art keywords
openings
sheet metal
perforation
metal part
produced
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.)
Active
Application number
EP13000852.7A
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German (de)
English (en)
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EP2769780A1 (fr
Inventor
Rolf Kölle
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.)
Ing Rolf Koelle Ek
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Ing Rolf Koelle EK
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Application filed by Ing Rolf Koelle EK filed Critical Ing Rolf Koelle EK
Priority to EP13000852.7A priority Critical patent/EP2769780B1/fr
Publication of EP2769780A1 publication Critical patent/EP2769780A1/fr
Application granted granted Critical
Publication of EP2769780B1 publication Critical patent/EP2769780B1/fr
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    • 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
    • B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
    • B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
    • 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
    • B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
    • B21D13/10—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form into a peculiar profiling shape

Definitions

  • the invention relates to a method for producing a sheet metal part with a plurality of openings and a relief-like surface.
  • Perforated sheet metal parts with a relief-like surface are used in many ways, for example as decorative elements for cladding purposes, as the outer wall of devices or in combination with insulating material as a soundproofing element.
  • the relief-like surface serves to increase the rigidity of the sheet metal part, since the starting material has a small sheet metal thickness.
  • the arrangement of openings is used, for example, for the passage of air or for sound absorption. Taking into account the respective requirements, both the relief-like surface and the arrangement of the openings should be tailored to the respective application. However, this would require a large number of different tools, which is expensive for reasons of cost. The production of special designs is possible with many individual production steps, but not economical.
  • a method for producing a sheet metal part with several openings and a relief-like surface is known.
  • the sheet metal part is deformed in that a spherical cap takes place in one work step, by means of which a contour with a dome arrangement is generated from the sheet metal plane, the dome arrangement being executed on one side to form a sheet metal plane.
  • the sheet metal part is provided with a perforation in one work step.
  • the US 2005/0262918 A1 describes a method and a device for pressing sheet metal material, a dome taking place in one work step, by means of which a contour with a tip arrangement is generated from the sheet metal plane and openings are made in the tips in a later operation.
  • the invention is based on the object of creating a method for producing a sheet metal part with openings and a relief-like surface, with which sheet metal parts with different structures with regard to the surface and openings can be produced more easily.
  • the method according to the invention it is possible to provide perforations in the sheet metal part, the number of openings being variable. Because the openings created with the perforation are created simultaneously with or after the dome, their shape and position on the dome can be precisely determined, which not only influences the properties of the sheet metal part, but also achieves an excellent aesthetic design.
  • the dome arrangement produced by the spherical cap can be designed on one side or alternating with respect to the sheet metal plane.
  • the sheet metal part is provided with an additional perforation in one work step, the diameter of the openings being 0.1 mm, this perforation being carried out before the capping.
  • At least one of the work steps namely the spherical cap or one of the perforations, is carried out only partially in relation to the surface of the sheet metal part.
  • This has the advantage that the work steps are only carried out on those surfaces of the sheet metal part where this is necessary. Individual requirements that must be placed on the sheet metal part can also be taken into account.
  • it can be advantageous for the work steps of capping and perforation on the peaks to be carried out simultaneously.
  • at least one of the work steps, namely the doming or one of the perforations to be subdivided into time segments that are carried out successively on the sheet metal part. This has the advantage that only a simpler tool has to be created for certain designs, which can be inexpensive for reasons of cost.
  • the openings for the perforating work steps can be produced in different ways, for example by punching or punching. These types of processes allow different shapes of the openings, for example round or angular or also shaped as desired. Such punched or perforated openings expediently have a diameter 0.5 mm. According to the invention it is provided that openings in the form of nozzles are produced by piercing with needles. Such openings can be made with a smaller diameter than punched holes, with a diameter of 0.1 mm to 0.3 mm for the nozzles of the additional perforation and a diameter of 0.3 mm to 2 mm for the nozzles of the perforation at the tips , 0 mm is provided.
  • a further variant embodiment of the method consists in that the openings of the additional perforation and / or the openings of the perforation at the peaks are produced with different distances between the openings. For the perforation at the crests, this means that an opening is not created at every crest, but for example in one area at every second crest and in another area at every third crest.
  • the number of openings in the additional perforation is at least 1 / cm 2 and at most 36 / cm 2 and the distance between the openings of this perforation is 1 mm.
  • Another possible variation for the production of the sheet metal part is that the shape of the dome arrangement produced by spherical capping is variable with respect to the distance between the dome and / or the dome height.
  • the thickness of the starting material of the sheet metal part is preferably 0.01 mm to 1.0 mm. It is also possible to make the peaks rounded or flattened.
  • the working steps of the method according to the invention are expediently carried out in a press.
  • Metal materials or steel stainless steel, for example material number 1.4301, 1.4541 or 1.4828, high-temperature steels such as those known under the trade name Inconel, light metal alloys made of aluminum or magnesium as well as copper, brass or titanium are considered as suitable materials for the production of such sheet metal parts .
  • the Fig. 1 shows the basic arrangement of an alternating dome arrangement in a plan view of a section of a sheet metal part 1 formed by spherical capping.
  • the arrangement the dome is regular in the example shown, but it is also possible to create an irregular pattern or areas with different patterns. It is also possible, based on the surface of the sheet metal part 1, to implement the spherical cap only partially, so that the dome arrangement is only provided in certain areas of the sheet metal part 1.
  • a strip, a sheet metal sheet or a plate can serve as the starting material for the sheet metal part, the plate being cut from the sheet metal strip or sheet metal using a cutting tool, scissors or a laser.
  • the sheet preferably has a thickness of 0.01 mm to 1.0 mm.
  • the Fig. 2 shows a section of the sheet metal part 1 along the line II-II in Fig. 1 , from which the surface of a dome arrangement with upwardly directed dome 2 is clear.
  • Two adjacent peaks 2 directed upward from the sheet metal plane E are arranged at a distance a, between which there is a section extending to the sheet metal plane E. Links in Fig. 2 the tips 2 have a round shape, whereas on the right in Fig. 2 a variant with a flat domed roof is shown. Other shapes of the peaks are also possible.
  • the Fig. 3 shows a section through the sheet metal part 1 along the line III-III in Fig. 1 , that is to say in a diagonal direction, the adjacent, upwardly directed peaks 2 being at a distance b in this section plane. Between two peaks 2 there is a downwardly directed tip 3, whereby the alternating tip arrangement is given. In the embodiment of Fig. 3 The upwardly directed peaks 2 are somewhat more pronounced than the downwardly directed peaks 3 in relation to the sheet metal plane E. In the exemplary embodiment shown, other shapes are also possible. Links in Fig. 3 the tips 2, 3 have a round shape, on the right the tips 2, 3 are shown flattened.
  • the Fig. 4 shows an enlarged illustration of a section through the sheet metal part 1, which is essentially the Fig. 3 corresponds, but with a little less pronounced Tip 2 and 3, which are formed alternately to the sheet plane E.
  • the sheet metal thickness which is between 0.01 mm and 1.0 mm, is designated by S.
  • the entire expression, ie on both sides of the sheet plane E, is referred to as the embossing height h. It should be pointed out that the embossing height h does not have to extend symmetrically to the sheet plane E, but can also be shifted to this. Links in Fig. 4 the peaks 2, 3 are round and right in Fig. 4 the tips 2, 3 are flat.
  • the Fig. 5 shows an alternative embodiment of the sheet metal part 1, with the peaks 2 being formed on only one side in relation to the sheet metal plane E.
  • the Figures 4 and 5 show the domed sheet metal part 1 before the creation of openings through the perforation.
  • the Fig. 6 shows an enlarged view of a section of a section through the sheet metal part 1 with openings 4 and 5 generated by the additional perforation in the left section and openings 6 and 7 generated by perforation at peaks 2, 3 in the middle and in the right section.
  • the sheet metal part 1 is brought into a contour with an alternating arrangement of peaks made of upwardly directed peaks 2 and downwardly directed peaks 3 by spherical capping.
  • the openings 4 are shaped as a nozzle and have a diameter of 0.1 mm to 0.3 mm.
  • the openings 5 are punched or perforated with a diameter ⁇ 0.5 mm in any shape.
  • openings 6 can be made in the form of nozzles or as an opening 7 by punching or punching.
  • the openings 6 and 7 are basically arranged at the highest point of a knoll 2, and the lower knobs 3 can also be provided with openings, if necessary.
  • the openings 7 can, for example, have a diameter of> 0.5 mm, wherein the shape can be not only round but also angular or any shape. In contrast, the diameter of the openings 6 is in the range from 0.3 mm to 2.0 mm.
  • the openings 6 and 7 are each made at the same time as or after the capping to form the dome arrangement.
  • the nozzle shape of the openings 4 and 6 can be different depending on the shape of the tool, round or angular or oval cross-sections being possible.
  • the angle ⁇ enclosed by the nozzle walls is preferably in the range from 10 ° to 60 °, in particular 30 °.
  • the Fig. 7 shows a section of a section through a sheet metal part 1 with a surface produced by spherical capping and both perforations.
  • the additional perforation forms openings 4, which are made in the form of nozzles, with a diameter of 0.1 mm to 0.3 mm, the axial direction of the nozzle 4 being different, depending on the position in the dome sheet metal part.
  • the additional perforation can form punched or perforated openings 5 instead of the nozzles 4 or in addition to them, as has already been done Fig. 6 is described.
  • openings 6 in the form of nozzles with a diameter of 0.3 mm to 2.0 mm or punched or perforated openings 7, the openings 6 and / or 7 being arranged at the highest point of the dome 2.
  • the additional perforation takes place before the cap, the perforation at the peaks can be done at the same time as the cap or afterwards.
  • the Fig. 8 shows a detail of a section through a sheet metal part 1, for the sake of simplicity only the relief-like surface produced by the dome and the openings 6 in the form of nozzles formed by the perforation on the peaks are shown.
  • the openings 6 are located at the highest point of the respective peaks 2, 3, these nozzles of the openings 6 being shaped in the same direction.
  • An alternative embodiment of the sheet metal part 1 is shown in Fig. 9 shown, in which the nozzles of the openings 6 are directed in opposite directions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Claims (11)

  1. Procédé de génération d'un élément de tôle (1) avec plusieurs ouvertures (4, 5, 6, 7) et une surface en relief, dans lequel l'élément de tôle (1) est déformé du fait que
    a) dans une étape de travail un formage en calotte est effectué, par lequel un contour avec un agencement de dôme est généré hors du plan de tôle (E), dans lequel l'agencement de dôme est réalisé d'un côté d'un plan de tôle (E) ou en alternance,
    b) dans une étape de travail l'élément de tôle (1) est pourvu d'une perforation et la perforation est effectuée simultanément avec ou après le formage en calotte, dans lequel ces ouvertures sont générées au point le plus haut de dômes (2, 3) de l'agencement de dôme,
    caractérisé en ce que le diamètre de ces ouvertures (6, 7) est ≥ à 0,3 mm et
    c) que l'élément de tôle (1) est pourvu dans une étape de travail d'une perforation supplémentaire, dans lequel le diamètre des ouvertures (4, 5) est ≥ à 0,1 mm, dans lequel cette perforation est réalisée avant le formage en calotte, dans lequel les ouvertures (4) de la perforation supplémentaire sont fabriquées avec un diamètre de 0,1 mm à 0,3 mm, et les ouvertures (6) de la perforation en les dômes (2, 3) sont fabriquées avec un diamètre de 0,3 mm à 2,0 mm et que les ouvertures (6) dans les dômes (2, 3) et/ou les ouvertures (4) de la perforation supplémentaire sont formées en buses.
  2. Procédé selon la revendication 1,
    caractérisé en ce que les buses (6) sont formées dans des sens opposés.
  3. Procédé selon la revendication 1,
    caractérisé en ce que les buses (4, 6) sont formées dans le même sens.
  4. Procédé selon la revendication 1,
    caractérisé en ce que les ouvertures (4, 5) de la perforation supplémentaire et/ou les ouvertures (6, 7) de la perforation dans les dômes (2, 3) sont fabriquées avec des distances différentes entre les ouvertures.
  5. Procédé selon la revendication 1,
    caractérisé en ce que le nombre des ouvertures (4, 5) de la perforation supplémentaire est au moins ≥ à 1/cm2 et au maximum de 36/cm2.
  6. Procédé selon l'une des revendications 1 à 5,
    caractérisé en ce que la distance entre les ouvertures (4, 5) de la perforation supplémentaire est ≥ à 1 mm.
  7. Procédé selon l'une des revendications 1 à 6,
    caractérisé en ce que la forme de l'agencement de calotte fabriqué par formage en calotte est variable par rapport à la distance des dômes (2, 3) l'une de l'autre et/ou à la hauteur de calottes.
  8. Procédé selon l'une des revendications 1 à 7,
    caractérisé en ce que les étapes de travail a) à c) sont réalisées dans une presse.
  9. Procédé selon la revendication 1,
    caractérisé en ce qu'au moins une des étapes de travail, à savoir le formage en calotte ou une des perforations est réalisée juste partiellement par rapport à la surface de l'élément de tôle (1).
  10. Procédé selon la revendication 1,
    caractérisé en ce que les étapes de travail du formage en calotte et de la perforation sont réalisées simultanément dans les dômes (2, 3).
  11. Procédé selon l'une des revendications 1 à 7,
    caractérisé en ce qu'un angle (α) inclus par des parois de buse est de 10° à 60°, en particulier de 30°.
EP13000852.7A 2013-02-20 2013-02-20 Procédé destiné à générer un élément en tôle Active EP2769780B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13000852.7A EP2769780B1 (fr) 2013-02-20 2013-02-20 Procédé destiné à générer un élément en tôle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13000852.7A EP2769780B1 (fr) 2013-02-20 2013-02-20 Procédé destiné à générer un élément en tôle

Publications (2)

Publication Number Publication Date
EP2769780A1 EP2769780A1 (fr) 2014-08-27
EP2769780B1 true EP2769780B1 (fr) 2020-11-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13000852.7A Active EP2769780B1 (fr) 2013-02-20 2013-02-20 Procédé destiné à générer un élément en tôle

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938963A (en) * 1973-10-01 1976-02-17 Hale Jesse R Sandwich core panel having cured face sheets and a core formed with projecting modes
US4077247A (en) * 1975-09-30 1978-03-07 United Technologies Corporation Method and apparatus for improving the formability of sheet metal
US4562718A (en) * 1983-03-11 1986-01-07 Precision Tool & Gauge Pty. Ltd. Pallet and method of production
EP0677448A3 (fr) * 1994-04-12 1996-03-27 Goldau Ursula Palette en tÔle métallique.
JP4345578B2 (ja) * 2004-05-31 2009-10-14 株式会社デンソー 板材のプレス加工装置
DE102006062189B4 (de) * 2006-12-22 2009-03-19 Dr. Mirtsch Gmbh Verfahren zum Herstellen einer strukturierten Materialbahn für das Durchströmen von fluiden Medien, strukturierte Materialbahn und Verwendung derselben

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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