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EP2769780B1 - Method for producing a sheet metal part - Google Patents

Method for producing a sheet metal part 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
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EP13000852.7A
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German (de)
French (fr)
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EP2769780A1 (en
Inventor
Rolf Kölle
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Ing Rolf Koelle Ek
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Ing Rolf Koelle EK
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Priority to EP13000852.7A priority Critical patent/EP2769780B1/en
Publication of EP2769780A1 publication Critical patent/EP2769780A1/en
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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.

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

Description

Die Erfindung betrifft ein Verfahren zur Erzeugung eines Blechteils mit mehreren Öffnungen und einer reliefartigen Oberfläche.The invention relates to a method for producing a sheet metal part with a plurality of openings and a relief-like surface.

Gelochte Blechteile mit einer reliefartigen Oberfläche werden vielfältig verwendet, beispielsweise als Dekorelemente zu Verkleidungszwecken, als Außenwand von Geräten oder in Kombination mit Isoliermaterial als Schallschutzelement. Die reliefartige Oberfläche dient zur Erhöhung der Steifigkeit des Blechteils, da das Ausgangsmaterial eine geringe Blechdicke aufweist. Die Anordnung von Öffnungen dient beispielsweise zum Durchtritt von Luft oder zur Schallabsorption. Unter Berücksichtigung der jeweils gestellten Anforderungen sollten sowohl die reliefartige Oberfläche als auch die Anordnung der Öffnungen auf den betreffenden Verwendungsfall abgestimmt werden. Dies würde jedoch eine Vielzahl unterschiedlicher Werkzeuge erforderlich machen, was aus Kostengründen aufwendig ist. Die Anfertigung von Sonderausführungen ist mit vielen Einzelfertigungsschritten zwar möglich, aber nicht wirtschaftlich.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.

Aus der US 4,562,718 , die die Basis für den Oberbegriff des Anspruchs 1 bildet, ist ein Verfahren zur Erzeugung eines Blechteils mit mehreren Öffnungen und einer reliefartigen Oberfläche bekannt. Dabei wird das Blechteil dadurch verformt, dass in einem Arbeitsschritt eine Kalottierung erfolgt, durch die aus der Blechebene heraus eine Kontur mit einer Kuppenanordnung erzeugt wird, wobei die Kuppenanordnung einseitig zu einer Blechebene ausgeführt wird. Das Blechteil wird in einem Arbeitsschritt mit einer Perforation versehen.From the U.S. 4,562,718 , which forms the basis for the preamble of claim 1, 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.

Aus der US 4,077,247 ist ein Verfahren und eine Vorrichtung zur Verformung eines Blechteils bekannt, wobei aus der Blechebene heraus eine Kontur mit einer Kuppenanordnung erzeugt wird und wobei diese Kuppenanordnung mit einer Perforation versehen wird.From the U.S. 4,077,247 a method and a device for deforming a sheet metal part is known, a contour with a tip arrangement being produced from the sheet metal plane and this tip arrangement being provided with a perforation.

Die US 2005/0262918 A1 beschreibt ein Verfahren und eine Vorrichtung zum Pressen von Blechmaterial, wobei in einem Arbeitsschritt eine Kalottierung erfolgt, durch die aus der Blechebene heraus eine Kontur mit einer Kuppenanordnung erzeugt wird und in einem späteren Arbeitsgang in die Kuppen Öffnungen eingebracht werden.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.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Erzeugung eines Blechteils mit Öffnungen und einer reliefartigen Oberfläche zu schaffen, mit dem Blechteile mit unterschiedlicher Struktur bezüglich der Oberfläche und Öffnungen einfacher hergestellt werden können.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.

Diese Aufgabe wird durch ein Verfahren zur Erzeugung eines Blechteils mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a method for producing a sheet metal part having the features of claim 1.

Mit dem erfindungsgemäßen Verfahren ist es möglich, Perforationen im Blechteil vorzusehen, wobei die Anzahl der Öffnungen variabel ist. Dadurch, dass die mit der Perforation erzeugten Öffnungen gleichzeitig mit oder nach dem Kalottieren erzeugt werden, ist deren Form und die Position an der Kuppe genau bestimmbar, wodurch nicht nur die Eigenschaften des Blechteils beeinflusst werden, sondern auch eine ausgezeichnete ästhetische Gestaltung erzielt wird. Die durch Kalottierung erzeugte Kuppenanordnung kann bezogen auf die Blechebene einseitig oder alternierend ausgeführt werden.With 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.

In einer Ausgestaltung der Erfindung ist vorgesehen, dass das Blechteil in einem Arbeitsschritt mit einer zusätzlichen Perforation versehen wird, wobei der Durchmesser der Öffnungen ≥ 0,1 mm beträgt, wobei diese Perforation vor dem Kalottieren ausgeführt wird.In one embodiment of the invention it is provided that 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.

Gemäß einer weiteren Ausführungsform der Erfindung ist vorgesehen, dass zumindest einer der Arbeitsschritte, nämlich das Kalottieren oder eine der Perforationen bezogen auf die Fläche des Blechteils lediglich partiell durchgeführt wird. Dies hat den Vorteil, dass die Arbeitsschritte nur an denjenigen Flächen des Blechteils ausgeführt werden, an denen dies notwendig ist. Auch können damit individuelle Anforderungen, die an das Blechteil zu stellen sind, berücksichtigt werden. Zur Beschleunigung des Verfahrensablaufs und genauer Positionierung kann es vorteilhaft sein, dass die Arbeitsschritte des Kalottierens und der Perforation an den Kuppen gleichzeitig ausgeführt werden. Es ist außerdem möglich, dass zumindest einer der Arbeitsschritte, nämlich das Kalottieren oder eine der Perforationen in zeitliche Abschnitte unterteilt ist, die aufeinanderfolgend an dem Blechteil ausgeführt werden. Dies hat den Vorteil, dass für bestimmte Ausführungen lediglich ein einfacheres Werkzeug erstellt werden muss, was aus Kostengründen günstig sein kann.According to a further embodiment of the invention, it is provided that 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. In order to accelerate the process and to position it more precisely, it can be advantageous for the work steps of capping and perforation on the peaks to be carried out simultaneously. It is also possible for 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.

Die Öffnungen der Arbeitsschritte des Perforierens können auf unterschiedliche Weise erzeugt werden, beispielsweise durch Lochen oder Stanzen. Diese Verfahrensarten ermöglichen unterschiedliche Formen der Öffnungen, beispielweise rund oder eckig oder auch beliebig geformt. Solche gestanzten oder gelochten Öffnungen haben zweckmäßigerweise einen Durchmesser ≥ 0,5 mm. Erfindungsgemäß ist vorgesehen, durch Einstechen mit Nadeln Öffnungen in Form von Düsen zu erzeugen. Derartige Öffnungen können mit kleinerem Durchmesser hergestellt werden als gestanzte Löcher, wobei für die Düsen der zusätzlichen Perforation ein Durchmesser von 0,1 mm bis 0,3 mm, und für die Düsen der Perforation an den Kuppen ein Durchmesser von 0,3 mm bis 2,0 mm vorgesehen wird. Dabei ist es möglich, dass alle Düsen in die gleiche Richtung oder die Düsen in entgegengesetzte Richtung geformt werden. Auf diese Weise kann weiter den individuellen Anforderungen an das Blechteil Rechnung getragen werden. Eine weitere Ausführungsvariante des Verfahrens besteht darin, dass die Öffnungen der zusätzlichen Perforation und/oder die Öffnungen der Perforation an den Kuppen mit unterschiedlichen Abständen zwischen den Öffnungen hergestellt werden. Für die Perforation an den Kuppen bedeutet dies, dass nicht an jeder Kuppe eine Öffnung erzeugt wird, sondern beispielsweise in einem Bereich an jeder zweiten Kuppe und in einem anderen Bereich an jeder dritten Kuppe.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. It is possible that all nozzles are shaped in the same direction or the nozzles are shaped in the opposite direction. In this way, the individual requirements for the sheet metal part can also be taken into account. 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.

Als vorteilhaft wird angesehen, dass die Anzahl der Öffnungen der zusätzlichen Perforation mindestens ≥ 1/cm2 und maximal 36/cm2 beträgt und der Abstand der Öffnungen dieser Perforation ≥ 1mm beträgt. Eine weitere Variationsmöglichkeit zur Herstellung des Blechteils besteht darin, dass die Form der durch Kalottierung hergestellten Kuppenanordnung bezüglich des Abstands der Kuppen zueinander und/oder der Kuppenhöhe variabel ist. Die Dicke des Ausgangsmaterials des Blechteils ist vorzugsweise 0,01 mm bis 1,0 mm. Auch ist es möglich, die Kuppen gerundet oder abgeflacht zu erzeugen. Die Arbeitsschritte des erfindungsgemäßen Verfahrens werden zweckmäßigerweise in einer Presse durchgeführt. Als geeignetes Material für die Herstellung solcher Blechteile werden Metallwerkstoffe in Betracht gezogen bzw. Stahl, Edelstahl beispielsweise der Werkstoff Nummer 1.4301, 1.4541 oder 1.4828, Hochtemperaturstähle, wie sie unter der Handelsbezeichnung Inconel bekannt sind, Leichtmetalllegierungen aus Aluminium oder Magnesium sowie Kupfer, Messing oder Titan.It is considered advantageous that 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 .

Ausführungsbeispiele der Erfindung sind nachstehend anhand der Zeichnungen näher erläutert. In der Zeichnung zeigt:

Fig. 1
eine Draufsicht auf einen Ausschnitt eines Blechteils mit einer reliefartigen Oberfläche,
Fig. 2
einen Schnitt entlang der Linie II-II in Fig. 1,
Fig. 3
einen Schnitt entlang der Linie III-III in Fig. 1,
Fig. 4
eine vergrößerte Darstellung eines Schnittes, im Wesentlichen gemäß Fig. 3,
Fig. 5
eine alternative Ausführung zu Fig. 4,
Fig. 6
einen Ausschnitt einer Schnittdarstellung durch ein Blechteil mit einer Kontur einer alternierenden Kuppenanordnung und unterschiedlicher Perforation,
Fig. 7
einen Ausschnitt eines Schnitts durch ein Blechteil, bei dem durch die Perforationen jeweils Öffnungen in Form von Düsen sowie auch gestanzte oder gelochte Öffnungen erzeugt wurden,
Fig. 8
einen Ausschnitt eines Schnitts durch ein Blechteil mit in derselben Richtung als Düsen erzeugten Öffnungen,
Fig. 9
einen Ausschnitt eines Schnitts durch ein Blechteil mit Öffnungen in Form von entgegengesetzt gerichteten Düsen.
Embodiments of the invention are explained in more detail below with reference to the drawings. In the drawing shows:
Fig. 1
a top view of a section of a sheet metal part with a relief-like surface,
Fig. 2
a section along the line II-II in Fig. 1 ,
Fig. 3
a section along the line III-III in Fig. 1 ,
Fig. 4
an enlarged illustration of a section, essentially according to Fig. 3 ,
Fig. 5
an alternative version to Fig. 4 ,
Fig. 6
a section of a sectional view through a sheet metal part with a contour of an alternating tip arrangement and different perforations,
Fig. 7
a section of a section through a sheet metal part in which openings in the form of nozzles as well as punched or punched openings were created through the perforations,
Fig. 8
a section of a section through a sheet metal part with openings created in the same direction as nozzles,
Fig. 9
a section of a section through a sheet metal part with openings in the form of oppositely directed nozzles.

Die Fig. 1 zeigt die prinzipielle Anordnung einer alternierenden Kuppenanordnung in der Draufsicht auf einen Ausschnitt eines durch Kalottierung geformten Blechteils 1. Die Anordnung der Kuppen ist im gezeigten Beispiel regelmäßig, es ist jedoch auch möglich, ein unregelmäßiges Muster oder Bereiche mit unterschiedlichen Mustern zu erzeugen. Ebenso ist es möglich, bezogen auf die Fläche des Blechteils 1 lediglich partiell die Kalottierung auszuführen, so dass die Kuppenanordnung nur in bestimmten Bereichen des Blechteils 1 vorgesehen ist.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.

Als Ausgangsmaterial des Blechteils kann ein Band, ein Tafelblech oder eine Platine dienen, wobei die Platine mittels eines Schnittwerkzeugs, einer Schere oder einem Laser aus dem Blechband oder dem Tafelblech geschnitten wird. Das Blech weist vorzugsweise eine Dicke von 0,01 mm bis 1,0 mm auf.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.

Die Fig. 2 zeigt einen Schnitt des Blechteils 1 entlang der Linie II-II in Fig. 1, woraus die durch die Kalottierung erzeugte Oberfläche einer Kuppenanordnung mit nach oben gerichteten Kuppen 2 deutlich wird. Zwei aus der Blechebene E nach oben gerichtete, benachbarte Kuppen 2, sind in einem Abstand a angeordnet, dazwischen befindet sich ein auf die Blechebene E reichender Abschnitt. Links in Fig. 2 haben die Kuppen 2 eine runde Form, wohingegen rechts in Fig. 2 eine Variante mit flachem Kuppendach gezeigt ist. Auch andere Formen der Kuppen sind möglich.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.

Die Fig. 3 zeigt einen Schnitt durch das Blechteil 1 entlang der Linie III-III in Fig. 1, also in diagonaler Richtung, wobei in dieser Schnittebene die benachbarten, nach oben gerichteten Kuppen 2 einen Abstand b aufweisen. Zwischen zwei Kuppen 2 befindet sich eine nach unten gerichtete Kuppe 3, wodurch die alternierende Kuppenanordnung gegeben ist. Im Ausführungsbeispiel der Fig. 3 sind die nach oben gerichteten Kuppen 2 bezogen auf die Blechebene E etwas ausgeprägter als die nach unten gerichteten Kuppen 3. Die durch die Kalottierung erzeugte Ausprägung auf beiden Seiten der Blechebene E ist im gezeigten Ausführungsbeispiel regelmäßig, es sind jedoch auch andere Formen möglich. Links in Fig. 3 haben die Kuppen 2, 3 eine runde Form, rechts sind die Kuppen 2, 3 abgeflacht dargestellt.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.

Die Fig. 4 zeigt eine vergrößerte Darstellung eines Schnittes durch das Blechteil 1, die im Wesentlichen der Fig. 3 entspricht, allerdings mit etwas weniger ausgeprägten
Kuppen 2 und 3, die alternierend zur Blechebene E ausgebildet sind. Mit S ist die Blechdicke bezeichnet, die zwischen 0,01 mm und 1,0 mm beträgt. Die gesamte Ausprägung, also zu beiden Seiten der Blechebene E ist als Prägehöhe h bezeichnet. Es ist darauf hinzuweisen, dass sich die Prägehöhe h nicht symmetrisch zur Blechebene E erstrecken muss, sondern auch zu dieser verschoben sein kann. Links in Fig. 4 sind die Kuppen 2, 3 rund und rechts in Fig. 4 sind die Kuppen 2, 3 flach.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.

Die Fig. 5 zeigt eine alternative Ausführung des Blechteils 1, wobei bezogen auf die Blechebene E die Kuppen 2 nur auf einer Seite herausgeformt sind. Die Figuren 4 und 5 zeigen das kalottierte Blechteil 1 vor dem Erzeugen von Öffnungen durch die Perforation.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.

Die Fig. 6 zeigt in vergrößerter Darstellung einen Ausschnitt eines Schnitts durch das Blechteil 1 mit durch die zusätzliche Perforation erzeugten Öffnungen 4 und 5 im linken Abschnitt und durch Perforation an Kuppen 2, 3 erzeugten Öffnungen 6 bzw. 7 in der Mitte und im rechten Abschnitt. Außerdem ist das Blechteil 1 durch Kalottierung in eine Kontur mit einer alternierenden Kuppenanordnung aus nach oben gerichteten Kuppen 2 und nach unten gerichteten Kuppen 3 gebracht. Die Öffnungen 4 sind als Düse geformt und weisen einen Durchmesser von 0,1 mm bis 0,3 mm auf. Die Öffnungen 5 sind gestanzt oder gelocht mit einem Durchmesser ≥ 0,5 mm in beliebiger Form. Für die Perforation an den Kuppen 2, 3 können Öffnungen 6 in Form von Düsen oder als Öffnung 7 durch Stanzen oder Lochen hergestellt werden. Die Öffnungen 6 und 7 sind grundsätzlich an der höchsten Stelle einer Kuppe 2 angeordnet, wobei auch die unteren Kuppen 3 mit Öffnungen versehen werden können, falls dies erforderlich ist. Die Öffnungen 7 können beispielsweise einen Durchmesser > 0,5 mm aufweisen, wobei die Form außer rund auch eckig oder beliebig sein kann. Dagegen liegt der Durchmesser der Öffnungen 6 im Bereich von 0,3 mm bis 2,0 mm. Die Öffnungen 6 und 7 werden jeweils gleichzeitig mit oder nach dem Kalottieren zur Bildung der Kuppenanordnung eingebracht.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. In addition, 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. For the perforation at the peaks 2, 3, 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.

Die Düsenform der Öffnungen 4 und 6 kann je nach Form des Werkzeugs unterschiedlich sein, wobei runde oder eckige oder auch ovale Querschnitte möglich sind. Der Winkel a, den die Düsenwände einschließen, liegt vorzugsweise im Bereich von 10° bis 60°, insbesondere 30°.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 α enclosed by the nozzle walls is preferably in the range from 10 ° to 60 °, in particular 30 °.

Die Fig. 7 zeigt einen Ausschnitt eines Schnittes durch ein Blechteil 1 mit einer durch Kalottierung erzeugten Oberfläche sowie beiden Perforationen. Die zusätzliche Perforation bildet Öffnungen 4, die in Form von Düsen hergestellt sind, mit einem Durchmesser von 0,1 mm bis 0,3 mm, wobei die Achsrichtung der Düsen 4 unterschiedlich ist, je nach der Position im kalottierten Blechteil. Die zusätzliche Perforation kann anstelle der Düsen 4 oder auch zusätzlich zu diesen gestanzte oder gelochte Öffnungen 5 bilden, wie dies bereits zu Fig. 6 beschrieben ist. Die Perforation an den Kuppen in Fig. 7 bildet Öffnungen 6 in Form von Düsen mit einem Durchmesser von 0,3 mm bis 2,0 mm oder gestanzte oder gelochte Öffnungen 7, wobei die Öffnungen 6 und/oder 7 an der höchsten Stelle der Kuppe 2 angeordnet sind. Die zusätzliche Perforation erfolgt vor dem Kalottieren, die Perforation an den Kuppen kann gleichzeitig mit dem Kalottieren oder anschließend erfolgen.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. The perforation at the crests in Fig. 7 forms 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.

Die Fig. 8 zeigt einen Ausschnitt eines Schnittes durch ein Blechteil 1, wobei der Einfachheit halber lediglich die durch Kalottierung erzeugte reliefartige Oberfläche und die durch die Perforation an den Kuppen gebildeten Öffnungen 6 in Form von Düsen gezeigt sind. Die Öffnungen 6 befinden sich an der höchsten Stelle der jeweiligen Kuppen 2, 3, wobei diese Düsen der Öffnungen 6 in dieselbe Richtung geformt sind. Eine alternative Ausführung des Blechteils 1 ist in Fig. 9 gezeigt, bei dem die Düsen der Öffnungen 6 entgegengesetzt gerichtet sind.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.

Claims (11)

  1. Method for producing a sheet metal part (1) having several openings (4, 5, 6, 7) and a relief-like surface, the sheet metal part (1) being deformed by providing that
    a) in a working step a calotting is performed, whereby a contour with a dome arrangement is formed from the sheet metal plane (E), the dome arrangement being made on one side of the sheet metal plane (E) or alternatingly,
    b) in a working step the sheet metal part (1) is provided with a perforation and the perforation is produced at the same time or after the calotting, the openings being produced at the highest point of domes (2, 3) of the dome arrangement
    characterised in that the diameter of said openings (6, 7) ≥ 0.3 mm and
    c) in that in a working step the sheet metal part (1) is provided with an additional perforation, wherein the diameter of said openings (4, 5) ≥ 0.1 mm, wherein said perforation is produced before the calotting, wherein said openings (4) of the additional perforation are produced with a diameter of 0.1 mm to 0.3 mm and the openings (6) of the perforation at the domes (2, 3) are produced with a diameter of 0.3 mm to 2.0 mm, and in that the openings (6) at the domes (2, 3) and/or the openings (4) of the additional perforation are formed to produce nozzles.
  2. Method according to claim 1,
    characterised in that the nozzles (6) are formed in opposite directions.
  3. Method according to claim 1,
    characterised in that the nozzles (4, 6) are formed in the same direction.
  4. Method according to claim 1,
    characterised in that the openings (4, 5) of the additional perforation and/or the openings (6, 7) of the perforation at the domes (2, 3) are produced with different spacing.
  5. Method according to claim 1,
    characterised in that the number of the openings (4, 5) of the additional perforation is at least ≥ 1/cm2 and no more than 36/cm2.
  6. Method according to any of claims 1 to 5,
    characterised in that the distance between the openings (4, 5) of the additional perforation is ≥ 1 mm.
  7. Method according to any of claims 1 to 6,
    characterised in that the shape of the dome arrangement produced by calotting is variable in terms of the spacing of the domes (2, 3) and/or the dome height.
  8. Method according to any of claims 1 to 7,
    characterised in that the working steps a) to c) are performed in a press.
  9. Method according to claim 1,
    characterised in that at least one of the working steps, i.e. the calotting or one of the perforations, is performed only partially with respect to the area of the sheet metal part (1).
  10. Method according to claim 1,
    characterised in that the working steps of calotting and perforation at the domes (2, 3) are performed simultaneously.
  11. Method according to any of claims 1 to 7,
    characterised in that an angle (α) enclosed by nozzle walls is 10° to 60°, in particular 30°.
EP13000852.7A 2013-02-20 2013-02-20 Method for producing a sheet metal part Active EP2769780B1 (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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EP2769780B1 true EP2769780B1 (en) 2020-11-18

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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 (en) * 1994-04-12 1996-03-27 Goldau Ursula Pallet made of sheet metal.
JP4345578B2 (en) * 2004-05-31 2009-10-14 株式会社デンソー Plate material press working equipment
DE102006062189B4 (en) * 2006-12-22 2009-03-19 Dr. Mirtsch Gmbh Method for producing a structured material web for the passage of fluid media, structured material web and use thereof

Non-Patent Citations (1)

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

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