EP2881191B1 - Forming device and method for producing connection protrusions - Google Patents

Forming device and method for producing connection protrusions Download PDF

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Publication number
EP2881191B1
EP2881191B1 EP14003976.9A EP14003976A EP2881191B1 EP 2881191 B1 EP2881191 B1 EP 2881191B1 EP 14003976 A EP14003976 A EP 14003976A EP 2881191 B1 EP2881191 B1 EP 2881191B1
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EP
European Patent Office
Prior art keywords
shaping
reinforcing element
pressure wave
reinforcing
coil
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EP14003976.9A
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German (de)
French (fr)
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EP2881191A1 (en
Inventor
Jürgen Silvanus
Michael JÜRGENS
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Airbus Defence and Space GmbH
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Airbus Defence and Space GmbH
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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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/06—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/10—Incompletely punching in such a manner that the parts are still coherent with 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/14—Dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/26—Perforating by non-mechanical means, e.g. by fluid jet

Definitions

  • the invention relates to a forming device and a corresponding method for producing connecting lugs, in particular to reinforcing elements (see, eg DE-A-10 2009 047671 ).
  • carbon fiber reinforced plastic materials are increasingly being used because they have very good in-plane mechanical properties along with fiber extension and, in addition, are very lightweight, making them very attractive for aerospace applications.
  • these fiber-reinforced plastics are not used as the sole material in, for example, aircraft, but there are still components in which metals or metal alloys serve as reinforcement.
  • connecting projections for example in the form of pins, are attached to reinforcing elements, such as reinforcing plates, on at least one broad side of the reinforcing plate, which can then be embedded in a fibrous structure and then hardened on hardening of a matrix material with which the fibrous structure is impregnated. can form a mechanical connection between the matrix material and the reinforcing sheet.
  • certain metallic materials and alloys are also very attractive for such applications because of their mechanical properties. These include, for example, AlMgSc alloys, magnesium or titanium, as well as high-strength steels. In particular, with these materials, however, it is difficult to produce in a simple method the connection approaches for later connection with the matrix material of the fiber structure.
  • connection approaches by a so-called “cold-metal transfer” to weld metallic surfaces.
  • connection approaches can also be produced by sintering to the surface of the desired reinforcement plate (cf. PN Parkes, "Growth of damage in additively manufactured metal-composite joints", ECCM15, (2012 )).
  • connection lugs are punched out of cut-to-size reinforcing sheets and then the sheets are bent into shape.
  • the punching as a forming process is limited in materials that are not suitable for such a transformation possible; Especially with alloys such as AlMgSc, or magnesium or titanium, this process can be difficult to achieve because these materials would break during forming.
  • the object of the invention is therefore to propose an improved forming device or an improved method for producing connecting lugs on reinforcing elements.
  • a forming device for producing connecting lugs on reinforcing elements has at least one pressure wave generating device for generating at least one pressure wave directed onto a first broad side of a reinforcing element and a mask device to be arranged on a second broad side of the reinforcing element opposite the first broad side, wherein the mask device is formed with a molding block having shaped recesses for producing predetermined connection attachment shapes.
  • a reinforcing plate to be deformed is then arranged between the pressure wave generating device and the mask device as a reinforcing element and then a pressure wave is exerted on the reinforcing plate, the reinforcing plate deforms in the direction of the oppositely arranged mask device. Since this mask device is basically formed as a block, the reinforcing plate nestles against the block shape. In addition, the mask device has recesses, so that when nestling of the reinforcing plate to the mold block via the pressure wave regions of the reinforcing plate are driven into the recesses. Thus, protrusions are formed in the reinforcing sheet, which can then be used as connection lugs for connecting the reinforcing sheet to a CFRP matrix material.
  • the connecting lugs and the recesses are formed in the mold block. They may for example be wedge-shaped, cuboid, pyramidal, conical or cylindrical.
  • the pressure wave generating device is designed to generate pressure wave pulses with a predetermined pulse length and with a predetermined interval of the pulses.
  • the reinforcing member is advantageously deformed more.
  • pulsating the deformation forces can advantageously be achieved stepwise and preferably gentle material deformation of the reinforcing element.
  • a short pulse length of about 5 Hz to 13 Hz is used, so that an advantageous pressure wave with a power between 1000 Joule and 5000 Joule can be exercised without the reinforcing element ruptures.
  • the pressure wave generating device is formed with a coil device with at least one coil. It is advantageous that the reinforcing element deformed by a magnetic pulse.
  • the coil preferably applies a magnetic pulse with a very high intensity, so that advantageously the required forming pressure for forming the reinforcing element can be achieved.
  • the coil device has a plurality of coils, in particular coils with different geometries, which are arranged side by side.
  • a high intensity magnetic field is advantageous to the required forming pressure to reach the reinforcing element.
  • high-intensity magnetic fields are usually achieved only in a limited dimensional range. Therefore, it is advantageous if, in order to reshape larger surfaces of, for example, reinforcing plates, a plurality of coils are arranged in the coil device, which preferably generate the necessary high-intensity magnetic field in their region. Thus, it is advantageously possible to reshape a larger area of the reinforcing element as desired.
  • the coils additionally advantageously have different geometries, it is also possible to generate different three-dimensional geometries in the reinforcement element at different positions.
  • the mold block for forming a surface of a reinforcing member is formed into a predetermined three-dimensional shape.
  • large-area molds such as, for example, an L-shape or a J-shape, can also be advantageously produced in addition to the connecting extensions in the reinforcing element.
  • a positioning device for changing the relative position of the coil means and the reinforcing member and / or for changing the relative position of the molding block and the reinforcing member is provided.
  • the reinforcing element itself is displaced by the positioning, so as to be deformed at different locations.
  • the forming device has a cutting device for trimming the reinforcing element during the forming.
  • the reinforcing element has this not only advantageous the desired Form and the desired connection approaches, but is also limited to a predetermined advantageous extent. If the cutting of the reinforcing element is carried out simultaneously with the shaping into the desired shape or for the formation of the connecting lugs, the preparation of the reinforcing element for further use can preferably be carried out in a single step.
  • a control device is provided, which is provided for driving the positioning device and / or the pressure wave generating device and / or the cutting device.
  • the reinforcing element can preferably be brought into its desired shape with the desired connection lugs fully automatically.
  • the forming device is used for producing connecting lugs on reinforcing elements, which are formed from alloys, in particular AlMgSc, and / or Mg and / or Ti.
  • a coil device is provided as the pressure wave generating device, which has in particular a plurality of coils arranged next to one another.
  • a mask device is provided with a mold block having recesses formed to produce predetermined bond attachment shapes and / or having a three-dimensionally shaped surface.
  • step d the relative position of the reinforcing element and the mask device and / or of the reinforcing element and coil device is advantageously changed, after which at least one pressure wave is generated in the direction of the reinforcing element.
  • the reinforcing element is provided with material formed from alloys, in particular AlMgSc, and / or Mg and / or Ti.
  • Fig. 1 shows a forming device 10, with which on a surface 12 of a reinforcing element 14, in the present example, a reinforcing plate, connecting lugs 16 can be formed.
  • the forming device 10 has a pressure wave generating device 18 and a mask device 20. Furthermore, a positioning device 22 for changing the relative position of the reinforcement plate 14 to the pressure wave generation device 18 or the mask device 20 is provided. The forming device 10 further has a cutting device 24 for trimming the reinforcing sheet 14. Pressure wave generating device 18, positioning device 22 and cutting device 24 are controlled by a control device 26.
  • the mask device 20 has a plurality of recesses 28 in a mold block 30, which in the present embodiment in Fig. 1 are formed semicircular.
  • the pressure wave generating device 18 is formed by a coil device 32, which is formed in the present embodiment with a coil 34.
  • a reinforcing element 14 made of an alloy 36, such as AlMgSc 38, or Mg 40 or Ti 42 is positioned between the coil device 32 and the mask device 20 such that the coil device 32 is positioned on a first broad side 44 of the reinforcing element 14 and the mask device 20 is arranged on a second broad side 46 of the reinforcing element 14.
  • the reinforcing element 14 is pushed by the positioning device 22 between the mask device 20 and the coil device 32.
  • control device 26 outputs a signal to the coil device 32, so that a magnetic pulse or a series of magnetic pulses are exerted, which ensure that the reinforcing element 14 conforms to the shape of the mask device 20, so that in the region of Recesses 28 form the connection lugs 16.
  • control device 26 can also deliver a signal to the cutting device 24, so that it cuts the reinforcing element 14 to the desired length.
  • Fig. 2 shows one to the in Fig. 1 shown forming device 10 analog forming device 10, but wherein the recesses 28 in the mold block 30 have a different shape, namely cuboid instead of semicircular.
  • Fig. 3 shows a further embodiment of the forming apparatus 10, wherein the mold block 30 has a three-dimensional shape 48, which then also assumes the reinforcing element 14 during the forming process.
  • the molding block 30 can, for example, be curved or predetermine an L-shape or a J-shape or other conceivable three-dimensional shapes 48.
  • a forming apparatus 10 in which the coil means 32 comprises a plurality of coils 34 which are arranged along a longitudinal extent 50 of the reinforcing element 14.
  • the coil means 32 comprises a plurality of coils 34 which are arranged along a longitudinal extent 50 of the reinforcing element 14.
  • Positioning device 22 shown can move both the reinforcing element 14 and the mask device 20 and the coil device 32.
  • Fig. 5 and Fig. 6 show views of the finished molded reinforcing element 14, wherein Fig. 5 a plan view of the reinforcing element 14 and in Fig. 6 a side view of the reinforcing element 14 can be seen.
  • connecting projections 16 were formed with a cuboid shape, which are arranged on the surface 12 of the reinforcing element 14.
  • reinforcing elements 14 are produced in several and different manufacturing steps and each of these manufacturing steps requires a special tool and a certain process time.
  • connection projections 16 are welded to the surface 12 of the reinforcement sheets 14. This process also has a high number of process steps, which results in a long process time. In addition, there is the problem of the precision of this method.
  • reinforcing plates 14 by means of pressure waves.
  • both the reinforcing plate 14 cut as well as be transformed. So it is a total reduction of manufacturing costs by reducing the manufacturing steps possible.
  • the use of pressure waves also makes it possible to reshape high-strength and tear-resistant materials. As a result, the criterion formability no longer limits the material selection.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Description

Die Erfindung betrifft eine Umformvorrichtung sowie ein entsprechendes Verfahren zum Erzeugen von Verbindungsansätzen, insbesondere an Verstärkungselementen (siehe z.B. DE-A-10 2009 047671 ).The invention relates to a forming device and a corresponding method for producing connecting lugs, in particular to reinforcing elements (see, eg DE-A-10 2009 047671 ).

Beispielsweise in der Luftfahrttechnik werden vermehrt kohlenstofffaserverstärkte Kunststoffmaterialien verwendet, da sie sehr gute mechanische Eigenschaften in der Ebene bzw. entlang der Fasererstreckung aufweisen und zusätzlich sehr leichtgewichtig sind, was sie für die Anwendung in der Luftfahrt sehr attraktiv macht. Allerdings werden diese faserverstärkten Kunststoffe nicht als alleiniges Material in beispielsweise Luftfahrzeugen eingesetzt, sondern es existieren weiterhin Bauteile bei denen Metalle bzw. Metalllegierungen als Verstärkung dienen.For example, in aerospace technology, carbon fiber reinforced plastic materials are increasingly being used because they have very good in-plane mechanical properties along with fiber extension and, in addition, are very lightweight, making them very attractive for aerospace applications. However, these fiber-reinforced plastics are not used as the sole material in, for example, aircraft, but there are still components in which metals or metal alloys serve as reinforcement.

Um beide Materialtypen in beispielsweise einem Luftfahrzeug gemeinsam einsetzen zu können, besteht die Notwendigkeit, die Materialien zu fügen. Um dies zu ermöglichen, werden an Verstärkungselementen wie beispielsweise Verstärkungsblechen Verbindungsansätze, beispielsweise in Form von Pins, an wenigstens einer Breitseite des Verstärkungsbleches, angebracht, die dann in eine Faserstruktur eingebettet werden können und dann beim Aushärten eines Matrixmaterials, mit dem die Faserstruktur getränkt wird, eine mechanische Verbindung zwischen dem Matrixmaterial und dem Verstärkungsblech bilden können.In order to use both types of material together in, for example, an aircraft, there is a need to add the materials. In order to make this possible, connecting projections, for example in the form of pins, are attached to reinforcing elements, such as reinforcing plates, on at least one broad side of the reinforcing plate, which can then be embedded in a fibrous structure and then hardened on hardening of a matrix material with which the fibrous structure is impregnated. can form a mechanical connection between the matrix material and the reinforcing sheet.

Neben faserverstärkten Bauteilen sind auch bestimmte metallische Materialien und Legierungen aufgrund ihrer mechanischen Eigenschaften für solche Anwendungen sehr attraktiv. Dazu gehören beispielsweise AlMgSc-Legierungen, Magnesium bzw. Titan, als auch hochfeste Stähle. Insbesondere bei diesen Materialien ist es jedoch schwierig, in einfacher Methodik die Verbindungsansätze zur späteren Verbindung mit dem Matrixmaterial der Faserstruktur zu erzeugen.In addition to fiber-reinforced components, certain metallic materials and alloys are also very attractive for such applications because of their mechanical properties. These include, for example, AlMgSc alloys, magnesium or titanium, as well as high-strength steels. In particular, with these materials, however, it is difficult to produce in a simple method the connection approaches for later connection with the matrix material of the fiber structure.

Diese Verfahren sind sehr aufwendig, da viele Prozessschritte durchgeführt werden müssen, wie Bereitstellen eines zurechtgeschnittenen und geformten Verstärkungsbleches und dann schrittweises Anschweißen bzw. Ansintern der Verbindungssätze an dessen Oberfläche.These methods are very expensive, since many process steps have to be performed, such as providing a trimmed and shaped reinforcing sheet and then stepwise welding or sintering the connection sets to the surface thereof.

Bekannt ist es beispielsweise aus S. Ucsnik, "Experimental Investigation of a novel hybrid Metal-Composite Joining Technology", Composites Part A: Applied Science and Manufacturing, (2009 ), die Verbindungsansätze durch einen sogenannten "Cold-metal transfer" an metallische Oberflächen anzuschweißen. Alternativ können die Verbindungsansätze auch durch Ansintern an die Oberfläche des gewünschten Verstärkungsbleches erzeugt werden (vgl. P. N. Parkes, "Growth of damage in additively manufactured metal-composite joints", ECCM15, (2012 )).It is known for example from S. Ucsnik, "Experimental Investigation of a Novel Hybrid Metal Composite Joining Technology", Composites Part A: Applied Science and Manufacturing, (2009 ), the connection approaches by a so-called "cold-metal transfer" to weld metallic surfaces. Alternatively, the connection approaches can also be produced by sintering to the surface of the desired reinforcement plate (cf. PN Parkes, "Growth of damage in additively manufactured metal-composite joints", ECCM15, (2012 )).

Es ist auch eine alternative Methode bekannt, bei der Verbindungsansätze aus zurechtgeschnittenen Verstärkungsblechen ausgestanzt werden und dann die Bleche zurechtgebogen werden. Das Ausstanzen als Umformprozess ist jedoch nur begrenzt bei für eine solche Umformung wenig geeigneten Materialien möglich; insbesondere bei Legierungen wie AlMgSc, oder Magnesium bzw. Titan kann dieses Verfahren nur schwer realisiert werden, da diese Materialien beim Umformen reißen würden.There is also known an alternative method in which connection lugs are punched out of cut-to-size reinforcing sheets and then the sheets are bent into shape. However, the punching as a forming process is limited in materials that are not suitable for such a transformation possible; Especially with alloys such as AlMgSc, or magnesium or titanium, this process can be difficult to achieve because these materials would break during forming.

Aus der nicht veröffentlichten deutschen Patentanmeldung "Kaltumformverfahren und Umformvorrichtung zum Kaltumformen" der Anmelderin sind eine Vorrichtung und ein Verfahren bekannt, mit denen länglichen Werkstücke umgeformt werden können.From the unpublished German patent application "Kaltumformverfahren and Umformvorrichtung for cold forming" of the applicant, an apparatus and a method are known with which elongate workpieces can be transformed.

Aufgabe der Erfindung ist es daher, eine verbesserte Umformvorrichtung bzw. ein verbessertes Verfahren zum Erzeugen von Verbindungsansätzen an Verstärkungselementen vorzuschlagen.The object of the invention is therefore to propose an improved forming device or an improved method for producing connecting lugs on reinforcing elements.

Diese Aufgabe wird durch eine Umformvorrichtung mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a forming device having the features of claim 1.

Eine Verwendung der Umformvorrichtung zum Erzeugen von Verbindungsansätzen bei speziellen Materialien, sowie ein Umformverfahren zum Erzeugen von Verbindungsansätzen an Verstärkungselementen sind Gegenstand der nebengeordneten Ansprüche 9 und 11.A use of the forming device for producing connecting lugs in special materials, as well as a forming method for producing connecting lugs on reinforcing elements are the subject of the independent claims 9 and 11.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der abhängigen Ansprüche.Advantageous embodiments of the invention are the subject of the dependent claims.

Eine Umformvorrichtung zum Erzeugen von Verbindungsansätzen an Verstärkungselementen weist wenigstens eine Druckwellenerzeugungseinrichtung zum Erzeugen wenigstens einer auf eine erste Breitseite eines Verstärkungselements gerichteten Druckwelle sowie eine an einer der ersten Breitseite gegenüberliegenden zweiten Breitseite des Verstärkungselements anzuordnenden Maskeneinrichtung auf, wobei die Maskeneinrichtung mit einem Formblock ausgebildet ist, der zum Erzeugen vorbestimmter Verbindungsansatzformen geformte Ausnehmungen aufweist.A forming device for producing connecting lugs on reinforcing elements has at least one pressure wave generating device for generating at least one pressure wave directed onto a first broad side of a reinforcing element and a mask device to be arranged on a second broad side of the reinforcing element opposite the first broad side, wherein the mask device is formed with a molding block having shaped recesses for producing predetermined connection attachment shapes.

Wird nun beispielsweise als Verstärkungselement ein zu verformendes Verstärkungsblech zwischen der Druckwellenerzeugungseinrichtung und der Maskeneinrichtung angeordnet und dann eine Druckwelle auf das Verstärkungsblech ausgeübt, verformt sich das Verstärkungsblech in Richtung auf die gegenüberliegend angeordnete Maskeneinrichtung. Da diese Maskeneinrichtung grundsätzlich als Block ausgebildet ist, schmiegt sich das Verstärkungsblech an die Blockform an. Zusätzlich weist die Maskeneinrichtung Ausnehmungen auf, so dass beim Anschmiegen des Verstärkungsbleches an den Formblock über die Druckwelle Bereiche des Verstärkungsbleches in die Ausnehmungen hineingetrieben werden. So bilden sich Vorsprünge in dem Verstärkungsblech aus, die dann als Verbindungsansätze zum Verbinden des Verstärkungsbleches mit einem CFK-Matrixmaterial verwendet werden können.If, for example, a reinforcing plate to be deformed is then arranged between the pressure wave generating device and the mask device as a reinforcing element and then a pressure wave is exerted on the reinforcing plate, the reinforcing plate deforms in the direction of the oppositely arranged mask device. Since this mask device is basically formed as a block, the reinforcing plate nestles against the block shape. In addition, the mask device has recesses, so that when nestling of the reinforcing plate to the mold block via the pressure wave regions of the reinforcing plate are driven into the recesses. Thus, protrusions are formed in the reinforcing sheet, which can then be used as connection lugs for connecting the reinforcing sheet to a CFRP matrix material.

Je nach gewünschter Endform der Verbindungsansätze sind auch die Ausnehmungen im Formblock ausgebildet. Sie können beispielsweise keilförmig, quaderförmig, pyramidenförmig, kegelförmig oder zylindrisch ausgebildet sein.Depending on the desired end shape of the connecting lugs and the recesses are formed in the mold block. They may for example be wedge-shaped, cuboid, pyramidal, conical or cylindrical.

In bevorzugter Ausführungsform ist die Druckwellenerzeugungseinrichtung zum Erzeugen von Druckwellenimpulsen mit vorbestimmter Pulslänge und mit vorbestimmtem Abstand der Pulse ausgebildet. Bei jedem Druckwellenimpuls, der dann auf das Verstärkungselement ausgeübt wird, wird das Verstärkungselement vorteilhaft stärker verformt. Durch pulsierendes Aufbringen der Verformungskräfte kann vorteilhaft eine schrittweise und vorzugsweise materialschonende Verformung des Verstärkungselementes erzielt werden. Beispielsweise wird eine kurze Pulslänge von etwa 5 Hz bis 13 Hz verwendet, so dass eine vorteilhafte Druckwelle mit einer Leistung zwischen 1000 Joule und 5000 Joule ausgeübt werden kann, ohne dass das Verstärkungselement reißt.In a preferred embodiment, the pressure wave generating device is designed to generate pressure wave pulses with a predetermined pulse length and with a predetermined interval of the pulses. At each pressure wave pulse, which is then applied to the reinforcing member, the reinforcing member is advantageously deformed more. By pulsating the deformation forces can advantageously be achieved stepwise and preferably gentle material deformation of the reinforcing element. For example, a short pulse length of about 5 Hz to 13 Hz is used, so that an advantageous pressure wave with a power between 1000 Joule and 5000 Joule can be exercised without the reinforcing element ruptures.

Insbesondere können durch Ausüben einer Druckwelle auch Materialien verformt werden, bei denen bislang keine geeignete Möglichkeit zum Kaltumformen bekannt ist, beispielsweise Legierungsverstärkungselemente, Mg-Verstärkungselemente und/oder Ti-Verstärkungselemente.In particular, by applying a pressure wave, it is also possible to deform materials in which hitherto no suitable method for cold forming is known, for example alloy reinforcement elements, Mg reinforcement elements and / or Ti reinforcement elements.

Vorzugsweise ist die Druckwellenerzeugungseinrichtung mit einer Spuleneinrichtung mit wenigstens einer Spule gebildet. Es wird vorteilhaft das Verstärkungselement über einen Magnetimpuls verformt. Durch die Spule wird bevorzugt ein magnetischer Impuls mit sehr hoher Intensität aufgebracht, so dass vorteilhaft der erforderliche Umformdruck zum Umformen des Verstärkungselements erzielt werden kann.Preferably, the pressure wave generating device is formed with a coil device with at least one coil. It is advantageous that the reinforcing element deformed by a magnetic pulse. The coil preferably applies a magnetic pulse with a very high intensity, so that advantageously the required forming pressure for forming the reinforcing element can be achieved.

Vorzugsweise weist die Spuleneinrichtung mehrere Spulen, insbesondere Spulen mit unterschiedlichen Geometrien, auf, die nebeneinander angeordnet sind.Preferably, the coil device has a plurality of coils, in particular coils with different geometries, which are arranged side by side.

Zum Umformen von Verstärkungselementen mit magnetischen Impulsen ist ein Magnetfeld mit hoher Intensität vorteilhaft, um den erforderlichen Umformdruck auf dem Verstärkungselement zu erreichen. Hochintensive Magnetfelder werden zumeist jedoch nur in einem begrenzten Abmessungsbereich erzielt. Daher ist es vorteilhaft, wenn zum Umformen größerer Flächen von beispielsweise Verstärkungsblechen mehrere Spulen in der Spuleneinrichtung angeordnet werden, die vorzugsweise in ihrem Bereich das nötige hochintensive Magnetfeld erzeugen. So ist es vorteilhaft möglich, einen größeren Bereich des Verstärkungselements wie gewünscht umzuformen.To reshape reinforcing elements with magnetic pulses, a high intensity magnetic field is advantageous to the required forming pressure to reach the reinforcing element. However, high-intensity magnetic fields are usually achieved only in a limited dimensional range. Therefore, it is advantageous if, in order to reshape larger surfaces of, for example, reinforcing plates, a plurality of coils are arranged in the coil device, which preferably generate the necessary high-intensity magnetic field in their region. Thus, it is advantageously possible to reshape a larger area of the reinforcing element as desired.

Weisen die Spulen nun zusätzlich vorteilhaft unterschiedliche Geometrien auf, ist es weiter auch möglich, in dem Verstärkungselement an unterschiedlichen Positionen unterschiedliche dreidimensionale Geometrien zu erzeugen.If the coils additionally advantageously have different geometries, it is also possible to generate different three-dimensional geometries in the reinforcement element at different positions.

Bevorzugt ist der Formblock zum Formen einer Fläche eines Verstärkungselements in eine vorgegebene dreidimensionale Form ausgebildet. Gibt der Formblock vorteilhaft eine dreidimensionale Form vor, können neben den Verbindungsansätzen in dem Verstärkungselement auch vorteilhaft großflächige Formen, wie beispielsweise eine L-Form oder eine J-Form, erzeugt werden.Preferably, the mold block for forming a surface of a reinforcing member is formed into a predetermined three-dimensional shape. If the mold block is advantageously in the form of a three-dimensional mold, large-area molds, such as, for example, an L-shape or a J-shape, can also be advantageously produced in addition to the connecting extensions in the reinforcing element.

Vorzugsweise ist eine Positioniereinrichtung zum Verändern der Relativposition der Spuleneinrichtung und des Verstärkungselements und/oder zum Verändern der Relativposition des Formblockes und des Verstärkungselements vorgesehen. Es ist dabei denkbar, dass das Verstärkungselement selbst durch die Positioniereinrichtung verschoben wird, um so an unterschiedlichen Stellen verformt zu werden. Alternativ ist es jedoch auch möglich, den Formblock zu verschieben, insbesondere wenn mehrere Spulen auf der gegenüberliegenden Seite des Verstärkungselements angeordnet sind, um so an mehreren Positionen des Verstärkungselements die Verbindungsansätze bilden zu können. Weiter ist es auch möglich, lediglich die Spuleneinrichtung zu verschieben.Preferably, a positioning device for changing the relative position of the coil means and the reinforcing member and / or for changing the relative position of the molding block and the reinforcing member is provided. It is conceivable that the reinforcing element itself is displaced by the positioning, so as to be deformed at different locations. Alternatively, however, it is also possible to displace the mold block, in particular if a plurality of coils are arranged on the opposite side of the reinforcing element, so as to be able to form the connecting projections at a plurality of positions of the reinforcing element. Further, it is also possible to move only the coil means.

Vorzugsweise weist die Umformvorrichtung eine Schneideinrichtung zum Zurechtschneiden des Verstärkungselements während des Umformens auf. Zur Weiterverwendung des Verstärkungselements weist dieses nicht nur vorteilhaft die gewünschte Form und die gewünschten Verbindungsansätze auf, sondern ist auch auf eine vorbestimmte vorteilhafte Erstreckung begrenzt. Wird nun das Schneiden des Verstärkungselements gleichzeitig mit dem Umformen in die gewünschte Form bzw. zum Bilden der Verbindungsansätze durchgeführt, kann die Aufbereitung des Verstärkungselements zur Weiterverwendung vorzugsweise in einem einzigen Schritt durchgeführt werden.Preferably, the forming device has a cutting device for trimming the reinforcing element during the forming. For further use of the reinforcing element has this not only advantageous the desired Form and the desired connection approaches, but is also limited to a predetermined advantageous extent. If the cutting of the reinforcing element is carried out simultaneously with the shaping into the desired shape or for the formation of the connecting lugs, the preparation of the reinforcing element for further use can preferably be carried out in a single step.

In bevorzugter Ausführungsform ist eine Steuereinrichtung vorgesehen, die zum Ansteuern der Positioniereinrichtung und/oder der Druckwellenerzeugungseinrichtung und/oder der Schneidvorrichtung vorgesehen ist. Durch die Steuereinrichtung kann vorzugsweise vollautomatisch das Verstärkungselement in seine gewünschte Form mit den gewünschten Verbindungsansätzen gebracht werden.In a preferred embodiment, a control device is provided, which is provided for driving the positioning device and / or the pressure wave generating device and / or the cutting device. By virtue of the control device, the reinforcing element can preferably be brought into its desired shape with the desired connection lugs fully automatically.

Vorteilhaft wird die Umformvorrichtung zum Erzeugen von Verbindungsansätzen an Verstärkungselementen verwendet, die aus Legierungen, insbesondere AlMgSc, und/oder Mg und/oder Ti gebildet sind.Advantageously, the forming device is used for producing connecting lugs on reinforcing elements, which are formed from alloys, in particular AlMgSc, and / or Mg and / or Ti.

Ein Umformverfahren zum Erzeugen von Verbindungsansätzen an Verstärkungselementen weist die folgenden Schritte auf:

  1. a) Bereitstellen einer oben beschriebenen Umformvorrichtung, die eine Druckerzeugungseinrichtung und eine Maskeneinrichtung aufweist;
  2. b) Bereitstellen eines Verstärkungselements;
  3. c) Anordnen des Verstärkungselements zwischen Druckerzeugungseinrichtung und Maskeneinrichtung;
  4. d) Erzeugen wenigstens einer Druckwelle in Richtung auf das Verstärkungselement.
A forming method for producing connecting lugs on reinforcing elements comprises the following steps:
  1. a) providing a forming apparatus described above, comprising a pressure generating means and a mask means;
  2. b) providing a reinforcing element;
  3. c) arranging the reinforcing element between the pressure generating device and the mask device;
  4. d) generating at least one pressure wave in the direction of the reinforcing element.

Vorteilhaft wird als Druckwellenerzeugungseinrichtung eine Spuleneinrichtung bereitgestellt, die insbesondere mehrere nebeneinander angeordnete Spulen aufweist.Advantageously, a coil device is provided as the pressure wave generating device, which has in particular a plurality of coils arranged next to one another.

In besonders bevorzugter Ausführungsform wird eine Maskeneinrichtung mit einem Formblock mit zum Erzeugen vorbestimmter Verbindungsansatzformen geformten Ausnehmungen und/oder mit einer dreidimensional geformten Oberfläche bereitgestellt.In a particularly preferred embodiment, a mask device is provided with a mold block having recesses formed to produce predetermined bond attachment shapes and / or having a three-dimensionally shaped surface.

Vorteilhaft werden in Schritt d) mehrere Druckwellenimpulse nacheinander erzeugt.Advantageously, several pressure wave pulses are generated in succession in step d).

Vorteilhaft wird nach Schritt d) die Relativposition von Verstärkungselement und Maskeneinrichtung und/oder von Verstärkungselement und Spuleneinrichtung verändert, wonach wenigstens eine Druckwelle in Richtung auf das Verstärkungselement erzeugt wird.After step d), the relative position of the reinforcing element and the mask device and / or of the reinforcing element and coil device is advantageously changed, after which at least one pressure wave is generated in the direction of the reinforcing element.

Vorzugsweise wird das Verstärkungselement mit aus Legierungen, insbesondere AlMgSc, und/oder Mg und/oder Ti gebildetem Material bereitgestellt.Preferably, the reinforcing element is provided with material formed from alloys, in particular AlMgSc, and / or Mg and / or Ti.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der beigefügten Zeichnungen näher erläutert. Darin zeigt:

Fig. 1
eine Umformvorrichtung mit einer Spule und einer Maskeneinrichtung mit Ausnehmungen einer ersten Ausführungsform;
Fig. 2
die Umformvorrichtung aus Fig. 1, wobei die Maskeneinrichtung einen Formblock mit Ausnehmungen einer zweiten Ausführungsform aufweist;
Fig. 3
die Umformvorrichtung aus Fig. 2, wobei der Formblock eine dreidimensionale Form aufweist;
Fig. 4
eine Umformeinrichtung mit mehreren Spulen und einer Maskeneinrichtung;
Fig. 5
eine Draufsicht auf ein Verstärkungselement mit durch die Umformvorrichtung in Fig. 2 bis Fig. 4 erzeugten Verbindungsansätzen; und
Fig. 6
eine Seitenansicht auf das Verstärkungselement aus Fig. 5.
Embodiments of the invention will be explained in more detail with reference to the accompanying drawings. It shows:
Fig. 1
a forming device with a coil and a mask device with recesses of a first embodiment;
Fig. 2
the forming device Fig. 1 wherein the mask means comprises a mold block having recesses of a second embodiment;
Fig. 3
the forming device Fig. 2 wherein the mold block has a three-dimensional shape;
Fig. 4
a forming device with a plurality of coils and a mask device;
Fig. 5
a plan view of a reinforcing element with by the forming in Fig. 2 to Fig. 4 generated connection approaches; and
Fig. 6
a side view of the reinforcing element Fig. 5 ,

Fig. 1 zeigt eine Umformvorrichtung 10, mit der an einer Oberfläche 12 eines Verstärkungselements 14, im vorliegenden Beispiel ein Verstärkungsblech, Verbindungsansätze 16 gebildet werden können. Fig. 1 shows a forming device 10, with which on a surface 12 of a reinforcing element 14, in the present example, a reinforcing plate, connecting lugs 16 can be formed.

Die Umformvorrichtung 10 weist eine Druckwellenerzeugungseinrichtung 18 und eine Maskeneinrichtung 20 auf. Weiter ist eine Positioniereinrichtung 22 zum Verändern der Relativposition des Verstärkungsbleches 14 zu der Druckwellenerzeugungseinrichtung 18 bzw. der Maskeneinrichtung 20 vorgesehen. Die Umformvorrichtung 10 weist weiter eine Schneidvorrichtung 24 zum Zurechtschneiden des Verstärkungsbleches 14 auf. Druckwellenerzeugungseinrichtung 18, Positioniereinrichtung 22 und Schneideinrichtung 24 werden von einer Steuereinrichtung 26 angesteuert.The forming device 10 has a pressure wave generating device 18 and a mask device 20. Furthermore, a positioning device 22 for changing the relative position of the reinforcement plate 14 to the pressure wave generation device 18 or the mask device 20 is provided. The forming device 10 further has a cutting device 24 for trimming the reinforcing sheet 14. Pressure wave generating device 18, positioning device 22 and cutting device 24 are controlled by a control device 26.

Die Maskeneinrichtung 20 weist mehrere Ausnehmungen 28 in einem Formblock 30 auf, die in der vorliegenden Ausführungsform in Fig. 1 halbkegelförmig ausgebildet sind.The mask device 20 has a plurality of recesses 28 in a mold block 30, which in the present embodiment in Fig. 1 are formed semicircular.

Die Druckwellenerzeugungseinrichtung 18 ist durch eine Spuleneinrichtung 32 gebildet, die in der vorliegenden Ausführungsform mit einer Spule 34 gebildet ist.The pressure wave generating device 18 is formed by a coil device 32, which is formed in the present embodiment with a coil 34.

Es wird beispielsweise ein Verstärkungselement 14 aus einer Legierung 36, wie AlMgSc 38, oder aus Mg 40 oder aus Ti 42 derart zwischen die Spuleneinrichtung 32 und die Maskeneinrichtung 20 positioniert, dass die Spuleneinrichtung 32 auf einer ersten Breitseite 44 des Verstärkungselements 14 und die Maskeneinrichtung 20 auf einer zweiten Breitseite 46 des Verstärkungselements 14 angeordnet ist. Beispielsweise wird dazu das Verstärkungselement 14 von der Positioniereinrichtung 22 zwischen Maskeneinrichtung 20 und Spuleheinrichtung 32 geschoben.For example, a reinforcing element 14 made of an alloy 36, such as AlMgSc 38, or Mg 40 or Ti 42 is positioned between the coil device 32 and the mask device 20 such that the coil device 32 is positioned on a first broad side 44 of the reinforcing element 14 and the mask device 20 is arranged on a second broad side 46 of the reinforcing element 14. For example, for this purpose, the reinforcing element 14 is pushed by the positioning device 22 between the mask device 20 and the coil device 32.

Nun gibt die Steuereinrichtung 26 ein Signal an die Spuleneinrichtung 32 ab, so dass ein Magnetimpuls bzw. eine Folge von Magnetimpulsen ausgeübt werden, die dafür sorgen, dass sich das Verstärkungselement 14 an die Form der Maskeneinrichtung 20 anschmiegt, so dass sich in dem Bereich der Ausnehmungen 28 die Verbindungsansätze 16 bilden. Gleichzeitig kann die Steuereinrichtung 26 auch ein Signal an die Schneideinrichtung 24 abgeben, so dass diese das Verstärkungselement 14 auf die gewünschte Länge zurechtschneidet.Now, the control device 26 outputs a signal to the coil device 32, so that a magnetic pulse or a series of magnetic pulses are exerted, which ensure that the reinforcing element 14 conforms to the shape of the mask device 20, so that in the region of Recesses 28 form the connection lugs 16. At the same time, the control device 26 can also deliver a signal to the cutting device 24, so that it cuts the reinforcing element 14 to the desired length.

Fig. 2 zeigt eine zu der in Fig. 1 gezeigten Umformvorrichtung 10 analoge Umformvorrichtung 10, wobei jedoch die Ausnehmungen 28 in dem Formblock 30 eine andere Form aufweisen, nämlich quaderförmig statt halbkegelförmig. Fig. 2 shows one to the in Fig. 1 shown forming device 10 analog forming device 10, but wherein the recesses 28 in the mold block 30 have a different shape, namely cuboid instead of semicircular.

Fig. 3 zeigt eine weitere Ausführungsform der Umformvorrichtung 10, wobei der Formblock 30 eine dreidimensionale Form 48 aufweist, die dann das Verstärkungselement 14 während des Umformverfahrens ebenfalls annimmt. Der Formblock 30 kann hierzu beispielsweise gewölbt sein oder eine L-Form bzw. eine J-Form oder auch andere denkbare dreidimensionale Formen 48 vorgeben. Fig. 3 shows a further embodiment of the forming apparatus 10, wherein the mold block 30 has a three-dimensional shape 48, which then also assumes the reinforcing element 14 during the forming process. For this purpose, the molding block 30 can, for example, be curved or predetermine an L-shape or a J-shape or other conceivable three-dimensional shapes 48.

In Fig. 4 ist eine Umformvorrichtung 10 gezeigt, bei der die Spuleneinrichtung 32 mehrere Spulen 34 aufweist, die entlang einer Längserstreckung 50 des Verstärkungselements 14 angeordnet sind. So ist es möglich, auch über die Längserstreckung 50 des Verstärkungselements 14 mehrere Bereiche gleichzeitig umzuformen. Die in Fig. 4 gezeigte Positioniereinrichtung 22 kann sowohl das Verstärkungselement 14 als auch die Maskeneinrichtung 20 als auch die Spuleneinrichtung 32 verschieben.In Fig. 4 a forming apparatus 10 is shown in which the coil means 32 comprises a plurality of coils 34 which are arranged along a longitudinal extent 50 of the reinforcing element 14. Thus, it is possible to form several regions simultaneously over the longitudinal extent 50 of the reinforcing element 14. In the Fig. 4 Positioning device 22 shown can move both the reinforcing element 14 and the mask device 20 and the coil device 32.

Fig. 5 und Fig. 6 zeigen Ansichten des fertig geformten Verstärkungselements 14, wobei in Fig. 5 eine Draufsicht auf das Verstärkungselement 14 und in Fig. 6 eine Seitenansicht auf das Verstärkungselement 14 zu sehen ist. Mit Hilfe der Umformvorrichtung 10 wurden Verbindungsansätze 16 mit einer Quaderform gebildet, die an der Oberfläche 12 des Verstärkungselements 14 angeordnet sind. Fig. 5 and Fig. 6 show views of the finished molded reinforcing element 14, wherein Fig. 5 a plan view of the reinforcing element 14 and in Fig. 6 a side view of the reinforcing element 14 can be seen. With the help of the forming device 10 connecting projections 16 were formed with a cuboid shape, which are arranged on the surface 12 of the reinforcing element 14.

Bisher werden Verstärkungselemente 14 in mehreren und unterschiedlichen Fertigungsschritten produziert und jeder dieser Fertigungsschritte benötigt ein spezielles Werkzeug und eine gewisse Prozesszeit.So far, reinforcing elements 14 are produced in several and different manufacturing steps and each of these manufacturing steps requires a special tool and a certain process time.

Wegen ihrer mechanischen Eigenschaftsprofile attraktive Materialien scheiden für solche Anwendungen zumeist aus, da sie das Kriterium Umformbarkeit nicht vollständig erfüllen können.Because of their mechanical property profiles, attractive materials tend to be eliminated for such applications because they can not fully meet the criterion of formability.

Zum Herstellen von Verbindungsansätzen 16 sind bisher das sogenannte "Redundant High Efficiency Assembly (RHEA)" bekannt, bei dem die Verstärkungsbleche 14 zunächst geschnitten, dann gebogen und dann ausgestanzt werden, was eine große Anzahl an Prozessschritten und somit auch eine große Prozessdauer mit sich bringt. Weiter bekannt ist auch das sogenannte "Additive Layer Manufacturing", bei dem die Verbindungsansätze 16 an die Verstärkungsbleche 14 angesintert werden, was ebenfalls eine hohe Prozessdauer mit sich bringt. Es wurde auch das sogenannte "Cold Metal Transfer Welding" entwickelt, bei dem die Verbindungsansätze 16 an die Oberfläche 12 der Verstärkungsbleche 14 angeschweißt werden. Auch dieses Verfahren hat eine hohe Anzahl Prozessschritte, was eine lange Prozessdauer mit sich bringt. Zusätzlich besteht das Problem der Präzision dieses Verfahrens.To produce connecting lugs 16 so far the so-called "Redundant High Efficiency Assembly (RHEA)" are known in which the reinforcing plates 14 first cut, then bent and then punched out, which brings a large number of process steps and thus a large process time with it , Also known is the so-called "additive layer manufacturing", in which the connecting lugs 16 are sintered to the reinforcing plates 14, which also brings a high process time with it. The so-called "Cold Metal Transfer Welding" has also been developed in which the connection projections 16 are welded to the surface 12 of the reinforcement sheets 14. This process also has a high number of process steps, which results in a long process time. In addition, there is the problem of the precision of this method.

Daher wird nun vorgeschlagen, Verstärkungsbleche 14 mit Hilfe von Druckwellen zu fertigen. Dabei kann bei Nutzung von geeigneten Werkzeugen in einem Prozess sowohl das Verstärkungsblech 14 geschnitten als auch umgeformt werden. Es ist also insgesamt eine Verringerung des Fertigungsaufwandes durch Reduzierung der Fertigungsschritte möglich. Weiter ist es durch die Anwendung von Druckwellen auch möglich, hochfeste und anrissgefährdete Materialien umzuformen. Dadurch limitiert das Kriterium Umformbarkeit die Materialauswahl nicht mehr.Therefore, it is now proposed to manufacture reinforcing plates 14 by means of pressure waves. In this case, when using suitable tools in a process, both the reinforcing plate 14 cut as well as be transformed. So it is a total reduction of manufacturing costs by reducing the manufacturing steps possible. Furthermore, the use of pressure waves also makes it possible to reshape high-strength and tear-resistant materials. As a result, the criterion formability no longer limits the material selection.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

1010
Umformvorrichtungreshaping
1212
Oberflächesurface
1414
Verstärkungselementreinforcing element
1616
Verbindungsansatzconnecting shoulder
1818
DruckwellenerzeugungseinrichtungPressure wave generating device
2020
Maskeneinrichtungmask means
2222
Positioniereinrichtungpositioning
2424
Schneideinrichtungcutter
2626
Steuereinrichtungcontrol device
2828
Ausnehmungrecess
3030
Formblockmold block
3232
Spuleneinrichtungcoil device
3434
SpuleKitchen sink
3636
Legierungalloy
3838
AlMgScAlMgSc
4040
Mgmg
4242
TiTi
4444
erste Breitseitefirst broadside
4646
zweite Breitseitesecond broadside
4848
dreidimensionale Formthree-dimensional shape
5050
Längserstreckunglongitudinal extension

Claims (15)

  1. Shaping device (10) for creating connecting attachments (16) on reinforcing elements (14), comprising at least one pressure wave generating device (18), for generating at least one pressure wave directed onto a first wide face (44) of a reinforcing element (14), and a masking device (20), to be arranged on a second wide face (46) of the reinforcing element (14) opposite the first wide face (44), the masking device (20) being formed with a shaping block (30) which comprises shaped recesses (28) for producing predetermined connecting attachment shapes.
  2. Shaping device (10) according to claim 1,
    characterised in that the pressure wave generating device (18) is formed to generate pressure wave pulses having a predetermined pulse length and having a predetermined spacing of the pulses.
  3. Shaping device (10) according to either claim 1 or claim 2,
    characterised in that the pressure wave generating device (18) is formed with a coil device (32) having at least one coil (34).
  4. Shaping device (10) according to claim 3,
    characterised in that the coil device (32) comprises a plurality of coils (34), in particular coils (34) having different geometries, which are arranged side by side.
  5. Shaping device (10) according to any of claims 1 to 4, characterised in that the shaping block (30) is formed so as to shape a surface (12) of a reinforcing element (14) into a predetermined three-dimensional shape (48).
  6. Shaping device (10) according to any of claims 1 to 5, characterised in that a positioning device (22) is provided for changing the relative position of the coil device (32) and the reinforcing element (14) and/or for changing the relative position of the shaping block (30) and the reinforcing element (14).
  7. Shaping device (10) according to any of claims 1 to 6, characterised in that the shaping device (10) comprises a cutting device (24) for cutting the reinforcing element (14) to shape during the shaping.
  8. Shaping device (10) according to any of claims 1 to 7, characterised in that a control device (26) is provided for actuating the positioning device (22) and/or for actuating the pressure wave generating device (18) and/or for actuating the cutting device (24).
  9. Use of the shaping device (10) according to any of claims 1 to 8 for producing connecting attachments (16) on reinforcing elements (14) made of alloys (36), in particular AlMgSc (38) and/or Mg (40) and/or Ti (42).
  10. Shaping method for producing connecting attachments (16) on reinforcing elements (14), comprising the steps of
    a) providing a shaping device (10) according to any of claims 1 to 8 comprising a pressure generating device (18) and a masking device (20);
    b) providing a reinforcing element (14);
    c) arranging the reinforcing element (14) between the pressure generating device (18) and the masking device (20);
    d) generating at least one pressure wave directed onto the reinforcing element (14).
  11. Shaping method according to claim 10,
    characterised in that a coil device (32) is provided as the pressure wave generating device (18), and in particular comprises a plurality of coils (34) arranged side by side.
  12. Shaping method according to either claim 10 or claim 11,
    characterised in that a masking device (20) is provided comprising a shaping block (30) comprising recesses (28) shaped to produce predetermined connecting attachment shapes and/or comprising a three-dimensionally shaped surface (12).
  13. Shaping method according to any of claims 10 to 12,
    characterised in that a plurality of pressure wave pulses are generated in succession in step d).
  14. Shaping method according to any of claims 10 to 13,
    characterised in that the relative position of the reinforcing element (14) and the masking device (20) and/or of the reinforcing element (14) and the coil device (32) is changed after step d), at least one pressure wave directed onto the reinforcing element (14) subsequently being generated.
  15. Shaping method according to any of claims 10 to 14, characterised in that the reinforcing element (14) is provided with material formed from alloys (36), in particular AlMgSc (38) and/or Mg (40) and/or Ti (42).
EP14003976.9A 2013-12-03 2014-11-26 Forming device and method for producing connection protrusions Active EP2881191B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013018089.9A DE102013018089A1 (en) 2013-12-03 2013-12-03 Forming device and forming method for creating connection approaches

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EP2881191B1 true EP2881191B1 (en) 2016-05-11

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Publication number Priority date Publication date Assignee Title
DE1122188B (en) * 1958-08-28 1962-01-18 Gen Dynamics Corp Process for deforming conductive, in particular metallic, workpieces in solid form
US6751994B2 (en) * 2002-05-28 2004-06-22 Magna International Inc. Method and apparatus for forming a structural member
DE102009047671A1 (en) * 2009-12-08 2011-06-09 Airbus Operations Gmbh A method for bonding a fiber composite component to a structural component of an aircraft and spacecraft and a corresponding arrangement
DE102011003548B4 (en) * 2011-02-03 2024-02-22 Bayerische Motoren Werke Aktiengesellschaft Device for electromagnetically forming a sheet metal material with an advancing hold-down device
DE102012023089B4 (en) * 2012-11-27 2015-11-05 Airbus Defence and Space GmbH Cold forming method and forming apparatus for cold forming

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