EP1285704B1 - Device for removing dents from a metal sheet - Google Patents

Device for removing dents from a metal sheet Download PDF

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Publication number
EP1285704B1
EP1285704B1 EP02017449A EP02017449A EP1285704B1 EP 1285704 B1 EP1285704 B1 EP 1285704B1 EP 02017449 A EP02017449 A EP 02017449A EP 02017449 A EP02017449 A EP 02017449A EP 1285704 B1 EP1285704 B1 EP 1285704B1
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EP
European Patent Office
Prior art keywords
holder
supporting element
sheet metal
support
receptacle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02017449A
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German (de)
French (fr)
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EP1285704A1 (en
Inventor
Olaf Ritter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Adolf Wuerth GmbH and Co KG
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Adolf Wuerth GmbH and Co KG
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Publication of EP1285704A1 publication Critical patent/EP1285704A1/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
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/06—Removing local distortions

Definitions

  • the invention relates to a device for the buckling of sheet metal according to the preamble of patent claim 1.
  • the invention is based on the object to provide a device for the buckling of sheet metal, which gives good results even with more complicated progressions of the sheet metal parts in which the bumps are present.
  • the invention proposes a device with the features mentioned in claim 1. Further developments of the invention are the subject of dependent claims.
  • the point at which the holder is supported on the sheet regardless of the shape of the sheet metal surface can be selected. It is therefore possible to bring the support elements also relatively close to the point to be machined, even if there is a more complicated course of the sheet surface. By bringing the support points close to the point of the sheet to be machined, care can be taken that only the part that forms the bulge is pulled out.
  • the adjustability can for example be realized so that the support element can be mounted in discrete individual positions on the holder. But it is particularly advantageous if the attachment is such that the support element is infinitely adjustable.
  • the stepless adjustability can be designed so that the support element adapts itself in its position to the shape of the sheet metal surface. This can be achieved so that the adjustment is smooth, so that the appropriate adjustment can be done by itself. At the ease of doing so are not too great demands, since when pulling out of the bulge relatively large forces occur, which affect the support elements as pressure forces.
  • the different positions of the at least one support element differ in their angular position about an axis. This would correspond to a stepless adjustment of a pivoting of the support element about an axis.
  • the invention provides that at least one support element is also removably attached to the holder.
  • the removability serves not only to replace a possibly damaged support element, but also to replace a support element against another support element, for example, has a different shape or size.
  • the attachment is designed such that it is pressure-resistant.
  • a stepless adjustability can be inventively provided that the adjustability is limited, so that the support elements can not assume a position that complicates handling of the device when placed on the plate.
  • the mounting option for example, look so that the support member has a receptacle for a counter-element of the holder.
  • this counter-element may be, for example, a shaft which is attached to the holder and forms an axis for the adjustability of the support element.
  • a rod is attached, which runs approximately parallel to the pulling direction of the tension member and the free end is provided with an element which can cooperate with the recording of the support element.
  • the free end of this rod a transverse pin.
  • a support element also has a plurality of receptacles. If the support element is pivotable about a fixed axis of the holder, this can serve for better support, in particular for large-area support elements.
  • a plurality of receptacles are arranged on a plate, wherein the plate can then be divided by the end user so that support elements, each with a receptacle arise. The user can therefore form his own support element itself within certain limits.
  • At least one support element is deformable in the region of its side associated with the sheet metal.
  • Such deformability of the support element in itself can be achieved, for example, that the support element consists of plastic. It It is also possible, not only in the case of plastic support elements, to form the support element in one piece with the receptacle.
  • the support element is divided in itself, that forms with a recording of several feet.
  • the recording of the support element is adjustably mounted on the support element.
  • the adjustment direction can extend transversely to the pulling direction of the tension element.
  • a device for removing bumps from sheet metal contains a holder 1, which in the simplified representation of FIG. 1 is not explained in detail.
  • a tension element 2 is mounted axially displaceable.
  • the tension member 2 is made of metal and can thereby be connected to a bulge 3 in a piece of sheet metal, that it is welded to the sheet.
  • the holder 1 contains a total of four, for example made of sheet metal legs 4, wherein in each case a pair of legs 4 is connected by a pin 5.
  • a support member 6 is mounted, with the help of the right in FIG. 1 to see staple 7.
  • the bracket 7 is screwed by means of a screw 8 to the recording.
  • the bracket 7 practically forms the receptacle of the support element 6 for a counter element of the holder 1, namely in the example shown, the pin 5.
  • the support member 6 is pivotable by attachment to the pin 5 about its axis. The pivotability is limited by the shape of the ends of the legs 4.
  • the ends of the legs 4 extend in the central region along a circular arc 9, which laterally merges into a tangent 10.
  • the ends of the legs 4 lie with the arcuate portion 9 in the neutral position of the support elements 6 directly on the top of the support elements 6. As a result, a direct pressure transfer can take place without the involvement of the recording. This contact between the surface of the support elements 6 and the free end of the legs 4 is maintained in all possible angular positions of the support elements 6.
  • FIG. 2 shows a section along line II-II in FIG. 1 ,
  • the support elements 6 have the shape of elongated plates whose mutually facing inner edges are cut out arcuately. This is to take into account the fact that the bumps in supervision are usually circular.
  • the brackets 7, of which each support member 6 has two, are arranged so as to engage adjacent to the legs 4 on the pin 5. As a result, a displacement of the support elements 6 in the direction of the pin 5 is practically excluded. It is possible to detach the support elements 6 by pulling from the pin 5 and to attach them in the reverse position, so that the arcuate cutouts 12 come to rest outwards. In this case, the support could be brought closer to the bulge zoom.
  • FIG. 3 shows an extreme example, in which positions the support elements 6 can be brought to a specific shape of the surface of the sheet to be machined. Due to the adjustment of the support elements 6 can be taken to ensure that they do not themselves produce bumps or kinks again.
  • the sheet to be machined is at least partially flat. This is also true in many cases.
  • a support element 16 which in turn is at least partially deformable. This is in FIG. 4 shown.
  • the support element 16 is slightly wider in relation to the support elements 6 of the previous embodiments.
  • the attachment to the pin 5 is done again with the help of the already mentioned bracket 7.
  • the support member 16 adapts to the shape of the sheet to be machined. It is also conceivable to use a support element which has a rigid shape which is adapted to the shape of the sheet to be machined. However, this would mean support elements only for certain points of a certain type of motor vehicle.
  • FIG. 5 shows a way to make a support member 26 entirely made of plastic, wherein the receptacle 27 for receiving the pin 5 is integrally made of plastic.
  • the inner shape of the receptacle 27 corresponds to the shape as used by the clip 7.
  • the opening provided with chamfers 28 openings 29 are arranged in the outer side of the two limbs delimiting the opening, which lead to a material weakening. As a result, the spreading is facilitated.
  • FIG. 6 shows another support member 36 which is divided in itself and thus forms two Abstützfgnae 37, which rest against the top of the sheet to be machined.
  • two support elements are present, which are connected to each other and have a common receptacle for the pin 5.
  • Support member 36 molded plastic and has integrally the receptacle 27 for the pin 5.
  • the receptacle is designed in the same way as in FIG. 5 so that it will not be described again.
  • the support legs 37 are connected via relatively narrow webs 38 with the receptacle for the shaft 5. This creates at this point, namely the webs 38, a kind of hinge, which is realized by a deformation of the material of the support member 36. This gives a further improved adaptation to complicated shapes of the sheet metal surfaces and a good distribution of the forces occurring.
  • FIG. 7 a way to attach the bracket 7 to the receptacle 6, that here is another adjustment is given.
  • a slot 38 is present, which extends transversely to the longitudinal direction of the pin 5.
  • the measured perpendicular to paper plane width of the slot 38 corresponds to the outer diameter of the screw 8, which is guided in this case from bottom to top and with a nut 39 cooperates.
  • the screw 8 can be moved in the slot 38, thereby displacing the support member 6 relative to the pin 5 laterally. It becomes possible to move the support elements 6 closer to the point of the sheet to be machined, or even further from this point, depending on the shape and size of the bulge to be pulled out.
  • FIG. 8 shows a way in which a receptacle on a support element in several positions with the pin 5 of the holder can be connected.
  • the receptacle on three adjacent incisions 27, which are constructed approximately as the notches 27 in the embodiment according to FIG. 5 and 6 are constructed approximately as the notches 27 in the embodiment according to FIG. 5 and 6 .
  • the support member 6 can be adjusted transversely to the pulling direction, in three stages.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Forging (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The planishing device can remove concave depressions (3) from a sheet. It includes a holder (1) supported against the sheet being planished by support elements (6). A traction element (2), fixed to the sheet, is pulled along relative to the holder. The support elements are so arranged that their direction and/or spacing can be altered.

Description

Die Erfindung betrifft eine Vorrichtung zum Ausbeulen von Blech gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for the buckling of sheet metal according to the preamble of patent claim 1.

Es ist bekannt, dass man konkave Beulen in Blechteilen, insbesondere Automobilkarosserien, mit Hilfe von Vorrichtungen entfernen kann, die die Beule nach außen herausziehen. Solche Vorrichtungen enthalten eine Halterung, an der ein Zugelement angebracht ist. Die Halterung kann mit beispielsweise zwei Abstützelementen auf das Blechteil aufgesetzt werden. Anschließend wird das Zugelement direkt oder mit Hilfe eines Adapters in der Beule befestigt. Dann wird die Beule heraus gezogen, wobei sich die Halterung dann mit den Abstützelementen an dem Blechteil abstützt.It is known that one can remove concave bumps in sheet metal parts, in particular automobile bodies, with the aid of devices which pull out the bump to the outside. Such devices include a holder to which a tension member is attached. The holder can be placed with, for example, two support elements on the sheet metal part. Subsequently, the tension element is attached directly or with the aid of an adapter in the bump. Then the bump is pulled out, wherein the holder is then supported with the support elements on the sheet metal part.

Es ist bereits eine Ausbeulvorrichtung bekannt ( DE 9315560 ), bei der an einer Stange zwei Bügel verschiebbar angeordnet sind, die jeweils zwei über ein Kugelgelenk angelenkte Fußplatten aufweisen.There is already known a bulge device ( DE 9315560 ), in which two brackets are slidably mounted on a rod, each having two hinged via a ball joint foot plates.

Weiterhin bekannt ist eine Ausbeulvorrichtung, bei der an einer Stange zwei Abstützelemente in Längsrichtung der Stange verschiebbar angebracht sind, wobei eines der beiden Abstützelemente ein Kugelgelenk aufweist. ( WO 01/34316 ).Also known is a Ausbulvorrichtung, in which two support elements are slidably mounted in the longitudinal direction of the rod on a rod, wherein one of the two support elements comprises a ball joint. ( WO 01/34316 ).

Bei einer weiteren bekannten Ausbeulvorrichtung ( US 49303035 ) sind vier Abstützelemente vorhanden, die über jeweils ein Gelenk mit der Vorrichtung verbunden sind. Dieses Gelenk weist zwei zueinander senkrecht verlaufende Drehachsen auf, so dass die Wirkung eines Kugelgelenks erreicht wird.In another known bulging device ( US 49303035 ) There are four support elements, which are connected via a respective joint with the device. This joint has two mutually perpendicular axes of rotation, so that the effect of a ball joint is achieved.

Bei einer weiteren bekannten Ausbeulvorrichtung sind an einer Stange verschiebbar zwei Elemente zum Befestigen an dem Blech außerhalb der herauszuziehenden Beule angeordnet. Diese Befestigungselemente sind als Saugnäpfe ausgebildet, so dass sie sich nicht abstützen, sondern festhalten. Sie sind nicht austauschbar angebracht ( EP 856366 ).In another known Ausbulvorrichtung two elements are arranged to be fastened to the sheet outside the bulge to be pulled out on a rod slidably. These fasteners are designed as suction cups, so that they do not support, but hold. They are not interchangeable ( EP 856366 ).

Bei den relativ glattflächigen Blechoberflächen arbeiten diese bekannten Geräte zufriedenstellend. Wenn aber die Konturen der Oberfläche zu kompliziert werden, kann es Schwierigkeiten geben.In the relatively smooth-surfaced metal surfaces, these known devices work satisfactorily. But if the contours of the surface become too complicated, there can be difficulties.

Der Erfindung liegt die Aufgabe zu Grunde, eine Vorrichtung zum Ausbeulen von Blech zu schaffen, die auch bei komplizierteren Verläufen der Blechteile, in denen die Beulen vorhanden sind, gute Ergebnisse liefert.The invention is based on the object to provide a device for the buckling of sheet metal, which gives good results even with more complicated progressions of the sheet metal parts in which the bumps are present.

Zur Lösung dieser Aufgabe schlägt die Erfindung eine Vorrichtung mit den im Anspruch 1 genannten Merkmalen vor. Weiterbildungen der Erfindung sind Gegenstand von Unteransprüchen.To solve this problem, the invention proposes a device with the features mentioned in claim 1. Further developments of the invention are the subject of dependent claims.

Durch die Verstellbarkeit des mindestens einen Abstützelements, vorzugsweise aller Abstützelemente, kann die Stelle, an der sich die Halterung an dem Blech abstützt, unabhängig von der Form der Blechoberfläche gewählt werden. Es ist daher möglich, die Abstützelemente auch relativ nahe an die zu bearbeitende Stelle heran zu rücken, auch wenn dort ein komplizierterer Verlauf der Blechoberfläche vorhanden ist. Wenn man die Abstützstellen nahe an die zu bearbeitende Stelle des Blechs heran rückt, kann dafür gesorgt werden, dass wirklich nur diejenige Stelle herausgezogen wird, die die Beule bildet.Due to the adjustability of the at least one support element, preferably all support elements, the point at which the holder is supported on the sheet, regardless of the shape of the sheet metal surface can be selected. It is therefore possible to bring the support elements also relatively close to the point to be machined, even if there is a more complicated course of the sheet surface. By bringing the support points close to the point of the sheet to be machined, care can be taken that only the part that forms the bulge is pulled out.

Die Verstellbarkeit kann beispielsweise so verwirklicht sein, dass das Abstützelement in einzelnen diskreten Stellungen an der Halterung angebracht werden kann. Besonders günstig ist es aber, wenn die Anbringung derart ist, dass das Abstützelement stufenlos verstellbar ist. Die stufenlose Verstellbarkeit kann so ausgebildet sein, dass sich das Abstützelement in seiner Position von selbst der Form der Blechoberfläche anpasst. Dies kann so erreicht werden, dass die Verstellung leichtgängig ist, so dass die entsprechende Anpassung von allein erfolgen kann. An die Leichtgängigkeit sind dabei keine zu großen Anforderungen zu stellen, da beim Herausziehen der Beule relativ große Kräfte auftreten, die sich bei den Stützelementen als Druckkräfte auswirken.The adjustability can for example be realized so that the support element can be mounted in discrete individual positions on the holder. But it is particularly advantageous if the attachment is such that the support element is infinitely adjustable. The stepless adjustability can be designed so that the support element adapts itself in its position to the shape of the sheet metal surface. This can be achieved so that the adjustment is smooth, so that the appropriate adjustment can be done by itself. At the ease of doing so are not too great demands, since when pulling out of the bulge relatively large forces occur, which affect the support elements as pressure forces.

Die unterschiedlichen Stellungen des mindestens einen Abstützelements unterscheiden sich in ihrer Winkelstellung um eine Achse . Dies würde bei einer stufenlosen Verstellbarkeit einer Verschwenkung des Abstützelements um eine Achse entsprechen.The different positions of the at least one support element differ in their angular position about an axis. This would correspond to a stepless adjustment of a pivoting of the support element about an axis.

Es ist aber ebenfalls möglich und wird von der Erfindung vorgeschlagen, dass sich die unterschiedlichen Einstellungen in ihrem Abstand längs einer Achse parallel zur Verstellrichtung des Zugelements unterscheiden. Eine solche Verstellmöglichkeit kann dazu dienen, beispielsweise eine Stufe in der Karosserieoberfläche auszugleichen. Denn das Herausziehen der Beule soll im Regelfall in einer Richtung erfolgen, die senkrecht zur Blechoberfläche im Bereich der Beule verläuft.However, it is also possible and is proposed by the invention that differ the different settings in their distance along an axis parallel to the adjustment direction of the tension element. Such adjustment can serve to compensate for example, a step in the body surface. Because the withdrawal of the bump should normally be in a direction perpendicular to the sheet surface in the bump.

Um die Vorrichtung nochmals besser an ihre Funktionen anzupassen, ist erfindungsgemäß vorgesehen, dass mindestens ein Abstützelement auch abnehmbar an der Halterung angebracht ist. Die Abnehmbarkeit dient nicht nur zum Ersatz eines möglicherweise beschädigten Abstützelements, sondern auch dazu, ein Abstützelement gegen ein anderes Abstützelement auszutauschen, das beispielsweise eine andere Form oder Größe aufweist.In order to adapt the device even better to their functions, the invention provides that at least one support element is also removably attached to the holder. The removability serves not only to replace a possibly damaged support element, but also to replace a support element against another support element, for example, has a different shape or size.

Bei der Abnehmbarkeit kann erfindungsgemäß dafür gesorgt werden, dass der Austausch leicht erfolgen kann, also beispielsweise durch ein einfaches Einschnappen. Dabei kann erfindungsgemäß vorgesehen sein, dass die Anbringung derart ausgebildet ist, dass sie druckfest ist.When removability can be ensured according to the invention that the replacement can be easily done, so for example by a simple snap. It can be provided according to the invention that the attachment is designed such that it is pressure-resistant.

Bei einer stufenlosen Verstellbarkeit kann erfindungsgemäß vorgesehen sein, dass die Verstellbarkeit begrenzt ist, damit die Abstützelemente keine Position einnehmen können, die eine Handhabung der Vorrichtung beim Aufsetzen auf das Blech erschwert.In a stepless adjustability can be inventively provided that the adjustability is limited, so that the support elements can not assume a position that complicates handling of the device when placed on the plate.

Die Befestigungsmöglichkeit kann beispielsweise so aussehen, dass das Abstützelement eine Aufnahme für ein Gegenelement der Halterung aufweist. Bei diesem Gegenelement kann es sich beispielsweise um eine Welle handeln, die an der Halterung angebracht ist und eine Achse für die Verstellbarkeit des Abstützelements bildet.The mounting option, for example, look so that the support member has a receptacle for a counter-element of the holder. In this counter-element may be, for example, a shaft which is attached to the holder and forms an axis for the adjustability of the support element.

Es kann in Weiterbildung der Erfindung auch vorgesehen sein, dass an der Halterung eine Stange angebracht ist, die etwa parallel zur Zugrichtung des Zugelements verläuft und deren freies Ende mit einem Element versehen ist, das mit der Aufnahme des Abstützelements zusammen wirken kann. Beispielsweise kann das freie Ende dieser Stange einen Querzapfen.It may also be provided in development of the invention that on the holder a rod is attached, which runs approximately parallel to the pulling direction of the tension member and the free end is provided with an element which can cooperate with the recording of the support element. For example, the free end of this rod a transverse pin.

Es kann erfindungsgemäß vorgesehen sein, dass ein Abstützelement auch mehrerer Aufnahmen aufweist. Wenn das Abstützelement um eine feste Achse der Halterung verschwenkbar ist, kann dies zu besseren Abstützung insbesondere bei großflächigen Abstützelementen dienen.It may be provided according to the invention that a support element also has a plurality of receptacles. If the support element is pivotable about a fixed axis of the holder, this can serve for better support, in particular for large-area support elements.

Erfindungsgemäß kann ebenfalls vorgesehen sein, dass an einer Platte mehrere Aufnahmen angeordnet sind, wobei sich die Platte dann von dem Endbenutzer so zerteilen lässt, dass Abstützelemente mit jeweils einer Aufnahme entstehen. Der Benutzer kann sich also sein jeweiliges Abstützelement selbst in gewissen Grenzen formen.According to the invention can also be provided that a plurality of receptacles are arranged on a plate, wherein the plate can then be divided by the end user so that support elements, each with a receptacle arise. The user can therefore form his own support element itself within certain limits.

In nochmaliger Weiterbildung der Erfindung kann vorgesehen sein, dass mindestens ein Abstützelement im Bereich seiner dem Blech zugeordneten Seite in sich verformbar ausgebildet ist. Dadurch lässt sich eine noch bessere Anpassung der Abstützung an komplizierte Formen in der Blechoberfläche erreichen. Eine solche Verformbarkeit des Abstützelements in sich kann beispielsweise dadurch erreicht werden, dass das Abstützelement aus Kunststoff besteht. Es ist ebenfalls möglich, nicht nur bei aus Kunststoff bestehenden Abstützelementen, das Abstützelement einstückig mit der Aufnahme auszubilden.In a further development of the invention it can be provided that at least one support element is deformable in the region of its side associated with the sheet metal. As a result, an even better adaptation of the support to complicated shapes in the sheet metal surface can be achieved. Such deformability of the support element in itself can be achieved, for example, that the support element consists of plastic. It It is also possible, not only in the case of plastic support elements, to form the support element in one piece with the receptacle.

Es ist ebenfalls möglich, dass das Abstützelement in sich selbst geteilt ist, also mit einer Aufnahme mehrer Füße bildet.It is also possible that the support element is divided in itself, that forms with a recording of several feet.

In nochmaliger Weiterbildung kann ebenfalls vorgesehen sein, dass die Aufnahme des Abstützelements verstellbar an dem Abstützelement angebracht ist. Beispielsweise kann die Verstellrichtung quer zur Zugrichtung des Zugelements verlaufen.In a further development can also be provided that the recording of the support element is adjustably mounted on the support element. For example, the adjustment direction can extend transversely to the pulling direction of the tension element.

Weitere Merkmale, Einzelheiten und Vorzüge der Erfindung ergeben sich aus der folgenden Beschreibung bevorzugter Ausführungsformen der Erfindung, und dem Wortlaut der Patentansprüche , die durch Bezugnahme zum Inhalt der Beschreibung gemacht werden, sowie anhand der Zeichnung. Hierbei zeigen:

Figur 1
schematisch eine Seitenansicht einer ersten Ausführungsform;
Figur 2
einen Schnitt durch die Ausführungsform nach Figur 1;
Figur 3
die Wirkungsweise der Abstützelemente der Ausführungsform nach Figur 1;
Figur 4
ein Abstützelement bei einer weiteren Ausführungsform;
Figur 5
im Schnitt ein Abstützelement bei einer nochmals weiteren Ausführungsform;
Figur 6
die Darstellung eines geteilten Abstützelements;
Figur 7
die Möglichkeit der Verstellung einer Aufnahme an einem Abstützelement;
Figur 8
eine weitere Möglichkeit der Verstellbarkeit eines Abstützelements gegenüber der Halterung;
Further features, details and advantages of the invention will become apparent from the following description of preferred embodiments of the invention, and the wording of the claims, which are incorporated by reference into the content of the description, and with reference to the drawing. Hereby show:
FIG. 1
schematically a side view of a first embodiment;
FIG. 2
a section through the embodiment according to FIG. 1 ;
FIG. 3
the operation of the support elements of the embodiment according to FIG. 1 ;
FIG. 4
a support member in another embodiment;
FIG. 5
in section, a support element in yet another embodiment;
FIG. 6
the representation of a divided support element;
FIG. 7
the possibility of adjusting a recording on a support element;
FIG. 8
a further possibility of adjustability of a support member relative to the holder;

Eine Vorrichtung zum Entfernen von Beulen aus Blech enthält eine Halterung 1, die in der vereinfachten Darstellung der Figur 1 nicht näher erläutert ist. In der Halterung 1 ist ein Zugelement 2 axial verschiebbar gelagert. Im dargestellten Beispiel besteht das Zugelement 2 aus Metall und kann dadurch mit einer Beule 3 in einem Stück Blech verbunden werden, dass es an dem Blech angeschweißt wird. An Stelle einer Anschweißung ist auch eine Befestigung mit Hilfe eines Klebers möglich. Die Halterung 1 enthält insgesamt vier beispielsweise aus Blech bestehende Beine 4, wobei jeweils ein Paar von Beinen 4 durch einen Zapfen 5 verbunden ist. An jedem Zapfen 5 ist ein Abstützelement 6 angebracht, und zwar mit Hilfe der rechts in Figur 1 zu sehenden Klammer 7. Die Klammer 7 ist mit Hilfe einer Schraube 8 an der Aufnahme festgeschraubt. Die Klammer 7 bildet praktisch die Aufnahme des Abstützelements 6 für ein Gegenelement der Halterung 1, nämlich im dargestellten Beispiel den Zapfen 5. Das Abstützelement 6 ist durch die Anbringung an dem Zapfen 5 um dessen Achse verschwenkbar. Die Verschwenkbarkeit ist durch die Form der Enden der Beine 4 begrenzt. Die Enden der Beine 4 verlaufen in dem mittleren Bereich längs eines Kreisbogens 9, der seitlich in eine Tangente 10 übergeht. Die Enden der Beine 4 liegen mit dem bogenförmigen Bereich 9 in der neutralen Stellung der Abstützelemente 6 direkt auf der Oberseite der Abstützelemente 6 auf. Dadurch kann eine direkte Druckübertragung ohne Mitwirkung der Aufnahme erfolgen. Dieser Kontakt zwischen der Oberfläche der Abstützelemente 6 und dem freien Ende der Beine 4 bleibt in allen möglichen Winkelstellungen der Abstützelemente 6 erhalten.A device for removing bumps from sheet metal contains a holder 1, which in the simplified representation of FIG. 1 is not explained in detail. In the holder 1, a tension element 2 is mounted axially displaceable. In the example shown, the tension member 2 is made of metal and can thereby be connected to a bulge 3 in a piece of sheet metal, that it is welded to the sheet. In place of a weld attachment with the help of an adhesive is possible. The holder 1 contains a total of four, for example made of sheet metal legs 4, wherein in each case a pair of legs 4 is connected by a pin 5. At each pin 5, a support member 6 is mounted, with the help of the right in FIG. 1 to see staple 7. The bracket 7 is screwed by means of a screw 8 to the recording. The bracket 7 practically forms the receptacle of the support element 6 for a counter element of the holder 1, namely in the example shown, the pin 5. The support member 6 is pivotable by attachment to the pin 5 about its axis. The pivotability is limited by the shape of the ends of the legs 4. The ends of the legs 4 extend in the central region along a circular arc 9, which laterally merges into a tangent 10. The ends of the legs 4 lie with the arcuate portion 9 in the neutral position of the support elements 6 directly on the top of the support elements 6. As a result, a direct pressure transfer can take place without the involvement of the recording. This contact between the surface of the support elements 6 and the free end of the legs 4 is maintained in all possible angular positions of the support elements 6.

Beim Entfernen der Beule 3 aus dem Blech wird auf die Stange 2 eine Kraft in Richtung des Pfeiles 11 ausgeübt. Dies führt zu einer Gegenkraft der Beine 4 und damit der Abstützelemente 6 auf die Oberfläche des Blechs im Bereich der zu bearbeitenden Stelle. Die Verbindung zwischen der Halterung 1 und den Abstützelementen 6 muss in der Lage sein, diese Druckkräfte zu übertragen. In umgekehrter Richtung werden auf die Abstützelemente 6 keine Kräfte übertragen, so dass die relativ einfach aufgebaute Blechklammer 7 ausreicht, eine Verbindung zwischen den Abstützelementen 6 und der Halterung 1 herzustellen.When removing the bulge 3 from the sheet, a force in the direction of the arrow 11 is exerted on the rod 2. This leads to a counterforce of the legs 4 and thus the support elements 6 on the surface of the sheet in the area to be machined. The connection between the holder 1 and the support elements 6 must be able to transmit these compressive forces. In the opposite direction, no forces are transmitted to the support elements 6, so that the relatively simple constructed sheet metal clamp 7 is sufficient to establish a connection between the support elements 6 and the holder 1.

Figur 2 zeigt einen Schnitt längs Linie II-II in Figur 1. Die Abstützelemente 6 weisen die Form langgestreckter Platten auf, deren einander zugewandten Innenkanten bogenförmig ausgeschnitten sind. Damit soll der Tatsache Rechnung getragen werden, dass die Beulen in Aufsicht meistens kreisrund sind. Die Klammern 7, von denen jedes Abstützelement 6 zwei aufweist, sind so angeordnet, dass sie benachbart zu den Beinen 4 an dem Zapfen 5 angreifen. Dadurch ist eine Verschiebung der Abstützelemente 6 in Richtung des Zapfens 5 praktisch ausgeschlossen. Es ist möglich, die Abstützelemente 6 durch Ziehen von dem Zapfen 5 zu lösen und in umgekehrter Position wieder anzubringen, so dass die bogenförmigen Ausschnitte 12 nach außen zu liegen kommen. In diesem Fall könnte die Abstützung näher an die Beule heran geführt werden. FIG. 2 shows a section along line II-II in FIG. 1 , The support elements 6 have the shape of elongated plates whose mutually facing inner edges are cut out arcuately. This is to take into account the fact that the bumps in supervision are usually circular. The brackets 7, of which each support member 6 has two, are arranged so as to engage adjacent to the legs 4 on the pin 5. As a result, a displacement of the support elements 6 in the direction of the pin 5 is practically excluded. It is possible to detach the support elements 6 by pulling from the pin 5 and to attach them in the reverse position, so that the arcuate cutouts 12 come to rest outwards. In this case, the support could be brought closer to the bulge zoom.

Figur 3 zeigt ein extremes Beispiel, in welche Positionen die Abstützelemente 6 bei einer speziellen Form der Oberfläche des zu bearbeitenden Blechs gebracht werden können. Durch die Verstellmöglichkeit der Abstützelemente 6 kann dafür gesorgt werden, dass diese nicht selbst wieder Beulen oder Knicke erzeugen. FIG. 3 shows an extreme example, in which positions the support elements 6 can be brought to a specific shape of the surface of the sheet to be machined. Due to the adjustment of the support elements 6 can be taken to ensure that they do not themselves produce bumps or kinks again.

Bei der Ausführungsform nach Figur 3 wird davon ausgegangen, dass das zu bearbeitende Blech mindestens teilweise eben ausgebildet ist. Dies ist in vielen Fällen auch zutreffend. In den Fällen, in denen eine Abstützung an einem gebogenen Blechteil erfolgen muss, ist es sinnvoll, ein Abstützelement 16 zu verwenden, das seinerseits mindestens teilweise verformbar ist. Dies ist in Figur 4 dargestellt. Hier ist das Abstützelement 16 etwas breiter ausgebildet im Verhältnis zu den Abstützelementen 6 der vorherigen Ausführungsformen. Die Befestigung an dem Zapfen 5 geschieht wieder mit Hilfe der bereits erwähnten Klammer 7. Das Abstützelement 16 passt sich der Form des zu bearbeitenden Blechs an. Es ist auch denkbar, ein Abstützelement zu verwenden, das eine starre Form aufweist, die an die Form des zu bearbeitenden Blechs angepasst ist. Dies würde aber Abstützelemente nur für bestimmte Stellen eines bestimmten Kraftfahrzeugtyps bedeuten.In the embodiment according to FIG. 3 it is assumed that the sheet to be machined is at least partially flat. This is also true in many cases. In cases where a support must be made on a bent sheet metal part, it makes sense to use a support element 16, which in turn is at least partially deformable. This is in FIG. 4 shown. Here, the support element 16 is slightly wider in relation to the support elements 6 of the previous embodiments. The attachment to the pin 5 is done again with the help of the already mentioned bracket 7. The support member 16 adapts to the shape of the sheet to be machined. It is also conceivable to use a support element which has a rigid shape which is adapted to the shape of the sheet to be machined. However, this would mean support elements only for certain points of a certain type of motor vehicle.

Figur 5 zeigt eine Möglichkeit, ein Abstützelement 26 vollständig aus Kunststoff herzustellen, wobei auch die Aufnahme 27 zur Aufnahme des Zapfens 5 einstückig aus Kunststoff hergestellt ist. Die Innenform der Aufnahme 27 entspricht der Form, wie sie von der Klammer 7 verwendet wird. Zur Erleichterung des Aufspreizens der mit Einführschrägen 28 versehenen Öffnung sind in der Außenseite der beiden die Öffnung begrenzenden Schenkel Einschnitte 29 angeordnet, die zu einer Materialschwächung führen. Dadurch wird das Aufspreizen erleichtert. Es kann bei der Ausführungsform der Figur 5 vorgesehen sein, zwischen der dem zu bearbeitenden Blech zugeordneten Unterseite der Abstützelemente 26 und der Aufnahme 27 in einer Aussparung 30 des Abstützelements 26 einen Magneten 31 vorzusehen, der mit dem Material des Zapfens 5 zusammen wirkt. FIG. 5 shows a way to make a support member 26 entirely made of plastic, wherein the receptacle 27 for receiving the pin 5 is integrally made of plastic. The inner shape of the receptacle 27 corresponds to the shape as used by the clip 7. To facilitate Aufspreizens the opening provided with chamfers 28 openings 29 are arranged in the outer side of the two limbs delimiting the opening, which lead to a material weakening. As a result, the spreading is facilitated. It may in the embodiment of the FIG. 5 be provided between the sheet to be machined associated bottom of the support members 26 and the receptacle 27 in a recess 30 of the support member 26 to provide a magnet 31 which cooperates with the material of the pin 5.

Figur 6 zeigt ein weiteres Abstützelement 36, das in sich geteilt ist und damit zwei Abstützfüße 37 bildet, die an der Oberseite des zu bearbeitenden Blechs anliegen. Man könnte dies auch so ausdrücken, dass zwei Abstützelemente vorhanden sind, die miteinander verbunden sind und eine gemeinsame Aufnahme für den Zapfen 5 aufweisen. Auch bei dieser Ausführungsform ist das Abstützelement 36 aus Kunststoff gespritzt und weist einstückig die Aufnahme 27 für den Zapfen 5 auf. Die Aufnahme ist in der gleichen Weise ausgebildet wie bei Figur 5, so dass sie nicht nochmals beschrieben wird. Bei dieser Ausführungsform sind die Abstützfüße 37 über relativ schmale Stege 38 mit der Aufnahme für die Welle 5 verbunden. Dadurch entsteht an dieser Stelle, nämlich den Stegen 38, eine Art Scharnier, die durch eine Verformung des Materials des Abstützelements 36 verwirklicht wird. Hiermit ist eine nochmals verbesserte Anpassung an komplizierte Formen der Blechoberflächen und eine gute Verteilung der auftretenden Kräfte gegeben. FIG. 6 shows another support member 36 which is divided in itself and thus forms two Abstützfüße 37, which rest against the top of the sheet to be machined. One could also say that two support elements are present, which are connected to each other and have a common receptacle for the pin 5. Also in this embodiment is Support member 36 molded plastic and has integrally the receptacle 27 for the pin 5. The receptacle is designed in the same way as in FIG. 5 so that it will not be described again. In this embodiment, the support legs 37 are connected via relatively narrow webs 38 with the receptacle for the shaft 5. This creates at this point, namely the webs 38, a kind of hinge, which is realized by a deformation of the material of the support member 36. This gives a further improved adaptation to complicated shapes of the sheet metal surfaces and a good distribution of the forces occurring.

Während bei der Ausführungsform nach Figur 1 die die Aufnahme bildende Klammer 7 mit Hilfe einer in eine Gewindebohrung eingreifenden Schraube 8 befestigt ist, zeigt Figur 7 eine Möglichkeit, die Klammer 7 so an der Aufnahme 6 zu befestigen, dass hier eine weitere Verstellmöglichkeit gegeben ist. In der Aufnahme 6 ist ein Langloch 38 vorhanden, das quer zur Längsrichtung des Zapfens 5 verläuft. Die senkrecht zu Papierebene gemessene Breite des Langlochs 38 entspricht dem Außendurchmesser der Schraube 8, die in diesem Fall von unten nach oben geführt ist und mit einer Mutter 39 zusammen wirkt. Bei dieser Ausführungsform kann die Schraube 8 in dem Langloch 38 verschoben werden, um dadurch das Abstützelement 6 gegenüber dem Zapfen 5 seitlich zu verschieben. Es wird möglich, die Abstützelemente 6 näher an die zu bearbeitende Stelle des Blechs heran zu rücken, oder auch weiter von dieser Stelle, je nach Form und Größe der herauszuziehenden Beule.While in the embodiment according to FIG. 1 the recording forming bracket 7 is fixed by means of a screw 8 engaging in a threaded hole shows FIG. 7 a way to attach the bracket 7 to the receptacle 6, that here is another adjustment is given. In the receptacle 6, a slot 38 is present, which extends transversely to the longitudinal direction of the pin 5. The measured perpendicular to paper plane width of the slot 38 corresponds to the outer diameter of the screw 8, which is guided in this case from bottom to top and with a nut 39 cooperates. In this embodiment, the screw 8 can be moved in the slot 38, thereby displacing the support member 6 relative to the pin 5 laterally. It becomes possible to move the support elements 6 closer to the point of the sheet to be machined, or even further from this point, depending on the shape and size of the bulge to be pulled out.

Figur 8 zeigt eine Möglichkeit, wie eine Aufnahme an einem Abstützelement in mehreren Positionen mit dem Zapfen 5 der Halterung verbunden werden kann. Zu diesem Zweck weist die Aufnahme drei nebeneinander liegende Einschnitte 27 auf, die etwa so aufgebaut sind wie die Einschnitte 27 bei der Ausführungsform nach Figur 5 und 6. Auch auf diese Weise kann das Abstützelement 6 quer zur Zugrichtung verstellt werden, und zwar in drei Stufen. FIG. 8 shows a way in which a receptacle on a support element in several positions with the pin 5 of the holder can be connected. For this purpose, the receptacle on three adjacent incisions 27, which are constructed approximately as the notches 27 in the embodiment according to FIG. 5 and 6 , Also in this way, the support member 6 can be adjusted transversely to the pulling direction, in three stages.

Claims (12)

  1. Apparatus for removing dents on sheet metal, with
    1.1 a holder (1),
    1.2 a tension element (2), supported
    1.2.1 on the holder (1),
    1.2.2 said is formed relatively movable at least linearly and
    1.2.3 tenaciously connectable with the point of the sheet metal to be processed, and with
    1.3 at least two supporting elements (6, 16, 26, 36) which can be connectable with one another, which
    1.3.1 support the holder (1) relative to the sheet metal, whereby
    1.3.2 at least one supporting element (6, 16, 26, 36) is exchangeable in attachment in several different positions on the holder (1),
    characterized in that
    1.4 the supporting element (6, 16, 26, 36) features a receptacle for a shaft attached to the holder (1), and can be snapped on the shaft, and that
    1.5 the different positions of the supporting element (6, 16, 26, 36) differ in their angular position around an axis formed by the shaft.
  2. Apparatus according to claim 1, whereby the supporting element (6, 16, 26, 36) is continuously variable in adjustment.
  3. Apparatus according to claim 1 or 2, whereby different positions of the supporting element (6, 16, 26, 36) differ in their distance along an axis parallel to the pull-direction of the tensioning element (2).
  4. Apparatus according to one of the preceding claims, whereby the attachment of the supporting element (6, 16, 26, 36) on the holder (1) is formed such that it is resistant to pressure.
  5. Apparatus according to one of the preceding claims 2 to 4, whereby the continuously variable adjustability of the supporting element (6, 16, 26, 36) is limited.
  6. Apparatus according to one of the preceding claims, whereby the shaft attached to the holder (1) is a pin (5) forming an axis.
  7. Apparatus according to one of the preceding claims, whereby the supporting element (6, 16. 26, 36) features several receptacles.
  8. Apparatus according to one of the preceding claims, whereby a plate with several receptacles is provided, which allows the user to subdivide it into several supporting elements of a desired shape.
  9. Apparatus according to one of the preceding claims, whereby at least one supporting element (16, 26, 36) is deformable at least in one area of its side facing the sheet metal.
  10. Apparatus according to one of the preceding claims, whereby at least a supporting element (26, 36) is molded in plastic as a single-piece with its receptacle.
  11. Apparatus according to one of the preceding claims, whereby the supporting element (36) is divided in itself.
  12. Apparatus according to one of the preceding claims, whereby the receptacle is adjustable on the supporting element (6) transverse to the pulling direction of the tensioning element (2).
EP02017449A 2001-08-14 2002-08-03 Device for removing dents from a metal sheet Expired - Lifetime EP1285704B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10140923A DE10140923A1 (en) 2001-08-14 2001-08-14 Device for denting sheet metal
DE10140923 2001-08-14

Publications (2)

Publication Number Publication Date
EP1285704A1 EP1285704A1 (en) 2003-02-26
EP1285704B1 true EP1285704B1 (en) 2008-10-29

Family

ID=7696108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02017449A Expired - Lifetime EP1285704B1 (en) 2001-08-14 2002-08-03 Device for removing dents from a metal sheet

Country Status (4)

Country Link
EP (1) EP1285704B1 (en)
AT (1) ATE412477T1 (en)
DE (2) DE10140923A1 (en)
DK (1) DK1285704T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019125136A1 (en) * 2019-09-18 2021-03-18 Siegbert Müller Drawing tool for machining depressions in a sheet metal component, in particular a motor vehicle

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4930335A (en) * 1989-07-03 1990-06-05 Kosei Ishihara Lever-type auto body dent puller
DE9315560U1 (en) * 1993-10-07 1994-01-13 Storz GmbH, 78727 Oberndorf Dent removal device
IT241272Y1 (en) * 1996-12-05 2001-05-03 Maggi Luciano DEVICE TO BRING BACK BODY PARTS TO THE FLAT
DE20003647U1 (en) * 1999-11-09 2000-05-18 Gabriel Michael Dent extractor DA62000
EP1409174B9 (en) * 1999-11-09 2006-07-19 MV Marketing und Vertriebs-GmbH & Co. KG Wieländer + Schill Adhering anchor and device for deforming areas of a vehicle body
DE20000085U1 (en) * 2000-01-04 2000-03-09 Wuerth Adolf Gmbh & Co Kg Arrangement for removing dents from sheet metal
DE10023518A1 (en) * 2000-05-13 2001-11-15 Wuerth Adolf Gmbh & Co Kg Bump removal device

Also Published As

Publication number Publication date
EP1285704A1 (en) 2003-02-26
DE10140923A1 (en) 2003-02-27
DK1285704T3 (en) 2009-03-02
DE50212949D1 (en) 2008-12-11
ATE412477T1 (en) 2008-11-15

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