EP0497780A1 - Process for the two-directional bending of sheet metal. - Google Patents

Process for the two-directional bending of sheet metal.

Info

Publication number
EP0497780A1
EP0497780A1 EP90913054A EP90913054A EP0497780A1 EP 0497780 A1 EP0497780 A1 EP 0497780A1 EP 90913054 A EP90913054 A EP 90913054A EP 90913054 A EP90913054 A EP 90913054A EP 0497780 A1 EP0497780 A1 EP 0497780A1
Authority
EP
European Patent Office
Prior art keywords
bending
cheek
sheet
sheet metal
rocker
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.)
Granted
Application number
EP90913054A
Other languages
German (de)
French (fr)
Other versions
EP0497780B1 (en
Inventor
Wolfgang Kutschker
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.)
Reinhardt Maschinenbau GmbH
Original Assignee
Reinhardt Maschinenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
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Application filed by Reinhardt Maschinenbau GmbH filed Critical Reinhardt Maschinenbau GmbH
Priority to AT90913054T priority Critical patent/ATE96062T1/en
Publication of EP0497780A1 publication Critical patent/EP0497780A1/en
Application granted granted Critical
Publication of EP0497780B1 publication Critical patent/EP0497780B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • B21D5/042With a rotational movement of the bending blade

Definitions

  • the invention relates to a method according to the preamble of patent claim 1.
  • the bending cheek can only be used in one working direction, for example in the case of a pivoting movement from bottom to top in a clockwise direction.
  • a folding machine with a machine frame, lower beam, upper beam and bending beam for carrying out the method according to the invention is characterized in that a first rocker is provided on both end faces of the bending beam, which can be pivoted about the pivot axis of the bending beam the first rocker has a second rocker movably mounted, and that a guide is provided on the second rocker, which permits a substantially rectilinear movement of the bending beam running perpendicular to the pivot axis, which in turn runs essentially perpendicular to the direction of movement of the second rocker.
  • Figure 1 several successive to 8 steps in the opposite bending of a sheet
  • FIG. 9 shows a device for carrying out a sheet metal bend in opposite directions corresponding to FIGS. 1 to 8.
  • FIGS. 1 to 8 each schematically show the essential parts of a folding machine, namely a lower beam 1, an upper beam 2 and a bending beam 3.
  • Die Bending beam 3 is rotatably mounted on the machine frame (not shown) and can be pivoted about a pivot axis S, which in FIGS. 1 to 8 runs perpendicular to the plane of the drawing.
  • a sheet 4 is clamped by lowering the upper cheek 2 in the direction of arrow A, which protrudes with a sheet metal section 5 over the cheeks 1, 2.
  • the bending cheek 3 engages with its upper or bending surface on the underside of the sheet metal section 5.
  • This side is also called the first side of the sheet 4 in the following, it is opposite the upper or second side of the sheet 4.
  • FIG. 1 shows the initial state of the bending process.
  • the bending beam 3 is pulled back from the bent sheet metal section 5 in a first adjustment direction (arrow C) perpendicular to its pivot axis S, so that it - cf. FIG. 4 - can be pivoted freely around this bent sheet metal section 5 further upwards (arrow D) until, after pivoting by a total of approximately 180 °, it faces the second or upper side of the sheet 4.
  • the pivoting cheek 3 according to FIG.
  • the adjustment directions of the bending cheek 3 according to the arrows C and E in FIGS. 3 and 5 run only apparently parallel to one another.
  • the arrow C always runs parallel to the small side and the arrow E always runs parallel to the large side of the rectangle schematically representing the bending beam 3 in the drawing.
  • the two adjustment directions according to the arrows C and E are therefore always perpendicular to one another, and the arrow C has also pivoted through 90 ° during the transition from FIG. 3 to FIGS. 4 and 5, as indicated by the broken line in FIG is.
  • this adjustment direction (arrow E) runs perpendicular to the plane containing the first adjustment direction (arrow C) and the pivot axis S. In FIG. 5, this plane runs perpendicular to the plane of the drawing and parallel to arrow C.
  • the sheet-metal section 5a is bent in the opposite direction to the sheet-metal section 5 by pivoting the bending beam 3 downward by 90 ° in the direction of the arrow F or clockwise.
  • the sheet 4 bent in the opposite direction at its edge can now be removed from the folding machine.
  • the swivel bending machine is brought back into its starting position according to FIG. 1 by correspondingly adjusting the bending cheek 3 along arrows E and F.
  • the bending beam 3 acts on the first sheet metal side during the first bending process and on the second sheet metal side during the second bending process, as shown in FIGS. 1 and 7 is evident.
  • the adjustment of the bending beam 3 in the first adjustment direction (along the arrow C; FIG. 3) is necessary in order to be able to transfer the bending beam 3 from the first to the second sheet metal side via the bent sheet metal section 5.
  • the bending beam 3 (see FIG. 4) passes over the projecting part of the top beam 2, the bending beam 3 must also move in the second direction of adjustment in the direction of arrow E. can also be adjusted (cf.
  • FIG. 5 so that it can in turn be placed on a sheet metal section 5a protruding between the lower beam and the upper beam (cf. FIG. 7).
  • These two mutually perpendicular, reciprocating adjustment movements of the bending beam 3 according to the arrows C, C ⁇ and E, are therefore essential for the method according to the invention and ultimately ensure that an opposite sheet metal bending is possible without turning the sheet.
  • FIG. 9 schematically shows a folding machine 10 which is structurally set up so that the bending method explained with reference to FIGS. 1 to 8 can be carried out on it.
  • FIG. 9 shows a front view of only the right side of such a folding machine 10. The other side is correspondingly mirror-symmetrical.
  • FIG. 9 the upper beam 2 and the bending beam 3, which are mounted on a machine frame, are shown.
  • the bending beam 3, which can be pivoted about the pivot axis S, in FIG. 9 conceals the lower beam 1, which is also mounted in the machine frame 11 and is visible in FIGS. 1 to 8.
  • the upper cheek 2 can be moved up and down in the direction of arrow G, which corresponds to the arrows A and A ⁇ in FIGS. 1 and 6, for tensioning and releasing the sheet metal 4.
  • the upper beam 2 is connected to a hydraulic cylinder 12 attached to the machine frame 11.
  • the pivoting movement of the bending beam 3 about the pivot axis S is indicated in FIG. 9 by the arrows H, which correspond to the arrows B, D, F in FIGS.
  • the pivoting of the bending beam 3 takes place with the aid of a motor 13 fastened to the machine frame 11.
  • a second rocker 16 is rotatably mounted about an axis 15.
  • the axis 15 lies below the pivot axis S.
  • a piston-cylinder unit 18 is provided, the cylinder 19 of which is rigidly connected to the bending cheek 3 and the piston rod 21 of which is connected to the foot 17 ,
  • the cylinder 19 can also be guided in a straight line along the arrows I on the second rocker 16.
  • the piston-cylinder unit 18 thus forms a guide for the bending beam 3 in such a way that when the unit 18 is actuated, the bending beam 3 can be displaced in a straight line relative to the second rocker 16, specifically away from the pivot axis S or onto it Axis too.
  • This first adjustment movement of the bending beam 3 is represented by the arrows I, which correspond to the arrows C, CL in FIGS. 3 and 7.
  • the second adjustment movement mentioned above which is perpendicular to the plane containing the first adjustment direction I and the pivot axis S (drawing plane of FIG. 9), is realized with the aid of the second rocker 16. If this is pivoted about the axis 15 with the aid of a drive motor 22 indicated by a broken line in FIG. 9, the bending beam 3 or at least the working surface thereof which engages the sheet to be bent is adjusted perpendicular to the plane of the drawing in FIG. 9 according to the arrow E in FIG. 5.
  • E RSATZ B LATT It is possible to design the straight guide formed by the piston-cylinder unit 18 in the embodiment according to FIG. 9 in a different way, for example by sliding the bending cheek 3, whereby this cheek 3 has a special drive device, e.g. B. an electric motor with gear spindle is assigned.
  • the second rocker 16 could - instead of being pivotable about the axis 15 - also in another way, for. B. also by a straight guide, slidably connected to the first rocker 14.
  • the constructive design of the folding machine 10 must ensure that the adjustment possibilities of the bending beam 3 are given in the first and second adjustment directions (arrows C and E) explained in detail above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

Un procédé de cintrage opposé d'une tôle comprend les opérations suivantes: on applique la joue de pliage d'une machine à cintrer oscillante sur une première face d'un tronçon de tôle et l'on plie celui-ci, selon un angle prédéterminé, dans un premier sens de rotation; on retire ensuite du tronçon de tôle replié, la joue de pliage dans un premier sens de déplacement, perpendiculairement à son axe de pivotement et l'on continue de l'incliner, dans le premier sens de rotation, jusqu'à ce qu'elle soit tournée vers la deuxième face de la tôle opposée à la première face; on déplace la joue de pliage dans un deuxième sens de déplacement perpendiculaire au premier; on applique la joue de pliage, après déplacement correspondant de la tôle repliée entre la joue inférieure et la joue supérieure de la machine à cintrer, sur la deuxième face de la tôle et l'on plie celle-ci selon un angle prédéterminé, par pivotement de la joue de pliage dans un deuxième sens de rotation opposé au premier. Dans la machine à cintrer pour la mise en oeuvre de ce procédé, la joue de pliage est montée de manière à pouvoir exécuter deux mouvements perpendiculaires entre eux dans les premier et deuxième sens de déplacement.A method of opposing bending of a sheet metal comprises the following operations: the bending cheek of an oscillating bending machine is applied to a first face of a section of sheet metal and it is bent at a predetermined angle , in a first direction of rotation; then withdrawn from the folded sheet section, the folding cheek in a first direction of movement, perpendicular to its pivot axis and it continues to tilt, in the first direction of rotation, until it either turned towards the second face of the sheet opposite to the first face; the folding cheek is moved in a second direction of movement perpendicular to the first; the folding cheek is applied, after corresponding displacement of the folded sheet between the lower cheek and the upper cheek of the bending machine, on the second face of the sheet and the latter is folded at a predetermined angle, by pivoting of the folding cheek in a second direction of rotation opposite to the first. In the bending machine for the implementation of this method, the folding cheek is mounted so as to be able to execute two movements perpendicular to each other in the first and second directions of movement.

Description

Verfahren zum gegenläufigen Biegen eines Bleches Method of bending sheet metal in opposite directions
Die Erfindung betrifft ein Verfahren nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a method according to the preamble of patent claim 1.
Bei den bekannten Blechbiegemaschinen, mit deren Hilfe ein solches Verfahren bisher ausgeführt wird, ist die Biege¬ wange nur in einer Arbeitsrichtung, also beispielsweise bei einer Verschwenkbewegung von unten nach oben im Uhr¬ zeigersinn verwendbar. Dies führt dazu, daß beim gegenläu¬ figen Blechbiegen, wobei also ein erster Blechabschnitt beispielsweise im Uhrzeigersinn und darauf folgend ein weiterer Blechabschnitt im Gegenuhrzeigersinn umgebogen werden soll, das Blech zwischen den einzelnen Biegevorgän¬ gen gewendet werden muß. Dies aber ist insbesondere dann, wenn große Blechtafeln von mehreren Metern Seitenlänge so umgedreht werden müssen, daß ihre Ober- zur Unterseite wird, ein umständlicher und zeitraubender Vorgang, der häufig auch durch an der Blechbiegemaschine vorgesehene, automatische Hantierungseinrichtungen behindert ist.In the known sheet metal bending machines, with the aid of which such a method has been carried out to date, the bending cheek can only be used in one working direction, for example in the case of a pivoting movement from bottom to top in a clockwise direction. This leads to the fact that, in the case of sheet metal bending in the opposite direction, that is to say a first sheet metal section, for example clockwise and then a further sheet metal section to be bent counterclockwise, the sheet metal must be turned between the individual bending processes. But this is especially when large metal sheets of several meters side length have to be turned so that their top to bottom, a cumbersome and time-consuming process, which is often hampered by automatic handling devices provided on the sheet metal bending machine.
Es ist Aufgabe der Erfindung, ein gattungsgemäßes Verfah¬ ren so zu verbessern, daß ein Wenden des Bleches zwischen zwei gegenläufigen Biegevorgängen vermieden werden kann. It is an object of the invention to improve a generic method in such a way that turning the sheet between two opposing bending processes can be avoided.
Die Aufgabe wird erfindungsgemäß durch die Verfahrens¬ schritte im Kennzeichnungsteil des Patentanspruchs 1 ge¬ löst.According to the invention, the object is achieved by the method steps in the characterizing part of patent claim 1.
Eine Schwenkbiegemaschine mit Maschinengestell, Unterwan¬ ge, Oberwange und Biegewange zur Durchführung des erfin¬ dungsgemäßen Verfahrens zeichnet sich dadurch aus, daß an beiden Stirnseiten der Biegewange jeweils eine erste Schwinge vorgesehen ist, die um die Schwenkachse der Bie¬ gewange schwenkbar ist, daß an der ersten Schwinge eine zweite Schwinge beweglich gelagert ist, und daß an der zweiten Schwinge eine Führung vorgesehen ist, welche eine senkrecht zur Schwenkachse verlaufende, im wesentlichen geradlinige Bewegung der Biegewange gestattet, die ihrer¬ seits im wesentlichen senkrecht zur Bewegungsrichtung der zweiten Schwinge verläuft.A folding machine with a machine frame, lower beam, upper beam and bending beam for carrying out the method according to the invention is characterized in that a first rocker is provided on both end faces of the bending beam, which can be pivoted about the pivot axis of the bending beam the first rocker has a second rocker movably mounted, and that a guide is provided on the second rocker, which permits a substantially rectilinear movement of the bending beam running perpendicular to the pivot axis, which in turn runs essentially perpendicular to the direction of movement of the second rocker.
Die nachstehende Beschreibung bevorzugter Ausführungsfor¬ men der Erfindung dient im Zusammenhang mit beiliegender Zeichnung der weiteren Erläuterung. Es zeigen:The following description of preferred embodiments of the invention serves in conjunction with the accompanying drawing for further explanation. Show it:
Figur 1 mehrere, nacheinander erfolgende bis 8 Schritte beim gegenläufigen Biegen eines Bleches undFigure 1 several successive to 8 steps in the opposite bending of a sheet and
Figur 9 eine Vorrichtung zur Durchführung einer gegenläufigen Blechbiegung entsprechend Figur 1 bis 8.FIG. 9 shows a device for carrying out a sheet metal bend in opposite directions corresponding to FIGS. 1 to 8.
Die Figuren 1 bis 8 zeigen jeweils schematisch die wesent¬ lichen Teile einer Schwenkbiegemaschine, nämlich eine Un¬ terwange 1, eine Oberwange 2 und eine Biegewange 3. Die Biegewange 3 ist am (nicht dargestellten) Maschinengestell drehbar- gelagert und um eine Schwenkachse S verschwenkbar, die in den Figuren 1 bis 8 senkrecht zur Zeichnungsebene verläuft.FIGS. 1 to 8 each schematically show the essential parts of a folding machine, namely a lower beam 1, an upper beam 2 and a bending beam 3. Die Bending beam 3 is rotatably mounted on the machine frame (not shown) and can be pivoted about a pivot axis S, which in FIGS. 1 to 8 runs perpendicular to the plane of the drawing.
Zwischen Unterwange 1 und Oberwange 2 ist durch Absenken der Oberwange 2 in Richtung des Pfeiles A ein Blech 4 ein¬ gespannt, welches mit einem Blechabschnitt 5 über die Wan¬ gen 1, 2 vorsteht. Die Biegewange 3 greift mit ihrer Ober¬ oder Biegefläche an der Unterseite des Blechabschnitts 5 an. Diese Seite wird im folgenden auch die erste Seite des Bleches 4 genannt, sie liegt der Ober- oder zweiten Seite des Bleches 4 gegenüber.Between lower cheek 1 and upper cheek 2, a sheet 4 is clamped by lowering the upper cheek 2 in the direction of arrow A, which protrudes with a sheet metal section 5 over the cheeks 1, 2. The bending cheek 3 engages with its upper or bending surface on the underside of the sheet metal section 5. This side is also called the first side of the sheet 4 in the following, it is opposite the upper or second side of the sheet 4.
Die Figur 1 stellt den Ausgangszustand des Biegeverfahrens dar. In einem ersten Biegeschritt wird die Biegewange 3 - vgl. Figur 2 - im Gegenuhrzeigersinn um 90° nach oben verschwenkt (Pfeil B), wodurch der Blechabschnitt 5 eben¬ falls im Gegenuhrzeigersinn nach oben abgebogen wird. Nun¬ mehr wird - vgl. Figur 3 - die Biegewange 3 in einer ers¬ ten Verstellrichtung (Pfeil C) senkrecht zu ihrer Schwenk¬ achse S vom abgebogenen Blechabschnitt 5 zurückgezogen, so daß sie - vgl. Figur 4 - unbehindert um diesen abgebogenen Blechabschnitt 5 herum weiter nach oben so weit ver¬ schwenkt werden kann (Pfeil D), bis sie nach einer Ver- schwenkung um insgesamt etwa 180° der zweiten oder Ober¬ seite des Bleches 4 zugekehrt ist. Die Verschwenkung der Biegewange 3 gemäß Figur 4 erfolgt wiederum um deren Schwenkachse S. Wie aus Figur 4 weiterhin hervorgeht, be¬ findet sich nunmehr die Biegewange 3 oberhalb der das Blech 4 festspannenden Oberwange 2, so daß die Biegewange 3 bei einer senkrechten Absenkung aus dieser Stellung auf die Oberwange 2 und nicht auf das Blech 4 treffen würde. Ausgehend von der Position nach Figur 4 wird anschließend - vgl. Figur 5 - die Biegewange 3 in einer zweiten Vers¬ tellrichtung entlang dem Pfeil E verschoben, bis sie au¬ ßerhalb des Bereiches der Oberwange 2 gelangt und auf ei¬ nen vorstehenden Blechabschnitt, der zwischen Unterwange 1 und Oberwange 2 herausragt, abgesenkt werden kann.FIG. 1 shows the initial state of the bending process. In a first bending step, the bending beam 3 - cf. Figure 2 - pivoted counterclockwise by 90 ° upwards (arrow B), whereby the sheet metal section 5 is also bent counterclockwise upwards. Now more - cf. FIG. 3 - the bending beam 3 is pulled back from the bent sheet metal section 5 in a first adjustment direction (arrow C) perpendicular to its pivot axis S, so that it - cf. FIG. 4 - can be pivoted freely around this bent sheet metal section 5 further upwards (arrow D) until, after pivoting by a total of approximately 180 °, it faces the second or upper side of the sheet 4. The pivoting cheek 3 according to FIG. 4 in turn takes place about its pivot axis S. As can further be seen from FIG. 4, the bending cheek 3 is now located above the upper cheek 2 which clamps the sheet metal 4, so that the bending cheek 3 is lowered vertically therefrom Position on the upper cheek 2 and would not hit the sheet 4. Starting from the position according to FIG. 4, then - cf. Figure 5 - the bending beam 3 shifted in a second direction of adjustment along the arrow E until it reaches the area of the upper beam 2 and can be lowered onto a projecting sheet metal section which protrudes between the lower beam 1 and the upper beam 2.
Die Verstellrichtungen der Biegewange 3 entsprechend den Pfeilen C und E in Figur 3 bzw. 5 verlaufen nur scheinbar parallel zueinander. In Wirklichkeit verläuft der Pfeil C stets parallel zur kleinen und der Pfeil E stets parallel zur großen Seite des die Biegewange 3 auf der Zeichnung schematisch darstellenden Rechtecks. Die beiden Verstell¬ richtungen gemäß den Pfeilen C und E stehen also immer senkrecht aufeinander, und der Pfeil C hat sich beim Über¬ gang von Figur 3 nach Figur 4 und 5 ebenfalls um 90° mit- verschwenkt, wie dies in Figur 5 gestrichelt angedeutet ist.The adjustment directions of the bending cheek 3 according to the arrows C and E in FIGS. 3 and 5 run only apparently parallel to one another. In reality, the arrow C always runs parallel to the small side and the arrow E always runs parallel to the large side of the rectangle schematically representing the bending beam 3 in the drawing. The two adjustment directions according to the arrows C and E are therefore always perpendicular to one another, and the arrow C has also pivoted through 90 ° during the transition from FIG. 3 to FIGS. 4 and 5, as indicated by the broken line in FIG is.
Um die räumliche Lage der zweiten Verstellrichtung ent¬ sprechend dem Pfeil E zu definieren, kann man auch sagen, daß diese Verstellrichtung (Pfeil E) senkrecht zu der die erste Verstellrichtung (Pfeil C) und die Schwenkachse S enthaltenden Ebene läuft. Diese Ebene verläuft in Figur 5 senkrecht zur Zeichnungsebene und parallel zum Pfeil C.In order to define the spatial position of the second adjustment direction according to arrow E, it can also be said that this adjustment direction (arrow E) runs perpendicular to the plane containing the first adjustment direction (arrow C) and the pivot axis S. In FIG. 5, this plane runs perpendicular to the plane of the drawing and parallel to arrow C.
Nachdem die Biegewange 3 die in Figur 5 dargestellte Stel¬ lung erreicht hat, wird - vgl. Figur 6 - nach entsprechen¬ dem Anheben der Oberwange 2 (Pfeil A-^) das Blech 4 nach rechts vorgeschoben, so daß sich wiederum ein vorstehender Blechabschnitt 5a ergibt, der an den bereits abgebogenen Blechabschnitt 5 anschließt. Wenn das Blech 4 in die Posi¬ tion gemäß Figur 6 vorgeschoben ist, wird die Oberwange 2 wieder abgesenkt (Pfeil A) und das Blech 4 zwischen Unter¬ wange 1 und Oberwange 2 festgespannt. Hierauf wird - vgl. Figur 7 - durch Verschieben in Richtung des Pfeiles C-^ die Biegewange 3 an die Ober- oder zweite Blechseite angelegt. Die Verstellrichtung entsprechend dem Pfeil C-^ ist paral¬ lel zum Pfeil C, jedoch entgegengesetzt gerichtet.After the bending beam 3 has reached the position shown in FIG. 5, - cf. 6 - after the upper cheek 2 has been raised accordingly (arrow A ^), the sheet 4 is advanced to the right, so that again a protruding sheet section 5a results, which on the already bent Sheet metal section 5 connects. When the sheet 4 is advanced into the position according to FIG. 6, the upper beam 2 is lowered again (arrow A) and the sheet 4 is clamped between the lower beam 1 and the upper beam 2. Then - cf. Figure 7 - by moving in the direction of arrow C- ^ the bending beam 3 placed on the upper or second sheet side. The direction of adjustment according to the arrow C- ^ is parallel to the arrow C, but directed in the opposite direction.
Schließlich wird, wie aus Figur 8 hervorgeht, durch Ver¬ schwenken der Biegewange 3 um 90° in Richtung des Pfeiles F nach unten oder im Uhrzeigersinn der Blechabschnitt 5a gegenläufig zum Blechabschnitt 5 abgebogen. Das so an sei¬ nem Rand gegenläufig abgebogene Blech 4 kann nunmehr aus der Schwenkbiegemaschine entnommen werden. Die Schwenkbie¬ gemaschine wird durch entsprechendes Verstellen der Biege¬ wange 3 entlang den Pfeilen E und F in ihre Ausgangsposi¬ tion gemäß Figur 1 zurückgebracht.Finally, as can be seen from FIG. 8, the sheet-metal section 5a is bent in the opposite direction to the sheet-metal section 5 by pivoting the bending beam 3 downward by 90 ° in the direction of the arrow F or clockwise. The sheet 4 bent in the opposite direction at its edge can now be removed from the folding machine. The swivel bending machine is brought back into its starting position according to FIG. 1 by correspondingly adjusting the bending cheek 3 along arrows E and F.
Für die Durchführung des anhand der Figuren 1 bis 8 erläu¬ terten, erfindungsgemäßen Blechbiegeverfahrens ist es we¬ sentlich, daß die Biegewange 3 beim ersten Biegevorgang an der ersten und beim zweiten Biegevorgang an der zweiten Blechseite angreift, wie dies aus Figur 1 bzw. 7 ersicht¬ lich ist. Hierzu ist zum einen die Verstellung der Biege¬ wange 3 in der ersten Verstellrichtung (entlang dem Pfeil C; Figur 3) erforderlich, um die Biegewange 3 über den ab¬ gebogenen Blechabschnitt 5 heraus von der ersten auf die zweite Blechseite überführen zu können. Da dabei aber die Biegewange 3 (vgl. Figur 4) über den vorspringenden Teil der Oberwange 2 gelangt, muß zum anderen die Biegewange 3 in der zweiten Verstellrichtung in Richtung des Pfeiles E zusätzlich verstellt werden (vgl. Figur 5), so daß sie wiederum auf einen zwischen Unterwange und Oberwange vor¬ stehenden Blechabschnitt 5a angelegt werden kann (vgl. Figur 7). Diese beiden senkrecht aufeinander stehenden, hin- und hergehenden Verstellbewegungen der Biegewange 3 entsprechend den Pfeilen C, C^ und E, sind also für das erfindungsgemäße Verfahren wesentlich und gewährleisten letzten Endes, daß ein gegenläufiges Blechbiegen ohne Wen¬ den des Bleches möglich ist.For the implementation of the sheet metal bending method according to the invention explained with reference to FIGS. 1 to 8, it is essential that the bending beam 3 acts on the first sheet metal side during the first bending process and on the second sheet metal side during the second bending process, as shown in FIGS. 1 and 7 is evident. For this purpose, on the one hand, the adjustment of the bending beam 3 in the first adjustment direction (along the arrow C; FIG. 3) is necessary in order to be able to transfer the bending beam 3 from the first to the second sheet metal side via the bent sheet metal section 5. However, since the bending beam 3 (see FIG. 4) passes over the projecting part of the top beam 2, the bending beam 3 must also move in the second direction of adjustment in the direction of arrow E. can also be adjusted (cf. FIG. 5) so that it can in turn be placed on a sheet metal section 5a protruding between the lower beam and the upper beam (cf. FIG. 7). These two mutually perpendicular, reciprocating adjustment movements of the bending beam 3 according to the arrows C, C ^ and E, are therefore essential for the method according to the invention and ultimately ensure that an opposite sheet metal bending is possible without turning the sheet.
In Figur 9 ist schematisch eine Schwenkbiegemaschine 10 dargestellt, die konstruktiv so eingerichtet ist, daß sich an ihr das anhand der Figuren 1 bis 8 erläuterte Biegever¬ fahren durchführen läßt. Die Figur 9 zeigt in Vorderan¬ sicht lediglich die rechte Seite einer solchen Schwenkbie¬ gemaschine 10. Die andere Seite ist in entsprechender Wei¬ se spiegelsymmetrisch ausgebildet.FIG. 9 schematically shows a folding machine 10 which is structurally set up so that the bending method explained with reference to FIGS. 1 to 8 can be carried out on it. FIG. 9 shows a front view of only the right side of such a folding machine 10. The other side is correspondingly mirror-symmetrical.
In Figur 9 sind die Oberwange 2 sowie die Biegewange 3, die an einem Maschinengestell gelagert sind, dargestellt. Die Biegewange 3, welche um die Schwenkachse S verschwenk¬ bar ist, verdeckt in Figur 9 die ebenfalls im Maschinenge¬ stell 11 gelagerte Unterwange 1, die in Figur 1 bis 8 sichtbar ist. Die Oberwange 2 ist zum Spannen und Lösen des Bleches 4 in Richtung des Pfeiles G, der den Pfeilen A und A^ in Figur 1 bzw. 6 entspricht, auf- und abbeweglich. Hierzu ist die Oberwange 2 mit einem am Maschinengestell 11 befestigten Hydraulikzylinder 12 verbunden. Die Schwenkbewegung der Biegewange 3 um die Schwenkachse S ist in Figur 9 durch die Pfeile H angedeutet, die den Pfeilen B, D, F in Figur 2, 4 bzw. 8 entsprechen. Die VerSchwenkung der Biegewange 3 erfolgt mit Hilfe eines am Maschinengestell 11 befestigten Motors 13. Dieser greift an einer um die Schwenkachse S schwenkbar gelager¬ ten, ersten Schwinge 14 an und kann diese senkrecht zur Zeichnungsebene der Figur 9 hin- und herverschwenken. An der ersten Schwinge 14 ist um eine Achse 15 drehbar eine zweite Schwinge 16 gelagert. Die Achse 15 liegt unterhalb der Schwenkachse S. Zwischen einem vorstehenden Fuß 17 der zweiten Schwinge 16 und der Biegewange 3 ist ein Kolben- Zylinder-Aggregat 18 vorgesehen, dessen Zylinder 19 mit der Biegewange 3 und dessen Kolbenstange 21 mit dem Fuß 17 starr verbunden sind, wobei der Zylinder 19 zusätzlich entlang der Pfeile I an der zweiten Schwinge 16 geradlinig geführt sein kann. Das Kolben-Zylinder-Aggregat 18 bildet auf diese Weise eine Führung für die Biegewange 3 in der Weise, daß bei Betätigung des Aggregats 18 die Biegewange 3 relativ zur zweiten Schwinge 16 geradlinig verschoben werden kann, und zwar von der Schwenkachse S weg oder auf diese Achse zu. Diese erste Verstellbewegung der Biegewan¬ ge 3 wird durch die Pfeile I dargestellt, die den Pfeilen C, C-L in Figur 3 bzw. 7 entsprechen.In Figure 9, the upper beam 2 and the bending beam 3, which are mounted on a machine frame, are shown. The bending beam 3, which can be pivoted about the pivot axis S, in FIG. 9 conceals the lower beam 1, which is also mounted in the machine frame 11 and is visible in FIGS. 1 to 8. The upper cheek 2 can be moved up and down in the direction of arrow G, which corresponds to the arrows A and A ^ in FIGS. 1 and 6, for tensioning and releasing the sheet metal 4. For this purpose, the upper beam 2 is connected to a hydraulic cylinder 12 attached to the machine frame 11. The pivoting movement of the bending beam 3 about the pivot axis S is indicated in FIG. 9 by the arrows H, which correspond to the arrows B, D, F in FIGS. 2, 4 and 8. The pivoting of the bending beam 3 takes place with the aid of a motor 13 fastened to the machine frame 11. This engages on a first rocker 14 pivotably mounted about the pivot axis S and can pivot it back and forth perpendicular to the plane of the drawing in FIG. On the first rocker 14, a second rocker 16 is rotatably mounted about an axis 15. The axis 15 lies below the pivot axis S. Between a projecting foot 17 of the second rocker 16 and the bending cheek 3, a piston-cylinder unit 18 is provided, the cylinder 19 of which is rigidly connected to the bending cheek 3 and the piston rod 21 of which is connected to the foot 17 , The cylinder 19 can also be guided in a straight line along the arrows I on the second rocker 16. The piston-cylinder unit 18 thus forms a guide for the bending beam 3 in such a way that when the unit 18 is actuated, the bending beam 3 can be displaced in a straight line relative to the second rocker 16, specifically away from the pivot axis S or onto it Axis too. This first adjustment movement of the bending beam 3 is represented by the arrows I, which correspond to the arrows C, CL in FIGS. 3 and 7.
Die weiter oben erwähnte zweite Verstellbewegung, die senkrecht zu der die erste Verstellrichtung I und die Schwenkachse S enthaltenden Ebene (Zeichnungsebene der Figur 9) erfolgt, wird mit Hilfe der zweiten Schwinge 16 realisiert. Wenn diese mit Hilfe eines in Figur 9 gestri¬ chelt angedeuteten Antriebsmotors 22 um die Achse 15 ver¬ schwenkt wird, verstellt sich die Biegewange 3 oder zumin¬ dest deren an dem zu biegenden Blech angreifende Arbeits¬ fläche senkrecht zur Zeichnungsebene der Figur 9 entspre¬ chend dem Pfeil E in Figur 5.The second adjustment movement mentioned above, which is perpendicular to the plane containing the first adjustment direction I and the pivot axis S (drawing plane of FIG. 9), is realized with the aid of the second rocker 16. If this is pivoted about the axis 15 with the aid of a drive motor 22 indicated by a broken line in FIG. 9, the bending beam 3 or at least the working surface thereof which engages the sheet to be bent is adjusted perpendicular to the plane of the drawing in FIG. 9 according to the arrow E in FIG. 5.
ERSATZBLATT Es ist möglich, die bei der Ausführungsform nach Figur 9 durch das Kolben-Zylinder-Aggregat 18 gebildete Geradfüh¬ rung auch in anderer Weise auszubilden, beispielsweise durch eine Gleitführung der Biegewange 3, wobei dieser Wange 3 eine besondere Antriebsvorrichtung, z. B. ein Elektromotor mit Getriebespindel, zugeordnet wird. Die zweite Schwinge 16 könnte - statt um die Achse 15 schwenk¬ bar zu sein - auch in anderer Weise, z. B. ebenfalls durch eine Geradführung, verschieblich mit der ersten Schwinge 14 verbunden werden. In jedem Fall muß durch die konstruk¬ tive Ausbildung der Schwenkbiegemaschine 10 gewährleistet sein, daß die Verstellmöglichkeiten der Biegewange 3 in den oben im einzelnen erläuterten, ersten und zweiten Ver¬ stellrichtungen (Pfeile C und E) gegeben sind. E RSATZ B LATT It is possible to design the straight guide formed by the piston-cylinder unit 18 in the embodiment according to FIG. 9 in a different way, for example by sliding the bending cheek 3, whereby this cheek 3 has a special drive device, e.g. B. an electric motor with gear spindle is assigned. The second rocker 16 could - instead of being pivotable about the axis 15 - also in another way, for. B. also by a straight guide, slidably connected to the first rocker 14. In any case, the constructive design of the folding machine 10 must ensure that the adjustment possibilities of the bending beam 3 are given in the first and second adjustment directions (arrows C and E) explained in detail above.

Claims

P a t e n t a n s p r ü c h eP a t e n t a n s r u c h e
Verfahren zum gegenläufigen Biegen eines Bleches mit einer Schwenkbiegemaschine unter Einspannen des Ble¬ ches zwischen einer Unter- und einer Oberwange und Verbiegen eines über diese Wangen vorstehenden Blech¬ abschnittes um einen vorgegebenen Schwenkwinkel mit Hilfe einer an diesem Blechabschnitt angreifenden, um eine Schwenkachse verschwenkbaren Biegewange, wobei man in einem ersten Schritt die Biegewange an eine erste Seite des vorstehenden Blechabschnitts anlegt und diesen um einen vorgegebenen Winkel durch Ver¬ schwenken der Biegewange in einer ersten Drehrichtung (B) abbiegt, gekennzeichnet durch folgende weitere Schritte: a) man zieht nach dem ersten Schritt die Biegewange in einer ersten Verstellrichtung (C) senkrecht zu ihrer Schwenkachse (S) vom abgebogenen Blechab¬ schnitt zurück und verschwenkt sie in der ersten Drehrichtung weiter, bis sie nach einer Verschwen- kung um insgesamt 180° der zweiten Seite des Ble¬ ches zugekehrt ist, welche der ersten Blechseite gegenüberliegt (Figur 3 und 4); b) man verstellt nunmehr die Biegewange in einer zweiten Verstellrichtung (E), die im wesentlichen senkrecht zu der* die erste Verstellrichtung (C) und die Schwenkachse (S) enthaltenden Ebene ver¬ läuft, derart, daß die Biegewange durch VerstellenMethod for bending a sheet in opposite directions with a swivel bending machine by clamping the sheet between a lower and an upper cheek and bending a sheet metal section projecting over these cheeks by a predetermined swivel angle with the aid of a bending cheek engaging on this sheet metal section and pivotable about a swivel axis, in a first step the bending cheek is placed on a first side of the projecting sheet metal section and this is bent by a predetermined angle by pivoting the bending cheek in a first direction of rotation (B), characterized by the following further steps: a) one pulls after the first Step the bending beam back in a first adjustment direction (C) perpendicular to its pivot axis (S) from the bent sheet metal section and pivot it further in the first direction of rotation until after a total 180 ° pivoting of the second side of the sheet metal is facing which is opposite the first sheet metal side t (Figures 3 and 4); b) the bending beam is now adjusted in a second adjustment direction (E), which is essentially perpendicular to the plane containing the first adjustment direction (C) and the pivot axis (S), in such a way that the bending beam is adjusted
ERSATZBLATT in der ersten Verstellrichtung an die zweite Seite des Bleches anlegbar ist (Figur 5); c) man legt schließlich nach entsprechender Verschie¬ bung des abgebogenen Bleches (Figur 6) zwischen Unter- und Oberwange die Biegewange durch Verstel¬ len (C-, ) in der ersten Verstellrichtung an die zweite Seite des vorstehenden Blechabschnitts an und biegt diesen um einen vorgegebenen Winkel durch Verschwenken der Biegewange in einer zur ersten Drehrichtung entgegengesetzten zweiten Drehrichtung (F) ab (Figur 7 und 8).REPLACEMENT LEAF can be placed on the second side of the sheet in the first adjustment direction (FIG. 5); c) finally, after a corresponding displacement of the bent sheet (FIG. 6) between the lower and upper cheek, the bending cheek is placed on the second side of the protruding sheet section by adjusting (C-,) in the first adjustment direction and is bent by one predetermined angle by pivoting the bending beam in a second direction of rotation (F) opposite to the first direction of rotation (FIGS. 7 and 8).
Schwenkbiegemaschine mit Maschinengestell, Unterwan¬ ge, Oberwange und Biegewange zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß an beiden Stirnseiten der Biegewange (3) jeweils eine erste Schwinge (14) vorgesehen ist, die um die Schwenkachse (S) der Biegewange (3) schwenkbar ist, daß an der ersten Schwinge (14) eine zweite Schwinge (16) beweglich gelagert ist, und daß an der zweiten Schwinge (16) eine Führung (18) vorgesehen ist, wel¬ che eine senkrecht zur Schwenkachse (S) verlaufende, im wesentlichen geradlinige Bewegung der Biegewange (3) gestattet, die ihrerseits im wesentlichen senk¬ recht zur Bewegungsrichtung der zweiten Schwinge (16) verläuft. Swivel bending machine with machine frame, Unterwan¬ ge, upper cheek and bending cheek for carrying out the method according to claim 1, characterized in that on both ends of the bending cheek (3) a first rocker arm (14) is provided, which about the pivot axis (S) of the bending cheek (3) it can be pivoted that a second rocker (16) is movably mounted on the first rocker (14) and that a guide (18) is provided on the second rocker (16) which is perpendicular to the pivot axis (p ) running, essentially rectilinear movement of the bending cheek (3), which in turn runs essentially perpendicular to the direction of movement of the second rocker (16).
EP90913054A 1989-10-26 1990-08-30 Process for the two-directional bending of sheet metal Expired - Lifetime EP0497780B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90913054T ATE96062T1 (en) 1989-10-26 1990-08-30 PROCEDURE FOR REVERSE BENDING OF A SHEET METAL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3935658 1989-10-26
DE3935658A DE3935658A1 (en) 1989-10-26 1989-10-26 METHOD FOR TURNING A SHEET OPTIMALLY

Publications (2)

Publication Number Publication Date
EP0497780A1 true EP0497780A1 (en) 1992-08-12
EP0497780B1 EP0497780B1 (en) 1993-10-20

Family

ID=6392261

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90913054A Expired - Lifetime EP0497780B1 (en) 1989-10-26 1990-08-30 Process for the two-directional bending of sheet metal

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EP (1) EP0497780B1 (en)
JP (1) JP3122126B2 (en)
CA (1) CA2067732C (en)
DE (2) DE3935658A1 (en)
DK (1) DK0497780T3 (en)
ES (1) ES2046795T3 (en)
WO (1) WO1991006383A1 (en)

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Publication number Priority date Publication date Assignee Title
US10427893B2 (en) 2013-06-27 2019-10-01 Ras Reinhardt Maschinenbau Gmbh Handling device and bending installation and method for bending a part to be bent

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DE102006047108B4 (en) * 2006-09-27 2009-09-10 Ras Reinhardt Maschinenbau Gmbh Bending machine for bending flat material
DE102007039848B4 (en) * 2007-08-23 2009-10-15 Hans Schröder Maschinenbau GmbH Swivel bending machine for bending a workpiece from sheet metal
JP6269514B2 (en) * 2015-01-13 2018-01-31 トヨタ自動車株式会社 Power line bending method
KR101933532B1 (en) 2018-09-28 2018-12-28 한용운 Panel bending apparatus for door and method for bending a panel for a door using the same
DE102019008118B4 (en) * 2019-11-21 2022-09-15 Wolfram Hochstrate Swivel bending machine, especially for counter bending with a duplex folding beam
CN111036737B (en) * 2019-11-26 2021-08-27 歌尔股份有限公司 Bending and pressing device and bending and pressing method

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CH392434A (en) * 1963-08-13 1965-05-31 Puell Werner Von Storage for long bending loads on folding machines
FR2502518A1 (en) * 1981-03-26 1982-10-01 Favrin Pierre Folding press for return bends in sheet metal - has folding plate pivoting in two planes against bolster
FR2597398B1 (en) * 1986-04-16 1990-12-07 Favrin Pierre PIVOTING APRON BENDING PRESS
FR2630356A1 (en) * 1988-04-20 1989-10-27 Dimeco Alipresse FOLDING MACHINE

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Publication number Priority date Publication date Assignee Title
US10427893B2 (en) 2013-06-27 2019-10-01 Ras Reinhardt Maschinenbau Gmbh Handling device and bending installation and method for bending a part to be bent

Also Published As

Publication number Publication date
EP0497780B1 (en) 1993-10-20
DE59003171D1 (en) 1993-11-25
WO1991006383A1 (en) 1991-05-16
DE3935658A1 (en) 1991-05-02
JP3122126B2 (en) 2001-01-09
CA2067732C (en) 2000-02-15
JPH05500774A (en) 1993-02-18
DK0497780T3 (en) 1993-11-29
CA2067732A1 (en) 1991-04-27
ES2046795T3 (en) 1994-02-01

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