EP0843605B1 - Sheet metal bending device - Google Patents

Sheet metal bending device Download PDF

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Publication number
EP0843605B1
EP0843605B1 EP96915022A EP96915022A EP0843605B1 EP 0843605 B1 EP0843605 B1 EP 0843605B1 EP 96915022 A EP96915022 A EP 96915022A EP 96915022 A EP96915022 A EP 96915022A EP 0843605 B1 EP0843605 B1 EP 0843605B1
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EP
European Patent Office
Prior art keywords
cheek
bending
pivot axis
shaft
distance
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
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EP96915022A
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German (de)
French (fr)
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EP0843605A1 (en
Inventor
Wolfgang Kutschker
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Reinhardt Maschinenbau GmbH
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Reinhardt Maschinenbau GmbH
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Publication of EP0843605A1 publication Critical patent/EP0843605A1/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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • B21D5/042—With a rotational movement of the bending blade

Definitions

  • the invention relates to a device for bending a Sheets with a machine frame, with a lower beam, with an upper cheek that is adjustable relative to the lower cheek and with a pivotable about a swivel axis fixed to the machine frame Bending beam, whose distance from the swivel axis is adjustable is.
  • a device of this type is known from DE 39 35 659 C2.
  • each The trap is a separate one in the known device Guide and drive device required to adjust the distance of the bending beam from its swivel axis to effect, which naturally complicates the overall device and becomes complex.
  • the device includes as essential components a stationary machine frame 1, one (particularly visible in FIG. 2) usually stationary lower beam 2, one adjustable relative to lower beam 2 Upper beam 3 and one around a machine frame fixed Swivel axis S in the direction of the double arrow B back and forth Bending beam 4.
  • Upper beam 3 is in the direction the arrow X relative to the lower beam 2 so adjustable that between lower beam 2 and upper beam 3 in the direction of arrow Y.
  • Sheet 5 inserted and placed against a stop 6 can be.
  • Fig. 3 shows schematically the bending beam 4, which by means of a rigidly connected to it shaft 8 and a roller bearing 9 (on both sides) is pivotally mounted in the machine frame 1.
  • the Shaft 8 is enclosed by a brake sleeve 11, which with high sliding adhesion value on the outside of the shaft 8, so that to effect a relative rotation between the shaft 8 and the brake sleeve 11 requires a certain torque is.
  • the brake sleeve 11 is fixed on its outside with a Eccentric member 12 connected, the outside of the roller bearing 9th circulates.
  • the eccentric member 12 has an eccentric to the pivot axis S. Hole on which shaft 8 penetrates.
  • the central axis of the roller bearing 9 coincides with the pivot axis S the bending beam 4 together.
  • To the pivot axis S is the Center axis T of the shaft rigidly connected to the bending beam 4 8, as indicated in Fig. 3, at a certain distance.
  • This Distance is 12 depending on the angular position of the eccentric member changeable relative to shaft 8 and thus optionally adjustable. Therefore, by appropriate rotation of the eccentric 12 a distance component (from e.g. a few mm) in the direction of the arrow Z (FIG. 2), whereby a (slight) adjustment of the shaft 8 and thus the Bending beam 4 in a direction perpendicular to the plane of the drawing 3 is irrelevant.
  • the eccentric member 12 is by screws 13 with a washer 14 rigidly connected, so that by turning the disc 14 Eccentric member 12 can be adjusted relative to the shaft 8.
  • the disc 14 is adjusted before the beginning of the bending process by a corresponding swiveling movement of the bending beam 4 with the disc 14 held, which in detail below will be explained later.
  • the shaft 8 is over the machine frame 1 extended (to the left in Fig. 3) and carries a drive unit, indicated only schematically 15, which in a manner yet to be described cannot be rotated on the machine frame is held and the drive of the shaft 8 and so that the bending beam 4 serves.
  • the drive unit 15 includes an electric motor (visible in FIG. 5) in a conventional manner 16 and a slip-on gear 17, which by means of a driven hollow shaft 18 on the extension of the shaft 8 is plugged in, the hollow shaft 18 rotatably (via a Key) is connected to the extension of the shaft 8.
  • the disc 14 is part of a locking device for the Eccentric member 12 relative to the shaft 8, so that, as already mentioned, with held eccentric member 12 and a twist the wave 8 overcoming self-locking a relative adjustment between eccentric member 12 and shaft 8 between these two parts and therefore an attitude the distance of the bending beam 4 from its pivot axis S is possible.
  • the disk 14 has on its peripheral edge, as shown in FIG. 4, a notch 22, into which a retaining pin 23 penetrate can, which is held stationary on the machine frame 1, so that hereby the disc 14 is prevented from rotating.
  • the holding pin 23, which is another part of the locking device is (perpendicular to the plane of the drawing in FIG. 4) of a lever 24, which is about an axis of rotation fixed to the machine frame 25 is pivotable. 4 is with solid lines that position of the lever 24 shown in which the Retaining pin 23 has penetrated into the notch 22 and hereby the disc 14 fixed. 4 with dash-dotted lines Lines shown position of the lever 24 is the Retaining pin 23 disengaged from the notch 22 so that the disc 14 and thus the eccentric member 12 and the shaft 8 can be rotated together with the bending beam 4.
  • the bending beam 4 is first in the dashed line shown, directed vertically downwards Position, and the washer 14 is through the in the notch 22 penetrated retaining pin 23 fixed. If now the Bending beam 4 from this zero or starting position Direction of arrow B is pivoted counterclockwise, takes place also because of the disc 14 Eccentric 12 a relative movement between this and the shaft 8 and thus a desired adjustment of the distance between the bending beam 4 and the pivot axis S instead.
  • Fig. 4 shows an arrangement which is an automatic introduction of the holding pin 23 in the notch 22 then always allows when the bending beam 4 in its downward direction Starting position is.
  • the upper cheek 3 which is also shown in dashed lines in Fig. 4 is about an axis of rotation 26 fixed to the machine frame (via a drive motor, not shown) pivotable, so that the end facing the lower beam 2 (essentially in the direction of the arrow X) shown in Fig. 2 the lower beam 2 can lift off.
  • arm 27 With the upper beam 3 is rigid an arm 27 connected, corresponding to the pivoting movements the upper cheek participates.
  • arm 27 is one thing End of a rod 28 articulated, which is a relative penetrates wide bore in the lever 24.
  • a coil spring 31 arranged the lever 24 (in Fig. 4) counterclockwise preloaded.
  • the connection between lever 24 and Rod 28 is so elastic that the lever 24 is relative to the rod 28 and thus to the arm 27 a limited free movement (clockwise).
  • FIG. 4 The arrangement in Fig. 4 is such that already at a partial pivoting back of the upper beam 3 in the direction in its closed position, the holding pin 23 from the notch 22 emerges again, long before the end of the upper cheek 3 rests firmly on the lower beam 2, so that before another sheet to be bent between lower beam 2 and upper beam 3 can be introduced according to FIG. 2.
  • the disk 14 has on its peripheral edge in addition to the notch 22, two steps 32, 33 on the angular distances from each other and from the notch 22 of 120 °.
  • the peripheral edge portion between the notch 22 and step 32 is circular while the peripheral edge portions between levels 32, 33 and between Level 33 and the notch 22 roughly the shape of involute have, as can be seen from the illustration of FIG. 4.
  • the disc 14 relative to the bending beam 4 plays the following process: the upper beam 3 is shown in the position lifted from the lower beam 2.
  • the spring 31 acts as an elastic compensation if the pivoting movement of the lever 24 due to the lack of radial penetration of the holding pin 23 into the notch 22 or one of the steps 32, 33 its full Cannot perform movement.
  • the Bending beam 4 driving electric motor 16 (Fig. 5) a pivoting the bending beam in a counterclockwise direction arrow B over a little more than 120 °.
  • FIG. 5 shows the anchoring of the shaft 8 of the bending beam 4 driving electric motor 16 with shaft 17 on the machine frame 1.
  • This anchoring must be articulated because the motor 16 via the slip-on gear 17 directly onto the shaft 8 is attached and thus the eccentric 12, participates in eccentric rotary movements of this shaft 8.
  • This eccentric movement takes place in the plane of the drawing of Fig. 5.
  • the lever linkage develop its flexibility in this plane and embrace it Purpose two levers in this plane, namely one first lever 34 rigidly connected to the plug-on gear 17 and a lever 35 articulated thereon, which in turn is connected to the Machine frame 1 is articulated.
  • the Invention encloses the eccentric 12, the shaft 8 of the Bending beam 4 and is with the roller bearing 9 in the machine frame rotatably mounted.
  • other arrangements would also be of the eccentric to adjust the distance of the bending beam possible from its pivot axis, if only when determined Eccentric link by pivoting the bending cheek Distance of the bending beam from its swivel axis is adjustable.
  • the holding pin is also 23 of the locking device by moving the Upper beam 3 actuated.
  • other existing, driven parts of the machine are used anyway be, for example, an optionally adjustable lower beam.
  • Fixing the substantially from the disc 14 with the Notch 22 and the movable retaining pin 23 existing Locking device is in the illustrated embodiment by latching the retaining pin 23 into the notch 22 accomplished.
  • Modifications are also conceivable here, for example the use of a clamping device with which the one Part of the locking device forming disc 14 in a predetermined angular position can be clamped.
  • the design and arrangement of the eccentric member shown in Fig. 3 12 is also mirror-symmetrical on the opposite one Side of the bending beam 4 provided on the machine frame 1, including the locking device, however without drive unit 15, which is only on one side the device is required.
  • the described device for bending a sheet is preferred with a programmable controller, e.g. one CNC control, equipped with the help of which in particular the locking device of the disc 14 and thus the eccentric member 12 actuated and the distance of the bending beam 4 from the pivot axis S automatically set in the manner described becomes.
  • a programmable controller e.g. one CNC control

Abstract

A sheet metal bending device comprising a machine frame, a lower cheek, an upper cheek adjustable relative to the lower cheek, and a bending cheek which is pivotable about a pivot axis fixed on the machine frame and whose distance from the pivot axis is adjustable, comprises the following features: an eccentric member for adjusting the distance of the bending cheek from its pivot axis, and an immobilizing mechanism for immobilizing the eccentric member in a predetermined angular position, the distance of the bending cheek from its pivot axis being adjustable by pivoting the bending cheek while the eccentric member is immobilized.

Description

Die Erfindung betrifft eine Vorrichtung zum Biegen eines Bleches mit einem Maschinengestell, mit einer Unterwange, mit einer relativ zur Unterwange einstellbaren Oberwange und mit einer um eine maschinengestellfeste Schwenkachse verschwenkbaren Biegewange, deren Abstand von der Schwenkachse verstellbar ist.The invention relates to a device for bending a Sheets with a machine frame, with a lower beam, with an upper cheek that is adjustable relative to the lower cheek and with a pivotable about a swivel axis fixed to the machine frame Bending beam, whose distance from the swivel axis is adjustable is.

Eine Vorrichtung dieser Art ist aus DE 39 35 659 C2 bekannt. Bei der bekannten Vorrichtung ist es möglich, den Abstand der Biegewange von ihrer Schwenkachse während des Biegevorgangs zu verstellen. Dieser Abstand kann aber auch vor Beginn eines Biegevorganges, z.B. in Abhängigkeit von der Blechdicke, auf einen passenden konstanten Wert eingestellt werden. In jedem Falle ist bei der bekannten Vorrichtung eine eigene, separate Führungs- und Antriebseinrichtung erforderlich, um die Verstellung des Abstandes der Biegewange von ihrer Schwenkachse zu bewirken, wodurch die Gesamtvorrichtung naturgemäß kompliziert und aufwendig wird.A device of this type is known from DE 39 35 659 C2. In the known device, it is possible to determine the distance between the Bending beam from its pivot axis during the bending process adjust. This distance can also be before the start of a Bending process, e.g. depending on the sheet thickness a suitable constant value can be set. In each The trap is a separate one in the known device Guide and drive device required to adjust the distance of the bending beam from its swivel axis to effect, which naturally complicates the overall device and becomes complex.

Es ist Aufgabe der Erfindung, eine gattungsgemäße Vorrichtung im Zusammenhang mit einer vor dem Biegevorgang erfolgenden Einstellung des Abstandes der Biegewange von ihrer Schwenkachse so zu vereinfachen, daß hierzu keine aufwendigen Führungs- und Antriebseinrichtungen erforderlich sind, sondern die ohnehin an der Vorrichtung vorhandenen Antriebsaggregate zur Einstellung dieses Abstandes ausgenutzt werden können. It is an object of the invention to provide a generic device in connection with a pre-bending process Setting the distance of the bending beam from its swivel axis to simplify so that no expensive Guide and drive devices are required, but the drive units already present on the device can be used to set this distance.

Die Aufgabe wird bei einer gattungsgemäßen Vorrichtung erfindungsgemäß durch folgende Merkmale gelöst:

  • A. beidseits der Biegewange vorgesehene, um die Schwenkachse der Biegewange drehbare Exzenterglieder zum Verstellen des Abstandes der Biegewange von ihrer Schwenkachse durch Verdrehen der Exzenterglieder relativ zur Biegewange;
  • B. eine Feststelleinrichtung zum Feststellen des Exzenterglieds in einer vorgegebenen Winkelposition;
  • C. wobei durch Verschwenken der Biegewange bei festgestelltem Exzenterglied der Abstand der Biegewange von ihrer Schwenkachse einstellbar ist.
    • The object is achieved according to the invention in a generic device by the following features:
  • A. provided on both sides of the bending cheek, about the pivot axis of the bending cheek rotatable eccentric for adjusting the distance of the bending cheek from its pivot axis by rotating the eccentric relative to the bending cheek;
  • B. a locking device for locking the eccentric in a predetermined angular position;
  • C. the distance of the bending beam from its pivot axis being adjustable by pivoting the bending beam when the eccentric member is fixed.

    • Die abhängigen Ansprüche definieren vorteilhafte Ausführungen der Erfindung.The dependent claims define advantageous embodiments of the invention.

    Durch diese Ausbildung ist es möglich, vor Einleitung eines Biegevorganges allein durch Verschwenken der Biegewange den betreffenden Abstand einzustellen, so daß insbesondere eine gesonderte Antriebseinrichtung hierfür entfällt.Through this training it is possible to initiate a Bending process by simply pivoting the bending beam set the relevant distance, so that in particular a there is no separate drive device for this.

    Die nachstehende Beschreibung bevorzugter Ausführungsformen der Erfindung dient im Zusammenhang mit beiliegender Zeichnung der weiteren Erläuterung. Es zeigen:

    Fig. 1
    in schematischer, schaubildlicher Ansicht eine Schwenkbiegemaschine;
    Fig. 2
    eine schematische Schnittansicht entlang der Linie 2-2 in Figur 1;
    Fig. 3
    eine teilweise geschnittene, schematische Ansicht einer bevorzugten Ausführungsform der Erfindung mit Exzenterverstellung der Biegewange;
    Fig. 4
    eine schematische Ansicht in Richtung des Pfeiles A in Fig. 3 und
    Fig. 5
    Die Anordnung eines Antriebsaggregates für die Biegewange.
    The following description of preferred embodiments of the invention serves in conjunction with the accompanying drawings for further explanation. Show it:
    Fig. 1
    in a schematic, diagrammatic view of a folding machine;
    Fig. 2
    is a schematic sectional view taken along line 2-2 in Figure 1;
    Fig. 3
    a partially sectioned, schematic view of a preferred embodiment of the invention with eccentric adjustment of the bending beam;
    Fig. 4
    is a schematic view in the direction of arrow A in Fig. 3 and
    Fig. 5
    The arrangement of a drive unit for the bending beam.

    Die Fig. 1 und 2 zeigen eine Vorrichtung zum Biegen eines Bleches, auch "Schwenkbiegemaschine" genannt. Die Vorrichtung umfaßt als wesentliche Bestandteile ein stationäres Maschinengestell 1, eine (insbesondere in Fig. 2 sichtbare) gewöhnlich ortsfeste Unterwange 2, eine relativ zur Unterwange 2 einstellbare Oberwange 3 und eine um eine maschinengestellfeste Schwenkachse S in Richtung des Doppelpfeiles B hin- und herverschwenkbare Biegewange 4. Die Oberwange 3 ist in Richtung des Pfeiles X relativ zur Unterwange 2 derart einstellbar, daß zwischen Unterwange 2 und Oberwange 3 in Pfeilrichtung Y ein Blech 5 eingeschoben und gegen einen Anschlag 6 angelegt werden kann. Durch Absenkung der Oberwange 3 in Pfeilrichtung X wird das Blech 5 zwischen Unterwange 2 und Oberwange 3 derart festgespannt, daß ein über Unter- und Oberwange vorstehender Blechabschnitt 7 durch Verschwenken der Biegewange 4 um die Schwenkachse S nach oben gebogen werden kann, wobei die Biegewange 4 mit einer Anliegefläche an der Unterseite des Blechabschnitts 7 angreift.1 and 2 show a device for bending a Sheets, also called "folding machine". The device includes as essential components a stationary machine frame 1, one (particularly visible in FIG. 2) usually stationary lower beam 2, one adjustable relative to lower beam 2 Upper beam 3 and one around a machine frame fixed Swivel axis S in the direction of the double arrow B back and forth Bending beam 4. Upper beam 3 is in the direction the arrow X relative to the lower beam 2 so adjustable that between lower beam 2 and upper beam 3 in the direction of arrow Y. Sheet 5 inserted and placed against a stop 6 can be. By lowering the upper beam 3 in the direction of the arrow X is the sheet 5 between the lower beam 2 and upper beam 3 in this way clamped that a protruding over the lower and upper cheek Sheet metal section 7 by pivoting the bending beam 4 can be bent upwards about the pivot axis S, the Bending beam 4 with a contact surface on the underside of the Sheet metal section 7 attacks.

    Um bei diesem Biegevorgang Verquetschungen des Bleches 5 durch die Biegewange 4 zu vermeiden, ist deren Abstand, genaugenommen der Abstand ihrer Anliegefläche am Blechabschnitt 7, von der Schwenkachse S in Pfeilrichtung Z verstellbar. Die Einstellung dieses Abstandes erfolgt vor Einleitung des Biegevorganges, z.B. in Abhängigkeit von der jeweiligen Dicke und des Biegeradius des Bleches 5.To squeeze the sheet 5 through in this bending process To avoid the bending beam 4, its distance is strictly speaking the distance between their contact surface on the sheet metal section 7, adjustable in the direction of arrow Z from the swivel axis S. The This distance is set before the bending process is initiated, e.g. depending on the respective thickness and the bending radius of the sheet 5.

    Nachstehend wird anhand eines Ausführungsbeispieles beschrieben, wie eine automatische Einstellung der Biegewange 4 in Richtung Z mit einfachen Mitteln und ausschließlich unter Verwendung ohnehin an der Schwenkbiegemaschine vorhandener Antriebseinrichtungen erfolgen kann. An exemplary embodiment is described below, like an automatic adjustment of the bending beam 4 in Direction Z with simple means and exclusively using drive devices already present on the folding machine can be done.

    Fig. 3 zeigt schematisch die Biegewange 4, die mittels einer starr mit ihr verbundenen Welle 8 und eines Wälzlagers 9 (beidseits) schwenkbar im Maschinengestell 1 gelagert ist. Die Welle 8 ist von einer Bremsbüchse 11 umschlossen, die mit hohem Gleithaftwert an der Außenseite der Welle 8 anliegt, so daß zur Bewirkung einer Relativverdrehung zwischen der Welle 8 und der Bremsbüchse 11 ein gewisses Drehmoment erforderlich ist. Die Bremsbüchse 11 ist an ihrer Außenseite fest mit einem Exzenterglied 12 verbunden, dessen Außenseite im Wälzlager 9 umläuft. Normalerweise lassen sich somit die Welle 8 und die mit ihr verbundene Biegewange 4 gemeinsam mit dem Exzenterglied 12 um die Schwenkachse S verschwenken, wobei der Abstand der Biegewange 4 von der Schwenkachse S dem Abstand dieser Achse von der Mittelachse T der Welle 8 entspricht.Fig. 3 shows schematically the bending beam 4, which by means of a rigidly connected to it shaft 8 and a roller bearing 9 (on both sides) is pivotally mounted in the machine frame 1. The Shaft 8 is enclosed by a brake sleeve 11, which with high sliding adhesion value on the outside of the shaft 8, so that to effect a relative rotation between the shaft 8 and the brake sleeve 11 requires a certain torque is. The brake sleeve 11 is fixed on its outside with a Eccentric member 12 connected, the outside of the roller bearing 9th circulates. Normally, the shaft 8 and the connected to her bending beam 4 together with the eccentric 12 pivot about the pivot axis S, the distance the bending beam 4 from the pivot axis S the distance of this Axis from the central axis T of the shaft 8 corresponds.

    Das Exzenterglied 12 weist eine zur Schwenkachse S exzentrische Bohrung auf, die von der Welle 8 durchdrungen wird. Die Mittelachse des Wälzlagers 9 fällt mit der Schwenkachse S der Biegewange 4 zusammen. Zur Schwenkachse S liegt die Mittelachse T der starr mit der Biegewange 4 verbundenen Welle 8, wie in Fig. 3 angedeutet, in einem gewissen Abstand. Dieser Abstand ist je nach Winkelstellung des Exzentergliedes 12 relativ zur Welle 8 veränderlich und somit wahlweise einstellbar. Daher läßt sich durch entsprechende Verdrehung des Exzentergliedes 12 relativ zur Welle 8 eine Abstandskomponente (von z.B. einigen mm) in Pfeilrichtung Z (Fig. 2) erzielen, wobei eine (geringfügige) Verstellung der Welle 8 und damit der Biegewange 4 in einer Richtung senkrecht zur Zeichnungsebene der Fig. 3 belanglos ist.The eccentric member 12 has an eccentric to the pivot axis S. Hole on which shaft 8 penetrates. The central axis of the roller bearing 9 coincides with the pivot axis S the bending beam 4 together. To the pivot axis S is the Center axis T of the shaft rigidly connected to the bending beam 4 8, as indicated in Fig. 3, at a certain distance. This Distance is 12 depending on the angular position of the eccentric member changeable relative to shaft 8 and thus optionally adjustable. Therefore, by appropriate rotation of the eccentric 12 a distance component (from e.g. a few mm) in the direction of the arrow Z (FIG. 2), whereby a (slight) adjustment of the shaft 8 and thus the Bending beam 4 in a direction perpendicular to the plane of the drawing 3 is irrelevant.

    Das Exzenterglied 12 ist durch Schrauben 13 mit einer Scheibe 14 starr verbunden, so daß durch Drehen der Scheibe 14 das Exzenterglied 12 relativ zur Welle 8 eingestellt werden kann. Die Verstellung der Scheibe 14 erfolgt vor Beginn des Biegevorgangs durch eine entsprechende Schwenkbewegung der Biegewange 4 bei festgehaltener Scheibe 14, was im einzelnen nachstehend noch erläutert wird.The eccentric member 12 is by screws 13 with a washer 14 rigidly connected, so that by turning the disc 14 Eccentric member 12 can be adjusted relative to the shaft 8. The disc 14 is adjusted before the beginning of the bending process by a corresponding swiveling movement of the bending beam 4 with the disc 14 held, which in detail below will be explained later.

    Wie aus Fig. 3 ersichtlich, ist die Welle 8 über das Maschinengestell 1 hinaus (in Fig. 3 nach links) verlängert und trägt dort ein nur schematisch angedeutetes Antriebsaggregat 15, das in noch zu beschreibender Weise unverdrehbar am Maschinengestell gehalten ist und dem Antrieb der Welle 8 und damit der Biegewange 4 dient. Das Antriebsaggregat 15 umfaßt in herkömmlicher Weise einen (in Fig. 5 sichtbaren) Elektromotor 16 sowie ein Aufsteckgetriebe 17, das mittels einer angetriebenen Hohlwelle 18 auf die Verlängerung der Welle 8 aufgesteckt ist, wobei die Hohlwelle 18 drehfest (über eine Paßfeder) mit der Verlängerung der Welle 8 verbunden ist. Über eine Platte 19 und eine Schraube 21, die in die Verlängerung der Welle 8 eingeschraubt ist, wird ein Ring 20 aus elastomerem Material mit axialer Vorspannung gegen die Scheibe 14 gepreßt, so daß insoweit neben der durch die Bremsbüchse 11 erzielten Selbsthemmung zwischen Welle 8 und Exzenterglied 12 eine weitere kraftschlüssige Verbindung zwischen diesen beiden Teilen hergestellt ist, die eine zusätzliche Mitnahme zwischen Exzenterglied 12 und Welle 8 zur Folge hat.3, the shaft 8 is over the machine frame 1 extended (to the left in Fig. 3) and carries a drive unit, indicated only schematically 15, which in a manner yet to be described cannot be rotated on the machine frame is held and the drive of the shaft 8 and so that the bending beam 4 serves. The drive unit 15 includes an electric motor (visible in FIG. 5) in a conventional manner 16 and a slip-on gear 17, which by means of a driven hollow shaft 18 on the extension of the shaft 8 is plugged in, the hollow shaft 18 rotatably (via a Key) is connected to the extension of the shaft 8. over a plate 19 and a screw 21 in the extension the shaft 8 is screwed, a ring 20 made of elastomer Material with axial preload against the washer 14 pressed so that in addition to that through the brake sleeve 11th achieved self-locking between shaft 8 and eccentric 12th another positive connection between these two Parts that have an additional entrainment between Eccentric member 12 and shaft 8 has the consequence.

    Die Scheibe 14 ist Teil einer Feststelleinrichtung für das Exzenterglied 12 relativ zur Welle 8, so daß, wie bereits erwähnt, bei festgehaltenem Exzenterglied 12 und einer Verdrehung der Welle 8 unter Überwindung der Selbsthemmung zwischen Exzenterglied 12 und Welle 8 eine relative Verstellung zwischen diesen beiden Teilen und damit eine Einstellung des Abstandes der Biegewange 4 von ihrer Schwenkachse S möglich ist. The disc 14 is part of a locking device for the Eccentric member 12 relative to the shaft 8, so that, as already mentioned, with held eccentric member 12 and a twist the wave 8 overcoming self-locking a relative adjustment between eccentric member 12 and shaft 8 between these two parts and therefore an attitude the distance of the bending beam 4 from its pivot axis S is possible.

    Die Scheibe 14 weist an ihrem Umfangsrand, wie Fig. 4 zeigt, eine Einkerbung 22 auf, in die ein Haltestift 23 eindringen kann, der stationär am Maschinengestell 1 gehalten ist, so daß hierdurch die Scheibe 14 an einer Drehbewegung gehindert ist. Der Haltestift 23, der ein weiteres Teil der Feststelleinrichtung ist, steht (senkrecht zur Zeichnungsebene der Fig. 4) von einem Hebel 24 ab, der um eine maschinengestellfeste Drehachse 25 verschwenkbar ist. In Fig. 4 ist mit ausgezogenen Linien diejenige Stellung des Hebels 24 dargestellt, in welcher der Haltestift 23 in die Einkerbung 22 eingedrungen ist und hiermit die Scheibe 14 fixiert. In der in Fig. 4 mit strichpunktierten Linien dargestellten Stellung des Hebels 24 ist der Haltestift 23 aus der Einkerbung 22 ausgerückt, so daß sich die Scheibe 14 und damit das Exzenterglied 12 sowie die Welle 8 mit Biegewange 4 gemeinsam verdrehen können.The disk 14 has on its peripheral edge, as shown in FIG. 4, a notch 22, into which a retaining pin 23 penetrate can, which is held stationary on the machine frame 1, so that hereby the disc 14 is prevented from rotating. The holding pin 23, which is another part of the locking device is (perpendicular to the plane of the drawing in FIG. 4) of a lever 24, which is about an axis of rotation fixed to the machine frame 25 is pivotable. 4 is with solid lines that position of the lever 24 shown in which the Retaining pin 23 has penetrated into the notch 22 and hereby the disc 14 fixed. 4 with dash-dotted lines Lines shown position of the lever 24 is the Retaining pin 23 disengaged from the notch 22 so that the disc 14 and thus the eccentric member 12 and the shaft 8 can be rotated together with the bending beam 4.

    In Fig. 4 befindet sich die Biegewange 4 zunächst in der gestrichelt dargestellten, senkrecht nach unten gerichteten Position, und die Scheibe 14 ist durch den in die Einkerbung 22 eingedrungenen Haltestift 23 fixiert. Wenn nunmehr die Biegewange 4 aus dieser Null- oder Ausgangsstellung heraus in Richtung des Pfeiles B im Gegenuhrzeigersinn verschwenkt wird, findet wegen des über die Scheibe 14 ebenfalls festgehaltenen Exzentergliedes 12 eine Relativbewegung zwischen diesem und der Welle 8 und damit eine gewünschte Verstellung des Abstandes zwischen der Biegewange 4 und der Schwenkachse S statt.4, the bending beam 4 is first in the dashed line shown, directed vertically downwards Position, and the washer 14 is through the in the notch 22 penetrated retaining pin 23 fixed. If now the Bending beam 4 from this zero or starting position Direction of arrow B is pivoted counterclockwise, takes place also because of the disc 14 Eccentric 12 a relative movement between this and the shaft 8 and thus a desired adjustment of the distance between the bending beam 4 and the pivot axis S instead.

    Das Einbringen des Haltestiftes 23 in die Einkerbung 22 (und umgekehrt auch das Herausbringen des Stiftes 23 aus der Einkerbung 22) kann mit dem Hebel 24 oder auch in anderer Weise prinzipiell von Hand erfolgen, wobei sich die Einkerbung 22 gegebenenfalls auch an anderer Stelle als dargestellt befinden kann. Fig. 4 zeigt eine Anordnung, die eine automatische Einführung des Haltestiftes 23 in die Einkerbung 22 immer dann ermöglicht, wenn sich die Biegewange 4 in ihrer nach unten gerichteten Ausgangslage befindet.The insertion of the holding pin 23 into the notch 22 (and vice versa also bringing the pin 23 out of the notch 22) can with the lever 24 or in another way principally done by hand, the notch 22 may also be located elsewhere than shown can. Fig. 4 shows an arrangement which is an automatic introduction of the holding pin 23 in the notch 22 then always allows when the bending beam 4 in its downward direction Starting position is.

    Die Oberwange 3, die in Fig. 4 ebenfalls gestrichelt dargestellt ist, ist um eine maschinengestellfeste Drehachse 26 (über einen nicht dargestellten Antriebsmotor) verschwenkbar, so daß sich ihr der Unterwange 2 zugewandtes Ende (im wesentlichen in Richtung des in Fig. 2 dargestellten Pfeiles X) von der Unterwange 2 abheben läßt. Mit der Oberwange 3 ist starr ein Arm 27 verbunden, der dementsprechend die Schwenkbewegungen der Oberwange mitmacht. Mit dem, Arm 27 ist das eine Ende einer Stange 28 gelenkig verbunden, die eine relativ weite Bohrung im Hebel 24 durchdringt. Zwischen einer am anderen Ende der Stange 28 vorgesehenen Mutter 29 und der (in Fig. 4 rechts gelegenen) Kante des Hebels 24 ist eine Schraubenfeder 31 angeordnet, die den Hebel 24 (in Fig. 4) im Gegenuhrzeigersinn vorspannt. Die Verbindung zwischen Hebel 24 und Stange 28 ist also derart elastisch, daß der Hebel 24 relativ zur Stange 28 und damit zum Arm 27 eine beschränkte freie Bewegung (im Uhrzeigersinn) ausführen kann.The upper cheek 3, which is also shown in dashed lines in Fig. 4 is about an axis of rotation 26 fixed to the machine frame (via a drive motor, not shown) pivotable, so that the end facing the lower beam 2 (essentially in the direction of the arrow X) shown in Fig. 2 the lower beam 2 can lift off. With the upper beam 3 is rigid an arm 27 connected, corresponding to the pivoting movements the upper cheek participates. With that, arm 27 is one thing End of a rod 28 articulated, which is a relative penetrates wide bore in the lever 24. Between a on the other end of the rod 28 provided nut 29 and the (in 4 right edge of the lever 24 is a coil spring 31 arranged the lever 24 (in Fig. 4) counterclockwise preloaded. The connection between lever 24 and Rod 28 is so elastic that the lever 24 is relative to the rod 28 and thus to the arm 27 a limited free movement (clockwise).

    Wenn Biegewange 4 und Scheibe 14 ihre in Fig. 4 dargestellte Ausgangslage einnehmen und die Oberwange 3 angehoben wird, gelangt über den Arm 27, die Stange 28 und den Hebel 24 der Haltestift 23 in die Einkerbung 22, wodurch die Scheibe 14 festgestellt ist. Eine manuelle Einwirkung auf den Haltestift 23 ist nicht erforderlich, da die Bewegung des Haltestifts 23 über die Oberwange 3 und deren Antriebsmotor erfolgt.If bending beam 4 and disc 14 their shown in Fig. 4 Take the starting position and the upper cheek 3 is raised via the arm 27, the rod 28 and the lever 24 of the Retaining pin 23 in the notch 22, whereby the disc 14th is established. A manual action on the holding pin 23 is not necessary since the movement of the holding pin 23 via the upper beam 3 and its drive motor.

    Die Anordnung in Fig. 4 ist so getroffen, daß bereits bei einer teilweisen Rückverschwenkung der Oberwange 3 in Richtung ihrer Schließstellung der Haltestift 23 aus der Einkerbung 22 wieder austritt, also noch lange bevor das Ende der Oberwange 3 wieder fest auf der Unterwange 2 aufliegt, so daß vorher noch ein zu verbiegendes Blech zwischen Unterwange 2 und Oberwange 3 gemäß Fig. 2 eingeführt werden kann.The arrangement in Fig. 4 is such that already at a partial pivoting back of the upper beam 3 in the direction in its closed position, the holding pin 23 from the notch 22 emerges again, long before the end of the upper cheek 3 rests firmly on the lower beam 2, so that before another sheet to be bent between lower beam 2 and upper beam 3 can be introduced according to FIG. 2.

    Es kann vorkommen, daß die Scheibe 14 nicht die in Fig. 4 dargestellte Position relativ zu der nach unten gerichteten Biegewange 4 einnimmt, so daß die Einkerbung 22 an einer anderen Stelle liegt und daher der Haltestift 23 nicht in sie eindringen kann. Um zu gewährleisten, daß der Haltestift 23 in jeder Relativstellung der Scheibe 14 zur Welle 8 in die Einkerbung 22 automatisch eingeführt werden kann, sind folgende Vorkehrungen getroffen: Die Scheibe 14 weist an ihrem Umfangsrand außer der Einkerbung 22 noch zwei Stufen 32, 33 auf, die untereinander und von der Einkerbung 22 jeweils Winkelabstände von 120° haben. Der Umfangsrandabschnitt zwischen der Einkerbung 22 und der Stufe 32 ist kreisförmig, während die Umfangsrandabschnitte zwischen den Stufen 32, 33 sowie zwischen der Stufe 33 und der Einkerbung 22 etwa die Form von Evolventen haben, wie aus der Darstellung von Fig. 4 ersichtlich.It may happen that the disk 14 is not that shown in FIG. 4 Position relative to the downward one Bending beam 4 occupies so that the notch 22 on another Location lies and therefore the retaining pin 23 does not penetrate into it can. To ensure that the holding pin 23 in each position of the disc 14 relative to the shaft 8 in the notch 22 can be automatically introduced are the following Precautions taken: The disk 14 has on its peripheral edge in addition to the notch 22, two steps 32, 33 on the angular distances from each other and from the notch 22 of 120 °. The peripheral edge portion between the notch 22 and step 32 is circular while the peripheral edge portions between levels 32, 33 and between Level 33 and the notch 22 roughly the shape of involute have, as can be seen from the illustration of FIG. 4.

    Wenn zu Beginn der Einstellung des Abstandes der Biegewange 4 von ihrer Schwenkachse S die Scheibe 14 relativ zur Biegewange 4 eine gegenüber Fig. 4 abweichende Position hat, spielt sich folgender Vorgang ab: Die Oberwange 3 wird in die dargestellte, von der Unterwange 2 abgehobene Position verbracht. Der Haltestift 23 kann dabei an einer beliebigen Stelle des Umfangrandes der Scheibe 14 zur Anlage kommen, wobei die Feder 31 als elastischer Ausgleich wirkt, falls die Schwenkbewegung des Hebels 24 mangels radialen Eindringens des Haltestiftes 23 in die Einkerbung 22 oder eine der Stufen 32, 33 seine volle Bewegung nicht ausführen kann. Nunmehr erfolgt über den die Biegewange 4 antreibenden Elektromotor 16 (Fig. 5) eine Verschwenkung der Biegewange im Gegenuhrzeigersinn in Richtung des Pfeiles B über etwas mehr als 120°. Anschließend wird die Biegewange 4 wieder in ihre Ausgangslage zurückgeführt, wobei die Scheibe 14 durch Angreifen des Haltestifts 23 an einer der Stufen 32, 33 oder der Einkerbung 22 festgehalten wird und die Biegewange 4 um einen bestimmten Winkel relativ zur Scheibe 14 verdreht wird, und zwar je nach der vorherigen Relativposition von Biegewange 4 und Scheibe 14. (Die Feder 31 erlaubt dabei vorher ein zwangsläufiges Einfallen des Haltestifts 23 in die Stufen 32, 33 bzw. die Einkerbung 22, falls der Haltestift 23 zunächst auf einen Umfangsrandabschnitt mit größerem Radius auftrifft.)If at the beginning of the adjustment of the distance between the bending beam 4 from its pivot axis S, the disc 14 relative to the bending beam 4 has a different position from FIG. 4, plays the following process: the upper beam 3 is shown in the position lifted from the lower beam 2. Of the Retaining pin 23 can be at any point of the Peripheral edge of the disc 14 come to rest, the spring 31 acts as an elastic compensation if the pivoting movement of the lever 24 due to the lack of radial penetration of the holding pin 23 into the notch 22 or one of the steps 32, 33 its full Cannot perform movement. Now the Bending beam 4 driving electric motor 16 (Fig. 5) a pivoting the bending beam in a counterclockwise direction arrow B over a little more than 120 °. Then the Bending beam 4 returned to its original position, wherein the disc 14 by engaging the retaining pin 23 on one of the Steps 32, 33 or the notch 22 is held and the Bending beam 4 by a certain angle relative to disk 14 is rotated, depending on the previous relative position of bending beam 4 and washer 14 (the spring 31 allows previously an inevitable engagement of the retaining pin 23 in the Steps 32, 33 or the notch 22 if the holding pin 23 initially on a peripheral edge section with a larger radius hits.)

    Dieser Vorgang der Hin- und Herverschwenkung der Biegewange 4 um etwas mehr als 120° wird insgesamt dreimal ausgeführt. Hierdurch ist sichergestellt, daß spätestens nach der dritten Hin- und Herverschwenkung der Biegewange 4 der Haltestift 23 sicher in die Einkerbung 22 eingeführt und die Anordnung die in Fig. 4 dargestellte Konfiguration einnimmt. Nunmehr kann durch eine erneute Verschwenkung der Biegewange 4 bei durch den Haltestift 23 festgehaltenem Exzenterglied 12 der gewünschte Abstand der Biegewange 4 von ihrer Schwenkachse S eingestellt werden.This process of pivoting the bending beam 4 back and forth by a little more than 120 ° is carried out three times in total. This ensures that at the latest after the third The bending cheek 4 of the holding pin 23 is pivoted back and forth securely inserted into the notch 22 and the arrangement the occupies the configuration shown in Fig. 4. Now can by pivoting the bending cheek 4 again the retaining pin 23 held eccentric 12 the desired Distance of the bending beam 4 from its pivot axis S can be set.

    Die beschriebene automatische Verrastung der Scheibe 14 mit dem Haltestift 23 erfolgt rein mechanisch, ohne daß hierzu eine besondere, z.B. elektronische oder elektrooptische Sensorik erforderlich wäre, mit welcher die jeweiligen Winkelpositionen der Scheibe 14 und der Welle 8 abgefühlt wird.The described automatic locking of the disc 14 with the holding pin 23 is purely mechanical, without this a special, e.g. electronic or electro-optical sensors would be required with which the respective angular positions the disc 14 and the shaft 8 is sensed.

    Die Fig. 5 zeigt die Verankerung des die Welle 8 der Biegewange 4 antreibenden Elektromotors 16 mit Aufsteckgetriebe 17 am Maschinengestell 1. Diese Verankerung muß gelenkig sein, da der Motor 16 über das Aufsteckgetriebe 17 direkt auf die Welle 8 aufgesteckt ist und somit die vom Exzenterglied 12 hervorgerufenen, exzentrischen Drehbewegungen dieser Welle 8 mitmacht. Diese exzentrische Bewegung erfolgt in der Zeichnungsebene der Fig. 5. Dementsprechend muß auch das Hebelgestänge seine Gelenkigkeit in dieser Ebene enfalten und umfaßt zu diesem Zweck zwei in dieser Ebene liegende Hebel, nämlich einen ersten, starr mit dem Aufsteckgetriebe 17 verbundenen Hebel 34 sowie einen daran angelenkten Hebel 35, der wiederum mit dem Maschinengestell 1 gelenkig verbunden ist.5 shows the anchoring of the shaft 8 of the bending beam 4 driving electric motor 16 with shaft 17 on the machine frame 1. This anchoring must be articulated because the motor 16 via the slip-on gear 17 directly onto the shaft 8 is attached and thus the eccentric 12, participates in eccentric rotary movements of this shaft 8. This eccentric movement takes place in the plane of the drawing of Fig. 5. Accordingly, the lever linkage develop its flexibility in this plane and embrace it Purpose two levers in this plane, namely one first lever 34 rigidly connected to the plug-on gear 17 and a lever 35 articulated thereon, which in turn is connected to the Machine frame 1 is articulated.

    Bei der dargestellten und beschriebenen Ausführungsform der Erfindung umschließt das Exzenterglied 12 die Welle 8 der Biegewange 4 und ist mit dem Wälzlager 9 im Maschinengestell drehbar gelagert. Prinzipiell wären auch andere Anordnungen des Exzentergliedes zum Verstellen des Abstandes der Biegewange von ihrer Schwenkachse möglich, wenn nur bei festgestelltem Exzenterglied durch Verschwenken der Biegewange der Abstand der Biegewange von ihrer Schwenkachse einstellbar ist.In the illustrated and described embodiment of the Invention encloses the eccentric 12, the shaft 8 of the Bending beam 4 and is with the roller bearing 9 in the machine frame rotatably mounted. In principle, other arrangements would also be of the eccentric to adjust the distance of the bending beam possible from its pivot axis, if only when determined Eccentric link by pivoting the bending cheek Distance of the bending beam from its swivel axis is adjustable.

    Bei der dargestellten Ausführungsform wird ferner der Haltestift 23 der Feststelleinrichtung durch eine Bewegung der Oberwange 3 betätigt. Prinzipiell könnten hierzu auch andere, ohnehin vorhandene, angetriebene Teile der Maschine ausgenutzt werden, beispielsweise eine gegebenenfalls verstellbare Unterwange.In the illustrated embodiment, the holding pin is also 23 of the locking device by moving the Upper beam 3 actuated. In principle, other existing, driven parts of the machine are used anyway be, for example, an optionally adjustable lower beam.

    Das Fixieren der im wesentlichen aus der Scheibe 14 mit der Einkerbung 22 und dem beweglichen Haltestift 23 bestehenden Feststelleinrichtung wird bei der dargestellten Ausführungsform durch Einrasten des Haltestiftes 23 in die Einkerbung 22 vollzogen. Auch hier sind Abwandlungen denkbar, beispielsweise die Verwendung einer Klemmeinrichtung, mit welcher die ein Teil der Feststelleinrichtung bildenden Scheibe 14 in einer vorgegebenen Winkelposition festgeklemmt werden kann.Fixing the substantially from the disc 14 with the Notch 22 and the movable retaining pin 23 existing Locking device is in the illustrated embodiment by latching the retaining pin 23 into the notch 22 accomplished. Modifications are also conceivable here, for example the use of a clamping device with which the one Part of the locking device forming disc 14 in a predetermined angular position can be clamped.

    Die in Fig. 3 dargestellte Ausbildung und Anordnung des Exzenterglieds 12 ist spiegelsymmetrisch auch auf der gegenüberliegenden Seite der Biegewange 4 am Maschinengestell 1 vorgesehen, und zwar einschließlich der Feststelleinrichtung, jedoch ohne Antriebsaggregat 15, das lediglich auf einer Seite der Vorrichtung erforderlich ist.The design and arrangement of the eccentric member shown in Fig. 3 12 is also mirror-symmetrical on the opposite one Side of the bending beam 4 provided on the machine frame 1, including the locking device, however without drive unit 15, which is only on one side the device is required.

    Die beschriebene Vorrichtung zum Biegen eines Bleches ist vorzugsweise mit einer programmierbaren Steuerung, z.B. einer CNC-Steuerung, ausgerüstet, mit deren Hilfe insbesondere auch die Feststelleinrichtung der Scheibe 14 und damit des Exzentergliedes 12 betätigt und der Abstand der Biegewange 4 von der Schwenkachse S in der erläuterten Weise automatisch eingestellt wird.The described device for bending a sheet is preferred with a programmable controller, e.g. one CNC control, equipped with the help of which in particular the locking device of the disc 14 and thus the eccentric member 12 actuated and the distance of the bending beam 4 from the pivot axis S automatically set in the manner described becomes.

    Claims (8)

    1. Device for bending a metal sheet comprising a machine frame (1), a lower cheek (2), an upper cheek (3) adjustable relative to said lower cheek, and a bending cheek (4) pivotable about a pivot axis (S) fixed on said machine frame, the distance of said bending cheek from said pivot axis being adjustable,
      characterized by the following features:
      A. eccentric members (12) for adjusting the distance of said bending cheek from its pivot axis (S) by rotating said eccentric members relative to said bending cheek, said eccentric members being provided on either side of said bending cheek (4) and being rotatable about said pivot axis (S) of said bending cheek;
      B. an immobilizing mechanism (14, 23) for immobilizing said eccentric members (12) in a predetermined angular position;
      C. the distance of said bending cheek from its pivot axis (S) being adjustable by pivoting said bending cheek while said eccentric members (12) are immobilized.
    2. Device as defined in claim 1, characterized in that said eccentric member (12) encloses a shaft (8) carrying said bonding cheek (4) and is mounted on its outer side with a rotary bearing (9) for rotation in said machine frame (1).
    3. Device as defined in claim 2, characterized in that said eccentric member (12) is arranged in a self-locking manner (11, 20) on said shaft (8) of said bending cheek (4).
    4. Device as defined in claim 1, characterized in that said immobilizing mechanism (14, 23) is firmly clampable in the predetermined angular position by a clamping device.
    5. Device as defined in claim 1, characterized in that said immobilizing mechanism (14, 23) is lockable in the predetermined angular position by a detent device (22).
    6. Device as defined in claim 1, characterized in that said immobilizing mechanism (14, 23) is actuatable by the movement of said upper cheek (3).
    7. Device as defined in claim 2, characterized in that a drive unit (15) of said bending cheek (4) is arranged on a shaft (8) of said bending cheek (4), said shaft being adjustable by said eccentric member (12).
    8. Device as defined in claim 7, characterized in that said drive unit (15) is fixed on said machine frame (1) by a lever means (34, 35).
    EP96915022A 1995-08-08 1996-05-07 Sheet metal bending device Expired - Lifetime EP0843605B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE19529126A DE19529126A1 (en) 1995-08-08 1995-08-08 Device for bending a sheet
    DE19529126 1995-08-08
    PCT/EP1996/001885 WO1997005973A1 (en) 1995-08-08 1996-05-07 Sheet metal bending device

    Publications (2)

    Publication Number Publication Date
    EP0843605A1 EP0843605A1 (en) 1998-05-27
    EP0843605B1 true EP0843605B1 (en) 1999-08-11

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP96915022A Expired - Lifetime EP0843605B1 (en) 1995-08-08 1996-05-07 Sheet metal bending device

    Country Status (9)

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    US (1) US5842369A (en)
    EP (1) EP0843605B1 (en)
    JP (1) JPH11510434A (en)
    AT (1) ATE183119T1 (en)
    CA (1) CA2228599A1 (en)
    DE (2) DE19529126A1 (en)
    DK (1) DK0843605T3 (en)
    ES (1) ES2136997T3 (en)
    WO (1) WO1997005973A1 (en)

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    EP1810761A1 (en) * 2006-01-24 2007-07-25 Ralf Beger Sheet folding device
    DE102008064227B3 (en) * 2008-12-22 2010-05-27 Ralf Beger A method for folding a sheet metal part in a Blechabkantvorrichtung and suitable for performing this method Blechabkantvorrichtung for folding a sheet metal part

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    US6855284B2 (en) * 2002-04-30 2005-02-15 Abb Technology Ag Process for bending a workpiece
    EP1915224A4 (en) * 2005-08-15 2011-04-20 Nela Ternes Register Group Inc Methods and apparatuses for making lithographic plates
    DE102010009074A1 (en) * 2010-02-23 2011-08-25 Hans Schröder Maschinenbau GmbH, 82405 Folding Machine
    AT515280B1 (en) * 2014-06-10 2015-08-15 Trumpf Maschinen Austria Gmbh Bending press with bending unit and method for forming
    EP3515621A1 (en) 2016-09-26 2019-07-31 Trumpf Werkzeugmaschinen GmbH + Co. KG Tool, machine tool, and method for machining planar workpieces
    DE102016118175B4 (en) * 2016-09-26 2018-08-23 Trumpf Werkzeugmaschinen Gmbh & Co. Kg Machine tool and method for processing plate-shaped workpieces
    WO2018055186A1 (en) 2016-09-26 2018-03-29 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Tool, machine tool, and method for machining planar workpieces
    PL3515618T3 (en) * 2016-09-26 2020-12-14 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Tool and machine tool and method for machining planar workpieces
    CN111822553A (en) * 2019-04-18 2020-10-27 中国石油大学(华东) Novel process for laser thermoforming, stretch bending and production of metal sheet
    SE543695C2 (en) * 2019-10-15 2021-06-08 Cidan Machinery Sweden Ab A folding machine for folding sheet shaped material

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    DE942622C (en) * 1952-09-13 1956-05-03 Merklinger Maschinenfabrik G M Device for all-round adjustment of the bending beams of folding machines
    US5259231A (en) * 1989-10-26 1993-11-09 Reinhardt Maschinenbau Gmbh Process for the two-directional bending of sheet metal
    DE3935659C3 (en) * 1989-10-26 1997-01-02 Reinhardt Gmbh Maschbau Device for bending a sheet
    JPH0437419A (en) * 1990-05-31 1992-02-07 Amada Co Ltd Machine for bending sheet material

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1810761A1 (en) * 2006-01-24 2007-07-25 Ralf Beger Sheet folding device
    DE102008064227B3 (en) * 2008-12-22 2010-05-27 Ralf Beger A method for folding a sheet metal part in a Blechabkantvorrichtung and suitable for performing this method Blechabkantvorrichtung for folding a sheet metal part

    Also Published As

    Publication number Publication date
    EP0843605A1 (en) 1998-05-27
    JPH11510434A (en) 1999-09-14
    DE59602734D1 (en) 1999-09-16
    US5842369A (en) 1998-12-01
    DK0843605T3 (en) 2000-03-06
    ATE183119T1 (en) 1999-08-15
    DE19529126A1 (en) 1997-02-13
    ES2136997T3 (en) 1999-12-01
    WO1997005973A1 (en) 1997-02-20
    CA2228599A1 (en) 1997-02-20

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