EP2359948B1 - Swing-folding machine - Google Patents

Swing-folding machine Download PDF

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Publication number
EP2359948B1
EP2359948B1 EP20110000931 EP11000931A EP2359948B1 EP 2359948 B1 EP2359948 B1 EP 2359948B1 EP 20110000931 EP20110000931 EP 20110000931 EP 11000931 A EP11000931 A EP 11000931A EP 2359948 B1 EP2359948 B1 EP 2359948B1
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EP
European Patent Office
Prior art keywords
bending
swivel
rail
cheek
bearing part
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.)
Not-in-force
Application number
EP20110000931
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German (de)
French (fr)
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EP2359948A1 (en
Inventor
Klemens Rieger
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.)
Hans Schroeder Maschinenbau GmbH
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Hans Schroeder Maschinenbau GmbH
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Publication of EP2359948A1 publication Critical patent/EP2359948A1/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

Definitions

  • the invention relates to a folding machine for counter-bending a workpiece made of sheet metal, which is held between tools of a top cheek and a lower cheek, by means of a bending bar on a bending cheek, with respect to a bending edge between a lower starting position (positive bending) and an upper starting position (negative bending) to a machine-fixed pivot axis is pivotable, and wherein the bending cheek is connected with lateral connection parts each to a pivot bearing part via a longitudinal guide which is adjustable in a plane perpendicular to the pivot axis such that after pivoting of the bending beam, the bending rail reaches a staggered by their width starting position, which corresponds to a change of the working edge of the bending rail.
  • the present invention has the object, in a simple pivoting bending machine, the counterbending of a workpiece by adjusting the longitudinal guide of the bending rail in a simple manner to allow possible without separate drive.
  • this object is achieved on a folding machine of the type mentioned above in that, for adjusting the longitudinal guide, an end of a guide rail of the longitudinal guide adjacent to the bending rail is designed to be adjustable, that the guide rail is adjustable with its loose end at least between two stops and that each stop position releasable locking means are associated with respect to the respective starting position of the bending rail.
  • a guide rail is provided whose distal end of the bending rail is rotatably mounted in the pivot bearing part.
  • the guide bar is thus pivotable to its adjustment relative to the pivot bearing part.
  • the locking means of the longitudinal guide are formed until reaching the respective starting position of the bending rail as a sliding guide between the pivot bearing part and the longitudinal guide associated with the connecting part of the bending cheek.
  • the link guide thus serves to secure the defined by the respective stop position course of the longitudinal guide or the guide rail.
  • a guide plate forming the grid plate is releasably secured to the pivot bearing part, on which in adaptation to a workpiece, the stops and locking means are designed for the longitudinal guidance of the bending cheek.
  • the stops on the grid plate a limitation of the pivoting range of the guide bar is given in adaptation to the selected width of the bending bar.
  • the expert selects the width of the bending rail, in particular taking into account the sheet thickness of the workpiece and the desired design of the bending edge.
  • the grid plate is adjacent to the loose end of the guide bar attached to the pivot bearing part and an end of the guide bar has an open cutout, in which their stop block occurs and that they above the cut down Verstellnuten open, which slide tracks form the slotted guide has.
  • a pivot shaft is rotatably mounted on the bending cheek adjacent end side of the associated end of the guide rail and at the other end face a pivot rod is attached, which for limiting the pivoting path of the bending beam for the positive / negative bending cooperates with stops on the adjacent machine stand.
  • the bending drive is used for pivoting the guide bar between the two stop positions, so that a separate drive can be omitted. It may be appropriate to suitably select or arrange the stops on the adjacent machine stand in adaptation to the respective bending task.
  • a spindle drive in the pivot bearing part is provided for the adjustment in its longitudinal guide, the spindle cooperates with a threaded bore across the axis of rotation of the pivot shaft and is supported with its driven end in the associated connection part of the bending cheek.
  • the pivot shaft serves as a spindle nut of the spindle drive.
  • Fig. 1 shows a cross section through a pivot bearing part 1, to which the bending cheek 2 is connected with a lateral end.
  • the end portion is shown with a fastening screw 4.
  • the bending beam 2 is pivoted about a machine-fixed pivot axis 5 by a bearing 6 on a lateral machine stand 7.
  • the pivot bearing part 1 is pivotally mounted by means of a keyway 9.
  • the rotary actuator is not shown in the drawing.
  • a linear drive which is connected to a drive shaft 12 of a spindle 13.
  • the spindle 13 is rotatably connected to a shaft portion 14 which is received in a bearing bore of the connecting part 11 of the bending beam 2 and stored there between thrust ball bearings 15, 16.
  • the spindle 13 runs in a matching threaded bore 17 of a spindle nut 18, which in a transverse bore 19 (FIG. Fig. 2 ) of the pivot bearing part 1 is rotatably mounted.
  • the spindle nut 18 is formed as a cylindrical member and mounted with both ends respectively in the bearing bore 19 of a free bore 20 for the spindle 13 enclosing wall portion 21 of the pivot bearing part 1.
  • the spindle nut 18 has, as in Fig. 2b shown, at both ends mounting wedges 22, 23 for each three mounting screws 24.
  • the guide rail 10 which has a groove 25 for the associated mounting wedge 22 of the spindle nut 18 has and on the other hand, a pivot rod 26 which has a groove 27 for the mounting wedge 23.
  • the axial projections of the spindle nut 18 on both sides of the pivot bearing part 1 are dimensioned so that both the guide rail 10 and the pivot rod 26 are arranged at a distance from the pivot bearing part 1, that is, they can pivotal movement of the spindle nut 18 relative to the pivot bearing part 1 without contact participate.
  • This pivoting movement which serves to adjust the bending beam 2 relative to the pivot bearing part 1, is associated with Fig. 5 explained in more detail.
  • the grid plate 31 has still different Verstellnuten, as closer to the Fig. 2 and 4 in which teeth 32 engage, which are formed on tooth plates 33, which at the upper end of the connecting part 11 of the bending cheek 2 by means of screws 34 (FIGS. Fig. 3 ) are attached.
  • the tooth plates 33 adjoin on both sides of the upwardly extending guide groove 35 for the guide rail 10.
  • the pivot bearing part 1 is shown with an approximately square cross section next to the associated end of the pivot shaft 8. It has a bearing bore 36 for the pivot shaft 8 with a keyway 37 for producing the rotary joint by means of in Fig. 1 illustrated wedge 9.
  • Fig. 2 are shown with dashed lines, the transverse bore 19 for receiving the spindle nut 18 in the pivot bearing part 1 and the free bore 20 of the pivot bearing part 1 for the entry of the spindle 13.
  • the pivot bearing part 1 On the connection side to the bending cheek down the pivot bearing part 1 has a portion 38, above which the raster portion 31 is fixed by means of three screws 39. At its lower end, the raster portion 31 has a cutout 30 for the entry of the stop block 29, which is attached to the upper end of the guide rail 10 (see also Fig. 2c ).
  • the grid plate 31 has two oblique Verstellnuten 41 and two straight Verstellnuten 42.
  • the latter define the adjustment of the bending cheek 2 in its downwardly pivoted starting position;
  • the oblique Verstellnuten 41 define the adjustment of the bending beam 2 in its upwardly pivoted starting position.
  • this is extended by means of the linear drive from the Verstellnuten 41, 42; only by the retraction of the teeth 32 either in the oblique Verstellnuten 41 or in the straight Verstellnuten 42 is the starting position of the Biegegewange 2 defined either in the upper or lower stop position.
  • the teeth 32 move within the respective initial position associated Verstellnuten 41 and 42nd
  • Fig. 2a shows the pivot rod 26 with mounting groove 27 on its spindle nut 18 side facing, so that a rotation of the pivot rod 26 can be carried out according to the spindle nut 18 about the adjustment axis 44.
  • Fig. 4 shows an enlarged view of the grid plate 31 with the three mounting screws 39, the straight Verstellnuten 42 and the oblique Verstellnuten 41 and the cutout 30.
  • the cutout 30 has on the one hand a rectilinear stop surface 45, on the other hand an inclined thereto abutment surface 46th
  • Fig. 4a shows a section according to a-a of Fig. 4 and Fig. 4b a section according to bb the Fig. 4 ,
  • Fig. 4 the guide strip 10 is drawn so that its stop block 29 rests against the rectilinear stop surface 45 of the cutout 30. In this position, the guide rail 10, the connecting part 11 of the bending beam 2 is aligned for the lower starting position, that is, in this initial position, the teeth 32 are retracted into the associated straight Verstellnuten 42.
  • the guide bar 10 is still marked with dashed lines in its oblique, namely displaced stop position, which is achieved when the right in the drawing edge of the stop block 29 abuts against the associated surface 46 of the cutout 30 of the grid plate 31.
  • the starting position of the bending cheek 2 is defined in its upper pivot position, wherein the teeth 32, as shown in dashed lines, are retracted into the oblique Verstellnuten 41.
  • the entry depth may be different in adaptation to the sheet thickness of the workpiece or the desired expression of the bending curve.
  • toothed plates 33 are also shown by dashed lines with the fastening screws 34 and indeed in the oblique position corresponding to the oblique adjustment grooves 42 and the oblique stop surface 46 for the obliquely marked stop position of the stop block 29.
  • Fig. 5 shows a portion of the lateral machine stand 7 with two mounted as rollers stops, namely a lower stop 48 for adjusting the pivot rod 26 in the lower starting position of the bending beam 2 on the one hand and an upper stop 49, which is positioned so that it the pivot rod 26 of the upper starting position of the bending beam 2 is inclined accordingly.
  • the upper starting position of the bending beam 2 with bending rail 3 is shown in dotted. It can be seen the corresponding adjustment of the pivot rod 26, such that the right working edge the bending bar 3 exactly hits the bending line of the workpiece 50.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Description

Die Erfindung betrifft eine Schwenkbiegemaschine zum gegenläufigen Biegen eines Werkstücks aus Blech, welches festgehalten ist zwischen Werkzeugen einer Oberwange und einer Unterwange, mittels einer Biegeschiene an einer Biegewange, welche bezüglich einer Biegekante zwischen einer unteren Ausgangslage (Positivbiegen) und einer oberen Ausgangslage (Negativbiegen) um eine maschinenfeste Schwenkachse verschwenkbar ist, und wobei die Biegewange mit seitlichen Anschlussteilen jeweils an ein Schwenklagerteil über eine Längsführung angeschlossen ist, die in einer Ebene senkrecht zur Schwenkachse derart verstellbar ist, dass nach dem Verschwenken der Biegewange die Biegeschiene eine um ihre Breite versetzte Ausgangslage erreicht, welche einem Wechsel der Arbeitskante der Biegeschiene entspricht.The invention relates to a folding machine for counter-bending a workpiece made of sheet metal, which is held between tools of a top cheek and a lower cheek, by means of a bending bar on a bending cheek, with respect to a bending edge between a lower starting position (positive bending) and an upper starting position (negative bending) to a machine-fixed pivot axis is pivotable, and wherein the bending cheek is connected with lateral connection parts each to a pivot bearing part via a longitudinal guide which is adjustable in a plane perpendicular to the pivot axis such that after pivoting of the bending beam, the bending rail reaches a staggered by their width starting position, which corresponds to a change of the working edge of the bending rail.

An einer derartigen bekannten Schwenkbiegemaschine ( EP 1649946 A1 ), welche das Biegen von Blech in entgegengesetzte Richtungen ohne Wenden des Blechs ermöglicht, erfolgt der Wechsel der Arbeitskanten der Biegeschiene durch Verstellen der Längsführung mittels eines Exzenterantriebs automatisch nach dem Verschwenken der Biegewange. Der Exzenterhub ist dabei entsprechend der Breite der Biegeschiene einstellbar, derart, dass die Längsführung in Höhe der Biegeschiene wenigstens um deren Breite gegenüber der Biegekante versetzt ist. Die Exzenterverstellung erfolgt bei der bekannten Vorrichtung mittels eines Getriebemotors, der über eine numerische Steuerung betätigbar ist.On such a known folding machine ( EP 1649946 A1 ), which allows the bending of sheet metal in opposite directions without turning the sheet, the change of the working edges of the bending rail by adjusting the longitudinal guide by means of an eccentric drive automatically after the pivoting of the bending beam. The Exzenterhub is adjustable according to the width of the bending rail, such that the longitudinal guide is offset at the level of the bending rail at least by its width relative to the bending edge. The eccentric adjustment takes place in the known device by means of a geared motor, which is actuated by a numerical control.

Dem gegenüber liegt der vorliegenden Erfindung die Aufgabe zugrunde, bei einer einfachen Schwenkbiegemaschine das Gegenbiegen eines Werkstücks durch Verstellen der Längsführung der Biegeschiene auf einfache Weise, möglichst ohne gesonderten Antrieb zu ermöglichen.On the other hand, the present invention has the object, in a simple pivoting bending machine, the counterbending of a workpiece by adjusting the longitudinal guide of the bending rail in a simple manner to allow possible without separate drive.

Erfindungsgemäß wird diese Aufgabe an einer Schwenkbiegemaschine der eingangs genannten Art dadurch gelöst, dass zum Verstellen der Längsführung ein der Biegeschiene benachbartes Ende einer Führungsleiste der Längsführung verstellbar ausgeführt ist,
dass die Führungsleiste mit ihrem losen Ende wenigstens zwischen zwei Anschlägen verstellbar ist und dass jeder Anschlagposition lösbare Arretierungsmittel bezüglich der jeweiligen Ausgangslage der Biegeschiene zugeordnet sind.According to the invention, this object is achieved on a folding machine of the type mentioned above in that, for adjusting the longitudinal guide, an end of a guide rail of the longitudinal guide adjacent to the bending rail is designed to be adjustable,
that the guide rail is adjustable with its loose end at least between two stops and that each stop position releasable locking means are associated with respect to the respective starting position of the bending rail.

Auf diese Weise besteht die Möglichkeit, für den Wechsel der Ausgangslage die Führungsleiste in unterschiedliche Anschlagpositionen zu verstellen und dabei den Wechsel der Arbeitskante der Biegeschiene zu bewirken. Ein gesonderter Antrieb für das Verstellen der Führungsleiste kann dabei entfallen. Es genügt, die beiden Anschlagpositionen für das Positivbiegen und das Negativbiegen festzulegen, so dass die jeweilige Ausgangslage für das Schwenkbiegen definiert ist. Eine lösbare Arretierung sorgt dafür, dass nach dem Verschwenken der Biegewange bis zum Erreichen der jeweiligen Ausgangslage der präzise Wechsel der Arbeitskante der Biegeschiene der jeweiligen Anschlagposition aufrechterhalten bleibt.In this way, it is possible to adjust the guide rail in different stop positions for the change of the starting position and thereby to effect the change of the working edge of the bending rail. A separate drive for adjusting the guide bar can be omitted. It is sufficient to define the two stop positions for the positive bending and the negative bending, so that the respective starting position for the pivoting bending is defined. A releasable lock ensures that after pivoting the Biegewange is maintained until reaching the respective starting position of the precise change of the working edge of the bending rail of the respective stop position.

Im Rahmen der erfindungsgemäßen Lösung ist eine Führungsleiste vorgesehen, deren von der Biegeschiene entferntes Ende drehbar im Schwenklagerteil gelagert ist. Die Führungsleiste ist somit zu ihrem Verstellen gegenüber dem Schwenklagerteil verschwenkbar.In the context of the solution according to the invention, a guide rail is provided whose distal end of the bending rail is rotatably mounted in the pivot bearing part. The guide bar is thus pivotable to its adjustment relative to the pivot bearing part.

Dadurch, dass nach einem Ausführungsbeispiel der Erfindung am losen Ende der Führungsleiste ein gegen das Schwenklagerteil vorspringender Anschlagklotz vorgesehen ist, wird die Verstellung der Führungsleiste zwischen Anschlägen auf Seiten des Schwenklagerteils entsprechend den beiden Ausgangslagen der Biegeschiene ermöglicht und die Längsführung für die Biegewange entsprechend verstellt.Characterized in that according to an embodiment of the invention at the loose end of the guide bar a projecting against the pivot bearing stop block is provided, the adjustment of the guide bar between stops on the part of the pivot bearing part corresponding to the two initial positions of the bending rail allows and adjusts the longitudinal guide for the bending beam accordingly.

Nach einer weiteren Ausgestaltung der Erfindung sind die Arretierungsmittel der Längsführung bis zum Erreichen der jeweiligen Ausgangslage der Biegeschiene als Kulissenführung zwischen dem Schwenklagerteil und dem der Längsführung zugeordneten Anschlussteil der Biegewange ausgebildet. Die Kulissenführung dient demnach der Sicherung des durch die jeweilige Anschlagposition definierten Verlaufs der Längsführung bzw. der Führungsleiste.According to a further embodiment of the invention, the locking means of the longitudinal guide are formed until reaching the respective starting position of the bending rail as a sliding guide between the pivot bearing part and the longitudinal guide associated with the connecting part of the bending cheek. The link guide thus serves to secure the defined by the respective stop position course of the longitudinal guide or the guide rail.

In weiterer Ausgestaltung der Erfindung ist am Schwenklagerteil eine die Kulissenführung ausbildende Rasterplatte lösbar befestigt, an welchen in Anpassung an ein Werkstück die Anschläge und Arretierungsmittel für die Längsführung der Biegewange ausgebildet sind. Mittels der Anschläge an der Rasterplatte ist eine Begrenzung des Schwenkbereichs der Führungsleiste in Anpassung an die gewählte Breite der Biegeschiene gegeben. Die Breite der Biegeschiene wählt der Fachmann insbesondere unter Berücksichtigung der Blechstärke des Werkstücks und der gewünschten Ausbildung der Biegekante.In a further embodiment of the invention, a guide plate forming the grid plate is releasably secured to the pivot bearing part, on which in adaptation to a workpiece, the stops and locking means are designed for the longitudinal guidance of the bending cheek. By means of the stops on the grid plate, a limitation of the pivoting range of the guide bar is given in adaptation to the selected width of the bending bar. The expert selects the width of the bending rail, in particular taking into account the sheet thickness of the workpiece and the desired design of the bending edge.

Nach einer besonders vorteilhaften Ausführungsform ist vorgesehen, dass die Rasterplatte benachbart dem losen Ende der Führungsleiste am Schwenklagerteil befestigt ist und einen zum Ende der Führungsleiste hin offenen Ausschnitt besitzt, in welchen deren Anschlagklotz eintritt und dass sie oberhalb des Ausschnitts nach unten offene Verstellnuten, welche Kulissenbahnen der Kulissenführung bilden, aufweist.According to a particularly advantageous embodiment, it is provided that the grid plate is adjacent to the loose end of the guide bar attached to the pivot bearing part and an end of the guide bar has an open cutout, in which their stop block occurs and that they above the cut down Verstellnuten open, which slide tracks form the slotted guide has.

Damit wird sichergestellt, dass nach dem Erreichen einer Anschlagposition und nachfolgender Linearverschiebung der Biegewange bis zum Erreichen der jeweiligen Ausgangslage die genaue Ausrichtung der Längsführung beibehalten wird. Beispielhaft ist vorgesehen, dass während der Linearverschiebung in die nach unten offenen Verstellnuten Führungsgegenstücke bildende Zähne, welche am seitlichen Anschlussteil der Biegewange vorgesehen sind, einfahren, bis die Ausgangslage erreicht ist.This ensures that after reaching a stop position and subsequent linear displacement of the bending beam until the respective starting position, the exact alignment of the longitudinal guide is maintained. By way of example, it is provided that during the linear displacement in the downwardly open Verstellnuten guide counterparts forming teeth provided at the lateral connection part of the bending cheek are, retract, until the starting position is reached.

In weiterer vorteilhafter Ausgestaltung der Erfindung ist vorgesehen, dass in einer Durchgangsbohrung des Schwenklagerteils eine Schwenkwelle drehbar gelagert ist, an deren der Biegewange benachbarten Stirnseite das zugeordnete Ende der Führungsleiste und an deren anderen Stirnseite eine Schwenkstange befestigt ist, welche zur Begrenzung des Schwenkwegs der Biegewange für das Positiv-/Negativbiegen mit Anschlägen am benachbarten Maschinenständer zusammenwirkt.In a further advantageous embodiment of the invention, it is provided that in a through hole of the pivot bearing part, a pivot shaft is rotatably mounted on the bending cheek adjacent end side of the associated end of the guide rail and at the other end face a pivot rod is attached, which for limiting the pivoting path of the bending beam for the positive / negative bending cooperates with stops on the adjacent machine stand.

Auf diese Weise wird der Biegeantrieb zum Verschwenken der Führungsleiste zwischen den beiden Anschlagpositionen genutzt, so dass ein gesonderter Antrieb entfallen kann. Dabei kann es zweckmäßig sein, die Anschläge am benachbarten Maschinenständer in Anpassung an die jeweilige Biegeaufgabe geeignet auszuwählen bzw. anzuordnen.In this way, the bending drive is used for pivoting the guide bar between the two stop positions, so that a separate drive can be omitted. It may be appropriate to suitably select or arrange the stops on the adjacent machine stand in adaptation to the respective bending task.

Als bevorzugter Linearantrieb für die Biegewange ist zu deren Verstellung in ihrer Längsführung ein Spindelantrieb im Schwenklagerteil vorgesehen, dessen Spindel mit einer Gewindebohrung quer durch die Drehachse der Schwenkwelle zusammenwirkt und mit ihrem angetriebenen Ende im zugeordneten Anschlussteil der Biegewange abgestützt ist. Die Schwenkwelle dient hierbei als Spindelmutter des Spindelantriebs. Infolge der Spindeldrehung wird der Anschlussteil der Biegewange zusammen mit dieser gegenüber dem Schwenklagerteil linear entlang der Führungsleiste verfahren.As a preferred linear drive for the bending cheek a spindle drive in the pivot bearing part is provided for the adjustment in its longitudinal guide, the spindle cooperates with a threaded bore across the axis of rotation of the pivot shaft and is supported with its driven end in the associated connection part of the bending cheek. The pivot shaft serves as a spindle nut of the spindle drive. As a result of the spindle rotation of the connecting part of the bending beam is together with this move linearly along the guide rail relative to the pivot bearing part.

Im folgenden wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung erläutert. Es zeigt

Fig. 1
Einen Querschnitt durch das Schwenklagerteil der Schwenkbiegemaschine
Fig. 2
Das Schwenklagerteil gemäß Fig. 1 in perspektivischer Darstellung
Fig. 2a, 2b, 2c
Einzelheiten zu Fig. 2
Fig. 3
Einen an das Schwenklagerteil anschließenden Abschnitt der Biegewange, in perspektivischer Darstellung
Fig. 4
Eine Rasterplatte zum Versetzen der Biegewange
Fig. 4a, 4b
Verschiedene Ansichten zu Fig. 4 und
Fig. 5
Eine schematische Darstellung der Schwenkbewegung der Biegewange
In the following an embodiment of the invention will be explained with reference to the drawing. It shows
Fig. 1
A cross section through the pivot bearing part of the folding machine
Fig. 2
The pivot bearing part according to Fig. 1 in perspective view
Fig. 2a, 2b, 2c
For details Fig. 2
Fig. 3
A subsequent to the pivot bearing portion of the bending beam, in perspective view
Fig. 4
A grid plate for moving the bending beam
Fig. 4a, 4b
Different views too Fig. 4 and
Fig. 5
A schematic representation of the pivoting movement of the bending beam

Fig. 1 zeigt einen Querschnitt durch ein Schwenklagerteil 1, an welchem die Biegewange 2 mit einem seitlichen Ende angeschlossen ist. Am oberen Ende der Biegewange 2 erstreckt sich in horizontaler Richtung die das eigentliche Biegewerkzeug bildende Biegeschiene 3, deren Endabschnitt mit einer Befestigungsschraube 4 dargestellt ist. Die Biegewange 2 wird verschwenkt um eine maschinenfeste Schwenkachse 5 durch ein Lager 6 an einem seitlichen Maschinenständer 7. Am freien Ende einer Biegewelle 8 mit der Schwenkachse 5 ist das Schwenklagerteil 1 mittels einer Keilnut 9 verschwenkbar gelagert. Der Schwenkantrieb ist auf der Zeichnung nicht dargestellt. Fig. 1 shows a cross section through a pivot bearing part 1, to which the bending cheek 2 is connected with a lateral end. At the upper end of the bending cheek 2 extends in the horizontal direction which forms the actual bending tool bending rail 3, the end portion is shown with a fastening screw 4. The bending beam 2 is pivoted about a machine-fixed pivot axis 5 by a bearing 6 on a lateral machine stand 7. At the free end of a bending shaft 8 with the pivot axis 5, the pivot bearing part 1 is pivotally mounted by means of a keyway 9. The rotary actuator is not shown in the drawing.

Um eine Linearverschiebung der Biegewange 2 in Richtung einer Führungsleiste 10 zu ermöglichen ist an dem der Führungsleiste 10 zugeordneten Anschlussteil 11 der Biegewange 2 ein nicht dargestellter Linearantrieb vorgesehen, der an einer Antriebswelle 12 einer Spindel 13 angeschlossen ist. Die Spindel 13 ist mit einem Wellenabschnitt 14 drehfest verbunden, welcher in einer Lagerbohrung des Anschlussteils 11 der Biegewange 2 aufgenommen und dort zwischen Axialkugellagern 15, 16 gelagert ist. Die Spindel 13 läuft in einer dazu passenden Gewindebohrung 17 einer Spindelmutter 18, welche in einer Querbohrung 19 (Fig. 2) des Schwenklagerteils 1 drehbar gelagert ist. Die Spindelmutter 18 ist als zylindrisches Bauteil ausgebildet und mit beiden Enden jeweils in der Lagerbohrung 19 des eine Freibohrung 20 für die Spindel 13 umschließenden Wandabschnitts 21 des Schwenklagerteils 1 gelagert.In order to enable a linear displacement of the bending beam 2 in the direction of a guide bar 10 is provided on the guide bar 10 associated with connecting part 11 of the bending beam 2, not shown, a linear drive, which is connected to a drive shaft 12 of a spindle 13. The spindle 13 is rotatably connected to a shaft portion 14 which is received in a bearing bore of the connecting part 11 of the bending beam 2 and stored there between thrust ball bearings 15, 16. The spindle 13 runs in a matching threaded bore 17 of a spindle nut 18, which in a transverse bore 19 (FIG. Fig. 2 ) of the pivot bearing part 1 is rotatably mounted. The spindle nut 18 is formed as a cylindrical member and mounted with both ends respectively in the bearing bore 19 of a free bore 20 for the spindle 13 enclosing wall portion 21 of the pivot bearing part 1.

Die Spindelmutter 18 besitzt, wie in Fig. 2b dargestellt, an beiden Enden Befestigungskeile 22, 23 für jeweils drei Befestigungsschrauben 24. Damit werden befestigt einerseits die Führungsleiste 10, welche eine Nut 25 für den zugeordneten Befestigungskeil 22 der Spindelmutter 18 besitzt und andererseits eine Schwenkstange 26, welche eine Nut 27 für den Befestigungskeil 23 besitzt. Die axialen Überstände der Spindelmutter 18 zu beiden Seiten des Schwenklagerteils 1 sind so bemessen, dass sowohl die Führungsleiste 10 als auch die Schwenkstange 26 mit Abstand gegenüber dem Schwenklagerteil 1 angeordnet sind, das heißt, sie können eine Schwenkbewegung der Spindelmutter 18 gegenüber dem Schwenklagerteil 1 berührungsfrei mitmachen. Diese Schwenkbewegung, welche dem Verstellen der Biegewange 2 gegenüber dem Schwenklagerteil 1 dient, wird in Zusammenhang mit Fig. 5 genauer erläutert.The spindle nut 18 has, as in Fig. 2b shown, at both ends mounting wedges 22, 23 for each three mounting screws 24. Thus, on the one hand, the guide rail 10, which has a groove 25 for the associated mounting wedge 22 of the spindle nut 18 has and on the other hand, a pivot rod 26 which has a groove 27 for the mounting wedge 23. The axial projections of the spindle nut 18 on both sides of the pivot bearing part 1 are dimensioned so that both the guide rail 10 and the pivot rod 26 are arranged at a distance from the pivot bearing part 1, that is, they can pivotal movement of the spindle nut 18 relative to the pivot bearing part 1 without contact participate. This pivoting movement, which serves to adjust the bending beam 2 relative to the pivot bearing part 1, is associated with Fig. 5 explained in more detail.

Am oberen Ende der Führungsleiste 10 ist mittels zweier Schrauben 28 ein zum Schwenklagerteil 1 hin vorspringender Anschlagklotz 29 befestigt, der in einen Ausschnitt 30 einer Rasterplatte 31 hineinragt. Ein Verschwenken der Spindelmutter 18 ist daher durch die Größe des Ausschnitts 30 innerhalb der Rasterplatte 31 begrenzt, wie in den Fig. 2, 2c und 4 näher dargestellt ist. Neben dem Ausschnitt 30 besitzt die Rasterplatte 31 noch verschiedene Verstellnuten, wie näher zu den Fig. 2 und 4 beschrieben, in welche Zähne 32 eingreifen, welche an Zahnplatten 33 ausgebildet sind, die am oberen Ende des Anschlussteils 11 der Biegewange 2 mittels Schrauben 34 (Fig. 3) befestigt sind. Die Zahnplatten 33 grenzen zu beiden Seiten an die nach oben durchgehende Führungsnut 35 für die Führungsleiste 10 an.At the upper end of the guide rail 10 is fixed by means of two screws 28 to the pivot bearing part 1 projecting stop block 29 which projects into a cutout 30 of a grid plate 31. A pivoting of the spindle nut 18 is therefore limited by the size of the cutout 30 within the grid plate 31, as in the Fig. 2, 2c and 4 is shown in more detail. In addition to the cutout 30, the grid plate 31 has still different Verstellnuten, as closer to the Fig. 2 and 4 in which teeth 32 engage, which are formed on tooth plates 33, which at the upper end of the connecting part 11 of the bending cheek 2 by means of screws 34 (FIGS. Fig. 3 ) are attached. The tooth plates 33 adjoin on both sides of the upwardly extending guide groove 35 for the guide rail 10.

In Fig. 2 ist das Schwenklagerteil 1 mit etwa quadratischem Querschnitt neben dem zugeordneten Ende der Schwenkwelle 8 dargestellt. Es besitzt eine Lagerbohrung 36 für die Schwenkwelle 8 mit einer Keilnut 37 zur Herstellung der Drehverbindung mittels des in Fig. 1 dargestellten Keils 9. In Fig. 2 sind mit strichlierten Linien die Querbohrung 19 für die Aufnahme der Spindelmutter 18 im Schwenklagerteil 1 sowie die Freibohrung 20 des Schwenklagerteils 1 für den Eintritt der Spindel 13 dargestellt.In Fig. 2 the pivot bearing part 1 is shown with an approximately square cross section next to the associated end of the pivot shaft 8. It has a bearing bore 36 for the pivot shaft 8 with a keyway 37 for producing the rotary joint by means of in Fig. 1 illustrated wedge 9. In Fig. 2 are shown with dashed lines, the transverse bore 19 for receiving the spindle nut 18 in the pivot bearing part 1 and the free bore 20 of the pivot bearing part 1 for the entry of the spindle 13.

Auf der Anschlussseite zur Biegewange hin besitzt das Schwenklagerteil 1 einen Abschnitt 38, oberhalb welchem das Rasterteil 31 mittels dreier Schrauben 39 befestigt ist. An seinem unteren Ende besitzt das Rasterteil 31 einen Ausschnitt 30 für den Eintritt des Anschlagklotzes 29, welcher am oberen Ende der Führungsleiste 10 befestigt ist (siehe auch Fig. 2c).On the connection side to the bending cheek down the pivot bearing part 1 has a portion 38, above which the raster portion 31 is fixed by means of three screws 39. At its lower end, the raster portion 31 has a cutout 30 for the entry of the stop block 29, which is attached to the upper end of the guide rail 10 (see also Fig. 2c ).

Oberhalb des Ausschnitts 30 besitzt die Rasterplatte 31 zwei schräge Verstellnuten 41 und zwei gerade Verstellnuten 42. Letztere definieren die Verstellrichtung der Biegewange 2 in ihrer nach unten geschwenkten Ausgangslage; die schrägen Verstellnuten 41 definieren die Verstellrichtung der Biegewange 2 in ihrer nach oben geschwenkten Ausgangslage. Während des Verstellens der Biegewange 2 ist diese mittels des Linearantriebs aus den Verstellnuten 41, 42 ausgefahren; erst durch das Einfahren der Zähne 32 entweder in die schrägen Verstellnuten 41 oder in die geraden Verstellnuten 42 wird die Ausgangslage der Biegewange 2 entweder in deren oberen oder unteren Anschlagposition definiert. Während des Verfahrens der Biegewange 2 in ihre jeweilige Ausgangslage verschieben sich die Zähne 32 innerhalb der der jeweiligen Ausgangslage zugeordneten Verstellnuten 41 bzw. 42.Above the cutout 30, the grid plate 31 has two oblique Verstellnuten 41 and two straight Verstellnuten 42. The latter define the adjustment of the bending cheek 2 in its downwardly pivoted starting position; the oblique Verstellnuten 41 define the adjustment of the bending beam 2 in its upwardly pivoted starting position. During the adjustment of the bending beam 2, this is extended by means of the linear drive from the Verstellnuten 41, 42; only by the retraction of the teeth 32 either in the oblique Verstellnuten 41 or in the straight Verstellnuten 42 is the starting position of the Biegegewange 2 defined either in the upper or lower stop position. During the process of the bending cheek 2 in their respective starting position, the teeth 32 move within the respective initial position associated Verstellnuten 41 and 42nd

Fig. 2a zeigt die Schwenkstange 26 mit Befestigungsnut 27 auf ihrer der Spindelmutter 18 zugewandten Seite, so dass eine Verdrehung der Schwenkstange 26 entsprechend auf die Spindelmutter 18 um deren Verstellachse 44 erfolgen kann. Fig. 2a shows the pivot rod 26 with mounting groove 27 on its spindle nut 18 side facing, so that a rotation of the pivot rod 26 can be carried out according to the spindle nut 18 about the adjustment axis 44.

Fig. 4 zeigt in vergrößerter Darstellung die Rasterplatte 31 mit den drei Befestigungsschrauben 39, den geraden Verstellnuten 42 und den schrägen Verstellnuten 41 sowie dem Ausschnitt 30. Der Ausschnitt 30 besitzt einerseits eine geradlinige Anschlagfläche 45, andererseits eine dazu schräg verlaufende Anschlagfläche 46. Fig. 4a zeigt einen Schnitt gemäß a―a der Fig. 4 und Fig. 4b einen Schnitt gemäß b-b der Fig. 4. Fig. 4 shows an enlarged view of the grid plate 31 with the three mounting screws 39, the straight Verstellnuten 42 and the oblique Verstellnuten 41 and the cutout 30. The cutout 30 has on the one hand a rectilinear stop surface 45, on the other hand an inclined thereto abutment surface 46th Fig. 4a shows a section according to a-a of Fig. 4 and Fig. 4b a section according to bb the Fig. 4 ,

In Fig. 4 ist die Führungsleiste 10 so eingezeichnet, dass ihr Anschlagklotz 29 gegen die geradlinig verlaufende Anschlagfläche 45 des Ausschnitts 30 anliegt. In dieser Position der Führungsleiste 10 ist das Anschlussteil 11 der Biegewange 2 für deren untere Ausgangslage ausgerichtet, das heißt in dieser Ausgangslage sind die Zähne 32 in die zugehörigen geraden Verstellnuten 42 eingefahren.In Fig. 4 the guide strip 10 is drawn so that its stop block 29 rests against the rectilinear stop surface 45 of the cutout 30. In this position, the guide rail 10, the connecting part 11 of the bending beam 2 is aligned for the lower starting position, that is, in this initial position, the teeth 32 are retracted into the associated straight Verstellnuten 42.

Zusätzlich ist die Führungsleiste 10 noch mit strichlierten Linien in ihrer schrägen, nämlich verstellten Anschlagposition eingezeichnet, die dann erreicht wird, wenn die auf der Zeichnung rechte Kante des Anschlagklotzes 29 gegen die zugeordnete Fläche 46 des Ausschnitts 30 der Rasterplatte 31 anschlägt. In dieser schrägen Anschlagposition ist die Ausgangslage der Biegewange 2 in ihrer oberen Schwenkposition definiert, wobei die Zähne 32, wie strichliert eingezeichnet, in die schrägen Verstellnuten 41 eingefahren sind. Dabei kann die Einfahrtiefe in Anpassung an die Blechstärke des Werkstücks oder die gewünschte Ausprägung des Biegeverlaufs unterschiedlich sein. In Fig. 4 sind überdies auch noch die Zahnplatten 33 strichliert mit den Befestigungsschrauben 34 eingezeichnet und zwar in der Schräglage entsprechend den schrägen Verstellnuten 42 bzw. der schrägen Anschlagfläche 46 für die strichliert gezeichnete schräge Anschlagposition des Anschlagklotzes 29.In addition, the guide bar 10 is still marked with dashed lines in its oblique, namely displaced stop position, which is achieved when the right in the drawing edge of the stop block 29 abuts against the associated surface 46 of the cutout 30 of the grid plate 31. In this oblique stop position, the starting position of the bending cheek 2 is defined in its upper pivot position, wherein the teeth 32, as shown in dashed lines, are retracted into the oblique Verstellnuten 41. In this case, the entry depth may be different in adaptation to the sheet thickness of the workpiece or the desired expression of the bending curve. In Fig. 4 Moreover, the toothed plates 33 are also shown by dashed lines with the fastening screws 34 and indeed in the oblique position corresponding to the oblique adjustment grooves 42 and the oblique stop surface 46 for the obliquely marked stop position of the stop block 29.

Fig. 5 zeigt einen Abschnitt des seitlichen Maschinenständers 7 mit zwei daran befestigten, als Rollen ausgebildeten Anschlägen, nämlich einem unteren Anschlag 48 zum Einstellen der Schwenkstange 26 in der unteren Ausgangslage der Biegewange 2 einerseits und einem oberen Anschlag 49, welcher so positioniert ist, dass er die Schwenkstange 26 der oberen Ausgangslage der Biegewange 2 entsprechend schräg stellt. Die obere Ausgangslage der Biegewange 2 mit Biegeschiene 3 ist punktiert dargestellt. Man erkennt die entsprechende Verstellung der Schwenkstange 26, derart, dass die rechte Arbeitskante der Biegeschiene 3 genau die Biegelinie des Werkstücks 50 trifft. Zur Darstellung gemäß Fig. 5 ist davon auszugehen, dass die Schwenklage der (nicht dargestellten) Biegewange 2 mit jener des gezeichneten Schwenklagerteils 1 übereinstimmt, denn mit der am Schwenklagerteil 1 drehbar gelagerten Führungsleiste 10 wird die Biegewange 2 über die Führungsnut 35 entsprechend mitbewegt. Daraus ergibt sich die jeweilige Ausgangslage der Biegeschiene 3 gegenüber dem Werkstück 50. Somit erfolgt die Verstellung der Biegewange 2 zwischen der oberen Ausgangslage und der unteren Ausgangslage mittels der beiden Anschläge 48, 49, durch welche die Schwenkstange 26 der jeweiligen Ausgangslage entsprechend verschwenkt wird. Das Verschwenken setzt allerdings voraus, dass die Biegewange 2 vorher mittels des Spindelantriebs soweit aus ihrer Ausgangslage verfahren wird, dass die Zähne 32 sich außerhalb der Verstellnuten 41, 42 befinden. Das Einfahren der Zähne 32 in die Verstellnuten 41, 42 wird hinsichtlich ihrer genauen Ausrichtung gewährleistet nicht nur durch die Anschläge 48, 49 des Maschinenständers 7 sondern zusätzlich durch die seitlichen Anschläge 45, 46 des Ausschnitts 30 der Rasterplatte 31, wobei die Anschlagflächen 45, 46 die beiden seitlichen Schwenklagen des Anschlagklotzes 29 am Führungsteil 10 begrenzen. Damit ergibt sich über die Führungsnut 35 im Anschlussteil 11 der Biegewange 2 deren genaue Schwenklage für die obere bzw. untere Ausgangslage für das Negativbiegen aus der oberen Position und das Positivbiegen aus der unteren Position der Biegewange 2. In Fi. 5 sind zur besseren Orientierung zusätzlich noch das Biegewerkzeug 51 der Oberwange und das Biegewerkzeug 52 der Unterwange der Schwenkbiegemaschine strichliert gezeichnet. Das Werkstück 50 wurde bereits durch Positivbiegen um die Biegekante 53 verformt und kann nun aus der punktierten oberen Ausgangslage durch Negativbiegen nach unten verformt werden. Fig. 5 shows a portion of the lateral machine stand 7 with two mounted as rollers stops, namely a lower stop 48 for adjusting the pivot rod 26 in the lower starting position of the bending beam 2 on the one hand and an upper stop 49, which is positioned so that it the pivot rod 26 of the upper starting position of the bending beam 2 is inclined accordingly. The upper starting position of the bending beam 2 with bending rail 3 is shown in dotted. It can be seen the corresponding adjustment of the pivot rod 26, such that the right working edge the bending bar 3 exactly hits the bending line of the workpiece 50. For presentation according to Fig. 5 is assumed that the pivotal position of the (not shown) bending cheek 2 coincides with that of the drawn pivot bearing part 1, because with the rotatably mounted on the pivot bearing part 1 guide rail 10, the bending beam 2 is moved along via the guide groove 35 accordingly. Thus, the adjustment of the bending beam 2 between the upper starting position and the lower starting position by means of the two stops 48, 49, by which the pivot rod 26 of the respective starting position is pivoted accordingly takes place. The pivoting requires, however, that the bending cheek 2 is previously moved by means of the spindle drive so far from its initial position that the teeth 32 are outside the Verstellnuten 41, 42. The retraction of the teeth 32 in the Verstellnuten 41, 42 is ensured with respect to their exact alignment not only by the stops 48, 49 of the machine stand 7 but additionally by the lateral stops 45, 46 of the cutout 30 of the grid plate 31, wherein the stop surfaces 45, 46 limit the two lateral pivotal positions of the stop block 29 on the guide member 10. This results on the guide groove 35 in the connecting part 11 of the bending cheek 2 whose exact pivot position for the upper or lower starting position for the negative bending from the upper position and the positive bending from the lower position of the bending cheek 2. In Fi. 5 are for better orientation additionally still the bending tool 51 of the upper beam and the bending tool 52 drawn the underside of the folding machine in dashed lines. The workpiece 50 has already been deformed by positive bending about the bending edge 53 and can now be deformed from the punctured top starting position by negative bending down.

Claims (9)

  1. A swivel bending machine for the counter-bending of a work piece (50) of sheet metal, which is held between tools (51, 52) of an upper cheek and a lower cheek, by means of a bending rail (3) on a bending cheek (2), which can be swivelled relative to a bending edge between a lower initial position (positive bending) and an upper initial position (negative bending) around a machine-fixed swivelling axis (5), and wherein the bending cheek (2) is connected with lateral connection parts in each case to a swivel bearing part (1) via a longitudinal guide, which is adjustable in a plane normal to the swivelling axis (5) in such a way that, after the swivelling of the bending cheek (2), the bending rail (3) arrives at an initial position which is offset by its width and which corresponds to a change of the working edge of the bending rail (3),
    characterised in
    that for the adjustment of the longitudinal guide, an end of a guide rail (10) of the longitudinal guide is constituted adjustable, said end being adjacent to the bending rail (3),
    that the guide rail (10) can be adjusted with its loose end at least between two stops (45, 46) and that detachable locking means in respect of the given initial position of the bending rail (3) are assigned to each stop position.
  2. The swivel bending machine according to claim 1,
    characterised in
    that for the adjustment of the guide rail (10), its end remote from the bending rail (3) is mounted rotatably in the swivel bearing part (1).
  3. The swivel bending machine according to claim 1,
    characterised in
    that a stop block (29) projecting towards the swivel bearing part (1) is provided at the loose end of the guide rail (10), said stop block limiting the adjustment of the guide rail (10) between stops (45, 46) on the part of the swivel bearing part (1) corresponding to the two initial positions of the bending rail (3).
  4. The swivel bending machine according to claim 1,
    characterised in
    that the locking means of the longitudinal guide up to the arrival at the respective initial position of the bending rail (3) comprise a connecting-link guide between the swivel bearing part (1) and the connection part (11) of the bending cheek (2) associated with the longitudinal guide.
  5. The swivel bending machine according to claim 1,
    characterised in
    that a notched plate (31) is fixed detachably to the swivel bearing part (1), on which notched plate the stops (45, 46) and locking means for the longitudinal guide of the bending cheek (2) are constituted in a manner adapted to a work piece (50).
  6. The swivel bending machine according to claim 5,
    characterised in
    that the notched plate (31) is fixed to the swivel bearing part (1) adjacent to the loose end of the guide rail (10) and has a cutout (30) which is open towards the end of the guide rail (10) and into which its stop block (29) enters and that it comprises above the cutout (30) downwardly open adjustment grooves (41, 42) of the connecting-link guide.
  7. The swivel bending machine according to claim 1,
    characterised in
    that a swivel shaft is mounted rotatably in a through-bore (19) of the swivel bearing part (1), to the end face of which shaft adjacent to the bending cheek (2) the associated end of the guide rail (10) is fixed and to the other end face of which shaft a swivel rod (26) is fixed, which cooperates with stops (48, 49) on the adjacent machine stand (7) to limit the swivel path of the bending cheek (2) for the positive/negative bending.
  8. The swivel bending machine according to claim 1,
    characterised in
    that for the adjustment of the bending cheek (2) in its longitudinal guide, a spindle drive is provided in the swivel bearing part (1), the spindle (13) whereof cooperates with a threaded bore (40) straight through the axis of rotation of the swivel shaft and is supported with it driven end in the connection part (11) of the bending cheek (2).
  9. The swivel bending machine according to claim 8,
    characterised in
    that the swivel shaft is constituted as a spindle nut (18) of the spindle drive.
EP20110000931 2010-02-23 2011-02-05 Swing-folding machine Not-in-force EP2359948B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010009074A DE102010009074A1 (en) 2010-02-23 2010-02-23 Folding Machine

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EP2359948A1 EP2359948A1 (en) 2011-08-24
EP2359948B1 true EP2359948B1 (en) 2015-01-28

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Application Number Title Priority Date Filing Date
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DK (1) DK2359948T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20132219A1 (en) * 2013-12-30 2015-07-01 Cosma S R L SHEET BENDING MACHINE
CN118045922B (en) * 2024-04-16 2024-06-25 烟台海召仓储设备有限公司 Progressive bending machine for shelf plate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9307907U1 (en) * 1993-05-25 1993-07-22 Griebel, Edgar, 97199 Ochsenfurt Bending machine
DE19529126A1 (en) * 1995-08-08 1997-02-13 Reinhardt Gmbh Maschbau Device for bending a sheet
DE19530573A1 (en) * 1995-08-19 1997-02-20 Reinhardt Gmbh Maschbau Workpiece stop for flat material processing machines
EP1649946A1 (en) 2004-10-25 2006-04-26 Hans Schröder Maschinebau GmbH Bending press
DE102006047109A1 (en) * 2006-09-27 2008-04-03 Ras Reinhardt Maschinenbau Gmbh processing machine
DE102007039848B4 (en) * 2007-08-23 2009-10-15 Hans Schröder Maschinenbau GmbH Swivel bending machine for bending a workpiece from sheet metal

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EP2359948A1 (en) 2011-08-24
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