EP0513864A2 - Method of using a tube bending machine - Google Patents

Method of using a tube bending machine Download PDF

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Publication number
EP0513864A2
EP0513864A2 EP92113248A EP92113248A EP0513864A2 EP 0513864 A2 EP0513864 A2 EP 0513864A2 EP 92113248 A EP92113248 A EP 92113248A EP 92113248 A EP92113248 A EP 92113248A EP 0513864 A2 EP0513864 A2 EP 0513864A2
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EP
European Patent Office
Prior art keywords
clamping
bending
tube
pipe
clamped
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Granted
Application number
EP92113248A
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German (de)
French (fr)
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EP0513864A3 (en
EP0513864B1 (en
Inventor
Rigobert Dipl.-Ing. Schwarze
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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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/021—Construction of forming members having more than one groove
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member

Definitions

  • the invention relates to a method for operating a pipe bending machine, and in particular to a method for removing the bent pipe section from the clamping body of the bending template.
  • a tube bending machine is known from DE-B-1 297 064, in which the tube to be bent is clamped between the clamping body of a bending template and the counter-clamping body of a clamping jaw.
  • Bending template and clamping jaw are part of a swiveling bending table.
  • the tube held between the clamping bodies is bent around the bending template.
  • a push-off device is provided which acts on the still unbent tube section and pushes the tube away from the bending template.
  • a separate push-off device must be provided in order to detach the tube from the bending template.
  • the invention has for its object to provide a method for operating a pipe bending machine, in which the pipe bending machine can be simplified.
  • the bending template is rotated further by a certain amount, in order to achieve by this additional rotation that the clamping surface of the bending template is removed from the bent pipe end.
  • the rotation of the bending template is thus carried out with the pipe standing above the amount necessary for the bending to such an extent that the bent pipe end no longer lies in the clamping surface of the bending template and the bending template is thus moved further when the pipe is standing.
  • the end result of the proposal according to the invention is that the sequence of movements is simplified and the accuracy of the bending is increased. If, according to an earlier method for releasing the bent pipe section from the clamping surface of the clamping jaw located on the bending template, the pipe is moved further by an additional movement in its axial direction, then this additional movement for detaching from the clamping jaw must be carried out in the control program must be given special consideration so that the next bend takes place in the right place after a corresponding pipe feed. The feed rate for moving the bent pipe section out of the clamping jaw must therefore be taken into account.
  • Figure 1 shows a conventional pipe bending machine with a feed carriage 10, which is on one or more guide rails 11 on the top of the machine housing 12 can slide back and forth.
  • the feed carriage 10 has a hollow cylinder 13, in the interior of which there is a clamping sleeve 14 in which the end region of the pipe section or pipe 15 to be bent is clamped.
  • the pipe section 15 is guided around a pivotably mounted bending template 16 which has a groove 17 for the pipe which corresponds to the pipe radius.
  • a clamping jaw 19 is pressed by means of a clamping device 18, which also has a groove corresponding to the pipe radius as clamping surface and clamps the pipe 15 on the bending template 16.
  • the bending template is provided with a releasably attached clamping jaw 25 arranged thereon.
  • a hydraulic cylinder 20 is shown as an example, which moves the clamping device 18 of the clamping jaw 19 towards the bending template 16 for clamping the pipe or removes it from this template.
  • the bending template 16 is fixedly arranged on the bending table 21, while the clamping device 18 can be pushed back and forth in the indicated arrow direction 22 via the cylinder 20 shown as an example. If the bending template 16 is pivoted over the bending table 21 together with the clamping jaw 19 in the direction of the arrow 23, so the pipe section 15 receives a curvature which corresponds to the profile of the bending template 16. During this bending process, the end part of the pipe section 15 remains clamped in the clamping sleeve 14 of the feed carriage 10 in order to safely guide the pipe section in all positions.
  • a slide rail 24 is pressed onto this pipe section part, which also has a groove that corresponds to the pipe radius.
  • the clamping sleeve 14 of the feed carriage 10 not only clamps the pipe section 15 firmly, but also turns it by amounts up to 360 ° if successive pipe bends are to be bent in different directions.
  • a hydraulic motor rotates a worm which interacts with a worm wheel (not shown) which is connected to the clamping sleeve 14.
  • FIG. 2 shows an exhaust pipe which can be produced with the bending machine and in which curved sections or pipe bends S 1 and S 2 as well as S 3 and S 4 are directly connected. There are also linear intermediate lengths L 1, L 2 and L 3, which, however, do not need to be present except for the length L 1.
  • the tube is provided with an expansion 26 at its front end.
  • Figure 3 shows that the jaw holder 18 is provided on both sides with cantilevers 27 and 27a, which protrude in the direction of the bending template 16 and carry at their front end via an axis of rotation 28 the counter jaw 19, which is designed according to the embodiment as a rectangular body and four Has clamping surfaces, which are provided with semicircular depressions in cross section, which give the clamping surfaces 29, 30, 31 and 32. These clamping surfaces have different spatial shapes, but the common factor is that they encircle the pipe section to be clamped in a semicircle over the entire clamping length.
  • the clamping jaw 25 arranged on the bending template 16 has three different circumferential grooves 33, 34 and 35, which are also shown in FIG.
  • the clamping jaw 25 is fastened to the bending template 16 by screws, not shown in the drawing, i.e. that this is not slidably disposed relative to the bending template. This solution is particularly advantageous because it does not require any movement mechanisms.
  • FIG. 3 shows that the clamping jaw 25 is arranged on the bending template 16 opposite another clamping jaw 36 which has a clamping surface with different radii of its half-shells. So the part 37 is provided with a larger radius of curvature and the part 38 with a smaller radius. This is done in order to clamp the widened end 26 in a pipe 15 according to FIG. 2 through the half-shell-shaped section 37 and the subsequent part with the radius of smaller cross section 39.
  • FIG. 4 shows that the clamping jaw 25 with the recesses 33, 34 and 35 arranged in it cannot grip around the tube section clamped in each case over half the circular area, but can only grip around incompletely in the areas in which the bends 34 and 35 intersect.
  • FIG. 5 shows that two clamping bodies 25 and 25a are arranged one above the other on the bending template 16, the clamping body 25 having three different clamping surfaces and the clamping body 25a having two different clamping surfaces.
  • the clamping bodies 25 and 25a can be adjusted in the vertical direction by means of a hydraulic piston-cylinder arrangement in such a way that the cylinder 36 is arranged inside the bending template 16 and the piston rod 37 protrudes upward, which has a cross member 38 which is connected to the jaws 25 and 25a.
  • the piston-cylinder arrangement can thus, as shown in FIG. 5, selectively act on the clamping jaws 25, but also by lowering the clamping jaws 25a.
  • the solution proposed in FIG. 5, shown on the bending template can also be present on the counter-jaw holder 18, with the proviso that, in contrast to FIG. 3, the clamping surfaces are not arranged on a body rotatable about a horizontal axis, but on a body that can be moved in the vertical plane.
  • the clamping surfaces arranged one above the other are not as favorable as the clamping surfaces arranged in different planes, which are shown in FIG. 3 and can be rotated about the axis of rotation 28. In some cases, three surfaces, but also five or six surfaces can be used.
  • FIG. 6 shows that the bending template 16, shown in the drawings FIG. 6B and FIG. 6C, has a clamping jaw 25 which has a uniform design of its clamping surface, which can also be seen in perspective from FIG. 6A with the proviso that one has a diameter there is an enlarged half-shell 39 and a half-shell 40 with a smaller diameter, for example with the tube end 26 widened in diameter with the adjoining one Pinch part of the tube with the usual diameter.
  • the counter clamping jaw 19 corresponding to FIG.
  • FIG. 6A thus shows a design in which the pipe section to be clamped is completely grasped over the angular amount of 180 ° over the length of the pipe section to be clamped in, while the clamping jaw 25 arranged on the bending template 16 likewise has a full surface after the training in FIG. 6C 6 shows a pinch extending over an angular amount of 180 °, but FIG.
  • FIG. 7 shows the counter clamping jaws 19 with the proviso that a plurality of clamping surfaces, in the present case two clamping surfaces, are also present on a clamping surface.
  • these are individually designed over their entire surface so that, according to the invention, they interact with a counter-clamping surface that does not cover the entire surface of the tube, i.e. with respect to the length of the counter-clamping surface. over an amount of 180 °, as can be seen, for example, from the node of the drawing in FIG.
  • the counter-clamping jaws 19 is slidably mounted in the indicated double arrow direction 41.

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

Abstract

In a tube bending machine with a bending table which can be swivelled about an axis and has a bending form and a clamping jaw displaceable relative to the latter and is provided with a displaceable feed carriage which has a rotatable clamping sleeve, the bending form and the clamping jaw having mutually associated clamping bodies which are adapted to straight and curved portions, to be clamped, of the tube to be bent, have clamping surfaces and are in each case spatially separated and can be moved into the working position, one clamping body (25) has a clamping surface which has a plurality of different contours (33, 34, 35) of the tube section to be clamped while the clamping surface, associated with it during operation, of the other clamping body (19) has only one clamping surface (30) corresponding to the contour of the tube section to be clamped and hence surrounds the tube section to be clamped fully over an angle of 180 DEG on the associated side in contact with it. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zum Betrieb einer Rohrbiegemaschine, und insbesondere ein Verfahren zum Entfernen des gebogenen Rohrabschnitts von dem Klemmkörper der Biegeschablone.The invention relates to a method for operating a pipe bending machine, and in particular to a method for removing the bent pipe section from the clamping body of the bending template.

Aus DE-B-1 297 064 ist eine Rohrbiegemaschine bekannt, bei der das zu biegende Rohr zwischen dem Klemmkörper einer Biegeschablone und dem Gegenklemmkörper einer Klemmbacke eingespannt wird. Biegeschablone und Klemmbacke sind Bestandteil eines schwenkbaren Biegetisches. Durch Drehen des Biegetisches wird das zwischen den Klemmkörpern festgehaltene Rohr um die Biegeschablone herum gebogen. Um das gebogene Rohr von der Biegeschablone zu lösen, ist eine Abdrückvorrichtung vorgesehen, die auf den noch ungebogenen Rohrabschnitt einwirkt und das Rohr von der Biegeschablone fortdrückt. Bei dem bekannten Verfahren ist also eine eigene Abdrückvorrichtung vorzusehen, um das Rohr von der Biegeschablone zu lösen.A tube bending machine is known from DE-B-1 297 064, in which the tube to be bent is clamped between the clamping body of a bending template and the counter-clamping body of a clamping jaw. Bending template and clamping jaw are part of a swiveling bending table. By turning the bending table, the tube held between the clamping bodies is bent around the bending template. In order to detach the bent tube from the bending template, a push-off device is provided which acts on the still unbent tube section and pushes the tube away from the bending template. In the known method, therefore, a separate push-off device must be provided in order to detach the tube from the bending template.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Betrieb einer Rohrbiegemaschine anzugeben, bei dem die Rohrbiegemaschine vereinfacht werden kann.The invention has for its object to provide a method for operating a pipe bending machine, in which the pipe bending machine can be simplified.

Die Lösung dieser Aufgabe erfolgt erfindungsgemäß mit den im Patentanspruch angegebenen Merkmalen.This object is achieved according to the invention with the features specified in the patent claim.

Nach der Erfindung wird nach erfolgter Biegung die Biegeschablone um einen gewissen Betrag weitergedreht, um durch diese zusätzliche Drehung zu erreichen, daß die Klemmfläche der Biegeschablone von dem gebogenen Rohrende entfernt wird. Die Drehung der Biegeschablone wird also bei stehendem Rohr über das zur Biegung notwendige Maß soweit durchgeführt, daß das gebogene Rohrende nicht mehr in der Klemmfläche der Biegeschablone liegt und somit bei "stehendem Rohr" die Biegeschablone weiterbewegt wird. Dies hat den Vorteil, daß die Steuerung vereinfacht ist, weil nach dem Biegen des Rohres dessen Position bleibt und die Biegeschablone über das zur Biegung selbst notwendige Maß weitergedreht wird. Dieses "Weiterdrehen" erfolgt in einem Arbeitsgang und bedarf, weil mit diesem "Weiterdrehen" nicht eine weitere Biegung des Rohres erfolgt, lediglich der Lösung der Gegenklemmbacke.According to the invention, after bending has taken place, the bending template is rotated further by a certain amount, in order to achieve by this additional rotation that the clamping surface of the bending template is removed from the bent pipe end. The rotation of the bending template is thus carried out with the pipe standing above the amount necessary for the bending to such an extent that the bent pipe end no longer lies in the clamping surface of the bending template and the bending template is thus moved further when the pipe is standing. This has the advantage that the control is simplified, because after the pipe has been bent, its position remains and the bending template is rotated beyond the extent necessary for the bending itself. This "further turning" takes place in one work step and, because this "further turning" does not result in a further bending of the tube, only requires the release of the counter clamping jaw.

Der erfindungsgemäße Vorschlag führt im Endergebnis dazu, daß der Bewegungsablauf vereinfacht und die Genauigkeit des Biegens erhöht wird. Sofern nämlich nach einem früheren Verfahren zum Loslösen des gebogenen Rohrabschnittes aus der Klemmfläche der an der Biegeschablone befindlichen Spannbacke das Rohr durch eine zusätzliche Bewegung in dessen Achsrichtung weiterbewegt wird, dann muß diese zusätzliche Bewegung zur Loslösung aus der Spannbacke im Steuerprogramm besonders berücksichtigt werden, damit die nächste Biegung nach einem entsprechenden Rohrvorschub an richtiger Stelle erfolgt. Der Vorschub zum Herausbewegen des gebogenen Rohrabschnittes aus der Spannbacke muß somit berücksichtigt werden.The end result of the proposal according to the invention is that the sequence of movements is simplified and the accuracy of the bending is increased. If, according to an earlier method for releasing the bent pipe section from the clamping surface of the clamping jaw located on the bending template, the pipe is moved further by an additional movement in its axial direction, then this additional movement for detaching from the clamping jaw must be carried out in the control program must be given special consideration so that the next bend takes place in the right place after a corresponding pipe feed. The feed rate for moving the bent pipe section out of the clamping jaw must therefore be taken into account.

Es wurde erkannt, daß es für die Ermittlung und Durchführung des Biegeprogramms bedeutend einfacher ist, die Biegeschablone mit der an dieser befestigten Spannbacke über das zur Biegung notwendige Maß hinaus zu bewegen.It was recognized that it is significantly easier for the determination and implementation of the bending program to move the bending template with the clamping jaw attached to it beyond what is necessary for the bending.

Die Erfindung ist in den Zeichnungen beispielhaft erläutert.The invention is exemplified in the drawings.

Es zeigen:

Figur 1
eine Rohrbiegemaschine in perspektivischer Darstellung,
Figur 2
ein gebogenes Rohr in perspektivischer Darstellung,
Figur 3
eine Biegeschablone mit Klemmbacken und Gegenklemmbacken in perspektivischer Darstellung,
Figur 4
eine Biegeschablone mit an ihr angebrachter in axialer Richtung bewegbaren zweifachen doppelten Klemmbacke in einem vertikalen Schnitt,
Figur 5
eine Biegeschablone mit Klemmbacke, die mehrere unterschiedliche Klemmflächen aufweist,
Figur 6A - 6C
eine Biegeschablone 6B und 6C mit einheitlichem Klemmbacken, dem ein Gegenklemmbacken 6A zugeordnet ist,
Figur 7
eine Gegenklemmbacke, die an einer Fläche mehrere unterschiedliche Klemmflächen aufweist.
Show it:
Figure 1
a pipe bending machine in perspective,
Figure 2
a bent tube in perspective,
Figure 3
a bending template with clamping jaws and counter-clamping jaws in a perspective view,
Figure 4
a bending template with attached to it in the axial direction movable double jaw in a vertical section,
Figure 5
a bending template with a clamping jaw, which has several different clamping surfaces,
Figure 6A-6C
a bending template 6B and 6C with a uniform clamping jaw, to which a counter-clamping jaw 6A is assigned,
Figure 7
a counter clamping jaw, which has several different clamping surfaces on one surface.

Figur 1 zeigt eine herkömmliche Rohrbiegemaschine mit einem Vorschubwagen 10, der auf einer oder mehreren Führungsschienen 11 auf der Oberseite des Maschinengehäuses 12 hin- und hergleiten kann.Figure 1 shows a conventional pipe bending machine with a feed carriage 10, which is on one or more guide rails 11 on the top of the machine housing 12 can slide back and forth.

Der Vorschubwagen 10 hat einen Hohlzylinder 13, in dessen Innern sich eine Spannhülse 14 befindet, in welcher der Endbereich des zu biegenden Rohrstückes bzw. Rohres 15 eingespannt ist. Das Rohrstück 15 ist um eine schwenkbar gelagerte Biegeschablone 16 herumgeführt, welche eine dem Rohrhalbmesser entsprechende Rille 17 für das Rohr hat. An einem Teil des um die Biegeschablone 16 herumgeführten Rohrstückes 15 ist mittels einer Spanneinrichtung 18 eine Spannbacke 19 angedrückt, welcher ebenfalls eine den Rohrhalbmesser entsprechende Rille als Spannfläche hat und das Rohr 15 an der Biegeschablone 16 festklemmt. Dazu ist die Biegeschablone mit einer an dieser angeordneten, lösbar befestigten Klemmbacke 25 versehen. Es ist ein Hydraulikzylinder 20 beispielhaft dargestellt, der die Spanneinrichtung 18 der Spannbacke 19 zur Biegeschablone 16 zur Festklemmung des Rohres hin bewegt oder von dieser Schablone entfernt. Die Biegeschablone 16 ist an dem Biegetisch 21 fest angeordnet, während die Spanneinrichtung 18 über den beispielhaft dargestellten Zylinder 20 in angegebener Pfeilrichtung 22 hin- und herverschiebbar ist. Wird die Biegeschablone 16 über den Biegetisch 21 zusammen mit der Spannbacke 19 in Richtung des Pfeiles 23 umgeschwenkt, so erhält das Rohrstück 15 eine Krümmung, welche dem Profil der Biegeschablone 16 entspricht. Während dieses Biegevorganges bleibt der Endteil des Rohrstückes 15 in der Spannhülse 14 des Vorschubwagens 10 eingespannt, um das Rohrstück in allen Lagen sicher zu führen. Damit das zwischen Spannhülse 14 und Biegeschblone 16 freie Rohrstück 15 seitlich nicht ausknicken kann, ist an dieses Rohrstückteil eine Gleitschiene 24 angedrückt, die ebenfalls eine Rille hat, welche dem Rohrhalbmesser entspricht. Die Spannhülse 14 des Vorschubwagens 10 spannt das Rohrstück 15 nicht nur fest ein, sondern wendet es auch um Beträge bis zu 360°, wenn aufeinanderfolgende Rohrbiegungen nach verschiedenen Richtungen gekrümmt werden sollen. Zur Verdrehung der Spannhülse 14 dreht ein hydraulischer Motor eine Schnecke, die mit einem nicht dargestellten mit der Spannhülse 14 in Verbindung stehenden Schneckenrad zusammenwirkt.The feed carriage 10 has a hollow cylinder 13, in the interior of which there is a clamping sleeve 14 in which the end region of the pipe section or pipe 15 to be bent is clamped. The pipe section 15 is guided around a pivotably mounted bending template 16 which has a groove 17 for the pipe which corresponds to the pipe radius. On a part of the pipe piece 15 guided around the bending template 16, a clamping jaw 19 is pressed by means of a clamping device 18, which also has a groove corresponding to the pipe radius as clamping surface and clamps the pipe 15 on the bending template 16. For this purpose, the bending template is provided with a releasably attached clamping jaw 25 arranged thereon. A hydraulic cylinder 20 is shown as an example, which moves the clamping device 18 of the clamping jaw 19 towards the bending template 16 for clamping the pipe or removes it from this template. The bending template 16 is fixedly arranged on the bending table 21, while the clamping device 18 can be pushed back and forth in the indicated arrow direction 22 via the cylinder 20 shown as an example. If the bending template 16 is pivoted over the bending table 21 together with the clamping jaw 19 in the direction of the arrow 23, so the pipe section 15 receives a curvature which corresponds to the profile of the bending template 16. During this bending process, the end part of the pipe section 15 remains clamped in the clamping sleeve 14 of the feed carriage 10 in order to safely guide the pipe section in all positions. So that the pipe section 15 that is free between the clamping sleeve 14 and the bending template 16 cannot buckle laterally, a slide rail 24 is pressed onto this pipe section part, which also has a groove that corresponds to the pipe radius. The clamping sleeve 14 of the feed carriage 10 not only clamps the pipe section 15 firmly, but also turns it by amounts up to 360 ° if successive pipe bends are to be bent in different directions. In order to rotate the clamping sleeve 14, a hydraulic motor rotates a worm which interacts with a worm wheel (not shown) which is connected to the clamping sleeve 14.

Figur 2 zeigt ein Auspuffrohr, das mit der Biegemaschine herstellbar ist und bei dem sich gebogene Abschnitte bzw. Rohrbögen S 1 und S 2 sowie S 3 und S 4 unmittelbar anschließen. Es sind auch geradlinige Zwischenlängen L 1, L 2 und L 3 vorhanden, die aber bis auf die Länge L 1 nicht vorhanden zu sein brauchen. Das Rohr ist an seinem vorderen Ende mit einer Aufweitung 26 versehen.FIG. 2 shows an exhaust pipe which can be produced with the bending machine and in which curved sections or pipe bends S 1 and S 2 as well as S 3 and S 4 are directly connected. There are also linear intermediate lengths L 1, L 2 and L 3, which, however, do not need to be present except for the length L 1. The tube is provided with an expansion 26 at its front end.

Figur 3 zeigt, daß der Klemmbackenhalter 18 an beiden Seiten mit Auslegern 27 und 27a versehen ist, die in Richtung zur Biegeschablone 16 vorkragen und an ihrem vorderen Ende über eine Drehachse 28 die Gegenspannbacke 19 tragen, die nach dem Ausführungsbeispiel als Rechteckkörper ausgebildet ist und vier Spannflächen hat, die mit im Querschnitt halbkreisförmigen Vertiefungen versehen sind, die die Einspannflächen 29, 30, 31 und 32 ergeben. Diese Einspannflächen haben unterschiedliche Raumformen, doch die Gemeinsamkeit, daß sie den in diesen einzuspannenden Rohrabschnitt über die gesamte Einspannlänge halbkreisförmig umgreifen.Figure 3 shows that the jaw holder 18 is provided on both sides with cantilevers 27 and 27a, which protrude in the direction of the bending template 16 and carry at their front end via an axis of rotation 28 the counter jaw 19, which is designed according to the embodiment as a rectangular body and four Has clamping surfaces, which are provided with semicircular depressions in cross section, which give the clamping surfaces 29, 30, 31 and 32. These clamping surfaces have different spatial shapes, but the common factor is that they encircle the pipe section to be clamped in a semicircle over the entire clamping length.

Die an der Biegeschablone 16 angeordnete Spannbacke 25 hat nach dem Ausführunsbeispiel drei unterschiedliche Umfangsnuten 33, 34 und 35, die ebenfalls in Figur 4 dargestellt sind. Die Spannbacke 25 ist an der Biegeschablone 16 durch in der Zeichnung nicht dargestellte Schrauben befestigt, d.h. daß diese nicht relativ zur Biegeschablone verschiebbar angeordnet ist. Diese Lösung ist besonders vorteilhaft, weil sie keinerlei Bewegungsmechanismen benötigt.According to the exemplary embodiment, the clamping jaw 25 arranged on the bending template 16 has three different circumferential grooves 33, 34 and 35, which are also shown in FIG. The clamping jaw 25 is fastened to the bending template 16 by screws, not shown in the drawing, i.e. that this is not slidably disposed relative to the bending template. This solution is particularly advantageous because it does not require any movement mechanisms.

Figur 3 zeigt, daß der Spannbacke 25 gegenüberliegend an der Biegeschablone 16 eine weitere Spannbacke 36 angeordnet ist, die eine Spannfläche mit unterschiedlichen Radien ihrer Halbschalen aufweist. So ist der Teil 37 mit größerem Krümmungsradius und der Teil 38 mit kleinerem Radius versehen. Dies geschieht, um bei einem Rohr 15 nach Figur 2 das aufgeweitete Ende 26 durch den halbschalenförmigen Abschnitt 37 und den anschließenden Teil mit dem Radius kleineren Querschnitt 39 festzuklemmen.FIG. 3 shows that the clamping jaw 25 is arranged on the bending template 16 opposite another clamping jaw 36 which has a clamping surface with different radii of its half-shells. So the part 37 is provided with a larger radius of curvature and the part 38 with a smaller radius. This is done in order to clamp the widened end 26 in a pipe 15 according to FIG. 2 through the half-shell-shaped section 37 and the subsequent part with the radius of smaller cross section 39.

Figur 4 zeigt, daß die Klemmbacke 25 mit dem in dieser angeordneten Vertiefungen 33, 34 und 35 dem jeweils eingespannten Rohrabschnitt nicht auf halber Kreisfläche umgreifen kann, sondern in den Bereichen, in denen die Abbiegungen 34 und 35 sich überschneiden, nur unvollständig umgreifen.FIG. 4 shows that the clamping jaw 25 with the recesses 33, 34 and 35 arranged in it cannot grip around the tube section clamped in each case over half the circular area, but can only grip around incompletely in the areas in which the bends 34 and 35 intersect.

Dies ist jedoch nach der Erkenntnis der vorliegenden Erfindung unschädlich, sofern die Gegenklemmbacke das Rohr um den Betrag von 180°, d.h. halbschalenförmig, über die Länge des einzuklemmenden Rohrabschnittes vollflächig umgreift.However, according to the knowledge of the present invention, this is harmless, provided that the counter-jaw grips the pipe by the amount of 180 °, i.e. half-shell-shaped, encompasses the entire surface over the length of the pipe section to be clamped.

Figur 5 zeigt, daß an der Biegeschablone 16 zwei Klemmkörper 25 und 25a übereinander angeordnet sind, wobei der Klemmkörper 25 drei unterschiedliche Klemmflächen, der Klemmkörper 25a zwei unterschiedliche Klemmflächen aufweist. Die Klemmkörper 25 und 25a sind in Vertikalrichtung verstellbar durch eine hydraulische Kolben-Zylinder-Anordnung in der Weise, daß der Zylinder 36 innerhalb der Biegeschablone 16 angeordnet ist und die Kolbenstange 37 nach oben herausragt, die einen Querträger 38 hat, der mit den Klemmbacken 25 und 25a verbunden ist. Durch die Kolben-Zylinder-Anordnung kann somit wahlweise, wie Figur 5 zeigt, der Klemmbachen 25, aber auch durch Absenken der Klemmbacken 25a wirksam sein.FIG. 5 shows that two clamping bodies 25 and 25a are arranged one above the other on the bending template 16, the clamping body 25 having three different clamping surfaces and the clamping body 25a having two different clamping surfaces. The clamping bodies 25 and 25a can be adjusted in the vertical direction by means of a hydraulic piston-cylinder arrangement in such a way that the cylinder 36 is arranged inside the bending template 16 and the piston rod 37 protrudes upward, which has a cross member 38 which is connected to the jaws 25 and 25a. The piston-cylinder arrangement can thus, as shown in FIG. 5, selectively act on the clamping jaws 25, but also by lowering the clamping jaws 25a.

Es sei bemerkt, daß die in Figur 5 vorgeschlagene Lösung, dargestellt an der Biegeschablone, auch an dem Gegenklemmbackenhalter 18 vorhanden sein kann mit der Maßgabe, daß abweichend von Figur 3 die Klemmflächen nicht an einen um eine horizontale Achse drehbaren Körper angeordnet sind, sondern an einem in vertikaler Ebene verschiebbaren Körper. An dieser Stelle sei aber auch bemerkt, daß die übereinander angeordneten Klemmflächen nicht so günstig sind wie die in verschiedenen Ebenen angeordneten Klemmflächen, die in Figur 3 dargestellt sind und um die Drehachse 28 drehbar sind. In manchen Fällen können drei Flächen, aber auch fünf oder sechs Flächen Anwendung finden.It should be noted that the solution proposed in FIG. 5, shown on the bending template, can also be present on the counter-jaw holder 18, with the proviso that, in contrast to FIG. 3, the clamping surfaces are not arranged on a body rotatable about a horizontal axis, but on a body that can be moved in the vertical plane. At this point, however, it should also be noted that the clamping surfaces arranged one above the other are not as favorable as the clamping surfaces arranged in different planes, which are shown in FIG. 3 and can be rotated about the axis of rotation 28. In some cases, three surfaces, but also five or six surfaces can be used.

Figur 6 zeigt, daß die Biegeschablone 16, dargestellt in den Zeichnungen Figur 6B und Figur 6C eine Klemmbacke 25 hat, die eine einheitliche Ausbildung ihrer Klemmfläche aufweist, die auch in perspektivischer Darstellung aus Figur 6A zu ersehen ist mit der Maßgabe, daß eine im Durchmesser vergrößerte Halbschale 39 vorhanden ist und eine im Durchmesser geringere Halbschale 40, um beispielsweise das im Durchmesser erweiterte Rohrende 26 mit dem anschliessenden Teil des Rohres üblichen Durchmessers einzuklemmen. Die Gegenklemmbacke 19 entsprechend Figur 6A zeigt somit eine Ausbildung, bei der der einzuklemmende Rohrabschnitt über den Winkelbetrag von 180° über die Länge des einzuklemmenden Rohrabschnittes vollständig erfaßt wird, während die an der Biegeschablone 16 angeordnete Klemmbacke 25 nach der Ausbildung in Figur 6C ebenfalls eine vollflächige, über einen Winkelbetrag von 180° sich erstreckende Einklemmung zeigt, aber Figur 6B diese vollflächige Einklemmung nur an den wahren Rohrdurchmesser zeigt, nicht jedoch in dem Klemmabschnitt 39.FIG. 6 shows that the bending template 16, shown in the drawings FIG. 6B and FIG. 6C, has a clamping jaw 25 which has a uniform design of its clamping surface, which can also be seen in perspective from FIG. 6A with the proviso that one has a diameter there is an enlarged half-shell 39 and a half-shell 40 with a smaller diameter, for example with the tube end 26 widened in diameter with the adjoining one Pinch part of the tube with the usual diameter. The counter clamping jaw 19 corresponding to FIG. 6A thus shows a design in which the pipe section to be clamped is completely grasped over the angular amount of 180 ° over the length of the pipe section to be clamped in, while the clamping jaw 25 arranged on the bending template 16 likewise has a full surface after the training in FIG. 6C 6 shows a pinch extending over an angular amount of 180 °, but FIG.

Figur 7 zeigt den Gegenklemmbacken 19 mit der Maßgabe, daß an einer Einspannfläche ebenfalls mehrere, im vorliegenden Fall zwei Klemmflächen vorhanden sind. Diese sind jedoch bezogen auf ihre Halbschale, einzeln vollflächig ausgebildet, damit sie nach der Erfindung mit einer Gegenklemmfläche zusammenwirken, die bezüglich der Länge der Gegenklemmfläche das Rohr nicht vollflächig, d.h. über einen Betrag von 180° erfaßt, wie das beispielsweise aus dem Knotenpunkt der Zeichnung in Figur 4 ersichtlich ist. Um die eine Klemmfläche 30 oder die andere Klemmfläche 31 mit den unterschiedlichen Radien 40 und 39 zur Wirkung zu bringen, ist der Gegenklemmbacken 19 in angegebener Doppelpfeilrichtung 41 verschiebbar gelagert.FIG. 7 shows the counter clamping jaws 19 with the proviso that a plurality of clamping surfaces, in the present case two clamping surfaces, are also present on a clamping surface. However, in relation to their half-shell, these are individually designed over their entire surface so that, according to the invention, they interact with a counter-clamping surface that does not cover the entire surface of the tube, i.e. with respect to the length of the counter-clamping surface. over an amount of 180 °, as can be seen, for example, from the node of the drawing in FIG. In order to bring one clamping surface 30 or the other clamping surface 31 with the different radii 40 and 39 into effect, the counter-clamping jaws 19 is slidably mounted in the indicated double arrow direction 41.

Claims (1)

Verfahren zum Betrieb einer Rohrbiegemaschine, die aufweist:

   einen um eine Achse schwenkbaren Biegetisch (21), der eine Biegeschablone (16) mit einer Spannbacke aufweist, und

   einen verschiebbaren Vorschubwagen (10), der eine drehbare Spannhülse (14) aufweist,

   wobei die Biegeschablone (16) und die Spannbacke jeweils einander zugeordnete Klemmkörper (19,25) mit Klemmflächen (29-32;33-35) aufweisen, die zu biegenden Rohrabschnitten angepaßt sind,

bei welchem das zu biegende Rohr (15) zwischen Klemmflächen der Biegeschablone (16) und der Spannbacke eingeklemmt und unter Drehung des Biegetisches (21) gebogen wird, und bei welchem das Rohr nach dem Biegen aus der Klemmfläche (33-35) der Biegeschablone (16) entfernt wird,

dadurch gekennzeichnet,

daß das Entfernen des Rohres (15) von der Klemmfläche (33-35) der Biegeschablone (16) dadurch erfolgt, daß die Biegeschablone (16) mit dem zugehörigen Klemmkörper (25) weitergedreht wird, während das Rohr (15) von dem Vorschubwagen (10) festgehalten wird.Method for operating a pipe bending machine, which comprises:

a bending table (21) which can be pivoted about an axis and has a bending template (16) with a clamping jaw, and

a displaceable feed carriage (10) which has a rotatable clamping sleeve (14),

wherein the bending template (16) and the clamping jaw each have associated clamping bodies (19, 25) with clamping surfaces (29-32; 33-35) which are adapted to bent pipe sections,

in which the tube (15) to be bent is clamped between the clamping surfaces of the bending template (16) and the clamping jaw and bent with the rotation of the bending table (21), and in which the tube after bending out of the clamping surface (33-35) of the bending template ( 16) is removed

characterized,

that the tube (15) is removed from the clamping surface (33-35) of the bending template (16) by rotating the bending template (16) with the associated clamping body (25) while the tube (15) is removed from the feed carriage ( 10) is recorded.
EP92113248A 1986-05-14 1987-03-24 Method of using a tube bending machine Expired - Lifetime EP0513864B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19863616302 DE3616302A1 (en) 1986-05-14 1986-05-14 PIPE BENDING MACHINE
DE3616302 1986-05-14
EP87104356A EP0245623B1 (en) 1986-05-14 1987-03-24 Tube-bending machine

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP87104356.8 Division 1987-03-24

Publications (3)

Publication Number Publication Date
EP0513864A2 true EP0513864A2 (en) 1992-11-19
EP0513864A3 EP0513864A3 (en) 1993-01-13
EP0513864B1 EP0513864B1 (en) 1996-07-24

Family

ID=6300854

Family Applications (2)

Application Number Title Priority Date Filing Date
EP87104356A Expired - Lifetime EP0245623B1 (en) 1986-05-14 1987-03-24 Tube-bending machine
EP92113248A Expired - Lifetime EP0513864B1 (en) 1986-05-14 1987-03-24 Method of using a tube bending machine

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP87104356A Expired - Lifetime EP0245623B1 (en) 1986-05-14 1987-03-24 Tube-bending machine

Country Status (4)

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US (1) US4888971A (en)
EP (2) EP0245623B1 (en)
CA (1) CA1294196C (en)
DE (3) DE3616302A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10150154B2 (en) 2013-11-14 2018-12-11 Robert Kyle Hughes, JR. Tube bending machine with reversible clamp assembly

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2624038A1 (en) * 1987-12-02 1989-06-09 Snecma PIPE BENDING TOOL AND METHOD FOR MANUFACTURING A WELDED TIP PIPE
DE3835173A1 (en) * 1988-10-15 1990-04-19 Pulzer Guenther F METHOD AND DEVICE FOR BENDING ROD-SHAPED WORKPIECES
US5353622A (en) * 1993-11-10 1994-10-11 Theener Ronald E Articulated three point pipe bending apparatus
DE19530805A1 (en) * 1995-08-22 1997-02-27 Schwarze Rigobert CNC controlled pipe bending machine
US5784913A (en) * 1995-10-06 1998-07-28 Pines Manufacturing Pressure die assist boost system for tube bending machine
US5918496A (en) * 1997-11-13 1999-07-06 Eagle Precision Technologies, Inc. Adjustable clamp die for tube bending machine
FR2774317B1 (en) * 1998-01-30 2000-04-07 Silfax TUBE BENDING MACHINE AND ITS BARREL DEVICE
US6038903A (en) * 1998-03-09 2000-03-21 Eaton Leonard, Inc. Dual headed bending machine
US7076982B2 (en) * 2004-01-09 2006-07-18 Jeffrey & Connie Coop, Llc Concentric bore bend die and clamp insert assembly
FR2892648B1 (en) * 2005-10-28 2007-12-14 Numalliance Soc Par Actions Si MACHINE FOR CAMBING, CHEESE, FOLDING OR BENDING BARS, WIRES OR PROFILES
DE102005058168B4 (en) * 2005-12-05 2009-08-06 Benteler Automobiltechnik Gmbh Slide rail for a bending machine
US7254972B1 (en) * 2006-06-28 2007-08-14 Chia Sheng Machinery Co., Ltd. Moving mold mechanism of a pipe bending machine
CN104148463A (en) * 2014-07-04 2014-11-19 珠海格力电器股份有限公司 Air conditioner, air conditioner pipeline piece and air conditioner pipeline piece bending method
US10076376B2 (en) 2015-05-27 2018-09-18 Medos International Sàrl Devices and methods for bending or cutting implants
US10070909B2 (en) 2015-05-27 2018-09-11 Medos International Sàrl Devices and methods for bending or cutting implants
ITUA20161931A1 (en) * 2016-03-23 2017-09-23 Crippa Spa Device for the bending of a filiform material
US10194957B2 (en) 2016-05-13 2019-02-05 Medos International Sarl Devices and methods for bending or cutting implants
CN109604397A (en) * 2018-12-07 2019-04-12 中国航发南方工业有限公司 Bending machine
CN110421030A (en) * 2019-08-27 2019-11-08 武义义蓝日用金属制品有限公司 A kind of rolling circle equipment for ship steel bending
CN114406385A (en) * 2022-03-01 2022-04-29 江苏斯普锐特智能装备有限公司 Spark machine anchor clamps and spark machine that has it

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3394571A (en) * 1966-04-14 1968-07-30 William C. Rose Conduit-bending machines
DE1297064B (en) * 1964-08-05 1969-06-12 Hilgers Maschinen U App Bauans Fully automatic pipe bending machine for bending pipes, in which bends lying on different levels close together
US4038853A (en) * 1976-06-11 1977-08-02 Rigobert Schwarze Tube bending machine
GB2082949A (en) * 1980-09-04 1982-03-17 Schwarze Rigobert Pipe bending machine
DE3033950A1 (en) * 1980-09-10 1982-05-13 Thomas Peter Dipl.-Wirtsch.-Ing. 6120 Michelstadt Lang Bending press for pipes - has bending tool with staggered circumferential grooves, and pipe clamp locked relative to grooves

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2306221A (en) * 1940-01-16 1942-12-22 Parker Pipe bending machine
FR1602951A (en) * 1968-04-09 1971-03-01 Tube bending apparatus
DE2711340C3 (en) * 1977-03-16 1986-11-13 Lang, Thomas Peter, Dipl.-Wirtsch.-Ing., 6120 Michelstadt Device for cold bending of extruded material
US4495788A (en) * 1982-08-02 1985-01-29 Eaton-Leonard Corporation Multiple curvature bender
DE3407499A1 (en) * 1983-03-26 1984-09-27 Rigobert Dipl.-Ing. 5000 Köln Schwarze Tube bending machine
JPS59178131A (en) * 1983-03-28 1984-10-09 Suzuki Motor Co Ltd Bender
DE3516923A1 (en) * 1985-05-10 1986-11-13 Rigobert Dipl.-Ing. 5000 Köln Schwarze PIPE BENDING MACHINE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1297064B (en) * 1964-08-05 1969-06-12 Hilgers Maschinen U App Bauans Fully automatic pipe bending machine for bending pipes, in which bends lying on different levels close together
US3394571A (en) * 1966-04-14 1968-07-30 William C. Rose Conduit-bending machines
US4038853A (en) * 1976-06-11 1977-08-02 Rigobert Schwarze Tube bending machine
GB2082949A (en) * 1980-09-04 1982-03-17 Schwarze Rigobert Pipe bending machine
DE3033950A1 (en) * 1980-09-10 1982-05-13 Thomas Peter Dipl.-Wirtsch.-Ing. 6120 Michelstadt Lang Bending press for pipes - has bending tool with staggered circumferential grooves, and pipe clamp locked relative to grooves

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10150154B2 (en) 2013-11-14 2018-12-11 Robert Kyle Hughes, JR. Tube bending machine with reversible clamp assembly

Also Published As

Publication number Publication date
DE3751861D1 (en) 1996-08-29
EP0513864A3 (en) 1993-01-13
CA1294196C (en) 1992-01-14
EP0513864B1 (en) 1996-07-24
DE3787754D1 (en) 1993-11-18
EP0245623B1 (en) 1993-10-13
US4888971A (en) 1989-12-26
DE3616302A1 (en) 1987-11-19
EP0245623A3 (en) 1990-03-28
EP0245623A2 (en) 1987-11-19

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