EP0200979B1 - Tube bending machine - Google Patents

Tube bending machine Download PDF

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Publication number
EP0200979B1
EP0200979B1 EP86105500A EP86105500A EP0200979B1 EP 0200979 B1 EP0200979 B1 EP 0200979B1 EP 86105500 A EP86105500 A EP 86105500A EP 86105500 A EP86105500 A EP 86105500A EP 0200979 B1 EP0200979 B1 EP 0200979B1
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EP
European Patent Office
Prior art keywords
clamping
bending
template
bending template
cheek
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EP86105500A
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German (de)
French (fr)
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EP0200979A3 (en
EP0200979A2 (en
Inventor
Rigobert Dipl.-Ing. Schwarze
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Individual
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Individual
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00Bending rods, profiles, or tubes
    • B21D7/02Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/024Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00Bending rods, profiles, or tubes
    • B21D7/02Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/021Construction of forming members having more than one groove

Definitions

  • the invention relates to a pipe bending machine with the features of the preamble of claim 1.
  • a pipe bending machine of this type is known from EP-A-0 120 336.
  • a contact surface for exchangeably accommodating a clamping body provided with the clamping surface is provided on the bending template and the clamping jaw and each clamping body arranged on a guide and with a Hydraulic drive is provided, which moves the clamping body with a vertical movement along the contact surface so that one or the other clamping surface of the plurality of different clamping surfaces of the clamping body arranged one above the other gets into the plane of the groove of the bending template.
  • the present invention is based on the task of arranging and moving the clamping bodies on the bending template and on the clamping jaw in such a way that their rapid change is possible and the clamping surfaces which are not in operation when the tube is inserted into the tube bending machine or during bending are not to disturb.
  • the proposal to arrange the cylinder space for the drive of the clamping body of the bending template within the bending template and to arrange the cylinder space for the clamping body of the clamping jaw within the clamping jaw means that the hydraulic drive protrudes only a small amount above the top of the bending template or clamping jaw and therefore no or only insignificant hindrance can occur when inserting the tube or when bending.
  • the clamping bodies are connected to the associated piston rod via a cantilever.
  • a preferred exemplary embodiment of the invention provides that the overall height of the bending template and / or the clamping jaw is used to accommodate or partially accommodate the hydraulic cylinder.
  • the clamping jaw can be rotated in a manner known per se about a horizontal axis and has two flat surfaces which are adjacent to one another, preferably at a right angle, and on one of the two surfaces or on both surfaces the clamping body provided with several different clamping surfaces is slidably mounted. This measure makes it possible in a simple manner to arrange clamping surfaces of different designs in a comparatively narrow space and to bring them into effect quickly.
  • Another proposal is that there are three different clamping surfaces on top of one another on the clamping body arranged on the bending template and two different clamping surfaces arranged one behind the other and one above the other in the working position on the clamping jaw assigned to the clamping jaw.
  • FIG. 1 shows a conventional pipe bending machine with a feed carriage 10, which can slide back and forth on one or more guide rails 11 on the upper side of the machine housing 12.
  • 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 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, the pipe section 15 is given 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 which 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.
  • FIG. 2 thus shows a tube in which there are partially straight intermediate lengths between bends and partially straight intermediate lengths between bends do not exist.
  • This tube shown in Figure 2 can be bent with a single relaxation on the tube bending machine. Such a machine is shown as an example in FIG. 3.
  • FIG. 3 shows that the cylinder space or cylinder 25 of the hydraulic drive, which has a piston 26 with a piston rod 27, is arranged within the bending template.
  • a right-angled outrigger 28 At the upper end of the piston rod there is a right-angled outrigger 28, on which a clamping element 30 is arranged via a fastening element 29, which has differently designed clamping surfaces 31 and 32 at two different heights.
  • the bending template has the bending groove 33.
  • the opposing clamping jaw 19 also has a cylinder 25a with a piston and piston rod of the design described above, so that the clamping body 30a with the associated clamping surfaces 31a and 32a arranged one above the other can be used in different operating positions.
  • the clamping jaw 19 can additionally be rotated about the horizontal axis 34, specifically via a hydraulic motor 35 which is provided with an extension arm 36 which is articulated on a rod 37 which is fastened to the axis 38 of the clamping jaw 19 .
  • the clamping jaw has two flat contact surfaces 39 and 40 adjoining at a right angle, the clamping body 30a with the different clamping surfaces 31a and 32a being slidably mounted on the contact surface 40, while a fixed clamping body 41 is arranged on the contact surface 39.
  • FIGS. 4 to 8 show different positions of the clamping body 30 relative to the opposite clamping body 30a or depending on the rotation of the clamping jaw relative to the opposite individual clamping body 41.
  • Figure 8 shows that a clamping body 30 is arranged on the bending template 16, which has three clamping surfaces arranged one above the other of different dimensions or design.
  • Clamping bodies 30a and 41a are present on the clamping jaw 19, which can be moved on the associated contact surfaces by means of a hydraulic drive and each have two different clamping surfaces.

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

Description

Die Erfindung betrifft eine Rohrbiegemaschine mit den Merkmalen des Oberbegriffes des Anspruches 1. Eine Rohrbiegemaschine dieser Gattung ist aus der EP-A-0 120 336 bekannt.The invention relates to a pipe bending machine with the features of the preamble of claim 1. A pipe bending machine of this type is known from EP-A-0 120 336.

Beim Biegen von Rohren, bei denen sich ohne gerade Zwischenlängen ein gebogener Abschnitt an den nächsten gebogenen Abschnitt anfügt oder bei Rohren, die an ihrem Kopfende eine andere Ausbildung haben als über ihre Länge, so beispielsweise durch eine Aufweitung oder einen vor dem Biegen abgeschweißten Flansch, ist ein Wechsel der Klemmflächen an der Biegeschabtone und auch an der Spannback notwendig. Es sind viele Vorschläge unterbreitet worden, diesen Wechsel der Klemmflächen vorzunehmen.When bending pipes in which a curved section joins the next bent section without straight intermediate lengths or in pipes which have a design at their head end that is different from their length, for example by an expansion or a flange welded before bending, it is necessary to change the clamping surfaces on the bending scrapers and also on the clamping jaw. Many suggestions have been made to make this change of the clamping surfaces.

In der DE-A-2 626 202 des Anmelders ist vorgeschlagen worden, die Spannbacke um eine horizontale Achse drehbar anzuordnen, damit an deren Umfang angeordnete Klemmflächen unterschiedlicher Ausbildung zur Wirkung kommen können.In DE-A-2 626 202 of the applicant it has been proposed to arrange the clamping jaw so as to be rotatable about a horizontal axis, so that clamping surfaces of different designs arranged on its circumference can come into effect.

In der EP-A-0 120 336 des Anmelders ist vorgeschlagen worden, daß jeweils an der Biegeschablone und der Spannbacke eine Anlagefläche, insbesondere Ausnehmung, zur auswechselbaren Aufnahme eines mit der Klemmfläche versehenen Klemmkörpers vorhanden ist und jeder Klemmkörper an einer Führung angeordnet und mit einem hydraulischen Antrieb versehen ist, der den Klemmkörper mit einer Vertikalbewegung entlang der Anlagefläche so bewegt, daß von den mehreren übereinander angeordneten unterschiedlichen Klemmflächen des Klemmkörpers die eine oder andere Klemmfläche in die Ebene der Rille der Biegeschablone gelangt.In EP-A-0 120 336 of the applicant it has been proposed that a contact surface, in particular a recess, for exchangeably accommodating a clamping body provided with the clamping surface is provided on the bending template and the clamping jaw and each clamping body arranged on a guide and with a Hydraulic drive is provided, which moves the clamping body with a vertical movement along the contact surface so that one or the other clamping surface of the plurality of different clamping surfaces of the clamping body arranged one above the other gets into the plane of the groove of the bending template.

Die vorliegende Erfindung geht von der Aufgabe aus, die Klemmkörper an der Biegeschablone und an der Spannbacke in der Weise anzuordnen und zu bewegen, daß deren schneller Wechsel möglich und die nicht in Tätigkeit befindlichen Klemmflächen beim Einlegen des Rohres in die Rohrbiegemaschine oder während des Biegens nicht stören.The present invention is based on the task of arranging and moving the clamping bodies on the bending template and on the clamping jaw in such a way that their rapid change is possible and the clamping surfaces which are not in operation when the tube is inserted into the tube bending machine or during bending are not to disturb.

Zur Lösung dieser Aufgabe wird bei einer Rohrbiegemaschine mit den Merkmalen nach dem Oberbegriff des Anspruches 1 vorgeschlagen, daß der hydraulische Zylinder des Klemmkörper-Antriebes in der Biegeschablone oder in der Spannbacke angeordnet ist.To solve this problem, it is proposed in a pipe bending machine with the features according to the preamble of claim 1 that the hydraulic cylinder of the clamping body drive is arranged in the bending template or in the clamping jaw.

Durch den Vorschlag, innerhalb der Biegeschablone den Zylinderraum für den Antrieb des Klemmkörpers der Biegeschablone anzuordnen und innerhalb der Spannbacke den Zylinderraum für den Klemmkörper der Spannbacke anzuordnen, wird erreicht, daß der hydraulische Antrieb nur um ein geringes Maß über die Oberseite der Biegeschablone oder Spannbacke vorsteht und daher beim Einlegen des Rohres oder beim Biegen keine oder nur unwesentliche Behinderung erfolgen kann. Bei dieser Lösung sind die Klemmkörper über einen Ausleger mit der zugeordneten Kolbenstange verbunden.The proposal to arrange the cylinder space for the drive of the clamping body of the bending template within the bending template and to arrange the cylinder space for the clamping body of the clamping jaw within the clamping jaw means that the hydraulic drive protrudes only a small amount above the top of the bending template or clamping jaw and therefore no or only insignificant hindrance can occur when inserting the tube or when bending. In this solution, the clamping bodies are connected to the associated piston rod via a cantilever.

Sofern die Biegeschablone vergleichsweise flach ist, dann kann ein Teil des Zylinders über die Oberseite hinaus nach oben ragen. Es ist auch möglich, daß ein Teil des Zylinders nach unten über die Unterseite der Biegeschablone in den Biegetisch hineinragt. Jedenfalls sieht ein bevorzugtes Ansführungsbeispiel der Erfindung vor, daß die Bauhöhe der Biegeschablone und /oder der Spannbacke zur Unterbringung oder teilweisen Unterbringung des Hydraulik-Zylinders genutzt wird.If the bending template is comparatively flat, then part of the cylinder can protrude above the top. It is also possible for a part of the cylinder to protrude downward over the underside of the bending template into the bending table. In any case, a preferred exemplary embodiment of the invention provides that the overall height of the bending template and / or the clamping jaw is used to accommodate or partially accommodate the hydraulic cylinder.

In weiterer Ausgestaltung wird vorgeschlagen, daß die Spannbacke in an sich bekannter Weise um eine horizontale Achse drehbar ist und zwei einander, vorzugsweise in einem rechten Winkel angrenzende ebene Flächen hat und an einer der beiden Flächen oder an beiden Flächen der mit mehreren unterschiedlichen Klemmflächen versehene Klemmkörper verschiebbar gelagert ist. Durch diese Maßnahme ergibt sich auf einfache Weise die Möglichkeit, auf vergleichsweise engem Raum Klemmflächen unterschiedlicher Ausbildung anzuordnen und schnell zur Wirkung zu bringen.In a further embodiment it is proposed that the clamping jaw can be rotated in a manner known per se about a horizontal axis and has two flat surfaces which are adjacent to one another, preferably at a right angle, and on one of the two surfaces or on both surfaces the clamping body provided with several different clamping surfaces is slidably mounted. This measure makes it possible in a simple manner to arrange clamping surfaces of different designs in a comparatively narrow space and to bring them into effect quickly.

Ein weiterer Vorschlag geht dahin, daß an dem der Biegeschablone angeordneten Klemmkörper übereinander drei unterschiedliche Klemmflächen und an dem der Spannbacke zugeordneten Klemmbacke zwei hintereinander und in der Arbeitsstellung übereinander angeordnete unterschiedliche Klemmflächen vorhanden sind.Another proposal is that there are three different clamping surfaces on top of one another on the clamping body arranged on the bending template and two different clamping surfaces arranged one behind the other and one above the other in the working position on the clamping jaw assigned to the clamping jaw.

Die Erfindung ist in der Zeichnung beispielhaft dargestellt.The invention is illustrated by way of example in the drawing.

Es zeigen:

  • Figur 1 eine herkömmliche Rohrbiegemaschine in perspektivischer Darstellung,
  • Figur 2 ein gebogenes Rohr,
  • Figur 3 in teilweise vertikalem Schnitt den Biegetisch mit Biegeschablone und Spannbacke,
  • Figur 4 bis 7 unterschiedlich zueinander angeordnete Klemmflächen,
  • Figur 8 eine abgewandelte Ausbildung der Klemmkörper.
Show it:
  • FIG. 1 shows a conventional pipe bending machine in perspective,
  • FIG. 2 shows a bent tube,
  • FIG. 3 shows the bending table with a bending template and clamping jaw in a partially vertical section,
  • 4 to 7 differently arranged clamping surfaces,
  • Figure 8 shows a modified design of the clamping body.

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.FIG. 1 shows a conventional pipe bending machine with a feed carriage 10, which can slide back and forth on one or more guide rails 11 on the upper side of the machine housing 12.

Der Vorschubwagen 10 hat einen Hohlzylinder 13, in dessen Inneren 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, welche ebenfalls eine dem Rohrhalbmesser entsprechende Rille als Spannfläche hat und das Rohr 15 an der Biegeschablone 16 festklemmt. 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 Biegeschablone 16 freie Rohrstück 15 seitlich nicht abknicken 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 section 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. There is a hydraulic cylinder 20 at shown in a playful manner, which moves the clamping device 18 of the clamping jaw 19 towards the bending template 16 for clamping the tube 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, the pipe section 15 is given 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 which is free between the clamping sleeve 14 and the bending template 16 cannot bend laterally, a slide rail 24 is pressed onto this pipe section part, which also has a groove which 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.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.

Figur 2 zeigt somit ein Rohr, bei dem teils geradlinige Zwischenlängen zwischen Biegungen vorhanden sind und teils geradlinige Zwischenlängen zwischen Biegungen nicht vorhanden sind. Dieses in Figur 2 dargestellte Rohr kann bei einer einzigen Entspannung auf der Rohrbiegemaschine gebogen werden. Eine solche Maschine ist beispielhaft in Figur 3 dargestellt.FIG. 2 thus shows a tube in which there are partially straight intermediate lengths between bends and partially straight intermediate lengths between bends do not exist. This tube shown in Figure 2 can be bent with a single relaxation on the tube bending machine. Such a machine is shown as an example in FIG. 3.

Figur 3 zeigt, daß innerhalb der Biegeschablone der Zylinderraum bzw. eingesetzte Zylinder 25 des hydraulischen Antriebes angeordnet ist, der einen Kolben 26 mit Kolbenstange 27 aufweist. Am oberen Ende der Kolbenstange ist der rechtwinklig abgehende Ausleger 28 vorhanden, an dem über ein Befestigungselement 29 der Klemmkörper 30 angeordnet ist, der in zwei verschiedenen Höhenlagen unterschiedlich ausgebildete Klemmflächen 31 und 32 aufweist. Die Biegeschablone hat die Biegerille 33.FIG. 3 shows that the cylinder space or cylinder 25 of the hydraulic drive, which has a piston 26 with a piston rod 27, is arranged within the bending template. At the upper end of the piston rod there is a right-angled outrigger 28, on which a clamping element 30 is arranged via a fastening element 29, which has differently designed clamping surfaces 31 and 32 at two different heights. The bending template has the bending groove 33.

Auch die gegenüberliegende Spannbacke 19 hat einen Zylinder 25a mit Kolben und Kolbenstange der vorbeschriebenen Ausbildung, damit der Klemmkörper 30a mit den zugeordneten übereinander angeordneten Klemmflächen 31a und 32a in unterschiedlichen Betriebsstellungen Anwendung finden kann.The opposing clamping jaw 19 also has a cylinder 25a with a piston and piston rod of the design described above, so that the clamping body 30a with the associated clamping surfaces 31a and 32a arranged one above the other can be used in different operating positions.

Nach Figur 3 ist die Spannbacke 19 zusätzlich um die horizontale Achse 34 drehbar, und zwar über einen Hydro-Motor 35, der mit einem Ausleger 36 versehen ist, der an eine Stange 37 angelenkt ist, die an der Achse 38 der Spannbacke 19 befestigt ist. Die Spannbacke hat zwei in einem rechten Winkel angrenzende ebene Anlageflächen 39 und 40, wobei an der Anlagefläche 40 der Klemmkörper 30a mit den unterschiedlichen Klemmflächen 31a und 32a verschiebbar gelagert ist, während an der Anlagefläche 39 ein ortsfester Klemmkörper 41 angeordnet ist.According to FIG. 3, the clamping jaw 19 can additionally be rotated about the horizontal axis 34, specifically via a hydraulic motor 35 which is provided with an extension arm 36 which is articulated on a rod 37 which is fastened to the axis 38 of the clamping jaw 19 . The clamping jaw has two flat contact surfaces 39 and 40 adjoining at a right angle, the clamping body 30a with the different clamping surfaces 31a and 32a being slidably mounted on the contact surface 40, while a fixed clamping body 41 is arranged on the contact surface 39.

Die Figuren 4 bis 8 zeigen unterschiedliche Stellungen des Klemmkörpers 30 zum gegenüberliegenden Klemmkörper 30a oder abhängig von der Drehung der Spannbacke zu dem gegenüberliegenden einzelnen Klemmkörper 41.FIGS. 4 to 8 show different positions of the clamping body 30 relative to the opposite clamping body 30a or depending on the rotation of the clamping jaw relative to the opposite individual clamping body 41.

Die unterschiedlichen Arbeitsstellungen der Klemmkörper und deren Klemmflächen erfolgen durch Betätigung der hydraulischen zugeordneten Antriebe durch Ein- und Ausfahren der Kolbenstange und durch Drehung der Spannbacke um die Achse 34. Einer besonderen Erläuterung der Figuren 4 bis 7 bedarf es nicht.The different working positions of the clamping bodies and their clamping surfaces take place by actuating the hydraulically assigned drives by retracting and extending the piston rod and by rotating the clamping jaw about the axis 34. A special explanation of FIGS. 4 to 7 is not required.

Figur 8 zeigt, daß an der Biegeschablone 16 ein Klemmkörper 30 angeordnet ist, der drei übereinander angeordnete Klemmflächen unterschiedlicher Bemessung oder Ausbildung hat. An der Spannbacke 19 sind Klemmkörper 30a und 41a vorhanden, die an den zugeordneten anlageflächen über einen Hydraulik-Antrieb verschiebbar sind und jeweils zwei unterschiedliche Klemmflächen haben.Figure 8 shows that a clamping body 30 is arranged on the bending template 16, which has three clamping surfaces arranged one above the other of different dimensions or design. Clamping bodies 30a and 41a are present on the clamping jaw 19, which can be moved on the associated contact surfaces by means of a hydraulic drive and each have two different clamping surfaces.

Es sei bemerkt, daß analog zu Figur 8 nicht lediglich zwei einander angrenzende Umfangsflächen ebener Ausbildung mit Klemmkörpern versehen sein können, sondern auch drei oder mehrere einander angrenzende Flächen.It should be noted that, analogously to FIG. 8, not only two adjacent peripheral surfaces of flat design can be provided with clamping bodies, but also three or more adjacent surfaces.

Claims (3)

1. Tube bending machine comprising a bending table (21) pivotable about a vertical axis, said bending table having a bending template (16) and a clamping cheek (19) displaceable with regard to said bending template, and comprising a displaceable feed carriage (10) provided with a rotatable tightening sleeve (14), said bending template (16) and said clamping cheek (19) being provided with clamping surfaces (31, 32; 31a, 32a) which are adapted to linear and curved sections of the tube to be bent and are assigned to each other, respectively, said clamping surfaces being spaced from each other and adapted to be brought into an operating position, an abutting surface (40), preferably a recess, being arranged on the bending template (16) and said clamping cheek (19), respectively, for exchangeably receiving a clamping body (30, 30a) having the clamping surface (31, 32; 31a, 32a), and each clamping body (30, 30a) being arranged at a guiding means and being provided with a hydraulic drive (25-29) for moving the clamping body (30, 30a) vertically along the abutting surface (40) such that, of the plurality of the clamping surfaces (31, 32; 31a, 32a) of the clamping body (30, 30a), arranged on top of each other, the one or the other clamping surface (31, 32; 31a, 32a) reaches the plane of the groove (17, 33) of the bending template (16),
characterized in that the respective hydraulic cylinder (25, 25a) of the drive of the clamping bodies (30, 30a) is arranged in the bending template (16) and/or the clamping cheek (19).
2. Tube bending machine, particularly according to claim 1, characterized in that the clamping cheek (19), in a manner known per se, is pivotable around a horizontal axis (34) and has two plane surfaces (39, 40) abutting each other perferably at a right angle, and that either in one of said two surfaces (39, 40) or in both surfaces (39, 40), respectively, there is displaceably supported a clamping body (30a) provided with a plurality of different clamping surfaces (31 a, 32a).
3. Tube bending machine according to claims 1 and 2, characterized in that the clamping body (30) arranged at the bending template has three different clamping surfaces, and the clamping body (30a) arranged at the clamping cheek (19) has two different clamping surfaces (31 a, 32a).
EP86105500A 1985-05-10 1986-04-21 Tube bending machine Expired EP0200979B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3516923 1985-05-10
DE19853516923 DE3516923A1 (en) 1985-05-10 1985-05-10 PIPE BENDING MACHINE

Publications (3)

Publication Number Publication Date
EP0200979A2 EP0200979A2 (en) 1986-11-12
EP0200979A3 EP0200979A3 (en) 1987-01-07
EP0200979B1 true EP0200979B1 (en) 1989-11-15

Family

ID=6270419

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105500A Expired EP0200979B1 (en) 1985-05-10 1986-04-21 Tube bending machine

Country Status (3)

Country Link
US (1) US4821549A (en)
EP (1) EP0200979B1 (en)
DE (2) DE3516923A1 (en)

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US11440069B2 (en) 2013-11-15 2022-09-13 Greenlee Tools, Inc. Bender having a sensor configured to sense a workpiece

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DE3616302A1 (en) * 1986-05-14 1987-11-19 Schwarze Rigobert PIPE BENDING MACHINE
DE3835173A1 (en) * 1988-10-15 1990-04-19 Pulzer Guenther F METHOD AND DEVICE FOR BENDING ROD-SHAPED WORKPIECES
DE4442030A1 (en) * 1994-11-25 1996-05-30 Sen Bernhard Kreye Metal strip bending process for rails of doors and windows
DE19530805A1 (en) * 1995-08-22 1997-02-27 Schwarze Rigobert CNC controlled pipe bending machine
DE19630163C1 (en) * 1996-07-26 1997-12-11 Schmitz & Brill Gmbh & Co Kg Tool for clamping and bending e.g. steel tube
DE102009038384A1 (en) * 2009-08-24 2011-03-03 Tracto-Technik Gmbh & Co. Kg Device for bending elongate workpieces
CN101934314B (en) * 2010-07-19 2012-04-04 江苏合丰机械制造有限公司 Pipe bending device capable of bending left and right in pipe bending machine
CN109175036A (en) * 2018-08-28 2019-01-11 四川凯润电器有限公司 A kind of heat-exchange tube bending device

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Publication number Priority date Publication date Assignee Title
US11440069B2 (en) 2013-11-15 2022-09-13 Greenlee Tools, Inc. Bender having a sensor configured to sense a workpiece

Also Published As

Publication number Publication date
US4821549A (en) 1989-04-18
DE3516923A1 (en) 1986-11-13
EP0200979A3 (en) 1987-01-07
DE3666923D1 (en) 1989-12-21
EP0200979A2 (en) 1986-11-12

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