EP1533051B1 - Device for straightening a tube - Google Patents
Device for straightening a tube Download PDFInfo
- Publication number
- EP1533051B1 EP1533051B1 EP04024920A EP04024920A EP1533051B1 EP 1533051 B1 EP1533051 B1 EP 1533051B1 EP 04024920 A EP04024920 A EP 04024920A EP 04024920 A EP04024920 A EP 04024920A EP 1533051 B1 EP1533051 B1 EP 1533051B1
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- European Patent Office
- Prior art keywords
- straightening
- spar
- pipe
- longitudinal axis
- saddle
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- 230000001747 exhibiting effect Effects 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract description 4
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 235000003332 Ilex aquifolium Nutrition 0.000 description 1
- 241000209027 Ilex aquifolium Species 0.000 description 1
- 240000005561 Musa balbisiana Species 0.000 description 1
- 235000018290 Musa x paradisiaca Nutrition 0.000 description 1
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
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- 238000000748 compression moulding Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000013000 roll bending Methods 0.000 description 1
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Classifications
-
- 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
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
Definitions
- the invention relates to a device for straightening a tube having a radially expandable expander head immersed in the tube and at least one straightening saddle which can be positioned at a desired position along the longitudinal axis of the tube and radial to a part of the wall of the tube Force to direct the pipe.
- Document JP-A 61 099 522 shows a device according to the preamble of claim 1.
- the invention is therefore based on the object, a pipe straightening device of the type mentioned in such a way that the mentioned disadvantages are overcome and thus the manufacturing process of the pipe and in particular the straightening process is improved.
- the at least one saddle saddle is formed in simultaneous cooperation with the expander head as Rohrjustiervorraum, wherein an insertable into the tube interior rod or tubular trained spar is provided, which is arranged at least one saddle adjustable along the longitudinal axis of the spar and means are provided for urging the saddle from the longitudinal axis of the support member radially outward so that the saddle presses against the inner surface of the tube.
- a first development provides means of movement with which the at least one saddle can be positioned at a predetermined position along the longitudinal axis of the spar.
- the expander head is arranged at an axial end of the spar, which has radially expandable segments relative to the longitudinal axis of the spar.
- each saddle is in contact with a wedge, is moved radially by the translational movement in the direction of the longitudinal axis of the spar of the saddle.
- a linear actuator is used for the movement of the wedge.
- Another embodiment provides measuring means with which the radial distance of the saddle from the longitudinal axis of the spar can be measured.
- At least one measuring means can be arranged on the spar, with which the distance between the longitudinal axis of the spar and the inner surface of the tube can be measured.
- a plurality of measuring means are arranged evenly distributed over the circumference of the spar.
- the at least one saddle is arranged together with means for radially moving the saddle on a support which is translationally movable relative to the spar in the direction of its longitudinal axis.
- the device according to the invention for straightening a tube advantageously ensures a relatively short force flow between the expander head and the straightening calipers, as a result of which the force to be introduced can be applied in a more accurately metered manner.
- the efficiency of the device and thus the tube manufacturing process is thereby improved.
- the pre-positioning can be provided by means of Rohrjustiervorraum at any point.
- the invention allows quasi "remote-controlled" saddle saddles, which are arranged displaceably on a support element, for pre-positioning, being used as a carrier element in particular the spar of the expander for expanding the tube used.
- the tube can be bent from the inside and thus directed with a very short power flow.
- the size and direction of the straightening moment can easily be adjusted individually for each expansion step of the tube, so that the straightening process can be carried out in an optimized manner.
- the straightening process can be partially automated. But even if no automation is provided, the straightening process can be manually corrected at least interactively.
- the proposed device is used in particular when straightening large pipes.
- a larger, thick-walled tube 2 has a distortion after welding, ie it is not ideal straight.
- the device 1 is used for straightening the tube 2.
- the device 1 has a spar 4.
- the longitudinal axis L T of the spar 4 is identical to the longitudinal axis L of the tube 2.
- the device 1 is arranged for straightening the tube 2 in the interior I of the tube 2.
- an expander head 8 is arranged, which has a plurality of segments 9 distributed over the circumference.
- the expander head 8 has a truncated pyramid 15 on which the segments 9 are arranged to be radially displaceable.
- the spar 4 still comprises a pull rod 17, these parts being arranged coaxially with each other. The spar 4 interacts axially immovably with the segments 9.
- a carrier 14 in the form of a carrier plate or the like is arranged on the spar 4.
- the carrier 14 can be positioned with moving means 6 at a desired position x of the spar 4.
- wedges 10 are arranged, which can be moved in the direction of the longitudinal axis L T of the spar 4 on the support 14 by means of linear actuators 11.
- the wedges 10 act together with a plurality of a leveling device forming straightening saddles 3, which are arranged on the wedges 10 so that when moving the wedges 10 in the direction of the longitudinal axis L T the straightening saddles 3 are moved radially outward.
- the straightening saddles 3 generate a radially outwardly directed force F on the inner surface of the tube 2.
- the current displacement of the wedges 10 relative to the spar 4 can be detected by measuring means 12.
- the value measured by the measuring means 12 can be used to determine the radial distance of the radially outer surface of the saddle member 3 from the longitudinal axis L T of the bar 4 via the conical surface of the wedge 10.
- the spar 4 or support 14 and the wedges 10 and straightening saddles 3 arranged on it together with the linear actuators 11 and the measuring means 12 represent means 5 with which the straightening saddles 3 can be pressed radially outward from the longitudinal axis L T of the spar 4 , so that the straightening saddles 3 produce the desired Vorposition réelles free by applying the forces F, ie by pressing against the pipe inner wall.
- measuring means 13 On the bar 4 measuring means 13 may further be arranged, which is the distance of the inner surface of the tube 2 from the bar 4 determine. Of these measuring means 13 may be arranged evenly distributed over the circumference several.
- Fig. 1 it is shown that the measuring means 13 is fixedly arranged on the spar 4 and measures the distance to the inner tube wall. It should be noted that the measuring means 13 can also be arranged on the support plate 14 and thus then moves along with the displacement of the support plate 14 relative to the spar 4.
- the straightening process control means (not shown) which detect the position of the inner wall of the tube 2 by the measuring means 13, namely at different axial positions of the tube 2. Furthermore, the measuring means 12 provide information This can be determined by algorithms known per se, at which axial position x of the tube 2 on which saddle saddle 3, a pressing force F must be applied in order to interact with the expander head. 8 be able to initiate such a bending moment in the tube 2 that the highest possible straightness of the tube is achieved.
- the saddle saddle 3 can be designed as plates or to compensate for longitudinal expansion of the tube 2 as a plate roller segment or as a sliding plate.
- Both the movement means 6 and the linear actuators 11 are schematically sketched in the embodiment as piston-cylinder units. It should also be noted that any movement means can be used, for example electric drives with spindle systems.
- the four straightening saddles 3 are arranged uniformly distributed over the circumference of the spar 4.
- at least one saddle 3 is required. The more straightening saddles 3 the tube adjusting device has on the spar 4, the more accurate straightening can be done.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Forging (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Richten eines Rohres, die einen in das Rohr eintauchenden, radial aufweitbaren Expanderkopf und mindestens einen Richtsattel aufweist, der an einer gewünschten Position entlang der Längsachse des Rohres positioniert werden kann und der auf einen Teil der Wandung des Rohres eine radiale Kraft ausüben kann, um das Rohr zu richten. Dokument JP-A 61 099 522 zeigt eine Vorrichtung nach dem Oberbegrift von Anspruch 1.The invention relates to a device for straightening a tube having a radially expandable expander head immersed in the tube and at least one straightening saddle which can be positioned at a desired position along the longitudinal axis of the tube and radial to a part of the wall of the tube Force to direct the pipe. Document JP-A 61 099 522 shows a device according to the preamble of
Bei der Fertigung von Rohren aus dicken Blechtafeln, die nach dem U-O-E-Verfahren, dem Formpressverfahren, dem 3 Walzenbiegeverfahren oder ähnl. zu einem runden Schlitzrohr eingeformt und dann verschweißt werden, wird das Rohrmaterial beim kontinuierlichen Längsnaht-Schweißen in aller Regel einer sehr hohen thermischen Belastung unterzogen. Beim Herstellen eines Rohres in dieser Weise entsteht folglich das Problem, dass das Rohr aufgrund des Schweißprozesses einem erheblichen Verzug unterliegt. Das Rohr ist nach dem Herstellprozess in aller Regel also ungerade (Bananenform), so dass es zur Erzielung des benötigten Geradheitsgrades gerichtet werden muss.In the manufacture of pipes made of thick metal sheets, according to the U-O-E process, the compression molding process, the 3-roll bending process or ähnl. are formed into a round slotted tube and then welded, the tube material is subjected in continuous longitudinal seam welding usually a very high thermal load. When manufacturing a pipe in this way, there is thus the problem that the pipe is subject to a considerable delay due to the welding process. The tube is after the manufacturing process usually so odd (banana shape), so it must be addressed to achieve the required degree of straightness.
Zum Richten von Rohren sind Vorrichtungen der eingangs genannten Art im Einsatz, wobei derartige Anlagen Richtsättel oder Rollen aufweisen, die von außen an das Rohr angesetzt werden und die das Rohr in radialer Richtung mit einer Kraft beaufschlagen. Dadurch wird in das Rohr ein Biegemoment eingeleitet, mit dem ergänzend zu der Einwirkung des Expanderkopfes versucht wird, die im Rohr vor handene Ungeradheit zu eliminieren. Die von außen an das Rohr angesetzten Richtsättel erfordern hierbei eine große, sperrige Umbauung zur notwendigen Kraftaufnahme.For straightening pipes devices of the type mentioned are in use, such systems have saddles or rollers, which are recognized from the outside of the pipe and act on the pipe in the radial direction with a force. As a result, a bending moment is introduced into the tube, with the addition of the action of the expander head is attempted to eliminate the pipe in front of existing oddness. The attached from the outside of the tube saddle saddles require this a large, bulky Conversion to the necessary power consumption.
Weiterhin nachteilig ist bei den vorbekannten Richtvorrichtungen für Rohre, dass der Richteffekt zumeist nur auf eine Achsrichtung, d. h. beispielsweise nur auf die vertikale Richtung, begrenzt ist. Bekannte Rohrrichtvorrichtungen weisen darüber hinaus eine relativ große Elastizität auf, was durch den relativ langen Weg bis zur Krafteinleitungsstelle bedingt ist.Another disadvantage of the known straightening devices for pipes, that the straightening effect mostly only in one axial direction, d. H. for example, only in the vertical direction, is limited. Known pipe straightening devices also have a relatively large elasticity, which is due to the relatively long way to the force introduction point.
Bei der Fertigung von Rohren mit immer größeren Wandstärken und höheren Materialfestigkeiten, wie sie mehr und mehr verlangt werden, stoßen vorbekannte Rohrrichtvorrichtungen an ihre Grenzen. Sie können nicht mehr die Anforderungen erfüllen, um einen effizienten und damit kostengünstigen Rohrherstellungsprozess zu gewährleisten.In the manufacture of pipes with increasing wall thicknesses and higher material strengths, as they are more and more demanded, previously known pipe straightening devices reach their limits. You can no longer meet the requirements to ensure an efficient and therefore cost-effective tube manufacturing process.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Rohrrichtvorrichtung der eingangs genannten Art derart weiterzuentwickeln, dass die genannten Nachteile überwunden werden und damit der Herstellprozess des Rohres und insbesondere der Richtprozess verbessert wird.The invention is therefore based on the object, a pipe straightening device of the type mentioned in such a way that the mentioned disadvantages are overcome and thus the manufacturing process of the pipe and in particular the straightening process is improved.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der mindestens eine Richtsattel im zeitgleichen Zusammenwirken mit dem Expanderkopf als Rohrjustiervorrichtung ausgebildet ist, wobei ein in das Rohrinnere einführbarer stangen- oder rohrförmig ausgebildeter Holm vorgesehen ist, der mindestens eine Richtsattel entlang der Längsachse des Holmes verschiebbar angeordnet ist und wobei Mittel vorgesehen sind, mit denen der Richtsattel von der Längsachse des Trägerelements radial nach außen gedrückt werden kann, so dass der Richtsattel auf die innere Oberfläche des Rohres drückt. Indem der Richtsattel bzw. die Richtsättel bei dicken Rohrwänden als Rohrjustierungsvorrichtung zeitgleich mit dem Expandieren angedrückt werden, läßt sich eine effektive Vorpositionierung erreichen und im Zusammenspiel mit dem Expanderkopf der von diesem bewirkte mehrachsige Spannungszustand mit einem Fließen des Rohrmaterials dazu ausnutzen, das Rohr gerade zu biegen. Es ist ein Kraftfluß auf engstem Raum ohne Umlenkung möglich. Die innnenliegend vorgesehenen Richtsättel erfordern zudem keinen weiteren Aufwand, weil eine Umbauung zur Kraftaufnahme entbehrlich ist.This object is achieved in that the at least one saddle saddle is formed in simultaneous cooperation with the expander head as Rohrjustiervorrichtung, wherein an insertable into the tube interior rod or tubular trained spar is provided, which is arranged at least one saddle adjustable along the longitudinal axis of the spar and means are provided for urging the saddle from the longitudinal axis of the support member radially outward so that the saddle presses against the inner surface of the tube. By pressing the saddle or the saddle saddle at the same time as the tube adjustment device at the same time as expanding, an effective pre-positioning can be achieved and in cooperation with the expander head of the multi-axis caused by this Use the stress state with a flow of the tube material to bend the tube straight. It is a power flow in tight spaces without redirection possible. The innnenliegend provided saddles also require no further effort, because a conversion to the power is unnecessary.
Eine erste Weiterbildung sieht Bewegungsmittel vor, mit denen der mindestens eine Richtsattel an einer vorgegebenen Position entlang der Längsachse des Holmes positioniert werden kann.A first development provides means of movement with which the at least one saddle can be positioned at a predetermined position along the longitudinal axis of the spar.
Bevorzugt ist an einem axialen Ende des Holmes der Expanderkopf angeordnet, der relativ zur Längsachse des Holmes radial aufweitbare Segmente aufweist.Preferably, the expander head is arranged at an axial end of the spar, which has radially expandable segments relative to the longitudinal axis of the spar.
Für die Bewegung der Richtsättel in Radialrichtung ist vorteilhaft vorgesehen, dass jeder Richtsattel mit einem Keil in Verbindung steht, durch dessen translatorische Bewegung in Richtung der Längsachse des Holmes der Richtsattel radial bewegt wird. Für die Bewegung des Keils kommt insbesondere ein Linearaktuator zum Einsatz.For the movement of the saddle straightening in the radial direction is advantageously provided that each saddle is in contact with a wedge, is moved radially by the translational movement in the direction of the longitudinal axis of the spar of the saddle. In particular, a linear actuator is used for the movement of the wedge.
Mit Vorteil sind über den Umfang des Holmes mehrere, vorzugsweise vier, Richtsättel gleichmäßig verteilt angeordnet.Advantageously, several, preferably four, saddle straps are evenly distributed over the circumference of the spar.
Eine weitere Ausgestaltung sieht Messmittel vor, mit denen der radiale Abstand des Richtsattels von der Längsachse des Holmes gemessen werden kann.Another embodiment provides measuring means with which the radial distance of the saddle from the longitudinal axis of the spar can be measured.
Weiterhin kann am Holm mindestens ein Messmittel angeordnet sein, mit dem der Abstand zwischen der Längsachse des Holmes und der inneren Oberfläche des Rohres gemessen werden kann. Bevorzugt sind dabei mehrere Messmittel gleichmäßig verteilt über den Umfang des Holmes angeordnet.Furthermore, at least one measuring means can be arranged on the spar, with which the distance between the longitudinal axis of the spar and the inner surface of the tube can be measured. Preferably, a plurality of measuring means are arranged evenly distributed over the circumference of the spar.
Schließlich kann vorgesehen werden, dass der mindestens eine Richtsattel samt Mittel zum radialen Bewegen des Richtsattels auf einem Träger angeordnet ist, der translatorisch relativ zum Holm in Richtung dessen Längsachse beweglich ist.Finally, it can be provided that the at least one saddle is arranged together with means for radially moving the saddle on a support which is translationally movable relative to the spar in the direction of its longitudinal axis.
Die erfindungsgemäße Vorrichtung zum Richten eines Rohres stellt in vorteilhafter Weise einen relativ kurzen Kraftfluss zwischen dem Expanderkopf und den Richtsätteln sicher, wodurch die einzuleitende Kraft genauer dosiert aufgebracht werden kann. Die Effizienz der Vorrichtung und damit des Rohrherstellprozesses wird dadurch verbessert. Weiterhin kann die Vorpositionierung mittels der Rohrjustiervorrichtung an beliebiger Stelle vorgesehen werden.The device according to the invention for straightening a tube advantageously ensures a relatively short force flow between the expander head and the straightening calipers, as a result of which the force to be introduced can be applied in a more accurately metered manner. The efficiency of the device and thus the tube manufacturing process is thereby improved. Furthermore, the pre-positioning can be provided by means of Rohrjustiervorrichtung at any point.
Die Erfindung ermöglicht quasi "ferngesteuerte" Richtsättel, die auf einem Trägerelement verschiebbar angeordnet sind, zur Vorpositionierung, wobei als Trägerelement insbesondere der Holm des Expanders zum Aufweiten des Rohres zum Einsatz kommt. Hierdurch kann das Rohr bei sehr kurzem Kraftfluss von innen gebogen und damit gerichtet werden.The invention allows quasi "remote-controlled" saddle saddles, which are arranged displaceably on a support element, for pre-positioning, being used as a carrier element in particular the spar of the expander for expanding the tube used. As a result, the tube can be bent from the inside and thus directed with a very short power flow.
Die Größe und Richtung des Richtmomentes ist problemlos für jeden Expansionsschritt des Rohres individuell einstellbar, so dass der Richtprozess optimiert durchgeführt werden kann.The size and direction of the straightening moment can easily be adjusted individually for each expansion step of the tube, so that the straightening process can be carried out in an optimized manner.
Werden die maßgeblichen Rohrdaten beim Einsatz der vorgeschlagenen Rohrrichtvorrichtung durch entsprechende Messmittel erfasst, lässt sich der Richtprozess teilweise automatisieren. Aber auch wenn keine Automatisierung vorgesehen wird, kann der Richtprozess zumindest interaktiv manuell korrigiert werden.If the relevant pipe data are detected by appropriate measuring means when using the proposed pipe straightening device, the straightening process can be partially automated. But even if no automation is provided, the straightening process can be manually corrected at least interactively.
Die vorgeschlagene Vorrichtung kommt insbesondere beim Richten von Großrohren zum Einsatz.The proposed device is used in particular when straightening large pipes.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:
- Fig. 1
- den Schnitt durch ein Rohr mit in diesem angeordneter Rohrrichtvorrichtung samt Expanderkopf und
- Fig. 2
- den Schnitt A-B gemäß Fig. 1.
- Fig. 1
- the section through a pipe with arranged in this pipe straightening device together with expander head and
- Fig. 2
- the section AB of FIG. 1.
Ein größeres, dickwandiges Rohr 2 weist nach dem Verschweißen einen Verzug auf, d. h. es ist nicht ideal gerade. Um diese Ungeradheit zu eliminieren, wird die Vorrichtung 1 zum Richten des Rohres 2 eingesetzt. Die Vorrichtung 1 weist einen Holm 4 auf. Die Längsachse LT des Holmes 4 ist identisch mit der Längsachse L des Rohres 2. Die Vorrichtung 1 ist zum Richten des Rohres 2 im Inneren I des Rohres 2 angeordnet.A larger, thick-walled tube 2 has a distortion after welding, ie it is not ideal straight. To eliminate this imprecision, the
An einem axialen Ende 7 des Holmes 4 ist ein Expanderkopf 8 angeordnet, der mehrere über den Umfang verteilt angeordnete Segmente 9 aufweist. In Fig. 1 ist das senkrecht nach oben sowie das senkrecht nach unten ausgerichtete Segment 9 zu sehen. Der Expanderkopf 8 weist einen Pyramidenstumpf 15 auf, auf dem die Segmente 9 radial verschiebbar angeordnet sind. Der Holm 4 umfaßt noch eine Zugstange 17, wobei diese Teile koaxial zueinander angeordnet sind. Der Holm 4 wirkt axial unverschieblich mit den Segmenten 9 zusammen. Dadurch ist es möglich, bei einer relativen axialen Verschiebung der Zugstange 17 in Richtung der Längsachse LT des Holmes 4 mittels des Pyramidenstumpfes 15 die Segmente 9 radial von der Längsachse LT weg zu bewegen und damit ihr radial außenliegendes Ende gegen die innere Rohrwand zu pressen.At an
Auf dem Holm 4 ist ein Träger 14 in Form einer Trägerplatte oder dergleichen angeordnet. Der Träger 14 kann dabei mit Bewegungsmittel 6 an einer gewünschten Position x des Holmes 4 positioniert werden.On the spar 4, a
Auf dem Träger 14 sind Keile 10 angeordnet, die in Richtung der Längsachse LT des Holmes 4 auf dem Träger 14 mittels Linearaktuatoren 11 verschoben werden können. Die Keile 10 wirken dabei mit mehreren eine Rohrjustiervorrichtung bildenden Richtsätteln 3 zusammen, die auf den Keilen 10 so angeordnet sind, dass bei der Verschiebung der Keile 10 in Richtung der Längsachse LT die Richtsättel 3 radial nach außen bewegt werden. Dadurch erzeugen die Richtsättel 3 eine radial nach außen gerichtete Kraft F auf die innere Oberfläche des Rohres 2.On the
Wie in Fig. 2 gesehen werden kann, besteht im Ausführungsbeispiel die Rohrjustiervorrichtung aus vier Richtsätteln 3, die gleichmäßig über den Umfang des Holmes 4 - der Träger 14 ist hier nicht dargestellt - verteilt angeordnet sind. Durch entsprechende Ansteuerung der jeweiligen Linearaktuatoren 11 wird genau an derjenigen Stelle zeitgleich mit dem Einwirken des Expanderkopfes 8 eine Kraft F zur Vorpositionierung erzeugt, die dem Expanderkopf 8 eine solche Verformung (Biegung) des Rohres 2 ermöglicht, dass seine Geradheit erreicht wird.As can be seen in Fig. 2, in the embodiment, the Rohrjustiervorrichtung of four
Der aktuelle Verschiebeweg der Keile 10 relativ zum Holm 4 kann mit Messmitteln 12 erfasst werden. Der vom Messmittel 12 gemessene Wert kann herangezogen werden, um über die kegelige Fläche des Keils 10 den radialen Abstand der radial außenliegenden Fläche des Richtsattels 3 von der Längsachse LT des Holmes 4 zu bestimmen.The current displacement of the
Der Holm 4 bzw. Träger 14 und die auf diesem angeordneten Keile 10 sowie Richtsättel 3 stellen zusammen mit den Linearaktuatoren 11 und den Messmitteln 12 Mittel 5 dar, mit denen die Richtsättel 3 von der Längsachse LT des Holmes 4 radial nach außen gedrückt werden können, so dass die Richtsättel 3 den gewünschten Vorpositionierungseffekt durch Aufbringen der Kräfte F, d. h. durch Andrücken an die Rohrinnenwand erzeugen. Auf dem Holm 4 können weiterhin Messmittel 13 angeordnet sein, die den Abstand der inneren Oberfläche des Rohres 2 vom Holm 4 ermitteln. Von diesen Messmitteln 13 können mehrere über den Umfang gleichmäßig verteilt angeordnet sein.The spar 4 or
In Fig. 1 ist dargestellt, dass das Messmittel 13 fest auf dem Holm 4 angeordnet ist und den Abstand bis zur inneren Rohrwand misst. Es sei angemerkt, dass das Messmittel 13 genauso auch auf der Trägerplatte 14 angeordnet sein kann und damit dann bei der Verschiebung der Trägerplatte 14 relativ zum Holm 4 mitfährt.In Fig. 1 it is shown that the measuring means 13 is fixedly arranged on the spar 4 and measures the distance to the inner tube wall. It should be noted that the measuring means 13 can also be arranged on the
Durch die Messmittel 12 und 13 sowie durch die Bewegungsmittel 6 bzw. Linearaktuatoren 11 sind alle Voraussetzungen dafür geschaffen, dass der Richtprozess vollautomatisch oder teilautomatisch durchgeführt werden kann bzw. im Falle der manuellen Durchführung mit größtmöglicher Unterstützung erfolgen kann.By the measuring means 12 and 13 and by the moving means 6 and
Zur Automatisierung bzw. Unterstützung des Richtprozesses können (nicht dargestellte) Steuer- bzw. Regelmittel eingesetzt werden, die die Lage der Innenwandung des Rohres 2 durch die Messmittel 13 erfassen, und zwar an verschiedenen axialen Positionen des Rohres 2. Weiterhin liefern die Messmittel 12 Informationen über die radiale Lage der radial außenliegenden Enden der Richtsättel 3. Hierdurch kann nach an sich bekannten Algorithmen bestimmt werden, an welcher axialen Position x des Rohres 2 über welchen Richtsattel 3 eine Andrück-Kraft F aufgebracht werden muss, um im Zusammenspiel mit dem Expanderkopf 8 ein solches Biegemoment in das Rohr 2 einleiten zu können, dass eine möglichst hohe Geradheit des Rohres erzielt wird.For the automation or support of the straightening process control means (not shown) can be used which detect the position of the inner wall of the tube 2 by the measuring means 13, namely at different axial positions of the tube 2. Furthermore, the measuring means 12 provide information This can be determined by algorithms known per se, at which axial position x of the tube 2 on which
Die radiale Bewegung der Richtsättel 3 erfolgt im Ausführungsbeispiel über die Keile 10. Es sei angemerkt, dass hierfür grundsätzlich auch Spindeln, Hydraulikzylinder oder ähnliche Bewegungselemente eingesetzt werden können.The radial movement of the
Die Richtsättel 3 können als Platten oder zum Ausgleich von Längsdehnungen des Rohres 2 auch als Platten-Rollensegment oder als Gleitplatte ausgebildet sein.The
Sowohl die Bewegungsmittel 6 als auch die Linearaktuatoren 11 sind im Ausführungsbeispiel schematisch als Kolben-Zylinder-Einheiten skizziert. Auch hierzu sei angemerkt, dass beliebige Bewegungsmittel zum Einsatz kommen können, beispielsweise elektrische Antriebe mit Spindelsystemen.Both the movement means 6 and the
Wie in Fig. 2 zu sehen ist, sind die vier Richtsättel 3 gleichmäßig über den Umfang des Holmes 4 verteilt angeordnet. Zum Richten des Rohres 2 ist mindestens ein Richtsattel 3 erforderlich. Je mehr Richtsättel 3 die Rohrjustiervorrichtung auf dem Holm 4 aufweist, desto genauer kann das Richten erfolgen.As can be seen in Fig. 2, the four straightening
- 11
- Vorrichtungcontraption
- 22
- Rohrpipe
- 33
- Richtsattelstraightening saddle
- 44
- HolmHolm
- 55
- Mittel zum radialen Bewegen des RichtsattelsMeans for radially moving the saddle
- 66
- Bewegungsmittelmeans
- 77
- axiales Ende des Holmesaxial end of the spar
- 88th
- Expanderkopfexpander head
- 99
- Segmentsegment
- 1010
- Keilwedge
- 1111
- Linearaktuatorlinear actuator
- 1212
- Messmittelmeasuring Equipment
- 1313
- Messmittelmeasuring Equipment
- 1414
- Trägerplattesupport plate
- 1515
- Pyramidenstumpftruncated pyramid
- 1717
- Zugstangepull bar
- xx
- Positionposition
- LL
- Längsachse des RohresLongitudinal axis of the tube
- LT L T
- Längsachse des TrägerelementsLongitudinal axis of the carrier element
- FF
- radiale Kraftradial force
- II
- Inneres des RohresInside of the pipe
Claims (10)
- Device (1) for the straightening of a pipe (2), which exhibits a radially expandable expansion head (8) which is introduced into the pipe, and at least one straightening saddle element (3), which can be positioned at any desired position (x) along the longitudinal axis (L) of the pipe (2) and which can exercise a radial force (F) on a part of the wall of the pipe (2) in order to straighten the pipe (2).
characterised in that
the minimum of one straightening saddle element (3) is designed to interact simultaneously with the expansion head (8) as a pipe adjustment device, whereby a spar (4) in the form of a bar or pipe is provided for, which can be introduced into the interior of the pipe (I), the minimum of one straightening saddle element (3) being arranged so as to be displaced along the longitudinal axis (LT) of the spar (4), and whereby means (5) are provided with which the straightening saddle element (3) can be pressed radially outwards from the longitudinal axis (LT) of the spar (4), so that the straightening saddle element (3) presses against the inner surface of the pipe (2). - Device according to Claim 1,
characterised in that
movement means (6), with which the minimum of one straightening saddle element (3) can be positioned at a predetermined position (x) along the longitudinal axis (LT) of the spar (4). - Device according to Claim 1 or 2,
characterised in that
the expansion head (8) is arranged at one axial end (7) of the spar (4), this head exhibiting segments (9) which can be expanded radially relative to the longitudinal axis (LT) of the spar (4). - Device according to one of Claims 1 to 3,
characterised in that
the minimum of one straightening saddle element (3) is connected to a wedge element (10), the translational movement of which causes the straightening saddle element (3) to be moved in the direction of the longitudinal axis (LT) of the spar (4). - Device according to Claim 4,
characterised in that
the wedge element (10) can be subjected to the effect of a linear actuator (11). - Device according to one of Claims 1 to 5,
characterised in that
several, for preference four, straightening saddle elements (3) are arranged distributed equally over the circumference of the spar (4) - Device according to one of Claims 1 to 6,
characterised by
measuring means (12) which detect the radial distance of the straightening saddle element (3) from the longitudinal axis (LT) of the spar (4). - Device according to one of Claims 1 to 7,
characterised in that
at least one measuring means (13) is arranged at the spar (4), with which the distance can be measured between the longitudinal axis (LT) of the spar (4) and the inner surface of the pipe (2). - Device according to Claim 8,
characterised in that
several measuring means (13) are arranged distributed equally over the circumference of the spar (4) - Device according to one of Claims 1 to 9,
characterised in that
the minimum of one straightening saddle element (3), together with means (5) for the radial movement of the straightening saddle element (3), is arranged on a carrier (14), in particular on a carrier plate, which can be moved in a translational manner relative to the spar (4) in the direction of its longitudinal axis (LT).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL04024920T PL1533051T3 (en) | 2003-11-21 | 2004-10-20 | Device for straightening a tube |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10354554 | 2003-11-21 | ||
DE10354554A DE10354554B4 (en) | 2003-11-21 | 2003-11-21 | Device for straightening a pipe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1533051A1 EP1533051A1 (en) | 2005-05-25 |
EP1533051B1 true EP1533051B1 (en) | 2006-07-19 |
Family
ID=34428853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04024920A Active EP1533051B1 (en) | 2003-11-21 | 2004-10-20 | Device for straightening a tube |
Country Status (6)
Country | Link |
---|---|
US (1) | US7159435B2 (en) |
EP (1) | EP1533051B1 (en) |
JP (1) | JP2005153022A (en) |
AT (1) | ATE333330T1 (en) |
DE (2) | DE10354554B4 (en) |
PL (1) | PL1533051T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100588476C (en) * | 2006-12-25 | 2010-02-10 | 西安重型机械研究所 | Tension mechanism for profiled bar pressure straightening device |
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DE602005022277D1 (en) * | 2005-04-29 | 2010-08-26 | Schlumberger Technology Bv | Apparatus and method for expanding tubular elements |
DE102006010040B3 (en) * | 2006-03-04 | 2007-10-11 | Eisenbau Krämer mbH | straightener |
DE102008059108A1 (en) * | 2008-10-16 | 2010-04-22 | Sms Meer Gmbh | Method and device for straightening pipes on an expander |
DE102009030152B4 (en) * | 2009-06-19 | 2011-12-22 | Europipe Gmbh | Method and device for process monitoring and process control when expanding steel UOE pipes |
CN102485366A (en) * | 2010-12-01 | 2012-06-06 | 西安轨道交通装备有限责任公司 | Deformed cylindrical section straightening device |
DE102012100705A1 (en) * | 2011-02-28 | 2012-08-30 | Rothenberger Ag | Apparatus and method for expanding the end of a plastic pipe |
CN102825103A (en) * | 2011-06-14 | 2012-12-19 | 瓦房店正达冶金轧机轴承有限公司 | Special shaping peculiar tool |
CN102896220A (en) * | 2012-09-28 | 2013-01-30 | 北京航星机器制造公司 | Hot forming/hot sizing/heat treatment integrated forming method and die |
CN103706678A (en) * | 2012-09-30 | 2014-04-09 | 天太·郭元焜 | Deformed orifice repairing machine |
JP5787416B2 (en) * | 2013-01-25 | 2015-09-30 | 東邦チタニウム株式会社 | Reaction vessel straightening device and reaction vessel straightening method using the same |
CN103691776B (en) * | 2013-12-11 | 2015-12-30 | 安徽伟宏钢结构集团股份有限公司 | A kind of school circle method of major-diameter thick-wall pipe |
CN103990661B (en) * | 2014-05-30 | 2016-01-20 | 晋西工业集团有限责任公司 | The synchronous rounding device of a kind of cylindrical member |
DE102014008550A1 (en) * | 2014-06-16 | 2015-12-17 | Sms Meer Gmbh | Mechanical tube expander |
DE102015212968B4 (en) * | 2014-07-17 | 2023-06-22 | Sms Group Gmbh | Method and device for calibrating the ends of metal pipes |
CN104624694B (en) * | 2014-12-02 | 2016-09-07 | 中北大学 | A kind of interior horizontal bar pressing method of cylindrical member |
CN105290160A (en) * | 2015-11-24 | 2016-02-03 | 哈尔滨工业大学 | Sizing device for titanium alloy cylindrical spun part |
DE202016001445U1 (en) * | 2016-03-02 | 2017-06-06 | Hegenscheidt-Mfd Gmbh | Deep rolling roller head for deep rolling of crank pins of a split pin crankshaft |
CN107597890A (en) * | 2017-09-30 | 2018-01-19 | 山西晋丰煤化工有限责任公司 | Pipe supporting device |
CN110369558A (en) * | 2019-08-01 | 2019-10-25 | 湖南南方通用航空发动机有限公司 | A kind of antidote and device of the deformation of thin-wall aluminium pipe tube wall |
TWM595548U (en) * | 2020-01-16 | 2020-05-21 | 詠基工業股份有限公司 | Pipe straightening structure |
CN112222233A (en) * | 2020-10-01 | 2021-01-15 | 崔通来 | Stainless steel section bar straightening machine |
CN112371775A (en) * | 2020-11-06 | 2021-02-19 | 天津市世纪道康建筑科技有限公司 | Straightening device for stainless steel long steel pipe |
CN114260640A (en) * | 2021-12-23 | 2022-04-01 | 河北华丰能源科技发展有限公司 | Pipeline mouth of pipe deviation correcting device |
CN116551383B (en) * | 2023-06-29 | 2023-11-07 | 江苏高尔德汽车钢管有限公司 | Preparation equipment and preparation method of high-strength thick-wall welded pipe |
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US816451A (en) * | 1903-12-30 | 1906-03-27 | Francis A Forwood | Implement for truing the internal forms of tubes. |
US958517A (en) * | 1909-09-01 | 1910-05-17 | John Charles Mettler | Well-casing-repairing tool. |
DE387335C (en) * | 1921-07-08 | 1923-12-27 | Schiess Akt Ges Maschf | Method for bulging and straightening weather ducts that have become out of round, thin-walled pipes and the like like |
DE399268C (en) * | 1921-12-24 | 1924-07-31 | Schiess Akt Ges Maschf | Device for bulging and straightening weather flutes that have become out of round, thin-walled pipes and the like. like |
US3077916A (en) * | 1960-08-12 | 1963-02-19 | Harold E Vaughn | Expander tool |
US4253324A (en) * | 1979-03-22 | 1981-03-03 | Nugent Jerry L | Drill pipe reforming method and apparatus |
US4574442A (en) * | 1980-09-02 | 1986-03-11 | Dickinson Lawrence C | Single pass boring, skiving and roller burnishing tool |
JPS6199522A (en) * | 1984-10-23 | 1986-05-17 | Mitsubishi Heavy Ind Ltd | Straightening device of pipe |
US4779445A (en) * | 1987-09-24 | 1988-10-25 | Foster Wheeler Energy Corporation | Sleeve to tube expander device |
DE19804619C1 (en) * | 1998-02-05 | 1999-08-05 | Roos Rainer | Machine for reforming underground plastics pipes |
WO2000037766A2 (en) * | 1998-12-22 | 2000-06-29 | Weatherford/Lamb, Inc. | Procedures and equipment for profiling and jointing of pipes |
-
2003
- 2003-11-21 DE DE10354554A patent/DE10354554B4/en not_active Expired - Fee Related
-
2004
- 2004-10-20 DE DE502004000981T patent/DE502004000981D1/en active Active
- 2004-10-20 AT AT04024920T patent/ATE333330T1/en not_active IP Right Cessation
- 2004-10-20 EP EP04024920A patent/EP1533051B1/en active Active
- 2004-10-20 PL PL04024920T patent/PL1533051T3/en unknown
- 2004-11-15 JP JP2004330728A patent/JP2005153022A/en active Pending
- 2004-11-19 US US10/994,206 patent/US7159435B2/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100588476C (en) * | 2006-12-25 | 2010-02-10 | 西安重型机械研究所 | Tension mechanism for profiled bar pressure straightening device |
Also Published As
Publication number | Publication date |
---|---|
US7159435B2 (en) | 2007-01-09 |
PL1533051T3 (en) | 2006-10-31 |
US20050126252A1 (en) | 2005-06-16 |
JP2005153022A (en) | 2005-06-16 |
DE10354554A1 (en) | 2005-06-23 |
DE10354554B4 (en) | 2005-09-15 |
DE502004000981D1 (en) | 2006-08-31 |
EP1533051A1 (en) | 2005-05-25 |
ATE333330T1 (en) | 2006-08-15 |
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