EP1166907A2 - Method of rolling tube blanks in a planetary skew rolling mill - Google Patents

Method of rolling tube blanks in a planetary skew rolling mill Download PDF

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Publication number
EP1166907A2
EP1166907A2 EP01250193A EP01250193A EP1166907A2 EP 1166907 A2 EP1166907 A2 EP 1166907A2 EP 01250193 A EP01250193 A EP 01250193A EP 01250193 A EP01250193 A EP 01250193A EP 1166907 A2 EP1166907 A2 EP 1166907A2
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EP
European Patent Office
Prior art keywords
tube blank
tube
rolling
feed
rotation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01250193A
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German (de)
French (fr)
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EP1166907A3 (en
EP1166907B1 (en
Inventor
Thomas Dipl.-Ing. Pfeiffer
Horst Dipl.-Ing. Franken
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SMS Siemag AG
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SMS Demag AG
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Priority claimed from DE10126411A external-priority patent/DE10126411B4/en
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1166907A2 publication Critical patent/EP1166907A2/en
Publication of EP1166907A3 publication Critical patent/EP1166907A3/en
Application granted granted Critical
Publication of EP1166907B1 publication Critical patent/EP1166907B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/06—Rolling hollow basic material, e.g. Assel mills

Definitions

  • the invention relates to a method for rolling tube blanks in a planetary cross-rolling mill.
  • a feed device for a cold pilger rolling mill is known from DE 33 04 002 C1, with two feed slides equipped with chucks. Each of these feed slides is arranged by two parallel and on both sides of the rolling line feed spindles in the Spindle nuts arranged in the feed carriage are moved. This arrangement of the feed spindles enables a moment-free introduction of force into the feed slide as well as a continuous advancement of the billet and thus a continuous rolling operation.
  • a cold pilger rolling mill is known from DE 29 22 941 C2, in which the first feed carriage provided with a device for grasping the end of the slug when feeding is.
  • the second feed carriage is a device for withdrawing the slug against the feed direction behind the mandrel abutment assigned to the first gearbox assigned.
  • the feed path of the second feed carriage is dimensioned so that the slug advanced by him at the end of the feed stroke with her in the rolling direction front end between the scaffolding and the driving device of the first Feed carriage. This design or arrangement also enables continuous Feed of the tube blanks to be rolled.
  • the speed of the rotor and the rotor would not be sufficient To change rollers against each other, but it would also have the position of the rollers to Pipe blanks and to be adapted to the pipe. This can be done with a running machine but do not perform. In most cases, the tube blank will be in one rotate in an undetermined direction and at an undetermined angular velocity.
  • the invention is based on the object, taking into account the special Peculiarities of this rolling process, the performance of the planetary diagonal rolling mill increase.
  • this object is achieved in that the feed of the rolls to be rolled Pipe blanks in the roll gap is carried out continuously in abutment, each of which in the Rolling gap located tube blank subsequent tube blank with one of the torsion corresponding rotation under the rolls of the tube end corresponding rotation is advanced.
  • FIGS 1 and 2 show schematically the structure of the system.
  • the device according to the invention is shown in FIG. 1.
  • the planetary cross roll mill 1 consists of the rotor 2 and the rollers 3 located therein, of which only one is drawn.
  • the rotor 2 is driven via the shaft journal 4, the rollers 3 over the shaft journal 5.
  • a mandrel bar 6 as an internal tool, which with their notches 7 and 8 in the two holding devices 9 and 1 0.
  • These holding devices 9, 10 are in a fixed position, but are by hand or motorized adjustment mechanism, which is not specifically shown, in the axial Direction of the mandrel rod 6 adjustable.
  • Electromotive or hydraulically adjustable clamping jaws 11 and 12 which are closed Condition clamp the mandrel rod 6 and against axially occurring, from the roll gap secure originating forces.
  • the jaws 11, 12 are freely rotatable to the undetermined rotation of the mandrel rod 6 not resulting from the rolling process. If the mandrel rod 6 could not rotate freely, the rolling process could be disturbed and cause 18 errors on the pipe.
  • the two feed devices 13 and 14 are arranged e.g. by means of hydraulic cylinders, not shown in Longitudinal direction of the mandrel rod 6 can be moved back and forth.
  • the hydraulic cylinders are pressure controlled to exert constant feed forces on the tube blank 17 while this is rolled.
  • the two feed devices 13, 14 are when walking through the tube blank joint by means of a synchronizer, not shown, at the same speed brought to an exact advance of the abutting pipe blanks 17 and 19 to ensure.
  • the feed devices 13, 14 are also with motor-adjustable clamping jaws 15 and 16 equipped, which alternately clamp the tube blank 17.
  • These jaws 15, 16 are also freely rotatable because the tube blank 17 through the Rolling process is set in an undetermined rotation, which does not change with the speed of the Mandrel rod 6 must match.
  • the jaws 15, 16 with a Equipped switchable rotary drive, not shown, which the tube blank 17 specifically in Can offset rotation if the course of the rolling process requires it. It is alternative possible to open the jaws 15, 16 during rolling and by the hydraulic cylinders to exert no feed force on the tube blank 17, because the feed also through the rolling process itself can be generated, because this is with cross rolling processes possible.
  • the tube blank 17 extends through the entire rolling mill and emerges behind the rollers 3 as tube 18, the rolling direction being represented by an arrow.
  • a second tube blank 19 is located between the two holding devices 9, 10, while a third tube blank 20 is in preparation.
  • the tube blanks are advanced by the driving devices 21, 22, 23 and 24.
  • the system works as follows: In the position shown in FIG the rolling process started.
  • the tube blank 17 is located with its head in the roll gap between the rollers 3 and leaves the planetary cross-rolling mill 1 as a tube 18 in the direction of the arrow, while the rotor 2 rotates around the tube 18.
  • the jaws 11 of the Holding device 9 are closed and keep the mandrel rod 6 free in the notch 7 rotating tight.
  • the feed devices 13 and 14 push the in hand-to-hand operation Rohrluppe 17 before, the jaws 15 and 16 are closed on the preliminary stroke and advance the tube blank freely rotating, open on the return stroke or at least open be depressurized.
  • the driver 21 is in the open position.
  • the clamping jaws 12 of the holding device 10 are open and a tube blank 19 has been created through the driving devices 22 and 23 in the direction of the arrow onto the rear end of the mandrel bar 6 postponed.
  • Another tube blank 20 is on hold and is to the correct time advanced by the driver 24.
  • Fig. 2 shows the rolling process in a more advanced stage.
  • the blow 25 between the tube blanks 17 and 19 is located just before the planetary cross rolling mill 1, that is, the tube blank 17 is advanced by the tube blank 19, the Tube blank 19 is located in the area of the holding device 9.
  • the jaws 11 are opened and the jaws 12 of the holding device 10 closed.
  • Rohrluppe 19 is advanced by the feed devices 13 and 14 in the rolling direction and all Drivers 21 to 24 are in the open position.
  • the tube blank 20 is now pushed in and it a phase according to FIG. 1 begins again.
  • a freely rotatable plate can also be provided be who puts on the back end of the following bob. But then this must have a central opening to push a new slug through the plate to allow through.
  • the plate with the clamping jaws is provided to grasp and forcibly rotate and advance, with rotation and feed speed correspond approximately to the rotation and feed speed that is exerted on the blank by the rolling stand.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Forging (AREA)

Abstract

A method and device for rolling tube blanks in a planetary skew rolling mill continuously feeds tubular blanks which are to be rolled into the rolling gap end to end. A first tube blank is located in the rolling mill. A second tubular blank following the first tubular blank which is respectively located in the rolling gap of the rolling mill is fed forward with a rotation corresponding to the rotation of the end of the first tube blank caused by the torsion under the rollers in the rolling mill.

Description

Die Erfindung betrifft ein Verfahren zum Walzen von Rohrluppen in einem Planetenschrägwalzwerk.The invention relates to a method for rolling tube blanks in a planetary cross-rolling mill.

Das Laden der Rohrluppen in das Planetenschrägwalzwerk erfolgt in der Praxis diskontinuierlich, d. h. das Beschicken mit einer neuen Rohrluppe führt zwangsläufig zu einer Stillstandszeit. Diese Stillstandszeiten beeinflussen selbstverständlich die Gesamtleistung des Walzwerkes.In practice, the loading of the tube blanks into the planetary diagonal rolling mill is discontinuous, d. H. loading a new pipe blank inevitably leads to a downtime. These downtimes naturally affect the overall performance of the Rolling mill.

Beim Kaltpilgerwalzen ist andererseits eine kontinuierliche Arbeitsweise bekannt. Hierbei erfolgt das Laden der Luppe ohne Unterbrechung des Walzbetriebes.
Die zu walzende Rohrluppe wird dabei in Richtung auf das hin- und hergehende Walzgerüst schrittweise durch angetriebene Vorschubschlitten vorgeschoben. Außerdem wird die Rohrluppe durch angetriebene Ein- und Auslaufspannfutter, die vor und hinter dem Walzgerüst angebracht sind, während des Vorschubes schrittweise gedreht.On the other hand, continuous operation is known for cold pilger rolling. Here, the loading of the billet takes place without interrupting the rolling operation.
The tube blank to be rolled is gradually advanced in the direction of the reciprocating roll stand by driven feed carriages. In addition, the tube blank is gradually rotated during the feed by driven inlet and outlet chucks, which are attached in front of and behind the roll stand.

Aus der DE 33 04 002 C1 ist eine Vorschubeinrichtung für ein Kaltpilgerwalzwerk bekannt, mit zwei mit Spannfuttern ausgerüsteten Vorschubschlitten. Jeder dieser Vorschubschlitten wird durch zwei parallel und beidseitig der Walzlinie angeordnete Vorschubspindeln über im Vorschubschlitten angeordnete Spindelmuttern bewegt. Diese Anordnung der Vorschubspindeln ermöglicht eine momentfreie Krafteinleitung in die Vorschubschlitten sowie ein kontinuierliches Vorschieben der Luppe und damit einen kontinuierlichen Walzbetrieb.A feed device for a cold pilger rolling mill is known from DE 33 04 002 C1, with two feed slides equipped with chucks. Each of these feed slides is arranged by two parallel and on both sides of the rolling line feed spindles in the Spindle nuts arranged in the feed carriage are moved. This arrangement of the feed spindles enables a moment-free introduction of force into the feed slide as well as a continuous advancement of the billet and thus a continuous rolling operation.

Aus der DE 29 22 941 C2 ist ein Kaltpilgerwalzwerk bekannt, bei dem der erste Vorschubschlitten mit einer Einrichtung zum Hinterfassen des Luppenendes beim Vorschub versehen ist. Dem zweiten Vorschubschlitten ist eine Vorrichtung zum Zurückziehen der Luppe entgegen der Vorschubrichtung hinter das dem ersten Schaltgetriebe zugeordnete Dornwiderlager zugeordnet. Der Vorschubweg des zweiten Vorschubschlittens ist so bemessen, dass die von ihm vorgeschobene Luppe am Ende des Vorschubhubes mit ihrem in Walzrichtung vorn liegenden Ende zwischen Gerüst und Mitnahmevorrichtung des ersten Vorschubschlittens liegt. Auch diese Ausbildung bzw. Anordnung ermöglicht den kontinuierlichen Vorschub der zu walzenden Rohrluppen.A cold pilger rolling mill is known from DE 29 22 941 C2, in which the first feed carriage provided with a device for grasping the end of the slug when feeding is. The second feed carriage is a device for withdrawing the slug against the feed direction behind the mandrel abutment assigned to the first gearbox assigned. The feed path of the second feed carriage is dimensioned so that the slug advanced by him at the end of the feed stroke with her in the rolling direction front end between the scaffolding and the driving device of the first Feed carriage. This design or arrangement also enables continuous Feed of the tube blanks to be rolled.

Beim Kaltpilgerwalzen muß sowohl der Vorschub in axialer Richtung wie auch die Drehung der Rohrluppe zwangsweise erfolgen, damit durch die konisch profilierten Walzen im hin-und hergehenden Walzgerüst ein gleichmäßiges Walzen über den Umfang des Rohres erfolgt.In cold pilger rolling, both the feed in the axial direction and the rotation must be of the tube blank are forcibly carried out so that through the conically profiled rollers back and forth Hereby rolling stand a uniform rolling over the circumference of the tube he follows.

Anders ist es beim Schrägwalzen. Hier sind im Walzgerüst planetenartig um die Rohrluppe umlaufende, kegelförmige Walzen vorhanden. Durch diese Walzenanordnung wird die Rohrluppe kontinuierlich in das Walzgerüst eingezogen. Vorschubschlitten sind eigentlich nur zum Anwalzen des Luppenkopfes erforderlich, können allerdings auch während des laufenden Betriebes optional zugeschaltet werden.It is different with cross rolling. Here are in the rolling stand planetary around the tube blank revolving, conical rollers available. Through this arrangement of rollers Tube blank continuously drawn into the roll stand. Feed sledges are actually only required for rolling the head, but can also be used during the running operations can optionally be switched on.

Eine weitere Besonderheit beim Schrägwalzen ist, dass sowohl die Luppe als auch das Rohr durch Torsion des Materials unter den Walzen sich langsam drehen, wobei sowohl die Drehrichtung als auch die Winkelgeschwindigkeit unbestimmt sind. Soll das auslaufende Rohr hinter dem Walzgerüst aufgewickelt werden, so muss dies beim Austritt aus dem Walzgerüst berücksichtigt werden, d.h. es darf sich nicht drehen. Dies wird dadurch erreicht, dass die Drehzahl des Rotors und der Walzen, die durch einen aus zwei Motoren bestehenden sogenannten Überlagerungsantrieb angetrieben werden, zueinander verändert werden. Zu diesem Zweck ist auf der Auslaufseite des Walzwerkes ein Sensor angebracht, der eine Rotation des auslaufenden Rohres feststellen kann. Das Drehen der Luppe läßt sich, falls sich das Rohr nicht dreht, nur mit einem unvertretbar hohem Meß- und Regelaufwand verhindern. In diesem Fall würde es nicht ausreichen, die Drehzahl des Rotors und der Walzen gegeneinander zu verändern, sondern es müsste auch die Stellung der Walzen zur Rohrluppe und zum Rohr angepasst werden. Dies lässt sich bei einer laufenden Maschine aber nicht durchführen. In den meisten Fällen wird sich deshalb die Rohrluppe in einer unbestimmten Richtung und mit einer unbestimmten Winkelgeschwindigkeit drehen. Another special feature of cross rolling is that both the billet and the tube by twisting the material under the rollers rotate slowly, both the direction of rotation as well as the angular velocity are undetermined. Should the pipe run out must be wound up behind the roll stand, so this has to be done when leaving the roll stand be taken into account, i.e. it mustn't turn. This is achieved in that the Rotation speed of the rotor and the rollers, the so-called by two motors Superposition drive are driven, mutually changed. To For this purpose, a sensor is attached to the outlet side of the rolling mill Can detect rotation of the leaking pipe. You can turn the slab if the pipe does not turn, only with an unacceptably high measurement and control effort prevent. In this case, the speed of the rotor and the rotor would not be sufficient To change rollers against each other, but it would also have the position of the rollers to Pipe blanks and to be adapted to the pipe. This can be done with a running machine but do not perform. In most cases, the tube blank will be in one rotate in an undetermined direction and at an undetermined angular velocity.

Der Erfindung liegt nun die Aufgabe zugrunde, unter Berücksichtigung der besonderen Eigenheiten dieses Walzverfahrens, die Leistung des Planetenschrägwalzwerkes zu erhöhen.The invention is based on the object, taking into account the special Peculiarities of this rolling process, the performance of the planetary diagonal rolling mill increase.

Gelöst wird diese Aufgabe erfindungsgemäß dadurch, dass die Zuführung der zu walzenden Rohrluppen in den Walzspalt kontinuierlich Stoß an Stoß erfolgt, wobei die jeweils der im Walzspalt befindlichen Rohrluppe nachfolgende Rohrluppe mit einer der durch die Torsion unter den Walzen bedingten Drehung des Rohrluppenendes entsprechenden Drehung vorgeschoben wird.According to the invention, this object is achieved in that the feed of the rolls to be rolled Pipe blanks in the roll gap is carried out continuously in abutment, each of which in the Rolling gap located tube blank subsequent tube blank with one of the torsion corresponding rotation under the rolls of the tube end corresponding rotation is advanced.

Hierzu ist eine Einrichtung vorgesehen zum Zuführen von Rohrluppen in ein Planetenschrägwalzwerk, in dem eine Rohrluppe über ein in seiner Stellung zum Walzspalt ortsfest gehaltenes Innenwerkzeug auswalzbar ist,

  • mit einer ersten und einer im axialen Abstand hiervon angeordneten zweiten Halteeinrichtung für die Domstange, deren Spannbacken unabhängig voneinander radial an die Dornstange anstellbar sind,
  • sowie einer ersten und einer zweiten Vorschubeinrichtung für die Rohrluppen, deren Klemmbacken unabhängig voneinander radial an die Rohrluppen anstellbar und mit dieser Vorschubrichtung bzw. entgegen dieser verschiebbar sind,
  • sowie einer Vorrichtung zum Aufschieben einer neuen Rohrluppe auf das hintere Ende der in Walzposition gehaltenen Dornstange während des Walzens einer vorhergehenden Rohrluppe,
  • wobei die Bewegung der Halteeinrichtungen und der Vorschubeinrichtungen derart aufeinander abstellbar sind, dass das hintere Ende der vorhergehenden und das vordere Ende der nachfolgenden Rohrluppe Stoß an Stoß dem Walzspalt zuführbar sind.
    • For this purpose, a device is provided for feeding tube blanks into a planetary cross-rolling mill, in which a tube blank can be rolled out by means of an internal tool held stationary in its position relative to the roll gap.
  • with a first and a second holding device arranged axially at a distance from it for the dome rod, the clamping jaws of which can be adjusted radially independently of one another on the mandrel rod,
  • and a first and a second feed device for the tube blanks, the clamping jaws of which can be adjusted radially independently of one another to the tube blanks and can be displaced with this feed direction or against it,
  • and a device for pushing a new tube blank onto the rear end of the mandrel bar held in the rolling position during the rolling of a previous tube blank,
  • wherein the movement of the holding devices and the feed devices can be adjusted to one another in such a way that the rear end of the preceding and the front end of the subsequent tube blank can be fed to the roll gap in an abrupt manner.

    • Weitere Ausgestaltungen ergeben sich aus den Unteransprüchen.Further refinements result from the subclaims.

    Die erfindungsgemäße Lösung soll nachfolgend unter Bezug auf die Zeichnungen erläutert werden.The solution according to the invention is explained below with reference to the drawings become.

    Dabei zeigen die Figuren 1 und 2 schematisch den Aufbau der Anlage. Figures 1 and 2 show schematically the structure of the system.

    Die erfindungsgemäße Vorrichtung wird in der Fig. 1 dargestellt. Das Planetenschrägwalzwerk 1 besteht aus dem Rotor 2 und den darin befindlichen Walzen 3, von denen nur eine gezeichnet ist. Der Rotor 2 wird dabei über den Wellenzapfen 4 angetrieben, die Walzen 3 über den Wellenzapfen 5. An beiden Wellenzapfen befinden sich nichtgezeigte Motoren, die zusammen einen Überlagerungsantrieb bilden. Durch gegenseitige Abstimmung der Drehzahlen der Motoren ist es möglich, ein Drehen des aus den Walzen 3 auslaufenden Rohres 18 zu verhindern.The device according to the invention is shown in FIG. 1. The planetary cross roll mill 1 consists of the rotor 2 and the rollers 3 located therein, of which only one is drawn. The rotor 2 is driven via the shaft journal 4, the rollers 3 over the shaft journal 5. On both shaft journals there are motors, not shown, which together form a superposition drive. By mutually coordinating the speeds of the motors, it is possible to rotate the tube running out of the rollers 3 18 to prevent.

    Im Walzspalt unter der Walze 3 befindet sich als Innenwerkzeug eine Dornstange 6, die mit ihren Einkerbungen 7 und 8 in den beiden Halteeinrichtungen 9 und 1 0 liegt. Diese Halteeinrichtungen 9, 10 befinden sich in einer ortsfesten Position, sind aber mittels eines von Hand oder motorisch betätigten Verstellmechanismus, der nicht eigens dargestellt ist, in axialer Richtung der Dornstange 6 einstellbar. Innerhalb der Halteeinrichtungen 9, 10 befinden sich elektromotorisch oder hydraulisch anstellbare Spannbacken 11 und 12, die im geschlossenen Zustand die Dornstange 6 einspannen und gegen axial auftretende, aus dem Walzspalt herrührende Kräfte sichern. Die Spannbacken 11, 12 sind frei drehbar gelagert, um die aus dem Walzprozeß herrührende unbestimmte Drehung der Dornstange 6 nicht zu behindern. Würde sich die Dornstange 6 nicht frei drehen können, könnte der Walzprozeß gestört werden und auf dem Rohr 18 Fehler verursachen.In the roll gap under the roll 3 there is a mandrel bar 6 as an internal tool, which with their notches 7 and 8 in the two holding devices 9 and 1 0. These holding devices 9, 10 are in a fixed position, but are by hand or motorized adjustment mechanism, which is not specifically shown, in the axial Direction of the mandrel rod 6 adjustable. Are located within the holding devices 9, 10 Electromotive or hydraulically adjustable clamping jaws 11 and 12, which are closed Condition clamp the mandrel rod 6 and against axially occurring, from the roll gap secure originating forces. The jaws 11, 12 are freely rotatable to the undetermined rotation of the mandrel rod 6 not resulting from the rolling process. If the mandrel rod 6 could not rotate freely, the rolling process could be disturbed and cause 18 errors on the pipe.

    Zwischen dem Planetenschrägwalzwerk 1 und der Halteeinrichtung 9 sind zwei Vorschubeinrichtungen 13 und 14 angeordnet, die z.B. mittels nichtgezeigter Hydraulikzylinder in Längsrichtung der Dornstange 6 hin und her bewegt werden können. Die Hydraulikzylinder sind druckgeregelt, um konstante Vorschubkräfte auf die Rohrluppe 17 auszuüben, während diese gewalzt wird. Die beiden Vorschubeinrichtungen 13, 14 werden beim Durchwandern des Rohrluppenstoßes mittels einer nichtgezeigten Synchroneinrichtung auf gleiche Geschwindigkeit gebracht, um ein exaktes Vorschieben der Stoß an Stoß liegenden Rohrluppen 17 und 19 zu gewährleisten.Between the planetary cross-rolling mill 1 and the holding device 9 are two feed devices 13 and 14 arranged e.g. by means of hydraulic cylinders, not shown in Longitudinal direction of the mandrel rod 6 can be moved back and forth. The hydraulic cylinders are pressure controlled to exert constant feed forces on the tube blank 17 while this is rolled. The two feed devices 13, 14 are when walking through the tube blank joint by means of a synchronizer, not shown, at the same speed brought to an exact advance of the abutting pipe blanks 17 and 19 to ensure.

    Die Vorschubeinrichtungen 13, 14 sind gleichfalls mit motorisch anstellbaren Klemmbacken 15 und 16 ausgerüstet, die wechselweise die Rohrluppe 17 einspannen. Diese Klemmbacken 15, 16 sind ebenfalls frei drehbar gelagert, weil auch die Rohrluppe 17 durch den Walzprozeß in eine unbestimmte Drehung versetzt wird, die nicht mit der Drehzahl der Dornstange 6 übereinstimmen muß. Zusätzlich sind die Klemmbacken 15, 16 mit einem nichtgezeigten zuschaltbaren Drehantrieb ausgerüstet, der die Rohrluppe 17 gezielt in Drehung versetzen kann, falls der Verlauf des Walzprozesses dies verlangt. Altemativ ist es möglich, die Klemmbacken 15, 16 während des Walzens zu öffnen und durch die Hydraulikzylinder keine Vorschubkraft auf die Rohrluppe 17 auszuüben, weil der Vorschub auch durch den Walzprozeß selbst erzeugt werden kann, denn dies ist bei Schrägwalzprozessen möglich.The feed devices 13, 14 are also with motor-adjustable clamping jaws 15 and 16 equipped, which alternately clamp the tube blank 17. These jaws 15, 16 are also freely rotatable because the tube blank 17 through the Rolling process is set in an undetermined rotation, which does not change with the speed of the Mandrel rod 6 must match. In addition, the jaws 15, 16 with a Equipped switchable rotary drive, not shown, which the tube blank 17 specifically in Can offset rotation if the course of the rolling process requires it. It is alternative possible to open the jaws 15, 16 during rolling and by the hydraulic cylinders to exert no feed force on the tube blank 17, because the feed also through the rolling process itself can be generated, because this is with cross rolling processes possible.

    Die Rohrluppe 17 erstreckt sich durch das gesamte Walzwerk hindurch und tritt hinter den Walzen 3 als Rohr 18 aus, wobei die Walzrichtung durch einen Pfeil dargestellt wird. Eine zweite Rohrluppe 19 befindet sich zwischen den beiden Halteeinrichtungen 9, 10, während eine dritte Rohrluppe 20 in Bereitstellung liegt.
    Vorgeschoben werden die Rohrluppen durch die Treibapparate 21, 22, 23 und 24.    The tube blank 17 extends through the entire rolling mill and emerges behind the rollers 3 as tube 18, the rolling direction being represented by an arrow. A second tube blank 19 is located between the two holding devices 9, 10, while a third tube blank 20 is in preparation.
    The tube blanks are advanced by the driving devices 21, 22, 23 and 24.

    Die Funktionsweise des Systems ist wie folgt: In der in Fig. 1 gezeigten Stellung hat gerade der Walzvorgang begonnen. Die Rohrluppe 17 befindet sich mit ihrem Kopf im Walzspalt zwischen den Walzen 3 und verläßt als Rohr 18 das Planetenschrägwalzwerk 1 in Pfeilrichtung, während der Rotor 2 um das Rohr 18 herum rotiert. Die Spannbacken 11 der Halteeinrichtung 9 sind geschlossen und halten in der Einkerbung 7 die Dornstange 6 frei rotierend fest. Die Vorschubeinrichtungen 13 und 14 schieben im Hand-an-Hand-Betrieb die Rohrluppe 17 vor, wobei die Klemmbacken 15 und 16 auf dem Vorhub geschlossen sind und die Rohrluppe frei rotierend vorschieben, auf dem Rückhub dagegen geöffnet oder zumindest drucklos geschaltet werden. Der Treibapparat 21 befindet sich in geöffneter Stellung. Die Spannbacken 12 der Halteeinrichtung 10 sind geöffnet und eine Rohrluppe 19 wurde durch die Treibapparate 22 und 23 in Pfeilrichtung auf das hintere Ende der Dornstange 6 aufgeschoben. Eine weitere Rohrluppe 20 befindet sich in Wartestellung und wird zum richtigen Zeitpunkt durch den Treibapparat 24 vorgeschoben.The system works as follows: In the position shown in FIG the rolling process started. The tube blank 17 is located with its head in the roll gap between the rollers 3 and leaves the planetary cross-rolling mill 1 as a tube 18 in the direction of the arrow, while the rotor 2 rotates around the tube 18. The jaws 11 of the Holding device 9 are closed and keep the mandrel rod 6 free in the notch 7 rotating tight. The feed devices 13 and 14 push the in hand-to-hand operation Rohrluppe 17 before, the jaws 15 and 16 are closed on the preliminary stroke and advance the tube blank freely rotating, open on the return stroke or at least open be depressurized. The driver 21 is in the open position. The clamping jaws 12 of the holding device 10 are open and a tube blank 19 has been created through the driving devices 22 and 23 in the direction of the arrow onto the rear end of the mandrel bar 6 postponed. Another tube blank 20 is on hold and is to the correct time advanced by the driver 24.

    Die Fig. 2 zeigt den Walzvorgang in einem weiter fortgeschrittenen Stadium. Der Luppenstoß 25 zwischen den Rohrluppen 17 und 19 befindet sich kurz vor dem Planetenschrägwalzwerk 1, das heißt die Rohrluppe 17 wird von der Rohrluppe 19 vorgeschoben, wobei die Rohrluppe 19 sich im Bereich der Halteeinrichtung 9 befindet. Deren Spannbacken 11 sind geöffnet und die Spannbacken 12 der Halteeinrichtung 10 geschlossen. Die Rohrluppe 19 wird von den Vorschubeinrichtungen 13 und 14 in Walzrichtung vorgeschoben und alle Treibapparate 21 bis 24 befinden sich in geöffneter Stellung. Hat nun die Rohrluppe 19 die Halteeinrichtung 9 passiert, schließen deren Spannbacken 11 und mit etwas Zeitverzögerung öffnen die Spannbacken 12 der Halteeinrichtung 10. In den Leerplatz zwischen den Halteeinrichtungen 9 und 1 0 wird nun die Rohrluppe 20 hineingeschoben und es beginnt wieder eine Phase nach Fig. 1.Fig. 2 shows the rolling process in a more advanced stage. The blow 25 between the tube blanks 17 and 19 is located just before the planetary cross rolling mill 1, that is, the tube blank 17 is advanced by the tube blank 19, the Tube blank 19 is located in the area of the holding device 9. The jaws 11 are opened and the jaws 12 of the holding device 10 closed. Rohrluppe 19 is advanced by the feed devices 13 and 14 in the rolling direction and all Drivers 21 to 24 are in the open position. Now has the tube blank 19 Holding device 9 happens, close the jaws 11 and with a little time delay open the jaws 12 of the holding device 10. In the empty space between the holding devices 9 and 1 0, the tube blank 20 is now pushed in and it a phase according to FIG. 1 begins again.

    Mit Hilfe des beschriebenen Ablaufes ist es möglich, die Rohrluppen Stoß an Stoß durch das Planetenschrägwalzwerk hindurchzufahren, ohne den Walzvorgang zu unterbrechen. Auf diese Weise werden Nebenzeiten vermieden und die Produktivität der Walzanlage erhöht.With the help of the procedure described, it is possible to run through the pipe collars Drive through the planetary diagonal rolling mill without interrupting the rolling process. On In this way, idle times are avoided and the productivity of the rolling mill is increased.

    Weiterhin ist dann aber berücksichtigt, dass die Rohrluppe sich ständig allein vorwärtsbewegt und dabei auch unbestimmte Drehungen ausführt. Wenn - wie bei der erfindungsgemäßen Lösung angegeben - die Vorschubeinrichtungen frei drehbare Spannbacken aufweisen, d. h. Spannbacken, die sich koaxial mit der sich drehenden Rohrluppe mitdrehen können, dann kann die Zuführung einer neuen Rohrluppe ohne Unterbrechung des Walzvorgangen erfolgen. Hierzu ist lediglich das - vom Kaltpilgerwalzen an sich bekannte - wechselnde Öffnen und Schließen der Spannbacken dann noch notwendig.Furthermore, it is then taken into account that the tube blank constantly moves forward on its own and also doing indefinite turns. If - as with the invention Solution given - the feed devices have freely rotatable clamping jaws, d. H. Jaws that rotate coaxially with the rotating tube blank then a new tube blank can be fed without interrupting the rolling process respectively. The only thing that changes here is that which is known per se from cold pilger rolling It is then still necessary to open and close the jaws.

    Anstelle dieser frei drehbaren Spannbacken kann auch ein frei drehbarer Teller vorgesehen sein, der sich an das hintere Ende der nachfolgenden Luppe anlegt. Dieser muß dann aber eine zentrale Öffnung aufweisen, um ein Durchschieben einer neuen Luppe durch den Teller hindurch zu ermöglichen.Instead of these freely rotatable clamping jaws, a freely rotatable plate can also be provided be who puts on the back end of the following bob. But then this must have a central opening to push a new slug through the plate to allow through.

    In einer weiteren Ausgestaltung der Erfindung ist vorgesehen, die Luppe mit den Spannbacken zu greifen und zwangsweise zu drehen und vorzuschieben, wobei Dreh - und Vorschubgeschwindigkeit in etwa der Drehung und Vorschubgeschwindigkeit entsprechen, die durch das Walzgerüst auf die Luppe ausgeübt wird. In a further embodiment of the invention, the plate with the clamping jaws is provided to grasp and forcibly rotate and advance, with rotation and feed speed correspond approximately to the rotation and feed speed that is exerted on the blank by the rolling stand.

    Positionslisteposition list

    11
    PlanetenschrägwalzwerkPlanetary cross rolling mill
    22
    Rotorrotor
    33
    Walzeroller
    44
    Wellenzapfenshaft journal
    55
    Wellenzapfenshaft journal
    66
    Domstangemandrel rod
    77
    Einkerbungnotch
    88th
    Einkerbungnotch
    99
    Halteeinrichtungholder
    1010
    Halteeinrichtungholder
    1111
    Spannbackenjaws
    1212
    Spannbackenjaws
    1313
    Vorschubeinrichtungfeeder
    1414
    Vorschubeinrichtungfeeder
    1515
    Klemmbackenjaws
    1616
    Klemmbackenjaws
    1717
    Rohrluppetube blank
    1818
    Rohrpipe
    1919
    Rohrluppetube blank
    2020
    Rohrluppetube blank
    2121
    Treibapparatdrive apparatus
    2222
    Treibapparatdrive apparatus
    2323
    Treibapparatdrive apparatus
    2424
    Treibapparatdrive apparatus
    2525
    LuppenstoßLuppenstoß

    Claims (8)

    Verfahren zum Walzen von Rohrluppen in einem Planetenschrägwalzwerk,
    dadurch gekennzeichnet, dass die Zuführung der zu walzenden Rohrluppen in den Walzspalt kontinuierlich Stoß an Stoß erfolgt, wobei die jeweils der im Walzspalt befindlichen Rohrluppe nachfolgende Rohrluppe mit einer der durch die Torsion unter den Walzen bedingten Drehung des Rohrluppenendes entsprechenden Drehung vorgeschoben wird.    Process for rolling tube blanks in a planetary diagonal rolling mill,
    characterized in that the feeding of the tube blanks to be rolled into the roll gap takes place continuously abutting, the tube blank following the tube blank located in the roller gap being advanced with a rotation corresponding to the rotation of the tube end caused by the torsion under the rollers.         Verfahren nach Anspruch 1,
    dadurch gekennzeichnet, dass die Drehung der nachfolgenden Rohrluppe durch Reibschluß über die Drehung des Endes der im Walzspalt befindlichen Rohrluppe erfolgt.    Method according to claim 1,
    characterized in that the rotation of the subsequent tube blank takes place by frictional engagement via the rotation of the end of the tube blank located in the roll gap.         Verfahren nach einem der vorstehenden Ansprüche,
    dadurch gekennzeichnet, dass die nachfolgende Rohrluppe während des Vorschiebens frei drehbar gelagert ist.    Method according to one of the preceding claims,
    characterized in that the subsequent tube blank is freely rotatable during the advancement.         Verfahren nach Anspruch 1,
    dadurch gekennzeichnet, dass die nachfolgende Rohrluppe zwangsweise gedreht und vorgeschoben wird, wobei die Dreh - und Vorschubrate der Drehung und Vorschubgeschwindigkeit entspricht, die durch das Walzgerüst auf die im Walzspalt befindliche Rohrluppe ausgeübt wird.    Method according to claim 1,
    characterized in that the subsequent tube blank is forcibly rotated and advanced, the rate of rotation and feed rate corresponding to the rotation and feed rate exerted by the roll stand on the tube blank located in the roll gap.         Einrichtung zum Zuführen von Rohrluppen in ein Planetenschrägwalzwerk, in dem eine Rohrluppe über ein im Walzspalt ortsfest gehaltenes Innenwerkzeug (6) auswalzbar ist, mit einer ersten und einer im axialen Abstand hiervon angeordneten zweiten Halteeinrichtung (11,12) für die Dornstange (6), die unabhängig voneinander radial an die Dornstange (6) anstellbar sind, sowie einer ersten und einer zweiten Vorschubeinrichtung (13,14) für die Rohrluppen (17), die unabhängig voneinander radial an die Rohrluppen anstellbar und mit dieser in Vorschubrichtung bzw. entgegen dieser verschiebbar sind, sowie einer Vorrichtung (22,23) zum Aufschieben einer neuen Rohrluppe auf das hintere Ende der in Walzposition gehaltenen Dornstange (6) während des Walzens einer vorhergehenden Rohrluppe, wobei die Bewegung der Halteeinrichtungen (11,12) und der Vorschubeinrichtungen (13,14) derart aufeinander abstellbar sind, dass das hintere Ende der vorhergehenden und das vordere Ende der nachfolgenden Rohrluppe Stoß an Stoß dem Walzspalt zuführbar sind. Device for feeding tube blanks into a planetary diagonal rolling mill, in which a tube blank can be rolled out by means of an inner tool (6) held stationary in the roll gap, with a first and a second holding device (11, 12) for the mandrel bar (6) arranged at an axial distance therefrom, which can be adjusted radially independently of one another on the mandrel bar (6), and a first and a second feed device (13, 14) for the tube blanks (17), which can be adjusted radially independently of one another and can be displaced with the tube blanks in the feed direction or against the latter, and a device (22, 23) for pushing a new tube blank onto the rear end of the mandrel bar (6) held in the rolling position during the rolling of a previous tube blank, wherein the movement of the holding devices (11, 12) and the feed devices (13, 14) can be adjusted to one another in such a way that the rear end of the preceding and the front end of the subsequent tube blank can be fed to the roll gap in an abrupt manner. Einrichtung nach Anspruch 5,
    dadurch gekennzeichnet, dass die Vorschubeinrichtung (13,14) um die Rohrluppenlängsachse frei drehbar gelagerte Spannfutter (15,16) aufweist.    Device according to claim 5,
    characterized in that the feed device (13, 14) has a chuck (15, 16) which is freely rotatable about the pipe longitudinal axis.         Einrichtung nach Anspruch 5,
    dadurch gekennzeichnet, dass die Halteeinrichtung (11,12) für die Dornstange um die Dornstangenlängsachse frei drehbar gelagert ist.    Device according to claim 5,
    characterized in that the holding device (11, 12) for the mandrel rod is freely rotatable about the longitudinal axis of the mandrel rod.         Einrichtung nach Anspruch 5,
    dadurch gekennzeichnet, dass die Spannbacken (15,16) der Vorschubeinrichtung (13,14) um die Rohrluppenachse angetrieben drehbar angeordnet sind.    Device according to claim 5,
    characterized in that the clamping jaws (15, 16) of the feed device (13, 14) are arranged so as to be rotatable about the axis of the tube blank.
    EP01250193A 2000-06-14 2001-05-31 Method of rolling tube blanks in a planetary skew rolling mill Expired - Lifetime EP1166907B1 (en)

    Applications Claiming Priority (4)

    Application Number Priority Date Filing Date Title
    DE10029114 2000-06-14
    DE10029114 2000-06-14
    DE10126411A DE10126411B4 (en) 2000-06-14 2001-05-22 A method for rolling tube billets in a planetary cross rolling mill and apparatus for feeding tube billets into a planetary cross rolling mill
    DE10126411 2001-05-22

    Publications (3)

    Publication Number Publication Date
    EP1166907A2 true EP1166907A2 (en) 2002-01-02
    EP1166907A3 EP1166907A3 (en) 2004-02-11
    EP1166907B1 EP1166907B1 (en) 2005-11-30

    Family

    ID=26006066

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP01250193A Expired - Lifetime EP1166907B1 (en) 2000-06-14 2001-05-31 Method of rolling tube blanks in a planetary skew rolling mill

    Country Status (9)

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    US (1) US6497129B2 (en)
    EP (1) EP1166907B1 (en)
    JP (1) JP2002028704A (en)
    CN (1) CN1234475C (en)
    AT (1) ATE311263T1 (en)
    AU (1) AU775845B2 (en)
    CA (1) CA2350358A1 (en)
    DE (1) DE50108219D1 (en)
    ES (1) ES2249382T3 (en)

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    DE10316910B3 (en) * 2003-04-12 2004-09-02 Sms Meer Gmbh Production of metallic pipes comprises rolling the start of the pipe loop and/or the end of the pipe loop together using an inner tool
    DE10349056A1 (en) * 2003-10-17 2005-05-19 Kocks Technik Gmbh & Co. Kg Process for rolling rolling stock e.g. metal rods in a rolling mill comprises measuring the rotation of the rolling stock about its longitudinal direction, and controlling a drive parameter of a planetary cross rolling mill
    DE102007014079A1 (en) * 2007-03-21 2008-09-25 Kocks Technik Gmbh & Co. Kg Method and device for rolling rolling in a rolling mill with a cross rolling mill
    US20110017807A1 (en) * 2009-07-23 2011-01-27 Chakravarti Management, Llc Method for rolled seamless clad pipes
    US20110017339A1 (en) * 2009-07-23 2011-01-27 Chakravarti Management, Llc Method for rolled seamless clad pipes
    DE102011116666B4 (en) 2011-06-07 2015-05-28 Sms Meer Gmbh Apparatus and method for rolling tube blanks
    DE102013109218A1 (en) 2013-08-26 2015-02-26 Sandvik Materials Technology Deutschland Gmbh Cold pilger rolling mill and method of forming a billet into a tube
    CN106391709B (en) * 2016-12-20 2019-01-04 广东海亮铜业有限公司 Continuous rolling planetary rolling
    CN106825071A (en) * 2017-02-10 2017-06-13 余姚市永建精管机械制造厂 A kind of steel pipe continuous conveying mechanism
    CN107671140B (en) * 2017-08-09 2023-12-22 徐州锡沂康成食品检验检测研究院有限公司 Machining device and method for cross wedge rolling piece
    CN107497856A (en) * 2017-08-30 2017-12-22 广东冠邦科技有限公司 The method and apparatus of pipe continuous rolling
    CN110449466B (en) * 2018-05-08 2020-11-20 宝武特种冶金有限公司 Method for reducing bending of seamless steel pipe cold rolling mill core rod
    CN108637024A (en) * 2018-06-19 2018-10-12 广东海亮铜业有限公司 One kind being continuously fed into feed mechanism
    CN114054506A (en) * 2020-08-06 2022-02-18 江苏兴荣高新科技股份有限公司 Method for continuously rolling copper pipe by planetary pipe mill

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    Also Published As

    Publication number Publication date
    AU5190201A (en) 2001-12-20
    EP1166907A3 (en) 2004-02-11
    CA2350358A1 (en) 2001-12-14
    ES2249382T3 (en) 2006-04-01
    CN1328886A (en) 2002-01-02
    CN1234475C (en) 2006-01-04
    AU775845B2 (en) 2004-08-19
    US6497129B2 (en) 2002-12-24
    EP1166907B1 (en) 2005-11-30
    DE50108219D1 (en) 2006-01-05
    US20020020201A1 (en) 2002-02-21
    JP2002028704A (en) 2002-01-29
    ATE311263T1 (en) 2005-12-15

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