EP1166907B1 - 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 PDFInfo
- Publication number
- EP1166907B1 EP1166907B1 EP01250193A EP01250193A EP1166907B1 EP 1166907 B1 EP1166907 B1 EP 1166907B1 EP 01250193 A EP01250193 A EP 01250193A EP 01250193 A EP01250193 A EP 01250193A EP 1166907 B1 EP1166907 B1 EP 1166907B1
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- European Patent Office
- Prior art keywords
- tube blank
- tube
- rolling
- rotation
- blanks
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- 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.)
- Expired - Lifetime
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000007664 blowing Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 1
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Classifications
-
- 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 mill is known, with two feed carriages equipped with chucks. Each of these feed carriages is by two parallel and both sides of the rolling line arranged feed spindles in im Moving carriage arranged Spindelmuttem moves. This arrangement of feed screws allows a torque-free introduction of force in the feed slide and a Continuous advancement of the billet and thus a continuous rolling operation.
- a cold pilger rolling mill is known in which the first feed slide provided with a device for grasping the Luppenendes during feed is.
- the second feed carriage is a device for retracting the billet opposite to the feed direction behind the first gearbox associated mandrel abutment assigned.
- the feed travel of the second feed carriage is dimensioned that at the end of the feed stroke with his in the rolling direction front end between the frame and driving device of the first Feed carriage is.
- the invention is based on the object, taking into account the special Peculiarities of this rolling process, the performance of the planetary cross rolling mill to increase.
- a device for feeding tube blanks into a planetary cross rolling mill, in which a tube blank can be rolled over a stationary tool held in its position relative to the roll gap, with a first and an axially spaced therefrom arranged second holding device for the dome rod, the clamping jaws are independent of each other radially adjoin the mandrel rod, and a first and a second feed device for the tube blanks, the clamping jaws of which are independently of one another radially displaceable on the tube blanks and can be displaced with this feed direction or against the latter, 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 preceding tube blank, wherein the movement of the holding means and the feed devices are so mutually ab sensible, that the rear end of the preceding and the front end of the subsequent tube blank are fed to the roll gap abutting.
- the figures 1 and 2 show schematically the structure of the system.
- the device according to the invention is shown in FIG.
- the planetary cross rolling mill 1 consists of the rotor 2 and the rollers 3 therein, of which only one is drawn.
- the rotor 2 is driven via the shaft journal 4, the rollers. 3 over the shaft 5.
- the together form a superposition drive.
- a mandrel 6, with their notches 7 and 8 in the two holding devices 9 and 1 0 is located.
- These holding devices 9, 10 are in a fixed position, but by hand or motor-operated adjusting mechanism, which is not specifically shown in the axial Direction of the mandrel 6 adjustable.
- electric motor or hydraulically engageable jaws 11 and 12 are located within the holding devices 9, 10 in the closed Condition clamp the mandrel 6 and against axially occurring, out of the nip to secure the forces that lead the way.
- the clamping jaws 11, 12 are freely rotatably mounted to the from the rolling process originating indefinite rotation of the mandrel 6 does not hinder. If the mandrel bar 6 could not rotate freely, the rolling process could be disturbed and cause on the pipe 18 errors.
- two feed devices 13 and 14 which are e.g. by means of not shown hydraulic cylinder in Longitudinal direction of the mandrel 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 Rohrluppenschreibes by means of a synchronizer not shown to the same speed brought to a precise advancement of the butt tube bluff 17 and 19 to ensure.
- the feed devices 13, 14 are also with motor adjustable jaws Equipped 15 and 16, which alternately clamp the tube billet 17.
- These jaws 15, 16 are also freely rotatably supported, because the tube blank 17 by the Rolling process is placed in an indefinite rotation that does not match the speed of the Mandrel 6 must match.
- the jaws 15, 16 with a not shown switchable rotary drive equipped, the 17 tube in targeted Rotation can offset, if required by the course of the rolling process. Altematively it is possible to open the jaws 15, 16 during rolling and by the hydraulic cylinders exert no feed force on the tube blank 17, because the feed also by The rolling process itself can be generated, because this is in Schrägwalzluien possible.
- the tube blank 17 extends through the entire rolling mill and exits behind the rollers 3 as a tube 18, wherein the rolling direction is 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 provided.
- the tube blanks are preceded by the blowing devices 21, 22, 23 and 24.
- the operation of the system is as follows: In the position shown in Fig. 1 has just the rolling process started.
- the tube blank 17 is located with its head in the nip between the rollers 3 and leaves as a pipe 18, the planetary cross rolling mill 1 in the arrow direction, while the rotor 2 rotates around the pipe 18.
- the jaws 11 of Holding device 9 are closed and keep in the notch 7, the mandrel 6 free rotating firmly.
- the feed devices 13 and 14 push in hand-to-hand operation the Pipe body 17 before, the jaws 15 and 16 are closed on the forward stroke and advance the tube blank freely rotating, on the return stroke, however, open or at least be depressurized.
- the blowing apparatus 21 is in the open position.
- the clamping jaws 12 of the holding device 10 are opened and a tube blank 19 was by the blowing apparatus 22 and 23 in the arrow direction on the rear end of the mandrel 6 postponed.
- Another tube blank 20 is in waiting position and becomes the advanced through the blowing apparatus 24.
- Fig. 2 shows the rolling process in a more advanced stage.
- the Luppen Strike 25 between the tube blanks 17 and 19 is just before the planetary cross rolling mill 1, that is, the tube blank 17 is advanced from the tube blank 19, wherein the Tube blank 19 is located in the region of the holding device 9.
- Their jaws 11 are opened and the jaws 12 of the holding device 10 is closed.
- the tube blank 19 is advanced by the feeders 13 and 14 in the rolling direction and all Examapparate 21 to 24 are in the open position.
- the Retaining device 9 happens close their jaws 11 and with some time delay open the jaws 12 of the holding device 10.
- the tube blank 20 is now pushed in and it again begins a phase of FIG. 1.
- the billet with the jaws to grab and forcibly turn and advance, being rotational and feed speed correspond in about the rotation and feed rate, the is exercised by the rolling stand on the billet.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
- Forging (AREA)
Abstract
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.The loading of the tube blanks in the planetary cross rolling mill takes place in practice discontinuously, d. H. Loading with a new blank will inevitably lead to a downtime. Of course, these downtimes 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, in cold pilgering rolling, a continuous operation is known. Here, the loading of the billet takes place without interrupting the rolling operation.
The tube blank to be rolled is thereby progressively advanced in the direction of the reciprocating rolling stand by driven feed carriages.
In addition, the tube blank is rotated by driven infeed and outfeed chucks, which are mounted in front of and behind the rolling stand, during the feed step by step.
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 Spindelmuttem bewegt. Diese Anordnung der Vorschubspindeln ermöglicht eine momentfreie Krafteinleitung in die Vorschubschlitten sowie ein kontinuierliches Vorschieben der Luppe und damit einen kontinuierlichen Walzbetrieb.From DE 33 04 002 C1 a feed device for a cold pilger mill is known, with two feed carriages equipped with chucks. Each of these feed carriages is by two parallel and both sides of the rolling line arranged feed spindles in im Moving carriage arranged Spindelmuttem moves. This arrangement of feed screws allows a torque-free introduction of force in the feed slide and 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.From DE 29 22 941 C2 a cold pilger rolling mill is known in which the first feed slide provided with a device for grasping the Luppenendes during feed is. The second feed carriage is a device for retracting the billet opposite to the feed direction behind the first gearbox associated mandrel abutment assigned. The feed travel of the second feed carriage is dimensioned that at the end of the feed stroke with his in the rolling direction front end between the frame and driving device of the first Feed carriage is. This training or arrangement allows the 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.When cold pilger rolling both the feed in the axial direction as well as the rotation must the tube blank is forced, so that the conically profiled rolls in the back and 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 the Schrägwalzen. Here are in the rolling stand planet-like around the tube billet circumferential, conical rollers present. By this roller arrangement is the Tube billet continuously drawn into the mill stand. Feed carriages are actually only required for rolling the Luppenkopfes, but also during the running operation can be optionally 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 peculiarity of skew rolling is that both the billet and the pipe By twisting the material under the rollers, slowly rotate, taking both the direction of rotation as well as the angular velocity are indefinite. Should the leaking pipe be wound behind the rolling mill, this must be when leaving the mill be taken into account, i. it must not turn. This is achieved by the fact that Speed of the rotor and the rollers, which consist of a so-called two motors Overhead drive to be driven to each other. To For this purpose, a sensor is mounted on the outlet side of the rolling mill, a Can determine rotation of the expiring tube. The turning of the doll can be, if the tube does not rotate, only with an unreasonably high measurement and control effort prevent. In this case, it would not be enough, the speed of the rotor and the To change rollers against each other, but it would also be the position of the rollers for Rohrluppe and be adapted to the pipe. This can be done with a running machine but do not perform. In most cases, therefore, the tube blank in a undefined direction and rotate at an indeterminate 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 cross rolling mill to 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.This object is achieved according to the invention in that the supply of the to be rolled Pipe blanks in the nip are made continuously butt to bump, with each of the im Rolling gap located Rohrluppe subsequent Rohrluppe with one of the torsion under the rolls conditional rotation 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 over a stationary tool held in its position relative to the roll gap,
with a first and an axially spaced therefrom arranged second holding device for the dome rod, the clamping jaws are independent of each other radially adjoin the mandrel rod,
and a first and a second feed device for the tube blanks, the clamping jaws of which are independently of one another radially displaceable on the tube blanks and can be displaced with this feed direction or against the latter,
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 preceding tube blank,
wherein the movement of the holding means and the feed devices are so mutually abstellbar, that the rear end of the preceding and the front end of the subsequent tube blank are fed to the roll gap abutting.
Weitere Ausgestaltungen ergeben sich aus den Unteransprüchen.Further embodiments emerge from the subclaims.
Die erfindungsgemäße Lösung soll nachfolgend unter Bezug auf die Zeichnungen erläutert werden.The solution according to the invention will be explained below with reference to the drawings become.
Dabei zeigen die Figuren 1 und 2 schematisch den Aufbau der Anlage. The 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. The planetary
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 nip under the
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
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
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 exits behind the
The tube blanks are preceded by the blowing
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 operation of the system is as follows: In the position shown in Fig. 1 has just
the rolling process started. The tube blank 17 is located with its head in the nip
between the
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 Luppen Strike
25 between the
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 described procedure, it is possible, the tube billets abutting through the Drive through planetary cross rolling without interrupting the rolling process. On This way, non-productive 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 Rahrluppe 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, however, it is then taken into account that the tube blank constantly moves forward alone and doing indefinite rotations. If - as in the invention Solution indicated - the feed devices have freely rotatable jaws, d. H. Clamping jaws that co-axially co-rotate with the rotating Rahrluppe can, then the supply of a new tube blank without interrupting the Walzvorgangen respectively. For this purpose, only the - known from cold pilgering rolls - changing Opening and closing the jaws then still necessary.
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 jaws and a freely rotatable plate can be provided be, who leans on the back end of the following party. This must then but have a central opening to push a new doll through the plate 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 is provided, the billet with the jaws to grab and forcibly turn and advance, being rotational and feed speed correspond in about the rotation and feed rate, the is exercised by the rolling stand on the billet.
- 11
- PlanetenschrägwalzwerkPlanetary cross rolling mill
- 22
- Rotorrotor
- 33
- Walzeroller
- 44
- Wellenzapfenshaft journal
- 55
- Wellenzapfenshaft journal
- 66
- Dornstangemandrel
- 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)
- Method of rolling tube blanks in a planetary skew rolling mill,
characterised in that
the supply of the tube blanks to be rolled into the roll gap is effected continuously end to end, the tube blank which respectively is subsequent to the tube blank located in the roll gap being fed forward with a rotation which corresponds to the rotation of the tube blank end which is caused by the torsion under the rolls. - Method according to claim 1,
characterised in that
the rotation of the subsequent tube blank is effected by frictional engagement via the rotation of the end of the tube blank located in the roll gap. - Method according to one of the preceding claims,
characterised in that
the subsequent tube blank is mounted freely rotatably during feeding forward. - Method according to claim 1,
characterised in that
the subsequent tube blank is forcibly rotated and fed forward, the rotational and forward feed rate corresponding to the rotation and forward feed speed which is exerted by the roll stand on the tube blank located in the roll gap. - Device for supplying tube blanks in a planetary skew rolling mill, in which a tube blank can be rolled out via an inner tool (6) which is held in a stationary manner in the roll gap, having a first holding device and a second holding device (11, 12) which is disposed at an axial spacing from said first holding device, for the mandrel bar (6), which holding devices can be adjusted radially relative to the mandrel bar (6) independently of each other,
and a first and a second forward feed device (13, 14) for the tube blanks (17), which can be adjusted radially relative to the tube blanks independently of each other and can be displaced with the latter in the forward feed direction or counter to the latter,
and a device (22, 23) for sliding on a new tube blank onto the rear end of the mandrel bar (6) which is held in the rolling position during rolling of a preceding tube blank,
the movement of the holding devices (11, 12) and of the forward feed devices (13, 14) being able to be coordinated to each other such that the rear end of the preceding and the front end of the subsequent tube blank can be supplied end to end to the roll gap. - Device according to claim 5,
characterised in that
the forward feed device (13, 14) has clamping chucks (15, 16) which are mounted freely rotatably about the tube blank longitudinal axis. - Device according to claim 5,
characterised in that
the holding device (11, 12) for the mandrel bar is mounted freely rotatably about the mandrel bar longitudinal axis. - Device according to claim 5,
characterised in that
the clamping jaws (15, 16) of the forward feed device (13, 14) are disposed driven rotatably about the tube blank axis.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10029114 | 2000-06-14 | ||
| DE10029114 | 2000-06-14 | ||
| DE10126411 | 2001-05-22 | ||
| 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 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1166907A2 EP1166907A2 (en) | 2002-01-02 |
| EP1166907A3 EP1166907A3 (en) | 2004-02-11 |
| EP1166907B1 true 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)
| Country | Link |
|---|---|
| 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) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20110017339A1 (en) * | 2009-07-23 | 2011-01-27 | Chakravarti Management, Llc | Method for rolled seamless clad pipes |
| US20110017807A1 (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 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2080943B1 (en) * | 1970-01-30 | 1974-02-15 | Mannesmann Ag | |
| DE3220921A1 (en) * | 1982-06-03 | 1983-12-08 | Kocks Technik Gmbh & Co, 4010 Hilden | ROLLING MILL SYSTEM WITH A PLANETARY PULLING ROLLER |
| DE3432014A1 (en) * | 1984-08-31 | 1986-03-06 | Alfred 4670 Lünen Schaffrin | Cold pilger rolling process |
| DE3533119A1 (en) * | 1985-09-17 | 1987-03-26 | Kocks Technik | SLOPE ROLLING DEVICE FOR ROLLING HOLLOW BLOCKS |
| DE3808681C1 (en) * | 1988-03-11 | 1988-11-10 | Mannesmann Ag, 4000 Duesseldorf, De | Turning and feed device on cold-pilger rolling plants for reducing tube blanks or the like |
| DE3823134C1 (en) * | 1988-07-05 | 1989-04-20 | Mannesmann Ag, 4000 Duesseldorf, De | Method and apparatus for the production of tubes by the cold-pilger method |
| DE3905559A1 (en) * | 1989-02-23 | 1990-08-30 | Esw Roehrenwerke Gmbh | Cross-rolling mill for the manufacture of seamless tubes |
-
2001
- 2001-05-31 DE DE50108219T patent/DE50108219D1/en not_active Expired - Lifetime
- 2001-05-31 EP EP01250193A patent/EP1166907B1/en not_active Expired - Lifetime
- 2001-05-31 ES ES01250193T patent/ES2249382T3/en not_active Expired - Lifetime
- 2001-05-31 AT AT01250193T patent/ATE311263T1/en not_active IP Right Cessation
- 2001-06-12 CA CA002350358A patent/CA2350358A1/en not_active Abandoned
- 2001-06-13 US US09/880,362 patent/US6497129B2/en not_active Expired - Lifetime
- 2001-06-13 AU AU51902/01A patent/AU775845B2/en not_active Ceased
- 2001-06-14 JP JP2001179670A patent/JP2002028704A/en active Pending
- 2001-06-14 CN CN01121276.4A patent/CN1234475C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2350358A1 (en) | 2001-12-14 |
| ES2249382T3 (en) | 2006-04-01 |
| US6497129B2 (en) | 2002-12-24 |
| EP1166907A2 (en) | 2002-01-02 |
| EP1166907A3 (en) | 2004-02-11 |
| AU5190201A (en) | 2001-12-20 |
| DE50108219D1 (en) | 2006-01-05 |
| JP2002028704A (en) | 2002-01-29 |
| CN1328886A (en) | 2002-01-02 |
| CN1234475C (en) | 2006-01-04 |
| ATE311263T1 (en) | 2005-12-15 |
| US20020020201A1 (en) | 2002-02-21 |
| AU775845B2 (en) | 2004-08-19 |
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