EP0755731B1 - Rolling stand for calibre rolling and sizing - Google Patents

Rolling stand for calibre rolling and sizing Download PDF

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Publication number
EP0755731B1
EP0755731B1 EP96250128A EP96250128A EP0755731B1 EP 0755731 B1 EP0755731 B1 EP 0755731B1 EP 96250128 A EP96250128 A EP 96250128A EP 96250128 A EP96250128 A EP 96250128A EP 0755731 B1 EP0755731 B1 EP 0755731B1
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EP
European Patent Office
Prior art keywords
rolling
gear
sizing
drive shaft
drive shafts
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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
Application number
EP96250128A
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German (de)
French (fr)
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EP0755731A1 (en
Inventor
Hermann-Josef Dr.-Ing. Klingen
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Vodafone GmbH
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Mannesmann AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
    • B21B13/103—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane for rolling bars, rods or wire

Definitions

  • the invention relates to a roll stand, in particular for caliber and sizing of rod-shaped or tubular rolling stock, with three forming a common caliber opening driven rollers, the gears of which mesh with one another via meshing gears connected drive shafts in a common transverse to the rolling direction Level are arranged.
  • Rolling stands of this type are, for example, in the German published application 37 03 756. You receive the three rollers arranged in a star shape Drive torque via spur gear teeth, the distribution of the Driving torque from one driven roller shaft to the other Roller shafts are carried out via bevel gear pairs, the bevel gears on each of the Roller shafts are arranged.
  • the object and aim of the present invention is to provide the gear train on one Roll stand with three rolls of the generic type to improve so that the input and and forwarding the drive torque is simplified without rolling accuracy deteriorate and on the exact setting of the meshing with each other Abandon gears.
  • the elaborate assembly and disassembly processes should simplified and maintenance should be improved.
  • the gearbox sub Maintaining the technical function - much cheaper to create be.
  • the invention proposes that the two intermeshing gears of two adjacent drive shafts Form angular gear with crown gear teeth.
  • Angular gears with crown gear teeth are very old, their application goes back to antiquity.
  • the hallmark of such gears is Use of at least one cylindrical arranged coaxially to the drive shaft Ritzels, which meshes with a crown gear toothed on the face, with the axes of the pinion from the parallels are inclined by an angle up to 90 ° can.
  • a cylindrical pinion with involute teeth of a drive shaft with a matching toothed crown gear of the neighboring one at 60 ° to the first Drive shaft combs inclined drive shaft arise as a result of the cylindrical Pinion no more axial forces in the drive shafts toothed with these pinions, see above that these drive shafts only need to be mounted radially.
  • the means a very simple construction of the roller bearing and thus a considerable one simplified assembly and disassembly of these gear parts. Elaborate setting and Fitting work that required high accuracy with bevel gear teeth and very were time-consuming, because the axial infeed of the cylindrical pinion was too the beveled crown gears do not require high accuracy. Leave the sprockets form separately from the associated roller mounts, whereby the Have component costs reduced further.
  • a sizing mill for pipes according to the prior art is rough shown schematically, in its roll stand 4 on the same level arranged three drive shafts 1, 2, 3 the rollers 5a, 5b, 5c to each other drive shafts inclined by 60 ° are arranged.
  • the rollers 5 a to 5 c are of this type calibrated so that, as can be seen at 6, they form a closed caliber.
  • the pin 1 a is connected to the drive, not shown, are the bevel gears 7 a shrunk, which in turn with the bevel gears 8 Combine drive shafts 2 and 3 and thereby at 1 a into drive shaft 1 initiated drive torque, on the drive shafts 2 and 3 of the rollers 5 b and 5 c to distribute.
  • the drive shaft 1 is on both sides of the bevel gears 7 a in radial bearings 9 supported; due to the symmetrical arrangement of the bevel gears 7 a Drive shaft 1 largely free of axial forces. Not so the drive shafts 2 and 3. These waves are due to the toothing of the bevel gears 8 through in the axial direction acting thrust loads significantly, in additional thrust bearings 10th must be included.
  • the entire gear of the mill stand builds easier and lighter, is cheaper to manufacture and easier to build waiting.
  • the setting of the pinion 14 on the crown gears 13 is easy with simple means possible because no high accuracy in setting and Assembly work is required.
  • the pinion 14 are designed as separate components that support the rollers 5 b, 5 c Hollow shafts 15 can be screwed on the end face at 16. In the state of the art 2, however, the hollow shafts 15 were in one piece with the bevel gears 8 executed and correspondingly complicated and expensive.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

The rolling unit for finish rolling of rod a pipe products incorporates three driven rolls (5a, 5b, 5c) jointly forming the roll aperture. The drive shafts of these rolls are connected by meshing gearwheels located in a plane perpendicular to the rolling direction. Any two meshing gearwheels (13, 14, 16) of any two adjacent shafts (1, 2, 3) form an angular gear unit with crown-wheel teeth.

Description

Die Erfindung betrifft ein Walzgerüst, insbesondere zum Kaliber- und Maßwalzen von stab- oder rohrförmigem Walzgut, mit drei eine gemeinsame Kaliberöffnung bildenden angetriebenen Walzen, deren über miteinander kämmende Zahnräder getrieblich verbundene Antriebswellen in einer gemeinsamen quer zur Walzrichtung verlaufenden Ebene angeordnet sind.The invention relates to a roll stand, in particular for caliber and sizing of rod-shaped or tubular rolling stock, with three forming a common caliber opening driven rollers, the gears of which mesh with one another via meshing gears connected drive shafts in a common transverse to the rolling direction Level are arranged.

Walzgerüste dieser Art sind beispielsweise in der Deutschen Offenlegungsschrift 37 03 756 beschrieben. Die sternförmig angeordneten drei Walzen erhalten ihr Antriebsmoment über Stirnradverzahnungen, wobei die Verteilung des Antriebsmomentes von der einen angetriebenen Walzenwelle auf die anderen Walzenwellen über Kegelradpaare erfolgt, deren Kegelräder auf jeder der Walzenwellen angeordnet sind.Rolling stands of this type are, for example, in the German published application 37 03 756. You receive the three rollers arranged in a star shape Drive torque via spur gear teeth, the distribution of the Driving torque from one driven roller shaft to the other Roller shafts are carried out via bevel gear pairs, the bevel gears on each of the Roller shafts are arranged.

Die Antriebstechnik derartiger Walzwerke erfordert eine stabile Lagerung der Antriebswellen, auch in Axialrichtung, weil durch die Verwendung der miteinander kämmenden Kegelradpaare und verursacht durch die Winkel zueinander angeordneten Zähne hohe axiale Schubkräfte in die Antriebswellen eingeleitet werden, die nur durch aufwendige Axiallager auf den beiden Wellen aufgefangen werden können. Diese zusätzlich zu den Radiallagern vorzusehenden Axiallager benötigen Platz in den ohnehin sehr eng bauenden Getrieben. Die Montage und Demontage der Axiallager und des gesamten Getriebes wird durch diese Lager negativ beeinträchtigt; abgesehen davon sind die erforderlichen Axiallager teuer. The drive technology of such rolling mills requires stable storage of the Drive shafts, also in the axial direction, because of the use of each other intermeshing bevel gear pairs and caused by the angles to each other arranged teeth high axial thrust forces are introduced into the drive shafts, which can only be absorbed by complex axial bearings on the two shafts can. These need axial bearings to be provided in addition to the radial bearings Space in the already very narrow gearboxes. The assembly and disassembly of the Thrust bearings and the entire gearbox is adversely affected by these bearings; apart from that, the required thrust bearings are expensive.

Aufgabe und Ziel der vorliegenden Erfindung ist es, die Getriebeausbildung an einem Walzgerüst mit drei Walzen der gattungsgemäßen Art so zu verbessern, daß die Ein-und und Weiterleitung des Antriebsmomentes vereinfacht wird, ohne Walzgenauigkeit zu verschlechtern und auf die exakte Einstellmöglichkeit der miteinander kämmenden Zahnräder zu verzichten. Die aufwendigen Montage- und Demontagevorgänge sollen vereinfacht und die Wartung soll verbessert werden. Insgesamt soll das Getriebeunter Beibehaltung der technischen Funktion- wesentlich kostengünstiger zu erstellen sein.The object and aim of the present invention is to provide the gear train on one Roll stand with three rolls of the generic type to improve so that the input and and forwarding the drive torque is simplified without rolling accuracy deteriorate and on the exact setting of the meshing with each other Abandon gears. The elaborate assembly and disassembly processes should simplified and maintenance should be improved. Overall, the gearbox sub Maintaining the technical function - much cheaper to create be.

Zur Lösung der Aufgabe wird erfindungsgemäß vorgeschlagen, daß jeweils die zwei miteinander kämmenden Zahnräder zweier benachbarter Antriebswellen ein Winkelgetriebe mit Kronenradverzahnung bilden.To solve the problem, the invention proposes that the two intermeshing gears of two adjacent drive shafts Form angular gear with crown gear teeth.

Winkelgetriebe mit Kronenradverzahnungen an sich sind sehr alt, ihre Anwendung reicht bis ins Altertum zurück. Das Kennzeichen derartiger Getriebe ist die Verwendung mindestens eines zylindrischen koaxial zur Antriebswelle angeordneten Ritzels, welches mit einem stirnseitig verzahnten Kronenrad kämmt, wobei die Achsen des Ritzels aus der Parallelen um einen Winkelbetrag bis zu 90 ° schräg gestellt seien können.Angular gears with crown gear teeth are very old, their application goes back to antiquity. The hallmark of such gears is Use of at least one cylindrical arranged coaxially to the drive shaft Ritzels, which meshes with a crown gear toothed on the face, with the axes of the pinion from the parallels are inclined by an angle up to 90 ° can.

Erst in der jüngeren Vergangenheit ist es durch umfangreiche Untersuchungen und mathematische Beschreibungen mit Hilfe des Computers gelungen, die Eingriffsverhältnisse zwischen dem zylindrischen Ritzel und dem Kronenrad so zu optimieren, daß die technische Anwendbarkeit der Kronenradverzahnung auch für komplizierte Antriebe anwendbar wurde. Dabei hat sich gezeigt, daß Winkelgetriebe mit Kronenradverzahnung gegenüber den bisher verwendeten Kegelradgetrieben neue Konstruktionsmöglichkeiten bieten, wie große Übersetzungen, axiale Freiheit des Ritzels und beliebige Achsenwinkel der miteinander kämmenden Antriebswellen.Only in the recent past has it been through extensive research and mathematical descriptions succeeded with the help of the computer, the Engagement ratios between the cylindrical pinion and the crown gear optimize that the technical applicability of the crown gear toothing also for complicated drives became applicable. It has been shown that angular gear with crown gear teeth compared to the bevel gearboxes previously used Construction options, such as large translations, offer axial freedom of the Ritzels and any axis angle of the meshing drive shafts.

Es wurde herausgefunden, daß Winkelgetriebe mit Kronenradverzahnung hervorragend geeignet sind, die bestehenden Probleme zu lösen, die an Walzgerüsten mit drei angetriebenen Walzen bei Verwendung von Kegelradgetrieben bisher auftraten. Ohne die technische Funktion des Walzenantriebes zu beeinträchtigen, können mit einem Winkelgetriebe mit Kronenradverzahnung erhebliche Verbesserungen und Kosteneinsparungen vor allem dadurch erzielt werden, daß infolge der geometrischen Ausbildung der Kronenradverzahnung die Axiallagerung zweier Antriebswellen entfallen kann.It was found that angular gear with crown gear teeth are ideally suited to solve the existing problems associated with rolling stands with three driven rollers when using bevel gears so far occurred. Without affecting the technical function of the roller drive, can be considerable with an angular gear with crown gear teeth Improvements and cost savings are mainly achieved by: due to the geometrical design of the crown gear teeth, the axial bearing two drive shafts can be omitted.

Insbesondere, wenn nach einem ausgestalteten Merkmal der Erfindung vorgesehen ist, daß jeweils ein zylindrisches Ritzel mit Evolventenverzahnung einer Antriebswelle mit einem passend verzahnten Kronenrad der benachbarten unter 60 ° zur ersten Antriebswelle geneigten Antriebswelle kämmt, entstehen infolge der zylindrischen Ritzel keine Axialkräfte in den mit diesen Ritzeln verzahnten Antriebswellen mehr, so daß diese Antriebswellen ausschließlich radial gelagert zu werden brauchen. Das bedeutet einen sehr einfachen Aufbau der Walzenlagerung und damit eine erheblich vereinfachte Montage und Demontage dieser Getriebeteile. Aufwendige Einstell-und Paßarbeiten, die bei Kegelradverzahnungen hohe Genauigkeit erforderten und sehr zeitaufwendig waren, entfallen, weil die axiale Zustellung der zylindrischen Ritzel zu den abgeschrägten Kronenrädern keine hohe Genauigkeit erfordert. Die Ritzel lassen sich von den zugehörigen Walzenaufnahmen separat ausbilden, wodurch sich die Bauteilkosten weiter reduzieren lassen.In particular if provided according to a feature of the invention is that in each case a cylindrical pinion with involute teeth of a drive shaft with a matching toothed crown gear of the neighboring one at 60 ° to the first Drive shaft combs inclined drive shaft, arise as a result of the cylindrical Pinion no more axial forces in the drive shafts toothed with these pinions, see above that these drive shafts only need to be mounted radially. The means a very simple construction of the roller bearing and thus a considerable one simplified assembly and disassembly of these gear parts. Elaborate setting and Fitting work that required high accuracy with bevel gear teeth and very were time-consuming, because the axial infeed of the cylindrical pinion was too the beveled crown gears do not require high accuracy. Leave the sprockets form separately from the associated roller mounts, whereby the Have component costs reduced further.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben.An embodiment of the invention is shown in the drawing and will described below.

Es zeigt:

Figur 1
ein erfindungsgemäßes Walzwerk mit der Kronenradverzahnung der Antriebswellen und
Figur 2
ein herkömmliches, mit Kegelrädern verzahntes Walzwerk nach dem Stand der Technik.
It shows:
Figure 1
an inventive rolling mill with the crown gear teeth of the drive shafts and
Figure 2
a conventional prior art rolling mill geared with bevel gears.

In Figur 2 ist ein Maßwalzwerk für Rohre nach dem Stand der Technik grob schematisch dargestellt, in dessen Walzgerüst 4 auf den in gleicher Ebene angeordneten drei Antriebswellen 1, 2, 3 die Walzen 5a,5b,5c auf zueinander jeweils um 60 °geneigten Antriebswellen angeordnet sind. Die Walzen 5 a bis 5 c sind derart kalibriert, daß sie, wie bei 6 erkennbar, ein geschlossenes Kaliber bilden. Auf der Antriebswelle 1, deren Zapfen 1 a mit dem nicht dargestellten Antrieb verbunden ist, sind die Kegelräder 7 a aufgeschrumpft, die ihrerseits mit den Kegelrädern 8 der Antriebswellen 2 und 3 kämmen und dadurch das bei 1 a in die Antriebswelle 1 eingeleitete Antriebsmomemt, auf die Antriebswellen 2 und 3 der Walzen 5 b und 5 c verteilen. Die Antriebswelle 1 ist beidseitig der Kegelräder 7 a in Radiallagern 9 abgestützt; infolge der symmetrischen Anordnung der Kegelräder 7 a ist die Antriebswelle 1 weitgehend frei von Axialkräften. Nicht so die Antriebswellen 2 und 3. Diese Wellen sind infolge der Verzahnung der Kegelräder 8 durch in Achsrichtung wirkende Schubkräfte erheblich belastet, die in zusätzlichen Axiallagern 10 aufgenommen werden müssen. Dazu sind die Antriebswellen 2 und 3 mit Bunden 11 versehen, an denen sich die Axiallager 10 abstützen, und zwar nach beiden Seiten, weil je nach Drehrichtung des Getriebes die Schubkräfte in unterschiedlichen Richtungen wirken können. Neben den Axiallagern 10 sind kräftig dimensionierte Radiallager 12 vorzusehen, so daß, wie deutlich an der Zeichnungsfigur erkennbar ist, aufgrund der beengten Platzverhältnisse eine komplizierte Getriebeausbildung notwendig wird. Die Demontage und Montage der Antriebswellen 2 und 3 mit ihren Lagern und die Einstellung der Kegelräder 8 zu den mit ihnen gepaarten Kegelrädern 7a gestaltet sich äußerst schwierig. Die Fertigungskosten für die Antriebswellen 2 und 3 und deren Lagerung verteuern das gesamte Walzgerüst.In Figure 2, a sizing mill for pipes according to the prior art is rough shown schematically, in its roll stand 4 on the same level arranged three drive shafts 1, 2, 3 the rollers 5a, 5b, 5c to each other drive shafts inclined by 60 ° are arranged. The rollers 5 a to 5 c are of this type calibrated so that, as can be seen at 6, they form a closed caliber. On the Drive shaft 1, the pin 1 a is connected to the drive, not shown, are the bevel gears 7 a shrunk, which in turn with the bevel gears 8 Combine drive shafts 2 and 3 and thereby at 1 a into drive shaft 1 initiated drive torque, on the drive shafts 2 and 3 of the rollers 5 b and 5 c to distribute. The drive shaft 1 is on both sides of the bevel gears 7 a in radial bearings 9 supported; due to the symmetrical arrangement of the bevel gears 7 a Drive shaft 1 largely free of axial forces. Not so the drive shafts 2 and 3. These waves are due to the toothing of the bevel gears 8 through in the axial direction acting thrust loads significantly, in additional thrust bearings 10th must be included. For this purpose, the drive shafts 2 and 3 with collars 11 provided, on which the thrust bearings 10 are supported, on both sides, because depending on the direction of rotation of the gearbox, the thrust forces vary Directions can work. In addition to the thrust bearings 10 are strong dimensions Provide radial bearing 12 so that, as can be clearly seen from the drawing figure, due to the limited space, a complicated gear train design becomes necessary. The disassembly and assembly of the drive shafts 2 and 3 with their Bearings and the setting of the bevel gears 8 to the bevel gears paired with them 7a is extremely difficult. The manufacturing costs for the drive shafts 2 and 3 and their storage make the entire rolling stand more expensive.

In Figur 1 sind zunächst gleiche Teile gleich bezeichnet. Die Antriebswelle 1 bleibt im wesentlichen unverändert. Lediglich die Kegelräder 7 a sind durch die Kronenräder 13 ersetzt worden, deren Verzahnung entsprechend der mit ihnen kämmenden Ritzeln 14 der Kronenradverzahnung ausgebildet sind. Die Verzahnung der Ritzel 14 ist als Evolventenverzahnung ausgeführt, wobei die Ritzel zylindrisch gefertigt sind und somit keine Schubkräfte in Längsachsrichtung der Antriebswellen 2 und 3 übertragen. Dadurch können die sehr aufwendigen Axiallager 10 an den Antriebswellen 2 und 3 ebenso entfallen, wie die dazu notwendigen Bunde 11 an den Antriebswellen 2 und 3, die nicht nur einen zusätzlichen Fertigungsaufwand darstellten, sondern auch den Ein-und und Ausbau der Radiallager erschwerten. Das gesamte Getriebe des Walzgerüstes baut dadurch einfacher und leichter, ist kostengünstiger herzustellen und leichter zu warten. Die Einstellung der Ritzel 14 auf die Kronenräder 13 ist problemlos mit einfachen Mitteln möglich, weil keine hohe Genauigkeit bei den Einstell-und Montagearbeiten gefordert ist. Wie in der Zeichnung erkennbar, können die Ritzel 14 als separate Bauteile ausgeführt werden, die an die die Walzen 5 b, 5 c tragenden Hohlwellen 15 stirnseitig bei 16 angeschraubt werden können. Beim Stand der Technik gemäß Figur 2 hingegen waren die Hohlwellen 15 mit den Kegelrädern 8 einstückig ausgeführt und entsprechend kompliziert und teuer.In FIG. 1, identical parts are initially identified identically. The drive shaft 1 remains in the essentially unchanged. Only the bevel gears 7 a are through the crown gears 13 have been replaced, the teeth according to the meshing pinions 14th the crown gear teeth are formed. The toothing of the pinion 14 is as Involute teeth executed, the pinions are cylindrical and thus no shear forces are transmitted in the longitudinal axis direction of the drive shafts 2 and 3. As a result, the very complex axial bearings 10 on the drive shafts 2 and 3 are also eliminated, as are the collars 11 required for this on the drive shafts 2 and 3, which represented not only an additional manufacturing effort, but also the input and and expansion of the radial bearings difficult. The entire gear of the mill stand builds easier and lighter, is cheaper to manufacture and easier to build waiting. The setting of the pinion 14 on the crown gears 13 is easy with simple means possible because no high accuracy in setting and Assembly work is required. As can be seen in the drawing, the pinion 14 are designed as separate components that support the rollers 5 b, 5 c Hollow shafts 15 can be screwed on the end face at 16. In the state of the art 2, however, the hollow shafts 15 were in one piece with the bevel gears 8 executed and correspondingly complicated and expensive.

Faßt man die Vorteile der Verwendung der bekannten Kronenradverzahnung gegenüber dem Stand der Technik zusammen, so sind zu nennen:

  • Die Axiallagerung zweier Wellen kann durch den Wegfall axialer Schubkräfte entfallen
  • Einfacher Aufbau der Walzenlagerung durch Verwendung vornehmlich von Radiallagern
  • Aufwendige Einstell- und Paßarbeiten können weitgehend entfallen
  • Die gesamte Montage und Demontage wird vereinfacht
  • Das Walzgerüst und dessen Antrieb werden kostengünstiger.
  • Trennung von Ritzel und Walzenaufnahme
To summarize the advantages of using the known crown gear toothing over the prior art, the following should be mentioned:
  • The axial bearing of two shafts can be eliminated by eliminating axial thrust forces
  • Simple set-up of the roller bearings using primarily radial bearings
  • Extensive adjustment and fitting work can largely be dispensed with
  • The entire assembly and disassembly is simplified
  • The roll stand and its drive will be cheaper.
  • Separation of pinion and roller holder

Claims (3)

  1. A roll stand, in particular for the grooved rolling and sizing of bar-shaped or tubular rolled stock, having three driven roll (5a, 5b, 5c) which form a common groove opening (6), the drive shafts (1, 2, 3) of which, which are connected gear-wise by means of intermeshing gear wheels (13, 14), are arranged in a common plane which extends transversely to the direction of rolling,
    characterised in that
    in each case the two gear wheels (13, 14) of two adjacent drive shafts (1, 2, 3) which mesh together form an angular gear with contrate gear teeth.
  2. A roll stand, in particular for the grooved rolling and sizing of bar-shaped or tubular rolled stock in accordance with Claim 1, characterised in that in each case a cylindrical pinion (14) with involute toothing of a drive shaft (2, 3) meshes with a suitably toothed contrate gear (13) of the adjacent drive shaft (2), which is inclined at 60° to the first drive shaft (1) .
  3. A roll stand, in particular for the grooved rolling and sizing of bar-shaped or tubular rolled stock in accordance with Claims 1 and 2, characterised in that the pinions (14) are connected detachably to the drive shaft (2, 3).
EP96250128A 1995-07-27 1996-06-12 Rolling stand for calibre rolling and sizing Expired - Lifetime EP0755731B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29512713U 1995-07-27
DE29512713U DE29512713U1 (en) 1995-07-27 1995-07-27 Roll stand for caliber and sizing

Publications (2)

Publication Number Publication Date
EP0755731A1 EP0755731A1 (en) 1997-01-29
EP0755731B1 true EP0755731B1 (en) 1999-02-10

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Application Number Title Priority Date Filing Date
EP96250128A Expired - Lifetime EP0755731B1 (en) 1995-07-27 1996-06-12 Rolling stand for calibre rolling and sizing

Country Status (4)

Country Link
EP (1) EP0755731B1 (en)
AT (1) ATE176611T1 (en)
CZ (1) CZ190996A3 (en)
DE (2) DE29512713U1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2705645A1 (en) * 1977-02-08 1978-08-10 Mannesmann Ag THREE-ROLLER HEAD FOR STRETCH-REDUCING ROLLING MILLS
DE3703756A1 (en) * 1987-02-07 1988-08-18 Kocks Technik Rolling stand for rolling rod or tube stock

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DE29512713U1 (en) 1995-11-23
DE59601289D1 (en) 1999-03-25
ATE176611T1 (en) 1999-02-15
CZ190996A3 (en) 1997-02-12
EP0755731A1 (en) 1997-01-29

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