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EP0171560B1 - Composite roll - Google Patents

Composite roll Download PDF

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Publication number
EP0171560B1
EP0171560B1 EP85108009A EP85108009A EP0171560B1 EP 0171560 B1 EP0171560 B1 EP 0171560B1 EP 85108009 A EP85108009 A EP 85108009A EP 85108009 A EP85108009 A EP 85108009A EP 0171560 B1 EP0171560 B1 EP 0171560B1
Authority
EP
European Patent Office
Prior art keywords
shaft
roll
collar
onto
bolts
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.)
Expired
Application number
EP85108009A
Other languages
German (de)
French (fr)
Other versions
EP0171560A1 (en
Inventor
Friedrich-Wilhelm Busch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SMS Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to AT85108009T priority Critical patent/ATE36126T1/en
Publication of EP0171560A1 publication Critical patent/EP0171560A1/en
Application granted granted Critical
Publication of EP0171560B1 publication Critical patent/EP0171560B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B21B27/03—Sleeved rolls
    • B21B27/035—Rolls for bars, rods, rounds, tubes, wire or the like

Definitions

  • the invention relates to a composite roller, consisting of a shaft with single or double-sided shaft journals and a shaft collar, against the end face of which a coaxial slide-on, single or multi-part roller shell can be tensioned under axial pressure by fastening elements that can be connected to the shaft collar.
  • Compound rollers with exchangeable roller jackets offer various advantages, such as: B. the possibility of not replacing the entire roller when the rollers are worn, but only replacing the pushed-on jacket or using a specific material for the jacket that is particularly suitable for the surface stresses during the rolling process and another, particularly suitable material for the shaft, or to reduce inventory and repair costs also for caliber rollers.
  • a fastening element is used in the generic design of the composite roller (DE-B-2512894), which is designed as a ring element that contracts or compresses in the radial direction and is conical on the side opposite the roller shell and with an angle of inclination is carried out, which is smaller than the friction angle with respect to the direction of the force which compresses the ring element in the radial direction.
  • a composite roller with a roller jacket compressed in the longitudinal direction regardless of the type of attachment to the shaft is to be created, which makes it possible to get by without the action of heat on the roller jacket or the shaft and to simplify the assembly and disassembly of the composite roller.
  • the invention has for its object to improve such a form of construction of the compound roller so that the advantages of axial locking and torque transmission are retained, instead of the ring elements that can only be produced with considerable technical effort, which must have precisely machined inclined surfaces and the cutting of an annular groove in make it necessary to replace the shaft with correspondingly machined inclination surfaces by simple fastening elements and thereby to generate the torque-transmitting friction pressure between the end faces of the shaft collar and the roller shell without loading the shaft with a preload.
  • roller shell has a plurality of axially parallel through-bores arranged concentrically to the roller axis, through which are drawn threaded bolts which, on the one hand, into the shaft collar and, on the other hand, in an annular disk that acts on the other end face of the roller shell and can also be pushed onto the shaft are screw-anchored.
  • This design of the composite roller allows the roller shell with a sliding fit or a slight press fit to be pushed onto the shaft against the shaft collar and, after the ring washer is then pushed on, the desired axial contact pressure of the end faces of the shaft collar, shell and ring washer with the help of the threaded bolts using torque-limiting bolts Determine screwing fixtures in the desired and specified size.
  • the pull stud bolts can be designed as head bolts and can be screwed with their threaded attachments into threaded blind bores in the annular disk or in a bush which is pushed and shrunk onto the shaft. If two or more roller shells arranged axially next to one another are to be pushed onto a shaft, known spacer bushes can be arranged between the roller shells, which have through-bores for the threaded bolts.
  • the shaft 1 is supported in the bearings 2 and 3 with its shaft journal 1a on both sides.
  • the coupling 3 of the drive unit, not shown, is seated on the shaft journal 1 provided in one side as the drive journal.
  • the jacket 4, provided here with a caliber 4a, has through-bores 4b for the pull-thread bolts 5, which are designed as head bolts and are screwed into blind-thread bores 6a of the annular disc 6 through corresponding through-bores 1d in the shaft collar 1c.
  • the exemplary embodiment according to FIG. 2 differs from that according to FIG. 1 essentially in that two roller shells 7 and 8 are pushed onto the shaft 1, between the facing end faces 7a of which a spacer bushing 9 is arranged, which also has through-bores 9a for the traction thread bolts 5 has.
  • the threaded stud bolts 5, which are also designed as head bolts, are passed through through bores 10a of the annular disk 10 and screwed with their threaded attachments into threaded blind bores 11a of a bushing 11 which is pushed onto the shaft 1 and shrunk on.

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  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

1. Compound roll consisting of a shaft (1) with shaft spigot (1a, 1b) at one or both ends and a shaft collar (1c), against the end surface of which a one-part or multi-part roll shell (4), which is pushable coaxially onto the shaft, is tightenable under axial pressure of fastening elements (5) connectable with the shaft collar (1c), characterised thereby, that the roll shell (4) displays a plurality of passage bores (4b), which are parallel to the axis and arranged concentrically with the roll axis and through which tensile threaded bolts (5) are led, which are threadedly anchored on the one hand in the shaft collar (1c) and on the other hand in an annular plate (6), which acts on the other end face (4c) of the roll shell (4) and is likewise pushable onto the shaft (1).

Description

Die Erfindung bezieht sich auf eine Verbundwalze, bestehend aus einer Welle mit ein- oder beidseitigen Wellenzapfen und einem Wellenbund, gegen dessen Stirnfläche ein koaxial auf die Welle aufschiebbarer, ein- oder mehrteiliger Walzenmantel unter axialem Druck von, mit dem Wellenbund verbindbaren Befestigungselementen spannbar ist.The invention relates to a composite roller, consisting of a shaft with single or double-sided shaft journals and a shaft collar, against the end face of which a coaxial slide-on, single or multi-part roller shell can be tensioned under axial pressure by fastening elements that can be connected to the shaft collar.

Verbundwalzen mit auswechselbarem Walzenmantel bringen verschiedene Vorteile mit sich, so z. B. die Möglichkeit, bei abgenutzten Walzen nicht die komplette Walze, sondern nur den aufgeschobenen Mantel auszuwechseln oder für den Mantel einen bestimmten, für die Oberflächenbeanspruchungen beim Walzvorgang besonders geeigneten Werkstoff zu verwenden und für die Welle einen anderen, für diese besonders geeigneten Werkstoff, oder auch bei Kaliberwalzen die Vorratshaltung und die Reparaturkosten herabzusetzen.Compound rollers with exchangeable roller jackets offer various advantages, such as: B. the possibility of not replacing the entire roller when the rollers are worn, but only replacing the pushed-on jacket or using a specific material for the jacket that is particularly suitable for the surface stresses during the rolling process and another, particularly suitable material for the shaft, or to reduce inventory and repair costs also for caliber rollers.

Es sind zahlreiche Vorschläge für die Ausbildung solcher Verbundwalzen bekannt geworden, insbesondere Vorschläge, die sich mit den Forderungen nach der Sicherung des Walzenmantels gegen axiale Verschiebung und der Übertragung des Drehmomentes von der Welle auf den Walzenmantel befassen. Bei einer dieser Ausbildungsformen werden der Mantel und die Welle über Befestigungsmittel ausschliesslich durch Druckspannungen zwischen planparallelen Stirnflächen in drehfester Verbindung gehalten. Diese Druckspannungen erzeugt die beim Herstellen der Verbindung elastisch vorgespannte Walzspindel (DE-C-1286490). Ausgehend von diesem Vorschlag wird bei der gattungsgemässen Ausbildung der Verbundwalze (DE-B-2512894) ein Befestigungselement verwendet, das als ein sich in radialer Richtung zusammenziehendes oder in dieser Richtung zusammenpressbares Ringelement ausgebildet, das auf der dem Walzenmantel gegenüberliegenden Seite konisch und mit einem Neigungswinkel ausgeführt ist, der in bezug auf die Richtung der Kraft, die das Ringelement in radialer Richtung zusammendrückt, kleiner ist als der Reibungswinkel. Mit dieser Ausbildung soll eine Verbundwalze mit in Längsrichtung unabhängig von der Art der Anbringung auf der Welle zusammengedrücktem Walzenmantel geschaffen werden, die es ermöglicht, ohne Wärmeeinwirkung auf den Walzenmantel oder die Welle auszukommen und die Montage und das Auseinandernehmen der Verbundwalze zu vereinfachen.Numerous proposals for the formation of such composite rollers have become known, in particular proposals which deal with the requirements for securing the roller shell against axial displacement and the transmission of the torque from the shaft to the roller shell. In one of these forms of construction, the casing and the shaft are held in a rotationally fixed connection by means of fastening means exclusively by compressive stresses between plane-parallel end faces. These compressive stresses are generated by the roll spindle which is elastically preloaded when the connection is made (DE-C-1286490). On the basis of this proposal, a fastening element is used in the generic design of the composite roller (DE-B-2512894), which is designed as a ring element that contracts or compresses in the radial direction and is conical on the side opposite the roller shell and with an angle of inclination is carried out, which is smaller than the friction angle with respect to the direction of the force which compresses the ring element in the radial direction. With this design, a composite roller with a roller jacket compressed in the longitudinal direction regardless of the type of attachment to the shaft is to be created, which makes it possible to get by without the action of heat on the roller jacket or the shaft and to simplify the assembly and disassembly of the composite roller.

Der Erfindung liegt die Aufgabe zugrunde, eine solche Ausbildungsform der Verbundwalze so zu verbessern, dass die Vorteile der axialen Sicherung und der Drehmomentübertragung erhalten bleiben, anstelle der nur mit erheblichem technischem Aufwand herzustellenden Ringelemente, die genau bearbeitete Neigungsflächen aufweisen müssen und das Einschneiden einer Ringnut in die Welle mit entsprechend bearbeiteten Neigungsflächen notwendig machen durch einfache Befestigungselemente zu ersetzen und dabei den das Drehmoment übertragenden Reibungsdruck zwischen den Stirnflächen des Wellenbundes und des Walzenmantels ohne Belastung der Welle mit einer Vorspannung zu erzeugen.The invention has for its object to improve such a form of construction of the compound roller so that the advantages of axial locking and torque transmission are retained, instead of the ring elements that can only be produced with considerable technical effort, which must have precisely machined inclined surfaces and the cutting of an annular groove in make it necessary to replace the shaft with correspondingly machined inclination surfaces by simple fastening elements and thereby to generate the torque-transmitting friction pressure between the end faces of the shaft collar and the roller shell without loading the shaft with a preload.

Diese Aufgabe wird dadurch gelöst, dass der Walzenmantel eine Mehrzahl von konzentrisch zur Walzenachse angeordneten, achsparallelen Durchgangsbohrungen aufweist, durch die Zuggewindebolzen geführt sind, die einerseits in den Wellenbund und andererseits in einer, die andere Stirnseite des Walzenmantels beaufschlagenden, ebenfalls auf die Welle aufschiebbaren Ringscheibe schraubverankert sind.This object is achieved in that the roller shell has a plurality of axially parallel through-bores arranged concentrically to the roller axis, through which are drawn threaded bolts which, on the one hand, into the shaft collar and, on the other hand, in an annular disk that acts on the other end face of the roller shell and can also be pushed onto the shaft are screw-anchored.

Diese Ausbildung der Verbundwalze erlaubt es, den Walzenmantel mit Schiebesitz oder auch leichtem Presssitz auf die Welle gegen den Wellenbund zu schieben und nach anschliessendem Aufschieben der Ringscheibe den gewünschten axialen Anpressdruck der aufeinanderliegenden Stirnflächen von Wellenbund, Mantel und Ringscheibe mit Hilfe der Zuggewindebolzen unter Anwendung von drehmomentbegrenzenden Schraubmitteln in der gewünschten und vorgegebenen Grösse festzulegen.This design of the composite roller allows the roller shell with a sliding fit or a slight press fit to be pushed onto the shaft against the shaft collar and, after the ring washer is then pushed on, the desired axial contact pressure of the end faces of the shaft collar, shell and ring washer with the help of the threaded bolts using torque-limiting bolts Determine screwing fixtures in the desired and specified size.

Wie die Erfindung in einer Weiterbildung vorsieht, können die Zuggewindebolzen als Kopfbolzen ausgebildet und mit ihren Gewindeansätzen in Gewindesackbohrungen der Ringscheibe bzw. einer auf die Welle aufgeschobenen und aufgeschrumpften Buchse eingeschraubt werden. Sollen zwei oder mehr axial nebeneinander angeordnete Walzenmäntel auf eine Welle aufgeschoben werden, können zwischen den Walzenmänteln an sich bekannte Abstandsbuchsen angeordnet sein, die Durchgangsbohrungen für die Zuggewindebolzen aufweisen.As the invention provides in a further development, the pull stud bolts can be designed as head bolts and can be screwed with their threaded attachments into threaded blind bores in the annular disk or in a bush which is pushed and shrunk onto the shaft. If two or more roller shells arranged axially next to one another are to be pushed onto a shaft, known spacer bushes can be arranged between the roller shells, which have through-bores for the threaded bolts.

Die Erfindung wird anhand der in der Zeichnung dargestellten Ausführungsbeispiele näher erläutert. In der Zeichnung zeigen:

  • Fig. 1 eine Verbundwalze mit einem Walzenmantel und den Wellenlagern im Axialschnitt, und
  • Fig. 2 eine andere Ausbildung mit zwei Walzenmänteln ebenfalls im Axialschnitt.
The invention is explained in more detail using the exemplary embodiments shown in the drawing. The drawing shows:
  • Fig. 1 is a composite roller with a roller shell and the shaft bearings in axial section, and
  • Fig. 2 shows another design with two roller shells also in axial section.

Wie aus Fig. 1 zu ersehen, ist die Welle 1 mit ihren beidseitigen Wellenzapfen 1a in den Lagern 2 und 3 gelagert. Auf dem in einer Seite vorgesehenen Wellenzapfen 1 als Antriebszapfen sitzt die Kupplung 3 des nicht dargestellten Antriebsaggregats. Der hier mit einem Kaliber 4a versehene Mantel 4 weist Durchtrittsbohrungen 4b für die Zuggewindebolzen 5 auf, die als Kopfbolzen ausgebildet, durch entsprechende Durchtrittsbohrungen 1d im Wellenbund 1c hindurchgeführt in Sackgewindebohrungen 6a der Ringscheibe 6 eingeschraubt sind. Durch den von den Zuggewindebolzen 5 erzeugten Zug zwischen Wellenbund 1c c und Ringscheibe 6 wird der Anpressdruck zwischen den Stirnflächen 4c der Welle 1 und den Stirnflächen 1e des Wellenbundes 1c und der Stirnfläche 6b der Ringscheibe 6 erzeugt, der wie der praktische Betrieb inzwischen erwiesen hat, ausreicht, das für den Walzbetrieb notwendige Drehmoment von der Welle 1 auf den Walzenmantel 4 zu übertragen. Versuche mit zwischen Wellenbund 1c und Walzenmantel 4 im Bereich der aufeinanderliegenden Stirnflächen 1e und 4c eingesetzte achsparallele Passstifte haben bewiesen, dass praktisch keine Drehverschiebung zwischen Wellenbund 1c und Walzmantel 4 stattfindet.As can be seen from FIG. 1, the shaft 1 is supported in the bearings 2 and 3 with its shaft journal 1a on both sides. The coupling 3 of the drive unit, not shown, is seated on the shaft journal 1 provided in one side as the drive journal. The jacket 4, provided here with a caliber 4a, has through-bores 4b for the pull-thread bolts 5, which are designed as head bolts and are screwed into blind-thread bores 6a of the annular disc 6 through corresponding through-bores 1d in the shaft collar 1c. The tension between the shaft collar 1c c and the ring disk 6 generated by the tension threaded bolt 5 generates the contact pressure between the end faces 4c of the shaft 1 and the end faces 1e of the shaft collar 1c and the end face 6b of the ring disk 6, which, as practical operation has now proven, is sufficient to transmit the torque required for the rolling operation from the shaft 1 to the roll shell 4. Experiments with between shaft collar 1c and roller shell 4 in the area The axially parallel dowel pins of the superimposed end faces 1e and 4c have proven that there is practically no rotational displacement between the shaft collar 1c and the roll jacket 4.

Das Ausführungsbeispiel nach Fig. 2 unterscheidet sich von dem nach Fig. 1 im wesentlichen dadurch, dass auf die Welle 1 zwei Walzenmäntel 7 und 8 aufgeschoben sind, zwischen deren einander zugewandten Stirnflächen 7a eine Abstandsbuchse 9 angeordnet ist, die ebenfalls Durchtrittsbohrungen 9a für die Zuggewindebolzen 5 aufweist. Die ebenfalls als Kopfbolzen ausgebildeten Zuggewindebolzen 5 sind hier durch Durchtrittsbohrungen 10a der Ringscheibe 10 hindurchgeführt und mit ihren Gewindeansätzen in Gewindesackbohrungen 11a einer Buchse 11 eingeschraubt, die auf die Welle 1 aufgeschoben und aufgeschrumpft ist.The exemplary embodiment according to FIG. 2 differs from that according to FIG. 1 essentially in that two roller shells 7 and 8 are pushed onto the shaft 1, between the facing end faces 7a of which a spacer bushing 9 is arranged, which also has through-bores 9a for the traction thread bolts 5 has. The threaded stud bolts 5, which are also designed as head bolts, are passed through through bores 10a of the annular disk 10 and screwed with their threaded attachments into threaded blind bores 11a of a bushing 11 which is pushed onto the shaft 1 and shrunk on.

Claims (3)

1. Compound roll consisting of a shaft (1) with shaft spigot (1a, 1b) at one or both ends and a shaft collar (1 c), against the end surface of which a one-part or multi-part roll shell (4), which is pushable coaxially onto the shaft, is tightenable under axial pressure of fastening elements (5) connectable with the shaft collar (1c), characterised thereby, that the roll shell (4) displays a plurality of passage bores (4b), which are parallel to the axis and arranged concentrically with the roll axis and through which tensile threaded bolts (5) are led, which are threadedly anchored on the one hand in the shaft collar (1c) and on the other hand in an annular plate (6), which acts on the other end face (4c) of the roll shell (4) and is likewise pushable onto the shaft (1).
2. Compound roll according to claim 1, characterised thereby, that the tensile threaded bolts (5) are constructed as headed bolts and screwed by their threaded portions into threaded blind bores (6a or 11a) either of the annular plate (6) or of a bush (11) pushed and shrunk onto the shaft (1).
3. Compound roll according to the claim 1 and/ or 2 with two or more roll shells arranged axially one beside the other, characterised thereby, that in themselves known spacer bushes (9), which display passage bores (9a) for the tensile threaded bolts (5), are arranged between the roll shells (7 and 8).
EP85108009A 1984-07-25 1985-06-28 Composite roll Expired EP0171560B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85108009T ATE36126T1 (en) 1984-07-25 1985-06-28 COMPOSITE ROLLER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843427420 DE3427420A1 (en) 1984-07-25 1984-07-25 COMPOSITE ROLLER
DE3427420 1984-07-25

Publications (2)

Publication Number Publication Date
EP0171560A1 EP0171560A1 (en) 1986-02-19
EP0171560B1 true EP0171560B1 (en) 1988-08-03

Family

ID=6241540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85108009A Expired EP0171560B1 (en) 1984-07-25 1985-06-28 Composite roll

Country Status (3)

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EP (1) EP0171560B1 (en)
AT (1) ATE36126T1 (en)
DE (2) DE3427420A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19832520B4 (en) * 1998-07-20 2005-03-24 Teller, Bernd Compacting unit for a powder compacting machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE487909C (en) * 1929-12-12 Th Groke Akt Ges Roller for shredding devices, the jacket of which consists of rings sitting on a cone-shaped core
DE1602096A1 (en) * 1967-03-25 1970-04-02 Kocks Gmbh Friedrich Multi-frame universal rolling mill

Also Published As

Publication number Publication date
EP0171560A1 (en) 1986-02-19
DE3427420A1 (en) 1986-01-30
ATE36126T1 (en) 1988-08-15
DE3564083D1 (en) 1988-09-08

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