EP0042879B1 - Rolling mill stand - Google Patents

Rolling mill stand Download PDF

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Publication number
EP0042879B1
EP0042879B1 EP80103609A EP80103609A EP0042879B1 EP 0042879 B1 EP0042879 B1 EP 0042879B1 EP 80103609 A EP80103609 A EP 80103609A EP 80103609 A EP80103609 A EP 80103609A EP 0042879 B1 EP0042879 B1 EP 0042879B1
Authority
EP
European Patent Office
Prior art keywords
housing
roll
eccentric bushes
eccentric
bushes
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
EP80103609A
Other languages
German (de)
French (fr)
Other versions
EP0042879A1 (en
Inventor
Horst-Dieter Hirschfelder
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.)
Fried Krupp AG
Original Assignee
Fried Krupp 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 Fried Krupp AG filed Critical Fried Krupp AG
Priority to EP80103609A priority Critical patent/EP0042879B1/en
Priority to DE8080103609T priority patent/DE3067932D1/en
Priority to ES502600A priority patent/ES8203660A1/en
Priority to JP9682081A priority patent/JPS5731403A/en
Publication of EP0042879A1 publication Critical patent/EP0042879A1/en
Application granted granted Critical
Publication of EP0042879B1 publication Critical patent/EP0042879B1/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
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • B21B31/26—Adjusting eccentrically-mounted roll bearings
    • 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
    • B21B13/005—Cantilevered roll stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts

Definitions

  • the invention relates to a roll stand according to the preamble of claim 1 and is based on the prior art given by DE-A-2 304 268.
  • Roll stands of this type are intended to permit uninterrupted operation as far as possible. Therefore, the replacement of wear parts must be carried out in the shortest possible time.
  • the exchange units should be as small as possible, i. H. limit yourself to the wearing parts in order to keep the operating and maintenance costs as well as the effort for the spare parts storage low.
  • Various constructions have already become known for this purpose (DE-A-742 990, DE-A-2 304 268, US-A-3 336 781), which provide an easily releasable connection between individual parts of such a roll stand and rapid replacement enable these parts. In this case, however, relatively large housing parts, including functional parts that are subject to only slight wear, are still replaced. This then requires complex assembly, sealing and alignment work.
  • the eccentric bushings are provided on their circumference with a groove into which a wedge, which is common to the eccentric bushings and is mounted in the housing, can be inserted by means of a spindle, which axially fixes the eccentric bushings and, when pulled out, allows the eccentric bushings to be removed.
  • a housing 1 with oil bores 2 is closed at its end on the roll side with an end plate 3.
  • Two roller shafts 5 with their end 4 intended for receiving roller disks 4 passing through the end plate 3 are mounted in eccentric bushings 6, which in turn are rotatably mounted in the housing 1.
  • the roller shafts 5 carry at their other end gears 7, the external teeth of which engage with the internal toothing of wheels 8 mounted in the housing 1 concentrically with the eccentric bushes 6, regardless of the position of the eccentric bushes 6.
  • the wheels 8 are seated on intermediate shafts mounted in the housing 1 9, which are connected to one another via spur gears 10. One of the two intermediate shafts 9 is connected to the roller drive.
  • the roll adjustment is carried out symmetrically by rotating the eccentric bushes 6 in opposite directions via an adjusting spindle 11 with two worm gears 12 and two adjusting wheels 13.
  • Each of the two eccentric bushes 6 is provided with a circumferential groove 14 into which a common wedge 15 engages, which is slidably mounted in the housing 1 via elongated holes 16 and pins 17.
  • the eccentric bushes 6 are fixed in the axial direction by the wedge 15 in the housing 1.
  • the wedge 15 can be pulled out of the grooves 15 by means of a spindle 18. He then releases the eccentric bushes 6 so that they can be individually and collectively pulled out and exchanged on the front side from the housing 1, in each case together with the roller shaft bearings, the roller shafts 5 and the gear wheels 7.
  • the opening in the end plate 3 need only be as large as the front bearing diameter D of the eccentric bushes 6, since the remaining parts of the exchange units, i.e. the eccentric bushes 6 themselves, the ring gear 19 with which the adjusting wheels 13 mesh, and also the toothed wheels 7 are dimensioned such that they have no larger diameter or projection.

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

Description

Die Erfindung bezieht sich auf ein Walzgerüst gemäß Oberbegriff von Anspruch 1 und geht von dem durch die DE-A-2 304 268 gegebenen Stand der Technik aus.The invention relates to a roll stand according to the preamble of claim 1 and is based on the prior art given by DE-A-2 304 268.

Derartige Walzgerüste sollen eine soweit wie möglich ununterbrochene Betriebsweise erlauben. Deshalb muß das Auswechseln von Verschleißteilen in kürzester Zeit durchgeführt werden können. Andererseits sollen die Auswechseleinheiten möglichst klein sein, d. h. sich auf die Verschleißteile beschränken, um die Betriebs-und Wartungskosten sowie den Aufwand für die Ersatzteillagerung niedrig zu halten. Für diesen Zweck sind bereits verschiedene Konstruktionen bekannt geworden (DE-A-742 990, DE-A-2 304 268, US-A-3 336 781), die eine leicht lösbare Verbindung zwischen einzelnen Teilen eines solchen Walzgerüstes vorsehen und das schnelle Auswechseln dieser Teile ermöglichen. Hierbei werden jedoch immer noch verhältnismäßig umfangreiche Gehäuseteile unter Einschluß von Funktionsteilen, die nur geringem Verschleiß unterliegen, ausgewechselt. Das erfordert dann anschließend aufwendige Montage-, Abdicht-und Ausrichtarbeiten. Es ist Aufgabe gestellt bei einem Walzgerüst der Gattung einen axialen Aus-und Einbau der Walzwellen samt Exzenterbuchsen durch die stirnseitige Öffnung des Gehäuses auch dann zu ermöglichen, wenn eine gemeinsame Anstellung der Walzwellen über innerhalb des Gehäuses angeordnete Außen-Zahnkränze der Exzenterbuchsen erfolgen soll.Roll stands of this type are intended to permit uninterrupted operation as far as possible. Therefore, the replacement of wear parts must be carried out in the shortest possible time. On the other hand, the exchange units should be as small as possible, i. H. limit yourself to the wearing parts in order to keep the operating and maintenance costs as well as the effort for the spare parts storage low. Various constructions have already become known for this purpose (DE-A-742 990, DE-A-2 304 268, US-A-3 336 781), which provide an easily releasable connection between individual parts of such a roll stand and rapid replacement enable these parts. In this case, however, relatively large housing parts, including functional parts that are subject to only slight wear, are still replaced. This then requires complex assembly, sealing and alignment work. It is the object of a roll stand of the type to enable axial removal and installation of the rolling shafts including eccentric bushings through the front opening of the housing even when the rolling shafts are to be adjusted together via external toothed rings of the eccentric bushings arranged within the housing.

Diese Aufgabe wird bei einem Walzgerüst der eingangs genannten Art durch die Kennzeichenmerkmale von Anspruch 1 gelöst. Alle mit dem Gehäuse verbundenen Versorgungsleitungen, Walzarmaturen und Walzführungen können beibehalten werden und bleiben beim Wechselvorgang unverändert. Die Lagerung und Beschaffung der Wechselteile sowie der Wechsel selbst sind erheblich kostengünstiger.This object is achieved in a roll stand of the type mentioned at the outset by the characterizing features of claim 1. All supply lines, roller fittings and roller guides connected to the housing can be retained and remain unchanged when changing. The storage and procurement of the change parts and the change itself are considerably cheaper.

Es ist darauf hinzuweisen, daß der Einzelausbau von Walzwellen bei gattungsfremden Druckschriften im Grundsatz bekannt ist vgl. DE-A-2 247 622, FR-A-2 044 472 u nd US-A-3 611 531. ohne aber das anmeldungsgemäße Problem bzw. dessen Lösung nahezulegen.It should be noted that the individual expansion of rolling shafts in non-generic publications is known in principle cf. DE-A-2 247 622, FR-A-2 044 472 and US-A-3 611 531. but without suggesting the problem according to the application or its solution.

In Ausgestaltung der Erfindung sind die Exzenterbuchsen auf ihrem Umfang mit einer Nut versehen, in die ein für die Exzenterbuchsen gemeinsamer, im Gehäuse gelagerter Keil mittels einer Spindel einschiebbar ist, der die Exzenterbuchsen axial festlegt und herausgezogen den Ausbau der Exzenterbuchsen erlaubt. Diese Ausführung ergibt eine sehr einfache und betriebssichere Verbindung der Auswechseleinheiten mit dem Gehäuse, gewährleistet aber gleichzeitig ein Lösen dieser Verbindung mit dem geringstmöglichen Aufwand.In an embodiment of the invention, the eccentric bushings are provided on their circumference with a groove into which a wedge, which is common to the eccentric bushings and is mounted in the housing, can be inserted by means of a spindle, which axially fixes the eccentric bushings and, when pulled out, allows the eccentric bushings to be removed. This design results in a very simple and reliable connection of the exchange units to the housing, but at the same time ensures that this connection is released with the least possible effort.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt, und zwar in

  • Figur 1 im Längsschnitt durch ein Walzgerüst, in
  • Figur 2 im Schnitt nach der Linie 11-11 in Fig. 1, in
  • Figur 3 im Schnitt nach der Linie 111-111 in Fig. 1 und in
  • Figur 4 im Schnitt nach der Linie IV-IV in Fig. 3.
In the drawing, an embodiment of the invention is shown, namely in
  • Figure 1 in longitudinal section through a roll stand, in
  • Figure 2 in section along the line 11-11 in Fig. 1, in
  • Figure 3 in section along the line 111-111 in Fig. 1 and in
  • Figure 4 in section along the line IV-IV in Fig. 3rd

Ein Gehäuse 1 mit Ölbohrungen 2 ist an seinem walzenseitigen Ende mit einer Stirnplatte 3 verschlossen. Zwei mit ihren für die Aufnahme von Walzscheiben bestimmten Ende 4 durch die Stirnplatte 3 hindurchtretende Walzwellen 5 sind in Exzenterbuchsen 6 gelagert, die ihrerseits im Gehäuse 1 drehbar gelagert sind. Die Walzwellen 5 tragen an ihrem anderen Ende Zahnräder 7, deren Außenverzahnungen mit der Innenverzahnung von im Gehäuse 1 konzentrisch zu den Exzenterbuchsen 6 gelagerten Rädern 8 in Eingriff stehen, unabhängig von der Stellung der Exzenterbuchsen 6. Die Räder 8 sitzen auf im Gehäuse 1 gelagerten Zwischenwellen 9, die über Stirnräder 10 miteinander antriebsverbunden sind. Eine der beiden Zwischenwellen 9 ist mit dem Walzenantrieb verbunden.A housing 1 with oil bores 2 is closed at its end on the roll side with an end plate 3. Two roller shafts 5 with their end 4 intended for receiving roller disks 4 passing through the end plate 3 are mounted in eccentric bushings 6, which in turn are rotatably mounted in the housing 1. The roller shafts 5 carry at their other end gears 7, the external teeth of which engage with the internal toothing of wheels 8 mounted in the housing 1 concentrically with the eccentric bushes 6, regardless of the position of the eccentric bushes 6. The wheels 8 are seated on intermediate shafts mounted in the housing 1 9, which are connected to one another via spur gears 10. One of the two intermediate shafts 9 is connected to the roller drive.

Die Walzenanstellung erfolgt symmetrisch durch gegenläufiges Drehen der Exzenterbuchsen 6 über eine Anstellspindel 11 mit zwei Schneckenverzahnungen 12 und zwei Stellrädern 13.The roll adjustment is carried out symmetrically by rotating the eccentric bushes 6 in opposite directions via an adjusting spindle 11 with two worm gears 12 and two adjusting wheels 13.

Jede der beiden Exzenterbuchsen 6 ist mit einer umlaufenden Nut 14 versehen, in die ein gemeinsamer Keil 15 eingreift, der über Langlöcher 16 und Stifte 17 im Gehäuse 1 verschieblich gelagert ist. Die Exzenterbuchsen 6 sind durch den Keil 15 im Gehäuse 1 in axialer Richtung festgelegt. Der Keil 15 kann mittels einer Spindel 18 aus den Nuten 15 herausgezogen werden. Er gibt dann die Exzenterbuchsen 6 frei, so daß sie einzeln oder gemeinsam stirnseitig aus dem Gehäuse 1 herausgezogen und gewechselt werden können, und zwar jeweils zusammen mit den Walzwelllenlagern, den Walzwellen 5 und den Zahnrädern 7.Each of the two eccentric bushes 6 is provided with a circumferential groove 14 into which a common wedge 15 engages, which is slidably mounted in the housing 1 via elongated holes 16 and pins 17. The eccentric bushes 6 are fixed in the axial direction by the wedge 15 in the housing 1. The wedge 15 can be pulled out of the grooves 15 by means of a spindle 18. He then releases the eccentric bushes 6 so that they can be individually and collectively pulled out and exchanged on the front side from the housing 1, in each case together with the roller shaft bearings, the roller shafts 5 and the gear wheels 7.

Die Öffnung in der Stirnplatte 3 braucht nur so groß wie der vordere Lagerdurchmesser D der Exzenterbuchsen 6 zu sein, da die übrigen Teile der Wechseleinheiten, also die Exzenterbuchsen 6 selbst, der Zahnkranz 19, mit dem die Stellräder 13 kämmen, und auch die Zahnräder 7 so bemessen sind, daß sie keinen größeren Durchmesser bzw. keine größere Ausladung haben.The opening in the end plate 3 need only be as large as the front bearing diameter D of the eccentric bushes 6, since the remaining parts of the exchange units, i.e. the eccentric bushes 6 themselves, the ring gear 19 with which the adjusting wheels 13 mesh, and also the toothed wheels 7 are dimensioned such that they have no larger diameter or projection.

Claims (2)

1. Roll stand with rolls adjustable towards one another and mounted in overhung manner, the roll shafts (5, 5) of which are mounted in eccentric bushes (6, 6) rotatably arranged in a housing (1) and are connected for drive through gear wheels (7, 8) at their ends opposite to the rolls with intermediate shafts (9, 9) likewise mounted in the housing (1), in which the eccentric bushes (6, 6) together with the rolls, the roll shafts, the roll shaft bearings and the gear wheels are easily disengageably inserted into the housing from its end, and in which the diameters of the gear wheels (7, 8) and of the eccentric bushes (6, 6) are made smaller than the roll end of the housing (1), characterised in that in the case of a rotary drive for the eccentric bushes (6, 6) through toothed rims (19, 19) arranged on these their diameters too are made smaller than the roll end of the housing (1) and each eccentric bush (6) with pertinent roll, roll shaft (5), roll shaft mounting, gar wheel (7) and toothed rim (19) can be installed and removed individually, in each case through an end opening of the housing, provided in the stand (1) and dimensioned in accordance with the eccentric bush, the gear wheel and the toothed rim.
2. Roll stand according to Claim 1, characterised in that the eccentric bushes (6) are provided on their circumference with a groove (14) into which a key (15), common to the eccentric bushes (6) and mounted in the housing, can be pushed by means of a spindle (18), which key makes the eccentric bushes (6) fast axially and when withdrawn permits the removal of the eccentric bushes (6).
EP80103609A 1980-06-26 1980-06-26 Rolling mill stand Expired EP0042879B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP80103609A EP0042879B1 (en) 1980-06-26 1980-06-26 Rolling mill stand
DE8080103609T DE3067932D1 (en) 1980-06-26 1980-06-26 Rolling mill stand
ES502600A ES8203660A1 (en) 1980-06-26 1981-05-29 Rolling mill stand.
JP9682081A JPS5731403A (en) 1980-06-26 1981-06-24 Roll stand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80103609A EP0042879B1 (en) 1980-06-26 1980-06-26 Rolling mill stand

Publications (2)

Publication Number Publication Date
EP0042879A1 EP0042879A1 (en) 1982-01-06
EP0042879B1 true EP0042879B1 (en) 1984-05-23

Family

ID=8186706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103609A Expired EP0042879B1 (en) 1980-06-26 1980-06-26 Rolling mill stand

Country Status (4)

Country Link
EP (1) EP0042879B1 (en)
JP (1) JPS5731403A (en)
DE (1) DE3067932D1 (en)
ES (1) ES8203660A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3574463D1 (en) * 1984-04-28 1990-01-04 Schloemann Siemag Ag ROLLING MILLS.
DE3439269A1 (en) * 1984-10-26 1986-04-30 Fried. Krupp Gmbh, 4300 Essen ROLLING MILL FOR AN UPstream, CONTINUOUSLY WORKING CASTING MACHINE FOR WIRE MANUFACTURING
JPH0594083U (en) * 1991-03-19 1993-12-21 悦三 北田 A motorcycle seat cover that doubles as a backrest and luggage carrier
SE503911C2 (en) * 1993-03-15 1996-09-30 Morgaardshammar Ab Device for clamping a roll housing to a roll saving unit
US5678931A (en) * 1995-10-17 1997-10-21 Morgan Construction Company Hydrodynamically lubricated eccentrically adjustable bearing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348403A (en) * 1964-11-02 1967-10-24 Mckay Machine Co Roll pass for tubing or the like

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE736879C (en) * 1940-09-28 1943-06-30 Demag Ag Sizing or reducing mill
US3336781A (en) * 1964-08-24 1967-08-22 Morgan Construction Co Rolling mill
GB1240656A (en) * 1967-11-15 1971-07-28 British Iron Steel Research Mill roll mountings
FR2044472A5 (en) * 1969-05-22 1971-02-19 Loire Atel Forges Rolling mill stand for either horizontal - or vertical posn
DE2103734A1 (en) * 1971-01-27 1972-08-17 Fried. Krupp Gmbh, 4300 Essen Roll stand with overhung adjustable rolls
DD96645A1 (en) * 1972-05-17 1973-04-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348403A (en) * 1964-11-02 1967-10-24 Mckay Machine Co Roll pass for tubing or the like

Also Published As

Publication number Publication date
ES502600A0 (en) 1982-04-16
EP0042879A1 (en) 1982-01-06
JPS5731403A (en) 1982-02-19
ES8203660A1 (en) 1982-04-16
DE3067932D1 (en) 1984-06-28

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