EP0313610A1 - Cage de laminoir. - Google Patents

Cage de laminoir.

Info

Publication number
EP0313610A1
EP0313610A1 EP88903886A EP88903886A EP0313610A1 EP 0313610 A1 EP0313610 A1 EP 0313610A1 EP 88903886 A EP88903886 A EP 88903886A EP 88903886 A EP88903886 A EP 88903886A EP 0313610 A1 EP0313610 A1 EP 0313610A1
Authority
EP
European Patent Office
Prior art keywords
bearing chock
roll
cylinder
ram
rolling mill
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88903886A
Other languages
German (de)
English (en)
Other versions
EP0313610B1 (fr
Inventor
Michael Lister
Robert Marshall
Leonard Guy Taylor
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.)
Davy Mckee Sheffield Ltd
Original Assignee
Davy Mckee Sheffield Ltd
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
Priority claimed from GB878710548A external-priority patent/GB8710548D0/en
Priority claimed from GB888801595A external-priority patent/GB8801595D0/en
Application filed by Davy Mckee Sheffield Ltd filed Critical Davy Mckee Sheffield Ltd
Publication of EP0313610A1 publication Critical patent/EP0313610A1/fr
Application granted granted Critical
Publication of EP0313610B1 publication Critical patent/EP0313610B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B21B31/18—Adjusting or positioning rolls by moving rolls axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B2035/005—Hydraulic drive motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/12—Axial shifting the rolls
    • B21B2269/14—Work rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/14—Couplings, driving spindles, or spindle carriers specially adapted for, or specially arranged in, metal-rolling mills
    • B21B35/148—Spindle carriers or balancers

Definitions

  • This invention relates to a rolling mill stand in which at least one of its pair of work rolls is displaceable to a limited extent in the direction axially of its length. Conveniently, both the work rolls are displaceable axially to a limited extent.
  • a rolling mill stand comprises a pair of spaced apart housings each defining a window; a pair of work rolls each supported by a pair of bearing chock assemblies located in respective housings windows; and characterised in the provision of a pair of rams each secured to one of the housings on opposite sides of the window and having a part displaceable in the direction parallel to the longitudinal axes of the rolls; said displaceable part of each ram having means which is engageable with, and disengageable from, co-operating means on one of said bearing chock assemblies whereby displacement of the parts of the rams, while the means are engaged with the co-operating means on the bearing chock assembly, causes the bearing chock assembly and, hence, the roll to be displaced in the axial direction of the roll.
  • each work roll has a pair of rams each secured to one of the housings on opposite sides of the window and having a part displaceable in the direction parallel to the longitudinal axes of the rolls, said displaceable part of each ram having means which is engageable with, and disengageable from, co ⁇ operating means on one of the bearing chock assemblies of the roll whereby displacement of the parts of the rams, while the means are engaged with the co-operating means on the bearing chock assembly, cause the bearing chock assembly and, hence, the roll to be displaced in the axial direction of the roll.
  • the co-operating means on the bearing chock assembly for the or each ram comprises a plurality of co-operating means arranged successively in the direction parallel to the longitudinal axes of the rolls whereby successive displacement of the parts of the ram, while the means are engaged in turn with the co-operating means, causes the bearing chock assembly and, hence, the roll to be displaced in the axial direction of the roll by a distance which is greater than the stroke of the ram.
  • the co-operating means on the displaceable parts of the rams and on the corresponding bearing chock assembly allow the bearing chock assembly and, hence, the roll which is supported in it to be displaced parallel to the longitudinal axis of the roll.
  • the bearing chock assembly can be moved relative to the corresponding rams as, for example, at the time for changing the rolls.
  • the co-operating means conveniently take the form of latches mounted on the displaceable part of the rams and engageable with slots on the bearing chock assembly.
  • the bearing chock assembly and, hence, the roll which is supported in it can be displaced parallel to the longitudinal axis of the roll.
  • a further displacement of the bearing chock assembly can be made.
  • the latches are mounted on the displaceable cylinders of the rams and means are provided for rotating the cylinders with respect to their pistons so that the latches can be engaged with, and disengaged from, the grooves on the bearing chock assembly.
  • the cylinders of the first and second sets of rams may also include spindle supports which, when the cylinders of the first and second sets of rams are disengaged from the bearing chock assemblies, are positioned so as to support a drive spindle which is disconnected from the adjacent end of the work rolls. In this way, the spindles are supported in the correct location ready to receive the roll ends of the replacement rolls.
  • Figure 1 is a sectional plan view of part of a rolling mill stand in accordance with the present invention, the right-hand side of the drawing showing the apparatus in the roll change position and the left- hand side of the drawing showing the rolling mill stand in its operative position;
  • Figure 2 is a diagrammatic end elevation of part of the apparatus shown in Figure 1;
  • Figure 3 is a sectional plan of an alternative embodiment.
  • a rolling mill stand has a pair of work rolls 1, 3 supported at their ends in bearing chock assemblies 5, 7, respectively.
  • the bearing chock assemblies at one corresponding end of the rolls are located in a window 9 in a housing 11 and the bearing chock assemblies at the other end of the rolls are similarly supported in the window of a mill housing (not shown).
  • the rolls are driven by a pair of spindles 13, one of which is shown in Figure 1.
  • the end of each spindle carries a coupling 15 by which the spindle can be releasably connected to the end of the corresponding work roll.
  • a pair of hydraulically operated rams 17 are mounted on the housing 11 on opposite sides of the longitudinal axis of the upper work roll 1.
  • a similar pair of hydraulic rams 19 are mounted on the same housing 11 on opposite sides of the longitudinal axis of the lower work roll 3.
  • Each of the rams 17, 19 has a cylinder structure 21 with a piston structure 23 within it.
  • the outer end of the piston structure is rigidly secured to the housing 11.
  • each ram is rotatable relative to the longitudinal axis of its piston and it carries a lug 25 and a latch 27.
  • the latch co-operates with a recess or slot 29 formed in an extension 31 of the appropriate bearing chock assembly.
  • the latch 27 can be engaged with, or disengaged from, the recess 29 thereby either connecting the ram and the bearing chock assembly or disconnecting them.
  • displacement of the cylinder structures causes the bearing chock assembly to be displaced in the direction of the roll axis from the position shown on the left-hand side of Figure 1 to that shown on the right-hand side of the figure.
  • Rotation of each cylinder structure is brought about by a rack and pinion device 33 and the two rams on one side of the vertical plane containing the roll axes are connected to one rack 33 and the pair of rams on the opposite side of the vertical plane containing the roll axes are connected to a separate rack 33.
  • racks 33 By displacing the racks 33 in a vertical direction by a piston-cylinder device secured to the upper end of each rack, the cylinder structures can be rotated to engage or disengage their latches 27 in the appropriate recesses 29.
  • each ram also carries a support 35 for a spindle coupling 15.
  • the two spindle supports are arranged in a position where the spindle coupling can readily be supported.
  • the spindle supports 35 are not in a locating position.
  • the racks 33 are operated to rotate the cylinder structures so that the latches of all the rams are engaged in the corresponding recesses.
  • the cylinders are displaced relative to the pistons and the bearing chock assemblies and the rolls are displaced in the direction axially of the rolls.
  • the bearing chock assemblies slide on beams 37.
  • the cylinders When the rolls are to be changed, the cylinders are rotated so as to disengage the latches from the recesses and to position the supports 35 ready to receive the spindle couplings.
  • the couplings are removed from the rolls, the couplings supported on the supports and the rolls are withdrawn from the housings.
  • the cylinder structures are rotated with the aid of racks 33 which engage with toothed parts of the cylinder structures.
  • racks 33 which engage with toothed parts of the cylinder structures.
  • other means could be employed to rotate the cylinder structures.
  • electric or hydraulic motors could be employed either directly or indirectly.
  • each work roll adjacent the housing 101 is the drive side of the mill stand and a drive shaft is removably connected to this end of the work roll.
  • a pair of hydraulically operated rams 113 are mounted on the housing 103.
  • Each ram has a piston 115 which is connected at its outer end to the mill housing and a cylinder 117 surrounds part of the piston.
  • the cylinder moves relative to the piston in a direction parallel to the longitudinal axis of the top roll.
  • the cylinder 117 is rotatable with respect to the piston 115 and an operating rod 119 is connected to one side of the cylinder to enable a limited angular rotation to be applied to the cylinder.
  • This latch co-operates with grooves 123 formed on an extension 125 of the bearing chock assembly at that end of the roll.
  • the extension of the bearing chock assembly extends in the direction parallel to the longitudinal axis of the roll and the grooves are spaced apart in the direction parallel to the longitudinal axis of the roll.
  • the right-hand side of the drawing shows the upper work roll in its normal operating position and the left-hand side of the drawing shows the work roll after it has been axially displaced.
  • the latch 121 of each ram is located in the groove 123 which is furthest from the housing 103.
  • the cylinders 117 are displaced by the full stroke of the rams and the bearing chock assembly is also displaced by an amount equal to the displacement of the rams.
  • the cylinder of each ram is then rotated by the operating rod 119 in order to disengage the latch from the groove.
  • the rams are actuated to allow the cylinder to move relative to the piston.
  • the cylinder is rotated to engage the latch with the adjacent groove 123 and the rams are actuated again in order to displace the bearing chock assembly and, hence, the roll by a further distance equal to the stroke of the rams.
  • the procedure is then repeated and the latches 121 are engaged with the grooves which are closest to the housing 103 and, again, the displacement of the cylinder of each ram causes further axial movement of the roll. Consequently, a series of operations of the rams can produce an axial displacement of the roll by a distance which is greater than the stroke of each ram.
  • the displaced position of the work roll is shown on the left-hand side of Figure 3.
  • Each of the rams may have a linear transducer associated with it so that the exact position of the bearing chock assembly and, hence, the work roll can be determined.
  • the sequential movements of the rams and the co-operating parts on the bearing chock assemblies can be controlled by a computer-based control system.
  • the rams are shown associated with the upper work roll and a similar arrangement of rams co-operating with the bearing chock assembly of the lower work roll could also be provided. All the rams could be operated simultaneously so that the two rolls are displaced together or the rams associated with one of the rolls could be operated independently of the rams associated with the other roll so that the rolls move independently of each other.
  • each bearing chock assembly is supported on a pair of axially slidable blocks and the co ⁇ operating means on the rams co-operate with the slidable blocks to displace the blocks and, hence, the bearing chock assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

Cage de laminoir ayant une paire de cylindres de travail mobiles axialement. Au moins un des cylindres a une paire de vérins fixés au logement du laminoir, dont une partie est mobile dans la direction de la longueur du cylindre. La partie mobile du vérin peut s'enclencher avec l'ensemble d'empoise de support et s'en désenclencher à une extrémité du cylindre, afin de déplacer axialement celui-ci.
EP88903886A 1987-05-05 1988-04-29 Cage de laminoir Expired - Lifetime EP0313610B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8710548 1987-05-05
GB878710548A GB8710548D0 (en) 1987-05-05 1987-05-05 Rolling mill stand
GB888801595A GB8801595D0 (en) 1988-01-25 1988-01-25 Rolling mill stand
GB8801595 1988-01-25

Publications (2)

Publication Number Publication Date
EP0313610A1 true EP0313610A1 (fr) 1989-05-03
EP0313610B1 EP0313610B1 (fr) 1992-07-01

Family

ID=26292203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88903886A Expired - Lifetime EP0313610B1 (fr) 1987-05-05 1988-04-29 Cage de laminoir

Country Status (3)

Country Link
EP (1) EP0313610B1 (fr)
DE (1) DE3872483T2 (fr)
WO (1) WO1988008761A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE162436T1 (de) * 1993-11-29 1998-02-15 Danieli Off Mecc Vorrichtung zum axialen spannen/lösen der einbaustücke der walzen in einem walzgerüst
US5752404A (en) * 1996-12-17 1998-05-19 Tippins Incorporated Roll shifting system for rolling mills
AT408727B (de) * 1999-02-24 2002-02-25 Voest Alpine Ind Anlagen Vorrichtung zum axialen verschieben der arbeitswalzen eines walzgerüstes
CN107649518B (zh) * 2017-11-07 2023-07-18 扬州诚德重工有限公司 一种水平四辊筒件轧机
CN116351884B (zh) * 2023-03-10 2024-07-02 中国机械总院集团北京机电研究所有限公司 轧辊夹紧机构及楔横轧机

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3529364A1 (de) * 1985-08-16 1987-02-19 Schloemann Siemag Ag Antriebsvorrichtung zur axialen verschiebung von walzen eines walzgeruestes
DE8614518U1 (de) * 1986-05-30 1986-07-17 SMS Schloemann-Siemag AG, 4000 Düsseldorf Vorrichtung zum axialen Verschieben der Arbeitswalzen eines Walzgerüstes mit Biegevorrichtungen für diese Walzen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8808761A1 *

Also Published As

Publication number Publication date
WO1988008761A1 (fr) 1988-11-17
DE3872483T2 (de) 1993-02-11
DE3872483D1 (de) 1992-08-06
EP0313610B1 (fr) 1992-07-01

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