EP0794021B1 - Dispositif pour la rectification in situ des rouleaux de cages de laminoir à chaud pour bandes - Google Patents

Dispositif pour la rectification in situ des rouleaux de cages de laminoir à chaud pour bandes Download PDF

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Publication number
EP0794021B1
EP0794021B1 EP97250044A EP97250044A EP0794021B1 EP 0794021 B1 EP0794021 B1 EP 0794021B1 EP 97250044 A EP97250044 A EP 97250044A EP 97250044 A EP97250044 A EP 97250044A EP 0794021 B1 EP0794021 B1 EP 0794021B1
Authority
EP
European Patent Office
Prior art keywords
grinding
rolls
hot strip
grinding shaft
tailstock sleeve
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 - Lifetime
Application number
EP97250044A
Other languages
German (de)
English (en)
Other versions
EP0794021A1 (fr
Inventor
Dieter Figge
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 Demag 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 Demag AG filed Critical SMS Demag AG
Publication of EP0794021A1 publication Critical patent/EP0794021A1/fr
Application granted granted Critical
Publication of EP0794021B1 publication Critical patent/EP0794021B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21B28/00—Maintaining rolls or rolling equipment in effective condition
    • B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
    • B21B28/04—Maintaining rolls in effective condition, e.g. reconditioning while in use, e.g. polishing or grinding while the rolls are in their stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
    • B24B5/045—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally with the grinding wheel axis perpendicular to the workpiece axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/16—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged
    • B24B5/167—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged for rolls with large curvature radius, e.g. mill rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/363—Single-purpose machines or devices for grinding surfaces of revolution in situ

Definitions

  • the invention relates to a device for regrinding in Hot strip mill stands built-in rolls by means of pot-shaped rotating Grinding tools that are oscillating parallel to the roller axis, which Grinding tool at the end of a rotary drive that can be moved transversely to the roller Grinding shaft is attached, which is coaxial in an axially displaceable tubular quill guided and at its opposite end with an indirect on the quill supporting displacement drive is connected.
  • the axial displacement of the grinding shaft serves to compensate for wear on the cup wheel (approx. 70 mm); the Axial displacement of the quill serves to compensate for the roll rotation (approx. 80 mm).
  • a generic device is provided for regrinding the rolls installed in hot strip mill stands, in particular the work rolls in four-high roll stands.
  • the contour of the roll can be reworked in the installed stand in the roll stand with several rotating cup-shaped grinding tools arranged next to one another over the bale length of the roll to be ground, which, together with the tool holder receiving them, can be moved in an oscillating manner parallel to the roll axis and adjusted transversely to this independently of the pressure.
  • each grinding tool is separately driven in a speed-controllable manner and is arranged on a quill which is axially displaceable in the tool carrier and is connected to drive elements for the cup-shaped grinding tool.
  • the known solution proposes, in order to position the grinding tools against the roller, to move the quills on which the tools are fastened with the aid of piston-cylinder units in the longitudinal direction and thereby to control the tool.
  • the piston-cylinder units are pressure and displacement-controlled so that every grinding position and pressure can be moved.
  • the sleeves can be moved back into a position in which the grinding tools do not hinder the roll removal.
  • the drives for the grinding tools preferably electric motors, are each arranged on the end of the sleeve opposite the grinding tool. which are tubular and encompass coaxially around a rotationally driven grinding sleeve.
  • a grinding shaft which is connected to the grinding sleeve in a rotationally fixed manner is axially displaceable relative to the grinding sleeve by small adjustment paths, which carries the grinding tool at one free end projecting from the grinding sleeve and is connected at its other end to a controllable displacement drive for the grinding shaft, which in turn is supported indirectly on the quill.
  • the quill on its inner circumference receives the stator of an electric motor driving the grinding shaft, the rotor is arranged on the grinding shaft slidably mounted directly in the quill.
  • the invention considerably simplifies the known device. This is the separation between the rotary drive for the grinding tool and that of the grinding tool abandoned immediately receiving grinding shaft, so that also on the grinding sleeve can be dispensed with, which previously drove the grinding tool. Rather, the Grinding shaft Part of the electric motor, namely its motor shaft.
  • the stator of the motor is arranged in the movable quill, against which the rotor is axially can move. This design is compared to a significant weight saved on the conventional solution. This also means an improvement in quality on the ground roller.
  • the generic device builds much easier and is also cheaper to manufacture.
  • the flange bushing can preferably be moved axially in ball guides in the sleeve; but it can also slide guides for mounting the flange sleeves against the Quill may be provided.
  • the flange bushings slide in the end plates of the quill.
  • the flange sleeve has a Metal bellows sealed against the quill.
  • Another proposal is the grinding shaft opposite the flange sleeve through a V-ring seal to seal.
  • a metal bellows is provided for the sleeve for sealing the grinding shaft, the front bellows for the force-free displacement of the grinding shaft Pressure force and the rear bellows pulling force on the grinding shaft.
  • the rear bellows can also be used to prevent rotation for displacement the grinding shaft provided push rod can be formed, which extends over two Thrust bearing supported on the rotating grinding shaft.
  • the Quill axis is arranged eccentrically to the grinding shaft axis, so in very a simple adjustment by turning the quill Grinding shaft to the roller axis can be reached.
  • the only drawing figure shows a longitudinal section through an inventive Device for regrinding the rolls installed in hot strip mill stands.
  • the device is shown roughly schematically simplified.
  • the tubular sleeve 3 is at 4 slidably mounted. Hydraulic cylinders 5, which are on the Carriers 2 are arranged and their piston rods 6 indirectly at 7 with the sleeve 3 are connected.
  • the sleeve 3 is, as already stated, tubular and carries in it Inner circumference of the stator 8 of an electric motor defined there.
  • the rotor 9 this Electric motor is attached directly to the grinding shaft 10, which is on its front End 11 receives the cup-shaped grinding wheel 12 and at its rear end with a displacement drive 13 is connected to which the grinding shaft 10 around Displacement stroke 14 is movable in both directions.
  • the axial thrust bearing 15 is provided on the end face of the grinding shaft 10, which and push rod 16 is connected via the axial reciprocating movements on the Grinding shaft 10 can be transmitted, the thrust bearing simultaneously the enable free rotation of the grinding shaft 10.
  • the compressed air cylinder 17 is provided, the piston cylinder surfaces 18 can be acted upon on both sides with compressed air.
  • angular contact ball bearings 19 provided with which the grinding shaft 10 is mounted in the sleeve 3.
  • the inner rings 20 of these angular contact ball bearings are on the grinding shaft 10 and their Outer rings are held on flange bushings 21, which in relation to the sleeve 3 in Axial direction of the grinding shaft 10 are slidably mounted.
  • the flange bushings 21 slide over ball guides 22 in the end plates 23 of the sleeve 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Laminated Bodies (AREA)

Claims (9)

  1. Dispositif pour rectifier les cylindres montés dans des cages de laminoir à feuillard laminé à chaud, au moyen d'outils de rectification (12) en forme de creuset, rotatifs, qui sont déplaçables de façon oscillante parallèlement à l'axe du cylindre, l'outil de rectification (12) étant fixé à l'extrémité d'un arbre de rectification (10) entraíné en rotation et déplaçable transversalement au cylindre, qui est guidé coaxialement dans une douille (3) en forme de tube et déplaçable axialement et qui est relié à son extrémité opposée à un entraínement de déplacement (13) prenant appui indirectement sur la douille (3),
    caractérisé en ce que la douille (3) reçoit à sa périphérie interne le stator (8) d'un moteur électrique entraínant l'arbre de rectification (10), dont le rotor (9) est agencé sur l'arbre de rectification (10) monté de façon axialement déplaçable directement dans la douille (3).
  2. Dispositif pour rectifier les cylindres montés dans des cages de laminoir à feuillard laminé à chaud selon la revendication 1,
    caractérisé en ce que, pour le montage de l'arbre de rectification (10) dans la douille (3), on prévoit à ses deux extrémités des roulements à billes à disposition oblique, dont les bagues internes (20) sont maintenues sur l'arbre de rectification (10) et dont les bagues externes sont maintenues sur une douille à bride, qui est montée de façon déplaçable par rapport à la douille (3) en direction axiale de l'arbre de rectification (10).
  3. Dispositif pour rectifier les cylindres montés dans des cages de laminoir à feuillard laminé à chaud selon la revendication 2,
    caractérisé en ce que la douille à bride (21) est déplaçable axialement dans un guide à billes (22) dans la douille (3).
  4. Dispositif pour rectifier les cylindres montés dans des cages de laminoir à feuillard laminé à chaud selon la revendication 2,
    caractérisé en ce que la douille à bride (21) est déplaçable axialement dans un guide à palier-glisseur dans la douille (3).
  5. Dispositif pour rectifier les cylindres montés dans des cages de laminoir à feuillard laminé à chaud selon l'une des revendications 2 à 5,
    caractérisé en ce que la douille à bride (21) est rendue étanche par rapport à la douille (3) par un soufflet métallique (24).
  6. Dispositif pour rectifier les cylindres montés dans des cages de laminoir à feuillard laminé à chaud selon l'une des revendications 2 à 5,
    caractérisé en ce que l'arbre de rectification (10) est rendu étanche par rapport à la douille à bride (21) par des joints annulaires en V.
  7. Dispositif pour rectifier les cylindres montés dans des cages de laminoir à feuillard laminé à chaud selon la revendication 5,
    caractérisé en ce que, pour rendre étanche l'arbre de rectification (10), on prévoit aux deux extrémités de la douille (3) à chaque fois un soufflet métallique (24), le soufflet avant exerçant une force de poussée sur l'arbre de rectification et le soufflet arrière exerçant une force de traction sur l'arbre de rectification (10) pour le déplacement libre de l'arbre de rectification.
  8. Dispositif pour rectifier les cylindres montés dans des cages de laminoir à feuillard laminé à chaud selon la revendication 7,
    caractérisé en ce que le soufflet arrière (24) est formé simultanément comme protection en torsion de la bielle (16) prévue pour le déplacement de l'arbre de rectification (10), qui prend appui par l'intermédiaire de deux paliers de poussée (15) sur l'arbre de rectification (10) rotatif.
  9. Dispositif pour rectifier les cylindres montés dans des cages de laminoir à feuillard laminé à chaud selon l'une ou plusieurs des revendications précédentes,
    caractérisé en ce que l'axe de la douille est agencé de façon excentrée par rapport à l'axe de l'arbre de rectification (10).
EP97250044A 1996-02-28 1997-02-27 Dispositif pour la rectification in situ des rouleaux de cages de laminoir à chaud pour bandes Expired - Lifetime EP0794021B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19609259 1996-02-28
DE19609259A DE19609259C2 (de) 1996-02-28 1996-02-28 Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen

Publications (2)

Publication Number Publication Date
EP0794021A1 EP0794021A1 (fr) 1997-09-10
EP0794021B1 true EP0794021B1 (fr) 2000-03-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97250044A Expired - Lifetime EP0794021B1 (fr) 1996-02-28 1997-02-27 Dispositif pour la rectification in situ des rouleaux de cages de laminoir à chaud pour bandes

Country Status (3)

Country Link
EP (1) EP0794021B1 (fr)
DE (2) DE19609259C2 (fr)
ES (1) ES2143831T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10016981C2 (de) * 2000-04-06 2002-05-08 Thielenhaus Ernst Gmbh & Co Kg Vorrichtung zur spanenden Bearbeitung von Werkstücken

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE640379C (de) * 1933-03-03 1936-12-31 Himmelwerk A G Elektrisch angetriebene Schleifmaschine zum Herstellen masshaltiger Werkstuecke
DE2206533A1 (de) * 1972-02-11 1973-08-16 Marcello Toncelli Schleifmaschine zum schleifen der kanten einer marmorplatte
FR2326270A1 (fr) * 1975-10-02 1977-04-29 Europ Propulsion Montage de broche porte-outil, notamment pour rectifieuse
JPS60234706A (ja) * 1984-05-07 1985-11-21 Mitsubishi Heavy Ind Ltd 圧延機のロ−ル研削方法
DE4409060C3 (de) * 1994-03-11 2000-08-03 Mannesmann Ag Vorrichtung zum Nachschleifen eingebauter Walzen
DE19537521C2 (de) * 1995-09-29 1997-09-18 Mannesmann Ag Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen

Also Published As

Publication number Publication date
DE59701291D1 (de) 2000-04-27
DE19609259A1 (de) 1997-09-04
EP0794021A1 (fr) 1997-09-10
ES2143831T3 (es) 2000-05-16
DE19609259C2 (de) 1998-07-02

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