EP0765697B1 - Dispositif pour la rectification in-situ des rouleaux d'une cage de laminage à chaud pour bandes - Google Patents

Dispositif pour la rectification in-situ des rouleaux d'une cage de laminage à chaud pour bandes Download PDF

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Publication number
EP0765697B1
EP0765697B1 EP96250188A EP96250188A EP0765697B1 EP 0765697 B1 EP0765697 B1 EP 0765697B1 EP 96250188 A EP96250188 A EP 96250188A EP 96250188 A EP96250188 A EP 96250188A EP 0765697 B1 EP0765697 B1 EP 0765697B1
Authority
EP
European Patent Office
Prior art keywords
grinding
shaft
tool
sleeve
hot strip
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
EP96250188A
Other languages
German (de)
English (en)
Other versions
EP0765697A1 (fr
Inventor
Dieter Dipl.-Ing. Figge
Herbert In. Quambusch
Herbert Ing. Hövel
Peter Dipl.-Ing. Jollet
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 EP0765697A1 publication Critical patent/EP0765697A1/fr
Application granted granted Critical
Publication of EP0765697B1 publication Critical patent/EP0765697B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • the invention relates to a device for regrinding in Hot strip rolling mills built-in rolls, especially the work rolls in Four-high mill stands using several over the bale length of the roll to be ground distributed rotating cup-shaped grinding tools arranged side by side, the together with the tool holder receiving them parallel to the roller axis can be moved in an oscillating manner and adjusted independently of it in a pressure-controlled manner, each grinding tool separately driven and adjustable speed on a quill axially displaceable in the tool carrier is arranged with drive elements for the cup-shaped grinding tool is connected, the grinding tool being arranged at one end of the grinding shaft and the grinding shaft at its other end with an adjustable Sliding drive for the grinding shaft is provided.
  • a generic device is described in DE-A-44 09 060. She serves regrinding, especially the work rolls of hot strip stands after reaching a certain wear condition u.z. when installed in the mill stand, which is an improvement over the previous one applied regrinding of the rollers when removed to external Roll grinders represents.
  • the known device enables this Reworking the roller surface when installed with great accuracy and allowed by changing the pressure with which the grinding tools are applied be, also the production of special roll ground profiles, even if that Wear pattern of the roller after rolling always the same bandwidth compared to Center of the roller has pronounced edge areas with a larger diameter.
  • the previously known solution strikes the roller to turn on the grinding tools before, quills (referred to as plungers there) to which the tools are attached With the help of piston-cylinder units to move in the longitudinal direction and thereby Control tool.
  • the piston-cylinder units are pressure and displacement-controlled, so that every grinding position and pressure can be moved.
  • the plungers can be moved back to a position in the the grinding tools do not hinder the roll removal.
  • the drives for the Grinding tools preferably electric motors, are each on the Grinding tool arranged opposite end of the plunger and together with this movable.
  • the invention proposes that the quill is tubular and coaxially encompasses a drivable grinding sleeve, in the one rotationally fixed to the grinding sleeve grinding shaft opposite the Abrasive sleeve is guided axially displaceable by small adjustment paths, which at one free end protruding from the grinding sleeve, the grinding tool carries and on at the other end with an adjustable sliding drive for the grinding shaft is connected, which in turn is supported indirectly on the quill.
  • the present invention proposes a separation between the rotary drive for the Grinding tool and the grinding shaft directly receiving the grinding tool before by the quill - or, as referred to in the prior art, the plunger - hollow is formed and encompasses a grinding sleeve over which the grinding tool is driven.
  • the actual axial displacement mechanism for the grinding tool during the grinding process is in the form of a slidable into the grinding sleeve inserted grinding shaft so that the dynamic to move Masses (displacement approx. ⁇ 12.5 mm) essentially to the mass of the Reduce the grinding shaft and that of the grinding tool. That many times over larger masses of the quill and the rotary actuator that have to be moved around the grinding tool into a position enabling the roll removal shift, are independent of the control drive of the grinding movement and during of the grinding process out of operation.
  • the drive motors for the Grinding tools not axially together with the sleeve during grinding operation moves, but are fixed, while only the grinding shaft is moved back and forth, which in turn rotate over the grinding sleeve of the fixed drive motor is transferred.
  • the hollow shaft motor was a particularly compact and Device shortening design of the device according to the invention found that it allows to use a standardized air cylinder.
  • an adjustable air cylinder is provided as Sliding drive for the grinding shaft.
  • a compressed air cylinder can because of the compressibility of the medium Air bumps can be well balanced.
  • the regulation of Measure the grinding shaft movement finely and precisely because of the alternating Actuation of the piston surfaces of the compressed air cylinder is sensitive the grinding shaft and the grinding tool is secured.
  • the air cylinder can be relatively light because the masses to be moved due to the proposal according to the invention are low.
  • the sleeve can be clamped in the tool holder and only when Roller change or to remove the grinding tools together with the grinding sleeve Grinding tool and drive motor in the tool holder axially (in the order of magnitude 200 mm).
  • This proposal of the invention ensures that the Quill can also travel a larger distance, for example if the rollers have to be replaced or the tools have to be replaced.
  • the quill with the motor flanged onto it is replaced by a Sliding drive, for example in the form of a piston-cylinder unit axially withdrawn, the axial guide of the quill on its outer circumference in a Appropriate guidance of the tool holder takes place.
  • the sleeve in the tool holder with a closed Provide water cooling and can be clamped in any position. This can be necessary because of high temperatures in the working area of the grinding tools occur through the forming process, the warping of the guides between Tool carrier and quill or quill and grinding sleeve could result.
  • a Water cooling in this area prevents material warping and thus represents the required high grinding accuracy.
  • the hollow shaft drive morale is also water cooled.
  • the grinding process can be controlled automatically, so can an actual value by measuring the pressure in the cylinder space of the compressed air cylinder be tapped with one corresponding to the roll shape to be ground Target pressure value is compared. If the actual value deviates from the target value, a Pressure increase or decrease in the cylinder space of the compressed air cylinder initiated with a change in the contact pressure of the grinding shaft Effects grinding tool on the roller.
  • the entire facility is for high Quality standard can be used.
  • the only drawing figure shows, roughly schematically, an inventive one Device, which initially consists of the cup-shaped grinding tool 1, which in expediently via a standardized steep taper 2 with the grinding shaft 3 connected is.
  • the grinding shaft 3 is, as indicated at 4, in the direction of it Longitudinal axis 5 slidably arranged in a grinding sleeve 6 in both directions, which is rotatably mounted at 7 in the quill 8.
  • the quill 8 in turn is in the direction of the arrow 9 displaceable in the tool carrier 10, for which purpose between the tool carrier 10 and the quill is articulated a piston-cylinder unit 11.
  • a hollow shaft motor 13 On the face of the quill 9 is flanged at 12 a hollow shaft motor 13, the hollow shaft 14 at 15 coaxially with the end face of the grinding sleeve 6 is coupled.
  • the hollow shaft 14 of the hollow shaft motor 13 is designed as a rotor with the winding 16; the stator winding 17 is fixed in the arranged on the sleeve 8 flanged housing 18 of the hollow shaft motor and also water-cooled.
  • An axial bearing 19 is provided on the end face, which is connected to a pull and push rod 20 is connected via the axial back and forth movements via the thrust bearing 19 on the Grinding shaft 3 can be transmitted, the axial bearing being the free one Rotatability of the grinding sleeve 6 and the grinding shaft slidably arranged therein enables.
  • the pull and push rod 20 is on the grinding tool 1st opposite end of the hollow shaft motor 13 out of the housing 18 and connected to a compressed air cylinder 21, the cylinder surfaces on both sides with Compressed air can be acted on, so that the pull and push rod 20 and that Thrust bearing 19 the grinding shaft rotating with the grinding sleeve 6 back and forth in the axial direction can be moved.
  • the necessary axial movement is limited to the cup-shaped one Grinding tool 1, the grinding shaft 3 and the pull and push rod 20, i.e. it only relatively small masses are moved (measured on the entire device). It is only when changing the rolls or when changing the grinding tools required to withdraw the entire device from the area of the rollers.
  • the piston-cylinder unit 11 is pressurized whereby the sleeve 8 in the direction of arrow 9 together with all the components guided therein is withdrawn, so that the necessary space for those to be carried out Work is created.
  • the sleeve 8 is in the Tool holder 10 firmly clamped so that the control movement of the Grinding tool 1 exclusively via the compressed air cylinder 21 with the small ones moving masses takes place.

Landscapes

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

Claims (8)

  1. Dispositif pour la rectification des cylindres montés dans des cages de laminage de feuillards à chaud, en particulier des cylindres de travail dans des cages de laminage quarto au moyen de plusieurs outils de rectification (1) en forme de creuset, rotatifs, agencés l'un à côté de l'autre de façon répartie sur la longueur du corps du cylindre à rectifier, lesquels outils peuvent être déplacés de façon oscillante en même temps que le support d'outils (10) les recevant parallèlement à l'axe du cylindre et peuvent être appliqués, de façon réglée en pression, indépendamment, transversalement à celui-ci, chaque outil de rectification (1) étant entraíné en rotation de façon séparément réglable en vitesse et étant agencé sur une douille (8) montée dans le support d'outils (10) de façon axialement déplaçable transversalement au cylindre, qui est reliée à des éléments d'entraínement pour l'outil de rectification (1) en forme de creuset, l'outil de rectification (1) étant agencé à une extrémité de l'arbre de rectification (3) et l'arbre de rectification (3) étant muni, à son autre extrémité, d'un entraínement en déplacement (21) réglable pour l'arbre de rectification (3),
    caractérisé en ce que la douille (8) est réalisée de façon tubulaire et entoure coaxialement un manchon de rectification pouvant être entraíné en rotation (6) dans lequel il est guidé de façon axialement déplaçable (4), sur de faibles courses, un arbre de rectification (3) relié de façon solidaire en rotation au manchon de rectification (6), par rapport au manchon de rectification (6), qui, à son extrémité libre faisant saillie du manchon de rectification (6), porte l'outil de rectification (1) et, à son autre extrémité, est relié à un entraínement en déplacement réglable (21) pour l'arbre de rectification (3) qui, de son côté, s'appuie indirectement sur la douille (8).
  2. Dispositif pour la rectification des cylindres montés dans des cages de laminage de feuillards à chaud selon la revendication 1,
    caractérisé en ce que, comme entraínement en rotation pour le manchon de rectification (6) et l'arbre de rectification (3), il est prévu un moteur (13) à arbre creux dont l'arbre creux (14) couplé, avec le même axe, au manchon de rectification (6) est traversé par une barre de poussée et de traction (20) montée de façon solidaire en rotation, qui est reliée, d'une part, à l'arbre de rectification (3) et, d'autre part, à l'entraínement en déplacement (21), agencé sur le côté opposé à l'outil de rectification (1) du moteur (13) à arbre creux pour l'arbre de rectification (3), de sorte que la capacité de rotation libre de l'arbre de rectification (3) n'est pas altérée et, simultanément, un déplacement axial précis en position de l'arbre de rectification (3) peut être réalisé.
  3. Dispositif pour la rectification des cylindres montés dans des cages de laminage de feuillards à chaud selon la revendication 2,
    caractérisé en ce qu'un cylindre à air comprimé réglable est prévu comme entraínement de déplacement (21) pour l'arbre de rectification.
  4. Dispositif pour la rectification des cylindres montés dans des cages de laminage de feuillards à chaud selon la revendication 3,
    caractérisé en ce que la douille (8) pouvant être fixée pendant la rectification dans le support d'outils (10) peut être axialement déplacée lors du changement du cylindre ou pour démonter les outils de rectification (1) en même temps que le manchon de rectification (6), l'arbre de rectification (3), et le moteur à arbre creux (13) dans le support d'outils (10).
  5. Dispositif pour la rectification des cylindres montés dans des cages de laminage de feuillards à chaud selon la revendication 4,
    caractérisé en ce que la douille (8) est munie, dans le support d'outils (10), d'un moyen de refroidissement à eau fermé et peut être fixée dans chaque position quelconque.
  6. Dispositif pour la rectification des cylindres montés dans des cages de laminage de feuillards à chaud selon la revendication 5,
    caractérisé en ce que l'outil de rectification (1) est fixé de façon rapidement amovible, par l'intermédiaire d'un récepteur à fort cône, dans l'arbre de rectification (3).
  7. Dispositif pour la rectification des cylindres montés dans des cages de laminage de feuillards à chaud selon une ou plusieurs des revendications 1 à 6,
    caractérisé en ce que le moteur à arbre creux (13) est un moteur électrique refroidi par de l'eau.
  8. Dispositif pour la rectification des cylindres montés dans des cages de laminage de feuillards à chaud selon une ou plusieurs des revendications 1 à 7,
    caractérisé en ce qu'un soufflet métallique est prévu pour l'étanchéification du déplacement axial entre le manchon de rectification (6) et l'arbre de rectification (3).
EP96250188A 1995-09-29 1996-09-05 Dispositif pour la rectification in-situ des rouleaux d'une cage de laminage à chaud pour bandes Expired - Lifetime EP0765697B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19537521 1995-09-29
DE19537521A DE19537521C2 (de) 1995-09-29 1995-09-29 Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen

Publications (2)

Publication Number Publication Date
EP0765697A1 EP0765697A1 (fr) 1997-04-02
EP0765697B1 true EP0765697B1 (fr) 2000-03-15

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ID=7774364

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96250188A Expired - Lifetime EP0765697B1 (fr) 1995-09-29 1996-09-05 Dispositif pour la rectification in-situ des rouleaux d'une cage de laminage à chaud pour bandes

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EP (1) EP0765697B1 (fr)
DE (2) DE19537521C2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19609259C2 (de) * 1996-02-28 1998-07-02 Mannesmann Ag Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen
DE19633855A1 (de) * 1996-08-16 1998-02-19 Mannesmann Ag Verfahren und Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen
CN116214346B (zh) * 2023-05-06 2023-06-30 唐山市丰润区大成钢铁有限公司 一种热轧钢材的自动加工系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0675730B2 (ja) * 1989-05-19 1994-09-28 三菱重工業株式会社 ロールの研削方法
DE4409060C3 (de) * 1994-03-11 2000-08-03 Mannesmann Ag Vorrichtung zum Nachschleifen eingebauter Walzen

Also Published As

Publication number Publication date
DE19537521C2 (de) 1997-09-18
EP0765697A1 (fr) 1997-04-02
DE59604658D1 (de) 2000-04-20
DE19537521A1 (de) 1997-04-17

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