EP1216111A2 - Structure de laminage destinee au laminage de bandes - Google Patents

Structure de laminage destinee au laminage de bandes

Info

Publication number
EP1216111A2
EP1216111A2 EP00960482A EP00960482A EP1216111A2 EP 1216111 A2 EP1216111 A2 EP 1216111A2 EP 00960482 A EP00960482 A EP 00960482A EP 00960482 A EP00960482 A EP 00960482A EP 1216111 A2 EP1216111 A2 EP 1216111A2
Authority
EP
European Patent Office
Prior art keywords
stand
guide element
roll
roll stand
bearing
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.)
Withdrawn
Application number
EP00960482A
Other languages
German (de)
English (en)
Inventor
Bernd Berger
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.)
Sundwig GmbH
Original Assignee
Sundwig GmbH
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 Sundwig GmbH filed Critical Sundwig GmbH
Publication of EP1216111A2 publication Critical patent/EP1216111A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/02—Sliding-contact bearings
    • F16C29/025—Hydrostatic or aerostatic
    • 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
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B31/04—Rolling stand frames or housings; Roll mountings ; Roll chocks with tie rods in frameless stands, e.g. prestressed tie rods
    • 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
    • B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion 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
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/147—Cluster mills, e.g. Sendzimir mills, Rohn mills, i.e. each work roll being supported by two rolls only arranged symmetrically with respect to the plane passing through the working rolls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2322/00—Apparatus used in shaping articles
    • F16C2322/12—Rolling apparatus, e.g. rolling stands, rolls

Definitions

  • the invention relates to a rolling stand for rolling strips, in particular metal strips, with a first stand part and a second stand part, at least one of the stand parts being mounted on at least one guide element, along which it is adjusted relative to the other stand part to adjust the roll gap of the stand an adjusting device is adjustable.
  • Rolling mills of this type are designed, depending on the type of load and performance as well as the rolling task to be performed, for example as four, six, twelve or twenty-roll mills.
  • the purpose of the adjustability of the relative position of the stand parts is to be able to adjust the height of the roll gap according to the thickness of the rolling stock to be processed.
  • the geometry of the roll gap is continuously monitored and changed in order to ensure an optimal rolling result. In this way, errors in the processed strip, which are ascertained in the rolling operation and which are due to material non-uniformities, can be corrected.
  • a problem with the adjustment of the position of the scaffolding parts is that due to the forces occurring during the rolling, the respective movable scaffolding part is loaded on the guide elements can.
  • the tensile forces applied to the rolled strip during rolling result in an effective force being applied to the movable stand part in the conveying direction of the strip.
  • the object of the invention is to provide a rolling stand, in which an undisturbed adjustment of the relative position of the stand parts by the occurring rolling and strip tensile forces is possible.
  • the bearing on the guide element is designed as a hydrostatic bearing.
  • the respective moving part of the scaffold is mounted on the respective guide element with almost no friction.
  • the shape of the bearing and its extension along the respective guide element can be adapted to the deformations of the roll stand which occur during the rolling operation in such a way that contact between the guide element and the stand part is avoided, regardless of the respective load situation.
  • the friction between the components of the rolling stand moving relative to one another is even in the case of strongly changing loads or loads which are unfavorable with regard to the deformation of the moving stand part Minimum reduced.
  • this makes it possible to use fast-acting actuating devices that can be manufactured at lower costs due to the lower required conductivity.
  • the adjustment of the roll gap can be carried out with increased precision due to the almost unimpeded adjustability.
  • the invention can be carried out particularly advantageously in such rolling stands in which the guide element is designed in the conventional manner as a cylindrical column.
  • the cylindrical column can be the piston rod of an actuating cylinder, which is used to adjust the respective movable frame part and via which the movable frame part is supported on the stationary frame part.
  • a particularly effective embodiment of the invention is characterized in that the hydrostatic bearing has a plurality of pockets distributed at equal angular intervals around the guide element. With such a configuration of the hydrostatic bearing, it is ensured that the forces in the bearing are applied evenly. In this way, the security that there is no contact between the guide element and the moving scaffold part due to the forces occurring during operation is additionally increased.
  • the invention is particularly suitable in connection with such rolling stands in which four guide elements are provided, one of which is arranged in one of the corner regions of an essentially rectangular plan.
  • the invention is explained in more detail below on the basis of a drawing illustrating an exemplary embodiment. In a schematic representation:
  • Figure 1 is a guide for a 12- or 20-roll mill in longitudinal section.
  • FIG. 2 shows the guide according to FIG. 1 in a section along the section line A-A indicated in FIG. 1;
  • Fig. 3 shows the 12- or 20-roll mill in a schematic plan view.
  • the 12 or 20-roll mill comprises a roll stand 1 which has an upper part 2 and a lower part 3.
  • the rolling stand 1 has an essentially rectangular plan.
  • a cylindrical guide element 4 designed as a piston rod is arranged in each of the four corner regions of this floor plan.
  • each guide element 4 is guided through a respective bearing eye 6 of the upper frame part 2.
  • pockets 7, 8, 9, 10 distributed in the wall 11 surrounding the bearing eye 6 are formed in the area of the bearing eye 6 at equal angular intervals of, for example, 90 ° about the longitudinal axis X of the respective guide element 4.
  • other numbers of pockets 7,8,9,10 can be provided.
  • the pockets 7-10 extend in the axial direction X of the guide element 4 in each case such that a collar 12 is formed at the upper and lower ends of the pockets 7-10 through the wall 11, the height of which is dimensioned such that it resembles a labyrinth seal Pressure oil escapes from the pockets 7,8,9,10.
  • the pockets 7, 8, 9, 10 together form a hydrostatic bearing 14, via which the upper frame part 2 is mounted on the respective guide element 4.
  • the supply of the bearing 14 with pressure oil takes place via supply and discharge lines 15, 16, via which the bearing 14 is connected to a pressure supply, not shown.
  • the position of the upper part 2 of the scaffold is adjusted relative to the position of the fixed lower part 3 of the scaffold by means of a hydraulic actuating device 17 in each case.
  • the actuating devices 17 each have an upper chamber 18 and a lower chamber 19, both chambers 18, 19 coaxial with the axis X of the guide element 4 are arranged.
  • the upper end 4b of the guide element 4 is guided into the chambers 18, 19, the chambers 18, 19 being separated from one another by a shoulder 20 which extends radially around the end 4b.
  • the housing 21 of the actuating device 17 is in each case firmly connected to the upper frame part 2. In this way, the upper frame part 2 is actively raised when pressurized fluid is applied to the upper chamber 18 and actively lowered when the lower chamber 19 is pressurized.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Bearings For Parts Moving Linearly (AREA)

Abstract

La présente invention concerne une structure de laminage servant au laminage de bandes, en particulier de bandes de métal, comprenant une première partie de structure (2) et une seconde partie de structure (3), au moins l'une des parties de structure (2) se trouvant au niveau d'au moins un élément de guidage (4) le long duquel ladite partie de structure peut se déplacer par rapport à l'autre partie de structure (3), au moyen d'un dispositif de guidage (17), afin de régler l'espace de laminage séparant les cylindres de laminage faisant partie de la structure de laminage. Dans une structure de laminage de ce type, la position relative des parties de structure peut être modifiée sans être gênée par les forces de traction produites au niveau des rouleaux et de la bande, grâce au fait que le positionnement au niveau de l'élément de guidage (4) forme un support hydrostatique (14).
EP00960482A 1999-09-29 2000-08-18 Structure de laminage destinee au laminage de bandes Withdrawn EP1216111A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19946561 1999-09-29
DE19946561A DE19946561C1 (de) 1999-09-29 1999-09-29 Walzgerüst zum Walzen von Bändern
PCT/EP2000/008063 WO2001023114A2 (fr) 1999-09-29 2000-08-18 Structure de laminage destinee au laminage de bandes

Publications (1)

Publication Number Publication Date
EP1216111A2 true EP1216111A2 (fr) 2002-06-26

Family

ID=7923653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00960482A Withdrawn EP1216111A2 (fr) 1999-09-29 2000-08-18 Structure de laminage destinee au laminage de bandes

Country Status (3)

Country Link
EP (1) EP1216111A2 (fr)
DE (1) DE19946561C1 (fr)
WO (1) WO2001023114A2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1563073A (fr) * 1968-02-20 1969-04-11
US3847062A (en) * 1971-12-27 1974-11-12 Mesta Machine Co Plunger and cylinder arrangement
DE2826839A1 (de) * 1978-06-19 1980-01-03 Innocenti Santeustacchio Spa Vorrichtung zur regelung des auf die arbeitswalzen einer walzmaschine wirkenden druckes
DE3939124A1 (de) * 1989-11-25 1991-05-29 Sundwiger Eisen Maschinen Vielwalzengeruest mit hydraulischer anstellung
JP2966187B2 (ja) * 1991-08-14 1999-10-25 株式会社神戸製鋼所 圧延機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0123114A2 *

Also Published As

Publication number Publication date
WO2001023114A3 (fr) 2001-10-11
DE19946561C1 (de) 2001-04-26
WO2001023114A2 (fr) 2001-04-05

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