EP0361632A2 - Procédé de guidage de produits laminés de forme allongée et cylindrique creux - Google Patents

Procédé de guidage de produits laminés de forme allongée et cylindrique creux Download PDF

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Publication number
EP0361632A2
EP0361632A2 EP89250043A EP89250043A EP0361632A2 EP 0361632 A2 EP0361632 A2 EP 0361632A2 EP 89250043 A EP89250043 A EP 89250043A EP 89250043 A EP89250043 A EP 89250043A EP 0361632 A2 EP0361632 A2 EP 0361632A2
Authority
EP
European Patent Office
Prior art keywords
rolling
axis
rolling stock
guide means
stock
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
EP89250043A
Other languages
German (de)
English (en)
Other versions
EP0361632A3 (fr
EP0361632B1 (fr
Inventor
Rolf Dr.-Ing. Kümmerling
Manfred Dipl.-Ing. Bellmann
Rolf Dipl.-Ing. Pieters
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6364142&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0361632(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0361632A2 publication Critical patent/EP0361632A2/fr
Publication of EP0361632A3 publication Critical patent/EP0361632A3/fr
Application granted granted Critical
Publication of EP0361632B1 publication Critical patent/EP0361632B1/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
    • B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • B21B25/02—Guides, supports, or abutments for mandrels, e.g. carriages or steadiers; Adjusting devices for mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work

Definitions

  • the invention relates to a method for guiding elongated, hollow cylindrical rolling stock rotating about the longitudinal axis according to the preamble of the main claim.
  • a guide means arranged below the rolling axis.
  • a guide means can generally be a tube, a half-shell or, in the case of rolls with an internal tool held on the outlet side, a plurality of sleeve guide stands arranged one behind the other, in which usually three rolls lying parallel to the roll axis and adjustable in the roll axis direction are arranged.
  • the guide means is in practice set at a distance from the center of the roll so that there is play between the surface of the rolling stock and the surface of the guide means, in particular so as not to hinder the longitudinal movement of the rolling stock.
  • this game leaves transverse vibrations of the rolling stock and the inside tool, which lead to increased wear of the guide means and to wall thickness irregularities.
  • it can also be intended as in the aforementioned DE-OS 20 32 533 a permanent system on the rolling stock, whereby the wear is increased.
  • the invention has for its object to develop a method to guide the elongated, hollow cylindrical rolling stock exactly to the center of the roll without hindering the helical feed.
  • the vibrations that occur in the usual guide system should be hampered as far as possible and thereby achieve a uniform wall thickness.
  • the proposed method can be used for all rolling mills in which the rolling stock rotates about the longitudinal axis during the rolling, that is to say the piercing mill, diagonal mill and reeler.
  • the guide means is predominantly designed as a tube or as a half-shell with corresponding slots for retracting the drive rollers.
  • the sleeve guide blocks which are mainly used for rolling with an internal tool.
  • three rollers are usually arranged parallel to the rolling axis and can be adjusted in the rolling axis direction.
  • the previously common method for guiding the rolling stock was to keep the three rollers at a predetermined distance from the surface of the rolling stock. This led to strong acceleration forces occurring during the helical feed of the rolling stock and the guide means being subjected to severe wear.
  • the two rollers arranged in a horizontal plane below the rolling axis are brought to bear on the surface of the rolling stock during the rolling process.
  • the rollers are predominantly set against the direction of gravity, so that the gravity component of the rolling stock, together with the internal tool, supports the application of the surface of the rolling stock to the rollers.
  • the third roll above the rolling axis at a predetermined distance from the surface of the rolling stock during the rolling process. This distance should be at least 20% of the outside diameter of the rolling stock. This prevents the rolling stock from striking this third role and the unwanted transverse vibrations can thereby be rekindled.
  • the two rollers lying below the rolling axis are spaced so that the straight lines from the respective axis to the center of the rolling intersect at an angle of 120 degrees. With this angle specification, the usual manufacturing and installation-related deviations of the order of magnitude of a few degrees are also to be included.
  • the rolling stock is shown according to the previously known method.
  • the rolling stock 1 with an internal tool 2, z. B. mandrel or rod, rolled.
  • the longitudinal axis 3 is also the rolling axis here.
  • the three rollers 5, 5 ', 5 ⁇ are arranged in a sleeve guide block, not shown here, and can be adjusted in the rolling axis direction.
  • the roles of the roles is such that a game 6 remains between the surface of the rollers 5, 5 ', 5 5 and the rolling stock 1.
  • the roller 5 ', 5' lying above the rolling axis 3 can be pivoted in the ejection position, shown here in broken lines, so that the rolling stock can be removed from the rolling line together with the inner tool 2.
  • FIG 2 shows the rolling stock according to the inventive method, the same reference numerals as in Figure 1 were used for the same parts.
  • the two rollers 5, 5 'lying below the rolling axis 3' have been brought into contact with the surface of the rolling stock 1, so that no play remains in the contact area between the surface of the roller 5, 5 'and the rolling stock 1.
  • This system is supported by the gravity component of the rolling stock 1 and the inner tool 2 which presses on the roller 5, 5 '.
  • the roller 5' above the rolling axis 3 is held at a predetermined distance 7 from the surface of the rolling stock 1. If there is no danger that the rolling stock 1 can jump out of the rolling line, this roller 5 ⁇ , as shown in the figure, can be pivoted into the ejection position immediately after the beginning of the rolling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Rolling Contact Bearings (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
EP89250043A 1988-09-28 1989-09-21 Procédé de guidage de produits laminés de forme allongée et cylindrique creux Expired - Lifetime EP0361632B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3833375A DE3833375C1 (fr) 1988-09-28 1988-09-28
DE3833375 1988-09-28

Publications (3)

Publication Number Publication Date
EP0361632A2 true EP0361632A2 (fr) 1990-04-04
EP0361632A3 EP0361632A3 (fr) 1991-03-20
EP0361632B1 EP0361632B1 (fr) 1993-12-29

Family

ID=6364142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89250043A Expired - Lifetime EP0361632B1 (fr) 1988-09-28 1989-09-21 Procédé de guidage de produits laminés de forme allongée et cylindrique creux

Country Status (3)

Country Link
EP (1) EP0361632B1 (fr)
DE (2) DE3833375C1 (fr)
ES (1) ES2047658T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0868947A2 (fr) * 1997-03-24 1998-10-07 MANNESMANN Aktiengesellschaft Dispositif de guidage d'une loupe

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19606361C2 (de) * 1996-02-12 1998-02-26 Mannesmann Ag Vorrichtung zum Führen einer Luppe
DE102008028348B4 (de) * 2008-06-07 2010-05-27 Sms Meer Gmbh Vorrichtung zum Führen von rotierenden Dornstangen und Hohlblöcken im Bereich von Schrägwalzwerken

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1762427A (en) * 1928-07-12 1930-06-10 Ralph C Stiefel Tube-rotating apparatus
DE2032533A1 (en) * 1970-07-01 1972-01-13 Fa. Friedrich Kocks, 4000 Düsseldorf Cross rolling mill - for workpiece and mandrel alignment and guiding
JPS5772708A (en) * 1980-10-24 1982-05-07 Nippon Kokan Kk <Nkk> Front and back roller guide for skew rolling mill
DE8607191U1 (de) * 1986-03-13 1986-04-24 Mannesmann AG, 40213 Düsseldorf Vorrichtung zum Zentrieren und Führen einer Dornstange und eines Hohlkörpers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1762427A (en) * 1928-07-12 1930-06-10 Ralph C Stiefel Tube-rotating apparatus
DE2032533A1 (en) * 1970-07-01 1972-01-13 Fa. Friedrich Kocks, 4000 Düsseldorf Cross rolling mill - for workpiece and mandrel alignment and guiding
JPS5772708A (en) * 1980-10-24 1982-05-07 Nippon Kokan Kk <Nkk> Front and back roller guide for skew rolling mill
DE8607191U1 (de) * 1986-03-13 1986-04-24 Mannesmann AG, 40213 Düsseldorf Vorrichtung zum Zentrieren und Führen einer Dornstange und eines Hohlkörpers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0868947A2 (fr) * 1997-03-24 1998-10-07 MANNESMANN Aktiengesellschaft Dispositif de guidage d'une loupe
EP0868947A3 (fr) * 1997-03-24 1999-05-19 MANNESMANN Aktiengesellschaft Dispositif de guidage d'une loupe

Also Published As

Publication number Publication date
EP0361632A3 (fr) 1991-03-20
EP0361632B1 (fr) 1993-12-29
ES2047658T3 (es) 1994-03-01
DE58906556D1 (de) 1994-02-10
DE3833375C1 (fr) 1989-05-18

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