EP0192873A2 - Vorrichtung zur Feineinstellung der Formwalzen eines Präzisionswalzwerkes - Google Patents

Vorrichtung zur Feineinstellung der Formwalzen eines Präzisionswalzwerkes Download PDF

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Publication number
EP0192873A2
EP0192873A2 EP19850306193 EP85306193A EP0192873A2 EP 0192873 A2 EP0192873 A2 EP 0192873A2 EP 19850306193 EP19850306193 EP 19850306193 EP 85306193 A EP85306193 A EP 85306193A EP 0192873 A2 EP0192873 A2 EP 0192873A2
Authority
EP
European Patent Office
Prior art keywords
rollers
rolling mill
precision rolling
shafts
roller
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Withdrawn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
EP19850306193
Other languages
English (en)
French (fr)
Inventor
Shoji Kotobuki Sangyo Okada
Sadao Kotobuki Sangyo Yoshizawa
Minoru Nitta
Kazuyuki Oishi
Takuo Sugawara
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.)
Kotobuki Sangyo KK
Original Assignee
Kotobuki Sangyo KK
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 Kotobuki Sangyo KK filed Critical Kotobuki Sangyo KK
Publication of EP0192873A2 publication Critical patent/EP0192873A2/de
Withdrawn legal-status Critical Current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
    • 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
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
    • B21B39/165—Guides or guide rollers for rods, bars, rounds, tubes ; Aligning guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/22—Aligning on rolling axis, e.g. of roll calibers
    • 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
    • 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
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • B21B31/26—Adjusting eccentrically-mounted roll bearings

Definitions

  • This invention relates to a precision rolling mill which comprises a pair of forming rollers which cooperate to carry out finishing action on rolled steel strip, in which a fine adjustment arrangement is provided to enable the axial alignment of the rollers to be adjusted in a final finish line for rolling steel strips.
  • the present invention has therefore been developed primarily with a view to providing an adjustment device for a forming roller in a precision rolling mill, which can reliably adjust the required amount of axial movement of the forminc roller with a high precision, whereby the deficiencies c existing equipment can be overcome, and improvement in rolling product produced by the rolling mill obtained, particularly the out-of-roundness of wire rod and steel bar products often supplied with existing equipment.
  • a precision rolling mill comprising a pair of forming rollers which cooperate to carry out finishing action on rolled steel strip, mounting shafts on which the rollers are mounted, and a pair of threaded adjusters engaging one on either side of each roller in order to enable the rollers to be adjusted axially relative to each other so as to bring them into alignment for a finishing action, characterised in that a reduction gear drive is coupled with each of the threaded adjusters to enable precise axial adjustment of the rollers.
  • a pair of eccentric shafts 2a,2b have forming rollers la,lb thereon, and the shafts are mounted in a guide box 32 so as to be movable in an axial direction.
  • the rollers la,lb are rotatable on the respective eccentric shafts, as shown in Figure 3 for roller lb, via sleeve or bush 14b and bearings 13b.
  • Supporting shafts 3a,3b are integrally formed coaxially with the eccentric shafts 2a,2b on their upper ends.
  • the axes or centres of the eccentric shafts 2a,2b are spaced eccentrically at a required distance from those of the supporting shafts 3a,3b.
  • adjusting screws 17a,17b that press the supporting shafts 3a,3b in an axial direction.
  • adjusting screws 6a,6b that press the eccentric shafts 2a,2b in an axial direction.
  • the adjusting screws 17a,17b can be interlocked for operation by associated worm/worm wheel drive mechanisms 16a,15a,18a and 16b,15b,18b respectively in the upper gear case 23, and the adjusting screws 6a and 6b can be operated by associated worm/worm wheel drive mechanisms 16a,5a,7a and 16b,5b,7b respectively in the lower gear case 28. These worm mechanisms are described in more detail below.
  • Worms 15a,15b are integrally formed with worm shafts 16a,16b provided in the upper gear case 23 and are in meshing relation with the worm wheels 18a,18b, which form the heads of adjusting screws 17a and 17b respectively. For this reason, the turning effort of worm shafts 16a,16b, when they are rotated, is imparted through worms 15a,16b to worm wheels 18a,180, which an turn are rotated at reduced speed as a first stage, subsequently turning the screw shanks 19a,19b for adjusting the screws 17a,17b.
  • worms 5a,5b which are integrally formed with the worm shafts 16a,16b provided in the lower gear Merrise 25, transmit turning effort to the worm wheels 7a,7b of adjusting screws 6a,6b, causing the pressing parts 9a,9b above the wheels to move in vertical directions, and when the pressing parts move up, tne eccentric shafts 2a,2b are made to move axially in a small amount.
  • 21a is a lock bolt for fixing the worm shafts 16a,16b.
  • the upper gear case 23 is fixed on the upper portion of a guide box 32 using 3 hexagonal bolts 24.
  • 26 is a case cover which is fixed in place with a small screw 27.
  • the eccentric shafts 2a,2b are provided at their lower portions with eccentric pieces lla,llb and shims 12a,12b.
  • the turning effort of the worms 5a,5b in engagement with the worm wheels of the adjusting screws 6a,6b is converted into vertical movements of the pressing parts 9a,9b by means of the threaded engagement of adjusting screws 8a,8b in the gear case 28; the pressing parts 9a,9b then push up eccentric shafts 2a,2b via thrust washers 10a,10b.
  • rollers la,lb can be adjusted relative to each other into proper alignment by pushing up or pushing down the adjusting screws 17a,17b and the adjusting screws 6a,6b.
  • the lower gear case 25 is fixed on the bottom of guide box 32 using a hexagonal bolt 24.
  • a delivery guide 29 projects from the guide box 32 and serves to guide steel strip products which issue from rolls 37a,37b into the guide box 32 for finishing rolling treatment by the forming rolls la,lb.
  • the products are first lightly pressed to shape by guide 29, and then pass to final treatment by the forming grooves 34a,34b in the rollers la,lb, and issue from the guide box 32 via a sleeve guide 28 secured to the end of the box by bolts 31.
  • a pinion 20 is mounted in the gear case 23 and is operable to drive pinions 22a and 22b, via a centre pinion 21, in order to adjust the lateral spacing between the surfaces of the rollers la and lb.
  • the pinions 22a and 22b mesh with gears 4a and 4b respectively, which are fast with the upper ends of the supporting shafts 3a and 3b. Therefore, in this procedure, the gears 4a'and 4b are rotated at reduced speed, and the distance between the surfaces of rollers la,lb is adjusted by making use of the eccentric relation between the eccentric shafts 2a,2b and the supporting shafts 3a,3b.
  • the adjusting screw 17 is raised by turning the upper worm shaft. Also, the lower worm shaft is turned to make adjusting screw 6a move upwards, thereby pushing-up the eccentric shaft 2a through the same distance as the screw 17 has moved, until adjustment of the roller la is completed to take-up the misalignment ⁇ . As a result, the calibre centres 33a,33b are exactly aligned. Thereafter, the adjustment is locked by lock bolts 21a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP19850306193 1985-02-25 1985-09-02 Vorrichtung zur Feineinstellung der Formwalzen eines Präzisionswalzwerkes Withdrawn EP0192873A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2482485 1985-02-25
JP24824/85U 1985-02-25

Publications (1)

Publication Number Publication Date
EP0192873A2 true EP0192873A2 (de) 1986-09-03

Family

ID=12148925

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850306193 Withdrawn EP0192873A2 (de) 1985-02-25 1985-09-02 Vorrichtung zur Feineinstellung der Formwalzen eines Präzisionswalzwerkes

Country Status (1)

Country Link
EP (1) EP0192873A2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102873103A (zh) * 2012-10-12 2013-01-16 衡阳华菱钢管有限公司 连轧机中心线的调整方法及装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102873103A (zh) * 2012-10-12 2013-01-16 衡阳华菱钢管有限公司 连轧机中心线的调整方法及装置

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Inventor name: OISHI, KAZUYUKI

Inventor name: OKADA, SHOJIKOTOBUKI SANGYO

Inventor name: YOSHIZAWA, SADAOKOTOBUKI SANGYO

Inventor name: NITTA, MINORU

Inventor name: SUGAWARA, TAKUO