EP0044222B1 - Laminoir - Google Patents

Laminoir Download PDF

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Publication number
EP0044222B1
EP0044222B1 EP81303208A EP81303208A EP0044222B1 EP 0044222 B1 EP0044222 B1 EP 0044222B1 EP 81303208 A EP81303208 A EP 81303208A EP 81303208 A EP81303208 A EP 81303208A EP 0044222 B1 EP0044222 B1 EP 0044222B1
Authority
EP
European Patent Office
Prior art keywords
rolling mill
movable
secured
parts
fixed
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
Application number
EP81303208A
Other languages
German (de)
English (en)
Other versions
EP0044222A3 (en
EP0044222A2 (fr
Inventor
Alan Foss
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.)
Davy Mckee Sheffield Ltd
Original Assignee
Davy Mckee Sheffield Ltd
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10514811&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0044222(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Davy Mckee Sheffield Ltd filed Critical Davy Mckee Sheffield Ltd
Priority to AT81303208T priority Critical patent/ATE8212T1/de
Publication of EP0044222A2 publication Critical patent/EP0044222A2/fr
Publication of EP0044222A3 publication Critical patent/EP0044222A3/en
Application granted granted Critical
Publication of EP0044222B1 publication Critical patent/EP0044222B1/fr
Expired 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
    • 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
    • B21B31/24—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators

Definitions

  • This invention relates to rolling mills having an electrical transducer arranged to indicate the position of a movable part of the rolling mill with respect to a fixed part thereof.
  • Rolling mills consist essentially of at least one pair of rotatable rolls mounted at their ends in bearing chock assemblies which are supported in a fixed mill housing. Means are provided for moving at least one of the rolls and its bearing chock assemblies with respect to the mill housing in the direction to thereby adjust the gap between the rolls.
  • This movement of the roll and its bearing chock assemblies may be brought about by means of screws threaded in nuts positioned in the fixed housing and bearing on the chock assemblies of the roll or alternatively each bearing chock assembly may have a hydraulic ram disposed between it and the fixed part of the mill housing. By expanding or contracting the rams, the roll and its bearing chock assemblies are moved relative to the mill housing in the direction to adjust the gap between the rolls.
  • a rolling mill has a fixed part, a part movable linearly with respect to the fixed part and an electrical transducer for indicating the position of the movable part with respect to the first part, said transducer comprising an elongate magnetostrictive element secured to one of the parts, an electronic transmitter for transmitting magnetostrictive signals into said element, an electronic receiver for receiving magnetostrictive signals reflected back along said element, magnetic means secured to said other part and associated with said element to produce a magnetic field which serves to reflect said signals transmitted along said element back to said receiver and timing means for measuring the time interval between the transmission and the reception of said signals, said time interval being representative of the separation of said parts.
  • a prime advantage of the invention is that there is no contact between the fixed and movable parts when the measurement is made.
  • a rolling mill has a fixed housing 1 defining a window 3. Contained within the window there are bearing chock assemblies for upper and lower roll assemblies.
  • the upper roll assembly consists of a work roll 5 and a back-up roll 7 and the ends of these rolls are supported in bearing chock assemblies 9 and 11 respectively.
  • the lower roll assembly similarly consists of a work roll and a back-up roll supported at their ends in bearing chock assemblies but only the work roll 13 is shown in the figure.
  • the upper work roll assembly is connected to the lower ends of a pair of screws, one of which 15 is shown in the figure.
  • Each screw is threaded in a nut 17 fixed in the housing 1 and the screws are rotated in the nuts by worm and wheel apparatus 19 to raise and lower the screws and hence the roll assembly relative to the fixed mill housing.
  • each screw has a transducer associated with it.
  • Each transducer comprises an elongate magnetostrictive element 21 projecting from a casing 23 which is mounted on the top of the housing. The element projects into a central bore 25 in the screw 1 5. The length of the element 21 is such that its end is always spaced from the closed end of the bore 25.
  • the casing 23 encloses a transmitter 55 and a receiver 57 of magnetostrictive signals.
  • the transmitter is energised causing it to transmit waves of magnetostrictive energy into the element 21.
  • the waves pass along the element until they encounter the magnetic field set up by the magnet 29 and they are reflected by the magnetic field back along the element to the receiver.
  • a timer 59 is employed to measure the time interval between the transmission and the reception of the waves and this value is representative of the distance between the transmitter/receiver and the magnet.
  • magnet 29 is displaced lengthwise of the element, thereby changing the position of the magnet with respect to the casing 23.
  • the time interval for the passage and return of the waves along the element is representative of the distance between the magnet 29 and the upper end of the fixed housing and this is representative of the distance between the upper roll assembly and the upper end of the housing.
  • a tube 31 is mounted on the upper end of the screw with the bore of the tube in line with the axis of the screw.
  • the tube projects through an opening in the upper end of the housing and an annular magnet 33 is mounted on the upper end of the tube.
  • the elongate element 21 extends through the magnet 33 into the tube 31.
  • the casing 23 at the upper end of the element is mounted on a bracket 25 on the upper end of the housing.
  • the invention is applied to a hydraulic rolling mill.
  • the lower end of the mill housing is shown in this,figure and, at the bottom of the window 3 beneath the bearing chock assembly 37 of the lower roll assembly, there is a piston-cylinder device 39.
  • This device comprises a fixed piston 41 in a cylinder 43 beneath the work roll assembly. By introducing fluid under pressure into the cylinder, the lower roll assembly is raised and lowered relative to the fixed housing.
  • the transducer associated with the piston-cylinder device 39 comprises a magnetostrictive element 45 projecting upwards from a casing 47 mounted on a bracket 49 attached to the piston 41.
  • the element projects through an annular permanent magnet 51 secured to a bracket 53 extending from the cylinder 43.
  • the magnet 51 is displaced along the length of the element 45.
  • FIG. 4 A circuit diagram of the transducer which is applicable to all the embodiments of the invention is shown in Figure 4.
  • the magnetostrictive element 21 is shown surrounded by the permanent magnet 29, 33, 51.
  • a transmitter of magnetostrictive energy 55 and a receiver of the reflected energy 57 are shown positioned at the upper end of the element.
  • a timer 59 is set by a control 61 when the energy is transmitted and is stopped when the reflected energy is received, thus giving a measure of the time taken for the energy to be transmitted along the element to the magnet and then returned to the receiver.
  • a display device 63 displays this measure and, by calibrating the device, the display device can be used to display a direct reading of the distance between the fixed and movable parts of the rolling mill.
  • the magnetostrictive waves transmitted along the element conveniently have a frequency of the order of 8 KHz/s.
  • the magnetostrictive element and the associated electronic equipment may be purchased from TEMPO SONICS of Long Island, New York, U.S.A.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Claims (7)

1. Laminoir qui comprend une partie fixe, une partie linéairement mobile par rapport à la partie fixe et un transducteur électrique pour indiquer la position de la partie mobile par rapport à la partie fixe, caractérisé en ce qu'il comprend un élément à magnétostriction (21, 45) fixé à l'une des parties (1, 41), un émetteur électronique (55) pour transmettre des signaux magnétostrictifs dans ledit élément (21, 45), un récepteur électronique (57) pour recevoir les signaux magnétostrictifs réfléchis le long dudit élément (21, 45), un élément magnétique (29, 33, 51) fixé à l'autre partie (15, 15', 43) et associé audit élément (21, 45) afin de produire un champ magnetique servant à réfléchir lesdits signaux transmis le long dudit élément (21, 45) vers ledit récepteur et un moyen chronométrique (59) pour mesurer l'intervalle de temps qui s'écoule entte l'émission et la réception desdits signaux, cet intervalle de temps étant représentatif de l'espacement desdites parties.
2. Laminoir selon la revendication 1, caractérisé en ce que l'émetteur (55) et le récepteur (57) sont logés dans une boîte (23, 47) située à l'une des extrémités de l'élément (21, 45).
3. Laminoir selon la revendication 1 ou 2, caractérisé en ce que l'élément (21) est fixe et s'étend dans l'ouverture (25) d'une vis (15) afin d'élever et d'abaisser une partie mobile (5) du laminoir, tandis que l'élément magnétique (29) est fixé à la vis (15).
4. Laminoir selon la revendication 1 ou 2, caractérisé en ce que l'élément (21) est fixe et s'avance dans un tube (31) monté sur l'extrémité supérieure d'une vis (15') destinée à élever et à abaisser une partie mobile du laminoir, l'élément magnétique (33) étant fixé au tube (31 ).
5. Laminoir selon la revendication 3 ou 4, caractérisé en ce que l'élément magnétique est un aimant permanent annulaire (29, 33).
6. Laminoir selon la revendication 1 ou 2, caractérisé en ce que les parties mobile (43) et fixe (41) sont les parties respectives d'un vérin hydraulique (39) faisant partie du laminoir.
7. Laminoir selon la revendication 6, caractérisé en ce que le vérin (39) est interposé entre la face inférieure du palier (37) de l'ensemble de cylindres inférieure et la face supérieure d'une partie de la cage fixe (1) du laminoir, l'élément (45) s'abaissant verticalement de la partie fixe (41) du vérin, tandis que l'élément magnétique (51) se déplace avec la partie mobile (43) dudit vérin.
EP81303208A 1980-07-16 1981-07-13 Laminoir Expired EP0044222B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81303208T ATE8212T1 (de) 1980-07-16 1981-07-13 Walzwerk.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8023229 1980-07-16
GB8023229 1980-07-16

Publications (3)

Publication Number Publication Date
EP0044222A2 EP0044222A2 (fr) 1982-01-20
EP0044222A3 EP0044222A3 (en) 1982-04-21
EP0044222B1 true EP0044222B1 (fr) 1984-07-04

Family

ID=10514811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81303208A Expired EP0044222B1 (fr) 1980-07-16 1981-07-13 Laminoir

Country Status (4)

Country Link
EP (1) EP0044222B1 (fr)
JP (1) JPS5744407A (fr)
AT (1) ATE8212T1 (fr)
DE (1) DE3164559D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008004540A1 (de) 2008-01-15 2009-07-16 Sms Demag Ag Anordnung zur Walzspaltregelung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0820225B2 (ja) * 1992-07-20 1996-03-04 科学技術庁航空宇宙技術研究所長 細い線の径あるいは幅を測定する装置
IT1304331B1 (it) * 1997-06-24 2001-03-15 Danieli Off Mecc Sistema di controllo della configurazione dei cilindri diappoggio in gabbie di laminazione a quarto e relativo
JP5081699B2 (ja) * 2008-04-02 2012-11-28 新日鉄エンジニアリング株式会社 圧延ロールギャップ調整方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216231A (en) * 1960-11-07 1965-11-09 Wisconsin Alumni Res Found Control apparatus
DE1285431B (de) * 1963-05-08 1968-12-19 Verwaltungsgesellschaft Moelle Induktions-Messlehre zum Einstellen und laufenden Messen des Walzspaltes in automatisch geregelten Walzgeruesten
US3404551A (en) * 1966-05-12 1968-10-08 Gen Dynamics Corp Ultrasonic gauging and control
US3559432A (en) * 1968-05-29 1971-02-02 Textron Inc Roll gap gage control
DE2622505C2 (de) * 1976-05-20 1985-04-04 Mannesmann AG, 4000 Düsseldorf Meßgerät zur Messung des Walzenspaltes in dickengeregelten Walzgerüsten

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008004540A1 (de) 2008-01-15 2009-07-16 Sms Demag Ag Anordnung zur Walzspaltregelung
DE102008004540B4 (de) * 2008-01-15 2014-12-11 Sms Siemag Aktiengesellschaft Anordnung zur Walzspaltregelung

Also Published As

Publication number Publication date
ATE8212T1 (de) 1984-07-15
DE3164559D1 (en) 1984-08-09
EP0044222A3 (en) 1982-04-21
EP0044222A2 (fr) 1982-01-20
JPS5744407A (en) 1982-03-12

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