US3477268A - Device for shaping metal bars - Google Patents

Device for shaping metal bars Download PDF

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Publication number
US3477268A
US3477268A US652095A US3477268DA US3477268A US 3477268 A US3477268 A US 3477268A US 652095 A US652095 A US 652095A US 3477268D A US3477268D A US 3477268DA US 3477268 A US3477268 A US 3477268A
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United States
Prior art keywords
rolls
rockers
metal bars
pair
shaping metal
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Expired - Lifetime
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US652095A
Inventor
Rudolf Schoffmann
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Voestalpine AG
Voest AG
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Voestalpine AG
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    • 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
    • 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
    • B21B13/22—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for rolling metal immediately subsequent to continuous casting, i.e. in-line rolling of steel
    • 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
    • B21B31/28—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by toggle-lever mechanisms
    • 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
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/22—Hinged chocks

Definitions

  • the rolls of each pair are supported on respective rockers that are hinged at one end and pivotally adjustable by hydraulic means to vary the spacing between rolls.
  • Synchronization means couple the rockers of each mill to divide the movement provided by the shifting means equally between the rockers to obtain symmetrical movement of the rolls relative to the center line of the gap between the rolls.
  • the invention relates to an apparatus for shaping metal bars, particularly in connection with a continuous casting plant, said apparatus comprising rolling mills which are arranged in a row one after the other and contain pairs of rolls, the bar being continuously shaped in the roll gap of said rolling mills, of which suitably one having horizontally arranged rolls alternates with one having vertically arranged rolls.
  • a problem in the operation of continuous casting plants is the fabrication of metal bars of small crosssection, which can immediately be processed in small section rolling mills.
  • the cast bar leaves the mould with a cross-section which is usually larger than 80 x 80 mm.
  • the cross-section of this bar has to be reduced on a cogging train.
  • cogging trains where suitably rolling mills having horizontally arranged rolls alternate with such having vertically arranged rolls, difiiculties are involved in guiding the bar level with the roll gaps of the consecutive roll stands.
  • the present invention has as its object to avoid these disadvantages and difiiculties and consists in a device of the afore-mentioned kind, wherein the rolls of each pair of rolls are supported on rockers movable over a large adjusting range, a synchronization means for swinging both rockers of each pair being provided, which enforces a symmetrical adjusting of the upper and lower rolls relative to the center line of the roll gap.
  • a hydraulic cylinder which is hinged to the ends of the rockers, is suitably provided for operating the rockers.
  • the means for synchronization of a pair of rockers may consist, according to a preferred embodiment of the invention, of a pair of tongs or a fork provided on one rocker, a tooth provided on the other rocker meshing therewith.
  • the contact surfaces of fork and tooth are suitably made of a wear-resistant material of good sliding properties.
  • FIG. 1 is a ground-plan and FIG. 2 an elevation of the plant.
  • FIGS. 3 and 4 demonstrate the operating of a pair of rockers and the functioning of the synchronization means, FIG. 3 showing the pair or rockers with the rolls in adjusted position, FIG. 4 in open position.
  • FIGS. 5 and 6 illustrate a modified embodiment of the synchronization means, FIG. 5 again showing the adjusted position and FIG. 6 the opened position.
  • FIGS. 1 and 2 show rolling mills having horizontally arranged rolls alternating with rolling mills having vertically arranged rolls.
  • the first rolling mill having horizontally arranged rolls is designated by 1, the following having vertically arranged rolls by 2, the following having horizontally arranged rolls by 3, and the following, again having vertically arranged rolls, by 4.
  • Each rolling mill has a motor and a gear, numbered M M M M and G G G G respectively.
  • the gears are mounted on the base-plate 5 of the machine.
  • Bearing bolts 6, 6 project from the gears, the rockers 7, 7 being hingedly mounted thereon with one end.
  • These rockers carry rolls 8, 8' enclosing the roll gap 9.
  • the other ends of the two rockers 7, 7 are connected by a hydraulic cylinder 10. When it is operated, the rockers are opened and closed and the roll gap between rolls 8, 8' can thus be adjusted.
  • Numeral 11 denotes the synchronization means, which is illustrated in detail in FIGS. 3 and 4.
  • the embodiment of the synchronization means as shown in FIGS. 3 and 4 comprises a pair of tongs or a fork 12 provided on rocker 7, a tooth 13 provided on the other rocker 7' meshing therewith.
  • This tooth has a cylindrical contact surface 14 rotatable in a cylindrical recess of the fork 12.
  • the contact surface 14 is suitably made of a wear-resistant material of good sliding properties.
  • FIG. 4 shows that the rockers 7, 7' are movable away from the center line 15 of the roll gap only around substantially equal angles.
  • the plant according to the invention enables a continuous reducing of the bars without employment of a cogging train, avoids excessive preparatory work as necessary in known plants, and furnishes a product which can immediately be processed in small-section mills, e.g. for manufacturing rods or the like.
  • Apparatus for shaping metal bars comprising, a plurality of rolling mills arranged in a row one behind the other, said respective rolling mills alternately having horizontally and vertically arranged rolls, each of said mills havilng a pair of working rolls containing a roll gap for continuous shaping of said bars, a rocker hinged adjacent one end for supporting each of said rolls, shifting means coupled between the rockers supporting the respective rolls of each pair for pivotally moving said rockers over a large adjusting range, and synchronization means for dividing the adjustment provided by said shifting means equally to both rockers of each pair to obtain symmetrical movement of both said working rolls relative to the center line of said roll gap.
  • said shifting means comprises hydraulic means hinged to said rockers at the other ends thereof.
  • Apparatus for shaping metal bars comprising, a plurality of rolling mills arranged in a row one behind the other, said respective rolling mills alternately having horizontally and vertically arranged rolls, each of said mills having a pair of working rolls containing a roll gap for continuous shaping of said bars, a rocker for supporting each of said rolls, shifting means coupled between the rockers supporting the respective rolls of each pair for moving said rockers over a large adjusting range, and synchronization means including tongs provided on one of said rockers and a cooperating tooth provided on the other of said rockers and meshing with said tongs, the contacting surfaces of said tongs and tooth being of wear resistant material having good sliding properties,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Description

Nov. 11, 1969 R. SCHOFFMANN 3,477,268
DEVICE FOR SHAPING METAL BARS Filed July 10, 1967 4 Sheets-Sheet 1 FIG.
k0 INVENTOR RUDOLF SCH CSFFMANN mgif/sw w HIS ATTORNEYS Nov. 11, 1969 R. SCHGFFMANN 3,477,268
DEVICE FOR SHAPING METAL BARS Filed July 10, 1967 4 Sheets-Sheet 2 FIG? [NVENTOR RUDOLF SCHOFFMANN H IS ATTORNEYS Nov. 11, 1969 Filed July 10, 1967 FIG. 3
R. SCHOFFMAN N DEVICE FOR SHAPING METAL BARS 4 Sheets-Sheet 3 INVENTOR RUDOLF SCHGFFMANN HIS AT TORN EYS Nov. 11, 1969 R. SCHOFFMANN DEVICE FOR SHAPING METAL BARS 4 Sheets-Sheet 4 Filed July 10, 1967 [NVENTOR RUDOLF SCHOFFMANN- HIS ATTORNEYS United States Patent US. Cl. 72-234 3 Claims ABSTRACT OF THE DISCLOSURE Apparatus for shaping metal bars is described, comprising a plurality of rolling mills arranged in a row, with the directions of the rolls on successive mills alternating between horizontal and vertical. The rolls of each pair are supported on respective rockers that are hinged at one end and pivotally adjustable by hydraulic means to vary the spacing between rolls. Synchronization means couple the rockers of each mill to divide the movement provided by the shifting means equally between the rockers to obtain symmetrical movement of the rolls relative to the center line of the gap between the rolls.
The invention relates to an apparatus for shaping metal bars, particularly in connection with a continuous casting plant, said apparatus comprising rolling mills which are arranged in a row one after the other and contain pairs of rolls, the bar being continuously shaped in the roll gap of said rolling mills, of which suitably one having horizontally arranged rolls alternates with one having vertically arranged rolls.
A problem in the operation of continuous casting plants is the fabrication of metal bars of small crosssection, which can immediately be processed in small section rolling mills. In the usual plants, the cast bar leaves the mould with a cross-section which is usually larger than 80 x 80 mm. The cross-section of this bar has to be reduced on a cogging train. On such cogging trains, where suitably rolling mills having horizontally arranged rolls alternate with such having vertically arranged rolls, difiiculties are involved in guiding the bar level with the roll gaps of the consecutive roll stands. As only one roll, usually the upper roll, of known plants can be adjusted during the rolling process, it is necessary to adjust the other (lower) roll in advance, eg by base-plates or supports or by hand-operated adjusting means, to the desired feed axis. A large amount of preparatory work is connected therewith. A further disadvantage of the known plants resides in the fact that the adjusting range of the work rolls is too small, so that bars having the large cross-section of the mould cannot pass the roll gap.
The present invention has as its object to avoid these disadvantages and difiiculties and consists in a device of the afore-mentioned kind, wherein the rolls of each pair of rolls are supported on rockers movable over a large adjusting range, a synchronization means for swinging both rockers of each pair being provided, which enforces a symmetrical adjusting of the upper and lower rolls relative to the center line of the roll gap.
A hydraulic cylinder, which is hinged to the ends of the rockers, is suitably provided for operating the rockers. The means for synchronization of a pair of rockers may consist, according to a preferred embodiment of the invention, of a pair of tongs or a fork provided on one rocker, a tooth provided on the other rocker meshing therewith. The contact surfaces of fork and tooth are suitably made of a wear-resistant material of good sliding properties.
The invention is illustrated in the drawing by way of an embodiment thereof. FIG. 1 is a ground-plan and FIG. 2 an elevation of the plant. FIGS. 3 and 4 demonstrate the operating of a pair of rockers and the functioning of the synchronization means, FIG. 3 showing the pair or rockers with the rolls in adjusted position, FIG. 4 in open position. FIGS. 5 and 6 illustrate a modified embodiment of the synchronization means, FIG. 5 again showing the adjusted position and FIG. 6 the opened position.
FIGS. 1 and 2 show rolling mills having horizontally arranged rolls alternating with rolling mills having vertically arranged rolls. The first rolling mill having horizontally arranged rolls is designated by 1, the following having vertically arranged rolls by 2, the following having horizontally arranged rolls by 3, and the following, again having vertically arranged rolls, by 4. Each rolling mill has a motor and a gear, numbered M M M M and G G G G respectively.
As evident from FIG. 2, the gears are mounted on the base-plate 5 of the machine. Bearing bolts 6, 6 project from the gears, the rockers 7, 7 being hingedly mounted thereon with one end. These rockers carry rolls 8, 8' enclosing the roll gap 9. The other ends of the two rockers 7, 7 are connected by a hydraulic cylinder 10. When it is operated, the rockers are opened and closed and the roll gap between rolls 8, 8' can thus be adjusted. Numeral 11 denotes the synchronization means, which is illustrated in detail in FIGS. 3 and 4.
The embodiment of the synchronization means as shown in FIGS. 3 and 4 comprises a pair of tongs or a fork 12 provided on rocker 7, a tooth 13 provided on the other rocker 7' meshing therewith. This tooth has a cylindrical contact surface 14 rotatable in a cylindrical recess of the fork 12. The contact surface 14 is suitably made of a wear-resistant material of good sliding properties.
The functioning of the synchronization means is illustrated in FIG. 4, which shows that the rockers 7, 7' are movable away from the center line 15 of the roll gap only around substantially equal angles.
In the modified embodiment of the synchronization means, as shown in FIGS. 5 and 6, the tooth 13 of rocker 7 engages in the recess 16 of tongs 12 as in a spur gear. The two rockers 7, 7' are movable away from the center line 15 of the roll gap only around equal angles (a' and a), as shown in FIG. 6. Thus, an accurate synchronism is safeguarded.
Owing to the large adjusting range of the rolls and the forced synchronization, the plant according to the invention enables a continuous reducing of the bars without employment of a cogging train, avoids excessive preparatory work as necessary in known plants, and furnishes a product which can immediately be processed in small-section mills, e.g. for manufacturing rods or the like.
What I claim is:
1. Apparatus for shaping metal bars comprising, a plurality of rolling mills arranged in a row one behind the other, said respective rolling mills alternately having horizontally and vertically arranged rolls, each of said mills havilng a pair of working rolls containing a roll gap for continuous shaping of said bars, a rocker hinged adjacent one end for supporting each of said rolls, shifting means coupled between the rockers supporting the respective rolls of each pair for pivotally moving said rockers over a large adjusting range, and synchronization means for dividing the adjustment provided by said shifting means equally to both rockers of each pair to obtain symmetrical movement of both said working rolls relative to the center line of said roll gap.
2. Apparatus as set forth in claim 1 wherein said shifting means comprises hydraulic means hinged to said rockers at the other ends thereof.
3. Apparatus for shaping metal bars comprising, a plurality of rolling mills arranged in a row one behind the other, said respective rolling mills alternately having horizontally and vertically arranged rolls, each of said mills having a pair of working rolls containing a roll gap for continuous shaping of said bars, a rocker for supporting each of said rolls, shifting means coupled between the rockers supporting the respective rolls of each pair for moving said rockers over a large adjusting range, and synchronization means including tongs provided on one of said rockers and a cooperating tooth provided on the other of said rockers and meshing with said tongs, the contacting surfaces of said tongs and tooth being of wear resistant material having good sliding properties,
1,858,788 5/1933 Rohn 72-235 2,774,263 12/1956 Leufven 72-248 3,269,161 8/1966 Greis 72-249 3,309,909 3/1967 Wilson 72237 3,336,781 8/1967 Wilson et al. 72248 MILTON S. MEHR, Primary Examiner US. Cl. X.R. 72-245
US652095A 1967-02-03 1967-07-10 Device for shaping metal bars Expired - Lifetime US3477268A (en)

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AT102067A AT280193B (en) 1967-02-03 1967-02-03 Device for shaping metal strands

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AT (1) AT280193B (en)
BE (1) BE710251A (en)
CH (1) CH475042A (en)
DE (2) DE1652569A1 (en)
ES (1) ES350111A1 (en)
FR (1) FR1552647A (en)
GB (1) GB1212891A (en)
SE (1) SE319144B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575028A (en) * 1969-01-28 1971-04-13 Blaw Knox Co Rolling mills
US3628594A (en) * 1969-01-13 1971-12-21 Koppers Co Inc Apparatus for reducing the cross section of a continuous cast strand
US3718026A (en) * 1969-06-07 1973-02-27 Inst Melaturgue Zelaza Cluster mill with cantilevered rolls
DE2221785A1 (en) * 1972-05-04 1973-11-15 Horst Liebert PRESSURE SYSTEM FOR WORK ROLLERS OF ROLL PRINTING MACHINES
US4502311A (en) * 1982-12-08 1985-03-05 White Consolidated Industries, Inc. Apparatus and method for press-edging hot slabs
US4759485A (en) * 1985-03-01 1988-07-26 Sms Schloemann-Siemag Ag Apparatus for advancing strip in rolling mills
US4991420A (en) * 1987-08-26 1991-02-12 Lauener Engineering Ag Roller nip adjustment device
CN116618445A (en) * 2023-07-24 2023-08-22 山东高原油气装备有限公司 Hot rolling device for processing deformation-preventing steel pipe
EP3756785B1 (en) * 2019-06-20 2024-10-09 University Of Science And Technology Beijing Skew rolling mill with dual-rotatable-shafts

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU753503A1 (en) * 1977-07-26 1980-08-07 Челябинский политехнический институт им. Ленинского комсомола Rolling mill stand with four-roll pass
DE2923108C2 (en) * 1978-01-04 1986-05-15 Voest-Alpine Ag, Linz Driving roll stand for a continuous caster

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1858788A (en) * 1925-08-08 1932-05-17 Rohn Wilhelm Julius Paul Rolling mill
US2774263A (en) * 1945-02-05 1956-12-18 Skf Svenska Kullagerfab Ab Rolling mill
US3269161A (en) * 1964-03-30 1966-08-30 Kinefac Corp Die roll forming and finishing machine
US3309909A (en) * 1963-02-06 1967-03-21 Wilson Alexander Ian Mills for rolling metal
US3336781A (en) * 1964-08-24 1967-08-22 Morgan Construction Co Rolling mill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1858788A (en) * 1925-08-08 1932-05-17 Rohn Wilhelm Julius Paul Rolling mill
US2774263A (en) * 1945-02-05 1956-12-18 Skf Svenska Kullagerfab Ab Rolling mill
US3309909A (en) * 1963-02-06 1967-03-21 Wilson Alexander Ian Mills for rolling metal
US3269161A (en) * 1964-03-30 1966-08-30 Kinefac Corp Die roll forming and finishing machine
US3336781A (en) * 1964-08-24 1967-08-22 Morgan Construction Co Rolling mill

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3628594A (en) * 1969-01-13 1971-12-21 Koppers Co Inc Apparatus for reducing the cross section of a continuous cast strand
US3575028A (en) * 1969-01-28 1971-04-13 Blaw Knox Co Rolling mills
US3718026A (en) * 1969-06-07 1973-02-27 Inst Melaturgue Zelaza Cluster mill with cantilevered rolls
DE2221785A1 (en) * 1972-05-04 1973-11-15 Horst Liebert PRESSURE SYSTEM FOR WORK ROLLERS OF ROLL PRINTING MACHINES
US3845708A (en) * 1972-05-04 1974-11-05 H Liebert Machine for compacting, pelletizing and/or briquetting
US4502311A (en) * 1982-12-08 1985-03-05 White Consolidated Industries, Inc. Apparatus and method for press-edging hot slabs
US4759485A (en) * 1985-03-01 1988-07-26 Sms Schloemann-Siemag Ag Apparatus for advancing strip in rolling mills
US4991420A (en) * 1987-08-26 1991-02-12 Lauener Engineering Ag Roller nip adjustment device
EP3756785B1 (en) * 2019-06-20 2024-10-09 University Of Science And Technology Beijing Skew rolling mill with dual-rotatable-shafts
CN116618445A (en) * 2023-07-24 2023-08-22 山东高原油气装备有限公司 Hot rolling device for processing deformation-preventing steel pipe
CN116618445B (en) * 2023-07-24 2023-09-15 山东高原油气装备有限公司 Hot rolling device for processing deformation-preventing steel pipe

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DE1652569B2 (en) 1973-09-20
GB1212891A (en) 1970-11-18
DE1652569C3 (en) 1974-04-11
CH475042A (en) 1969-07-15
DE6603058U (en) 1969-08-14
SE319144B (en) 1970-01-12
DE1652569A1 (en) 1971-07-08
ES350111A1 (en) 1969-04-16
FR1552647A (en) 1969-01-03
BE710251A (en) 1968-06-17
AT280193B (en) 1970-04-10

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