US3621694A - Rolling mill - Google Patents

Rolling mill Download PDF

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Publication number
US3621694A
US3621694A US29976A US3621694DA US3621694A US 3621694 A US3621694 A US 3621694A US 29976 A US29976 A US 29976A US 3621694D A US3621694D A US 3621694DA US 3621694 A US3621694 A US 3621694A
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United States
Prior art keywords
rolls
roll
housing
rolling mill
rolling
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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 - Lifetime
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US29976A
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English (en)
Inventor
Joseph Irwin Greenberger
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United Engineering and Foundry Co
United Engineering Inc
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United Engineering and Foundry Co
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Publication of US3621694A publication Critical patent/US3621694A/en
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP.OF OH
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP. OH.
Assigned to UNITED ENGINEERING ROLLING MILLS, INC. reassignment UNITED ENGINEERING ROLLING MILLS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WEAN INCORPORATED
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/12—Toothed-wheel gearings specially adapted for metal-rolling mills; Housings or mountings therefor
    • 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
    • B21B13/06—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged vertically, e.g. edgers
    • 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
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/22—Hinged chocks

Definitions

  • ABSTRACT OF THE DISCLOSURE This invention relates to a rolling mill and, for the purpose of description, to a vertical mill of the type employed as an integral part of a continuous casting plant.
  • the disclosure of the present invention illustrates a very compact rolling mill so constructed that each overhung vertical roll is horizontally displaceable about a fixed axis of a driving pinion located beneath the rolls.
  • the rolls are movable towards and away from each other to vary the roll gap by a common piston cylinder assembly which urges the supporting housing of the rolls against a common adjustable stop that establishes the roll gap.
  • the object of the present invention therefore, to provide a group of rolling mills, in which the mills may be horizontal or vertical mills, characterized by being very compact in construction so that they may be employed in an in-line rolling arrangement of a continuous casting plant and wherein, in the case of a vertical mill, its rollers are driven by the spindleless drive from beneath the rolls.
  • FIG. 1 is a plan view illustrating the arrangement of four separate vertical mills built in accordance with the present invention, each receiving and rolling heated workpieces issuing from a continuous casting machine, not shown;
  • FIG. 2 is a sectional view of one of the vertical mills illustrated in FIG. 1 taken on line II-II of FIG. 3;
  • FIG. 3 is a sectional view of the mill illustrated in FIG. 2 taken on line III-III thereof.
  • the four arrows indicate the path of the workpieces issuing from the continuous casting machine, not shown.
  • the four illustrated mills 10, 11, 12 and 13 are identical and, as will be noted later, each is driven by separate motor-gear reduction sets 15 and 16.
  • the reduction units are connected to the mills by drive shafts 117.
  • FIGS. 2 and 3 The construction of the mills is best shown in FIGS. 2 and 3, and in referring to these figures, there is provided a housing 9, to be described later, which receives a pair of overhung sleeve rolls, only one being shown at 18, the contour of which reflects the fact that it is designed to reduce a square-shaped, cross-sectional workpiece. Since the roll assemblies and their driving components are similar, only one will be described although similar reference numerals will be applied to both assemblies and components.
  • the roll 18 is secured to a shaft 19 by a cooperative pair of tapered keys 21. Below the roll supporting portion of the shaft 19, the shaft takes the form of a. journal which receives one of two bearings 22. At the lower end of the shaft 19 there is a.
  • the frame 24 pivots by reasons of there being provided at the bottom of the frame a sleeve 25 rotatably supported by the housing 9 through a bushing 26. At the top the frame 24 is rotatably secured to the housing 9 by means of a stub shaft 27 by a bushing 28. As shown in FIG. 2, the frame contains a shaft 29 received in bearings 30 and to which a second pinion 31 is integrally formed and arranged to mesh with the pinion 23.
  • the gear wheel 32 is driven by a. worm 33 that extends beneath the entire mill assembly in a direction away from the path of the workpieces where the worm 33 is connected by the coupling 34 to the drive shaft 17, as shown in FIG. .1.
  • the wheel 32 is supported by the bearings 35 and 36 which are mounted in a sub-base 37 that is connected to and supports the main housing 9.
  • the driving arrangement for the roll does not employ a universal coupling so that one of the serious objections to prior mills has been. eliminated.
  • FIG. 1 With reference to the Worms provided for driving the gear wheels, it will be noted in FIG. 1 that a separate worm and wheel unit is provided for each roll 18, which, in view of the opposite rotation of the rolls, the units are opposite hand, yet driven from a common drive shaft 17.
  • the main housing 9 consists essentially of an integral casting shaped in the form of a U-shaped housing, the lower portion or horizontal portion 38 being that shown in FIG. 2 and supported by the sub-base 37, and the vertical portion 301: being seen at the top of FIG. 3.
  • the housing takes the form of a rigid chair-like section 4 1, the upright portion thereof identified as 42 which runs along the side of the entire housing 9.
  • a removable horizontal cross-separator 39 which is rigidly secured to the vertical legs 30a of the main housing 9.
  • the main housing is enclosed in an outer casing 43 in which at the bottom thereof there are provided drain openings 44 and 45 which will allow water and scale that may get into the spacing between the housing 9 and the casing 43 to run off.
  • each of the rolls 18 of the mill is adapted to be displaced about the axis of the pinion 31.
  • the pinion 23 moves around the pinion 31 as it is being driven by the latter.
  • the top of the casing 43 is provided with openings to accommodate this movement.
  • a slidable wedge-shaped member 46 guided in a block 47 formed as part of the housing 9.
  • circular blocks 48 having fiat machined surfaces to contact the wedge 46.
  • the wedge is driven in a direction to separate the frames 24 by a jack 49, the jack being driven by a reducer unit 51 and a motor '52.
  • a selsyn transmitter 53 At the other end of the jack there is provided a selsyn transmitter 53 which will be associated with an indicator reflecting the distance between the rolls 18 and, hence, the roll gap.
  • the jack reduction unit and motor, as well as the selsyn 53 are mounted on the chair section 41 of the housing 9.
  • the rolls 1-8 are urged in a direction opposing the rolling pressure so as to bring their frames 24 into contact with the wedge 46- by a piston cylinder assembly 54, the cylinder end being connected to the one frame by an arm 55 while the piston end is connected to the other frame by an arm 56.
  • the pressure of the cylinder is set at a value slightly in excess of the maximum. expected normal rolling pressure.
  • the gap of the mill will be set before the material has issued from the casting machine and before any pressure is applied to the cylinder 54 by operating the motor 52 to advance or retract the wedge 46, as the case may be, so as to separate the rolls the desired amount, which amount will be gauged by the selsyn 53 and, hence, conveyed to the operator.
  • the rolls will be separated so as to allow the starter head to which the workpiece has solidified in the casting process and which has been disconnected from the dummy bar prior to going to the mill to pass between the rolls, immediately following which the cylinder '54 will be operated to bring the rolls into their rolling position which is defined by the members 48 contacting the wedge 46.
  • the pressure in the cylinder will be greater than what is needed to perform the necessary reduction, thereby assuring that a constant reduction will be taken. Should there be developed, for some reason, a greater rolling pressure than the pressure in the cylinder and of the order that would infiect possible damage to the various parts of the rolling mill, the rolls will automatically be allowed to move away from the wedge 46 upon the pressure in the cylinder 54 being overcome by the excessive rolling pressure.
  • the present invention provides not only an arrangement that will allow the sleeve rolls to be quickly removed and replaced, but one in which the entire mill can be removed in a vert short time.
  • the sleeve rolls 18 are simply removed 'by removing the keys 21 and replacing the old sleeve rolls with the new ones. If it is desired to remove the entire mill, all that needs to be done is for the bolts, not shown, that connect the frame 37 to the foundation to be loosened, the coupling 34 disconnected, and the entire mill with its main drive can be carried away and replaced by a new one.
  • a rolling mill comprising:
  • a housing for rotatably supporting in projecting fashion a pair of cooperative rolls
  • each cooperative set of gears being such that the displaceable gears move in a fixed arcuate path about said nondisplaceable gears while in a meshing relationship with the latter,
  • an adjustable stop wedge means engageable by both of said roll assemblies in a manner only to restrain the assemblies in a direction to establish a roll gap between the rolls
  • a force-generating means connected to both of said roll assemblies for moving said roll assemblies towards and away from each other and for restraining the roll assemblies under a controlled pressure against said stop wedge means in a direction opposing the rolling force developed by said rolls.
  • said U-shaped frame also includes a rigid chair-like section having a projection extending along the side of said housing opposite said opening,
  • said U-shaped frame includes a removable cross-separator adapted to be rigidly connected to the parallel sides of said frame.
  • said outer casing having at least one opening to allow water and scale to escape from the interior of the casing.
  • each cartridge for supporting a difierent one of said pivot and drive shafts
  • said cartridge including means for rotatably support ing said shaft and roll of its associated roll assembly.
  • each cartridge includes an arm projecting away from said roll
  • said force generating means comprising a piston cylinder assembly having its piston connected to the arm of one of said cartridges and the cylinder thereof connected to the arm of said other cartridge in a manner to create a self-contained force system.
  • said sub-base having an opening
  • said common drive means includes a drive shaft arranged normal to the plane containing the axes of rotation of said nondisplaceable gears and carrying separate worm gears for each of said nondisplaceable gears, and
  • An arrangement of rolling mill stands for individually rolling closely spaced-apart workpieces delivered to the stands in a common horizontal plane comprising:
  • each stand including a pair of cooperative vertical rolls and comprising a housing for rotatably supporting a pair of first shafts,
  • each cooperative set of gears being such that the first gears are allowed to move in a fixed arcuate path about said second geare while in a driving relationship with the latter,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US29976A 1969-05-05 1970-04-20 Rolling mill Expired - Lifetime US3621694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2285369 1969-05-05

Publications (1)

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US3621694A true US3621694A (en) 1971-11-23

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US (1) US3621694A (enrdf_load_stackoverflow)
CA (1) CA924140A (enrdf_load_stackoverflow)
GB (1) GB1288934A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786664A (en) * 1972-03-20 1974-01-22 Steel Corp Rolling mill module
US4119138A (en) * 1976-08-02 1978-10-10 United States Steel Corporation Straightener for a multistrand continuous-casting machine
US4457155A (en) * 1982-03-03 1984-07-03 White Consolidated Industries, Inc. Overhung bar rolling mill stand and two-axis gauge control system
US4502311A (en) * 1982-12-08 1985-03-05 White Consolidated Industries, Inc. Apparatus and method for press-edging hot slabs
US4944664A (en) * 1989-09-19 1990-07-31 Allred Cecil F Concrete wall form apparatus
US5911781A (en) * 1996-12-02 1999-06-15 Tippins Incorporated Integral coiler furnace drive motor
US6397924B1 (en) * 1997-09-18 2002-06-04 Ishikawajima-Harima Heavy Industries Company Limited Strip casting apparatus
CN102974620A (zh) * 2012-11-30 2013-03-20 天津市电视技术研究所 轧制无缝钢管用顶杆单辊自动调整装置
GB2531073A (en) * 2014-10-10 2016-04-13 Teng Pong David Method and apparatus for producing steel intermediate products

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786664A (en) * 1972-03-20 1974-01-22 Steel Corp Rolling mill module
US4119138A (en) * 1976-08-02 1978-10-10 United States Steel Corporation Straightener for a multistrand continuous-casting machine
US4457155A (en) * 1982-03-03 1984-07-03 White Consolidated Industries, Inc. Overhung bar rolling mill stand and two-axis gauge control system
US4502311A (en) * 1982-12-08 1985-03-05 White Consolidated Industries, Inc. Apparatus and method for press-edging hot slabs
US4944664A (en) * 1989-09-19 1990-07-31 Allred Cecil F Concrete wall form apparatus
US5911781A (en) * 1996-12-02 1999-06-15 Tippins Incorporated Integral coiler furnace drive motor
US6397924B1 (en) * 1997-09-18 2002-06-04 Ishikawajima-Harima Heavy Industries Company Limited Strip casting apparatus
CN102974620A (zh) * 2012-11-30 2013-03-20 天津市电视技术研究所 轧制无缝钢管用顶杆单辊自动调整装置
CN102974620B (zh) * 2012-11-30 2014-11-26 天津市电视技术研究所 轧制无缝钢管用顶杆单辊自动调整装置
GB2531073A (en) * 2014-10-10 2016-04-13 Teng Pong David Method and apparatus for producing steel intermediate products
GB2531164A (en) * 2014-10-10 2016-04-13 Teng Pong David Method and apparatus for producing steel intermediate products
GB2531164B (en) * 2014-10-10 2016-10-12 Teng Pong David Method and apparatus for producing steel intermediate products

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Publication number Publication date
GB1288934A (enrdf_load_stackoverflow) 1972-09-13
CA924140A (en) 1973-04-10

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AS Assignment

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP.OF OH;REEL/FRAME:004458/0765

Effective date: 19850610

AS Assignment

Owner name: PITTSBURGH NATIONAL BANK,PENNSYLVANIA

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

AS Assignment

Owner name: UNITED ENGINEERING ROLLING MILLS, INC.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WEAN INCORPORATED;REEL/FRAME:004920/0256

Effective date: 19880610