US3702554A - Roll positioning means for a rolling mill - Google Patents

Roll positioning means for a rolling mill Download PDF

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Publication number
US3702554A
US3702554A US171653A US3702554DA US3702554A US 3702554 A US3702554 A US 3702554A US 171653 A US171653 A US 171653A US 3702554D A US3702554D A US 3702554DA US 3702554 A US3702554 A US 3702554A
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United States
Prior art keywords
roll
movement
rolling mill
piston
force applying
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Expired - Lifetime
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US171653A
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English (en)
Inventor
Charles Storer Shumaker
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United Engineering Inc
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Wean United Inc
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Publication of US3702554A publication Critical patent/US3702554A/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 WEAN UNITED, INC. reassignment WEAN UNITED, INC. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). TO RELEASE SECURTIY DOCUMENT RECORDED AT REEL, FRAME 4792/307 RECORDED FEB. 26, 1987 Assignors: PITTSBURGH NATIONAL BANK
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
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device

Definitions

  • ABSTRACT Primary Examiner-Milton S. Mehr Attomey-l-lenry C. Westin [57] ABSTRACT
  • the disclosure of this application relates to a rolling mill which includes a bar spring and a load cell as part of its gauge control mechanism. Associated with the spring and cell is a jack that adjusts the position of the spring to its optimum working position when the spring would otherwise be moved out of such a position on the insertion into the mill of difierent sized 10 cl m, SDmwins V,
  • the roll positioning indicator includes a beamspring device which serves to transfer a portion of a rolling load to a pair of load cells.
  • an improved rolling mill including an adjustable means for the roll position indicator thereof and a simplified design that allows the indicator to be located in a place where maintenance can be performed quickly.
  • FIG. 1 is an elevational view, partly in section, of a rolling mill incorporating the features of the present invention
  • FIG. 2 is an enlarged sectional view of one of the force applicator cylinders provided for in FIG. 1;
  • FIG. 3 is a sectional view of the lower portion of a rolling mill incorporating a second embodiment of the present invention
  • FIG. 4 is a broken view, partly in section, of the righthand roll positioning indicator of FIG. 3;
  • FIG. 5 is a partial plan view of the second embodiment of the present invention shown in FIGS. 3 and 4.
  • FIG. 1 there is illustrated the lower half of a rolling mill 10 comprising spaced-apart upright housings 11 and 12 through the windows of which there are received a pair of working rolls l3 and a pair of backing up rolls 14, FIG. 1 showing only the lower working roll 13 and its backing up roll 14.
  • FIG. 1 also shows, with reference to the left-hand side of the backup roll 14, a portion of one of its bearing chocks 15 which is received in a roll changing sled 16, that extends through the windows of the mill and which, during the roll changing operation, is adapted to remove the rolls from the windows by operating the piston cylinder assembly 17.
  • each housing force applicator means in the form of piston cylinder assemblies 21 and 22.
  • piston cylinder assemblies 21 and 22 are identical, FIG. 2 illustrating a section of the cylinder assembly 22.
  • FIGS. 1 and 2 With regard to the cylinder assemblies 21 and 22, it will be observed that they each consist of a stationary cylinder 23, the lower portion of which rests on the housing 11 or 12 which receives the piston 24 thereof, the upper end of which engages and serves to adjust the bearing chocks 15 of the lower backup roll 14 through the sled 16.
  • the piston 24 is held against rotation by a key 25 which is secured to an extension of the stationary piston cylinder assembly 23.
  • the interior of the piston 24 is provided with a perpendicularly formed opening 26, the vertical portion of which receives a piston cylinder assembly 27, the piston 28 of which extends upwardly in the opening 26.
  • the cylinder 29 of the assembly 27 is held in the opening 26 by the agency of a keeper plate 32 and a bolt 33.
  • a spring bar 34 Arranged perpendicular to each of the pistons 28 is a spring bar 34 having its one end projected over the piston 28 where it is confined by a wear plate 35 and its other end arranged remote from the piston 24 where its end also is confined by a wear plate 36. Between the two ends of the spring bar 34 there is provided a fulcrum 37 which is mounted to a stationary extension of the cylinder 23. As shown in both FIGS. 1 and 2 the outward end of the spring bar 34 is engaged by a vertical pin 38 that forms part of a load cell 39.
  • the cell may take the form of a number of commercially available units.
  • the load cell is mounted on a shaft 42 which is part of a jack assembly 43.
  • the shaft 42 is vertically displaceable upon rotation of the worm wheel 44 driven by the worm 45.
  • the worm is driven by a shaft 46, as shown best in FIG. 1, which shaft connects the jacks associated with both cylinders 21 and 22 and is driven by a motor 47 arranged at the drive side of the mill.
  • a bevel gear unit 48 connected to each jack 43 allows worm 45 to be disposed at a right angle to the shaft 46, as one views FIG. 1.
  • FIGS. 1 and 2 show that cell and jack assemblies are arranged in a remote and easily accessible position relative to the pistons 24 of the piston cylinder assemblies 22 and 23 and are enclosed by a protective cover 51.
  • FIG. 2 also illustrates, in full line, a representative deflection of the spring bar 34 which takes place when the rolling mill parts are subject to a rolling load and the gauge control system is functioning.
  • the function of the jacks 43 is to reposition the cells 39 so that the bars 34 can be brought to their horizontal or working positions. I
  • the control of the piston cylinder assemblies 29 and 22 will be from pressure control valves 49 interposed between pumps not shown and the cylinders and which, in turn, are controlled by an automatic gauge control system which may be similar to the support illustrated in FIG. 6 of the aforesaid Stone patent.
  • FIGS. 3, 4 and 5 many of the components and their functions are similar to what has been already described with reference to FIGS. 1 and 2, although they have been rearranged in certain cases.
  • certain new components have been added to the assembly particularly in the fact that two bar springs, cell and jack assemblies are provided for each of the applicator piston cylinder assemblies.
  • FIG. 3 illustrates piston cylinder assemblies 55 and 56, which adjust the lower backup roll through the bearing chocks 57 and 58. These chocks are mounted on the sled as illustrated in FIG. 1, a portion of the sled 59 being shown in FIG. 3.
  • the spring bars being arranged to associate with the center of the pistons, in the second embodiment, as illustrated in FIG.
  • spring bars 61 are associated with the movable cylinders 62.
  • the pistons 63 of the piston cylinder assemblies 55 and 56 are stationarily held and the cylinders 63 come into contact with the sled 59.
  • each cylinder 63 is inverted with respect to FIG. 1 and is provided with opposed projections 64.
  • Each projection has an opening which receives a slotted shaft 65 on which there are mounted on opposite ends slide members 66, this being best shown in FIG. 3.
  • a stationary nut 67 threadably receiving the shaft 65.
  • the slide members 66 at their lower portions are brought into engagement with a spring bar 61. In engagement with these lower portions and midway between their ends there is provided a fulcrum block 69.
  • the fulcrum block 69 is carried by a sliding block 72 which is received in a guide 73, the lower end of the 6 block 72 being supported and connected to a shaft 74 which is part of the jack assembly 75, the jack assembly being supported by the housing 76 of the mill stand.
  • FIG. 5 there is provided a pair of jack assemblies for each cylinder assembly 55 and 56.
  • the jacks are driven by a common motor drive 77 through bevel gear units 78, 79 which are associated with the jacks by virtue of shafts 81 and 82.
  • FIG. 5 also illustrates a selsyn receiver 83 and the customary limit switches 84, both of which are employed to assist in positioning of the load cells 70 and, hence, the positioning of the spring bars 1.
  • This particular arrangement is designed to allow a change in the modulus from 0.050 to 0.2 which represents a 4:1 spring control range.
  • the 0.2 modulus condition may be employed when rolling strip of the order of 0.2 where the mill spring itself comes to 0.1.
  • the 0.050 modulus condition may be employed when the strip being rolled is 0.050 inch where there is a 0.1 mill spring and a spring controlled range of 0.1. Accordingly, as the conditions of rolling change for a given mill, the operator will be able to adjust the modulus condition to suit the particular rolling mill condition he faces.
  • said force applying means being operable to place said one roll in a predetermined position with respect to a desired passline of said rolling mill during which positioning said mechanical means is moved out of said working position
  • said 5 movement sensitive means comprises a load sensitive gages said one roll assembly and effects movement thereof
  • said mechanical means comprises a bar spring having one end associated with the piston of said piston cylinder assembly and displaceable by said piston on movement thereof and the other end located remote from said piston and associated with said load sensitive means.
  • said means for moving said load sensitive means comprises:
  • a worm-wheel gear unit and power means for driving said gear unit.
  • said force applying means comprises:
  • said mechanical means comprises a pair of bar springs arranged on opposite sides of said piston cylinder assembly and so disposed that on displacement of the cylinder of said piston cylinder assembly said spring bars are deflected.
  • each bar spring includes a threaded shaft
  • a movable fulcrum member arranged midway between the ends of each bar spring on the side opposite the side on which said movable blocks are arranged
  • each fulcrum member is adapted to receive a load sensitive means.
  • each cylinder assembly is provided with a pair of said bar springs
  • said means for adjusting vertically said bar springs comprising screw jack means for each bar spring
  • each screw jack means for connecting each screw jack means to a common electrical motor.
  • said force applying means engaging said bearing chock assemblies for sitioning said one roll
  • said force app ying means having a stationary member and a movable member and wherein said movable member is arranged to cause movement of said roll and is movable by said one roll on displacement of said roll
  • a position indicating means having a first portion arranged to detect relative movement between said stationary and movable members of said force applying means
  • control means associated with said movement sensitive means and said force applying means for changing the position of the movable member of said force applying means on a detected movement of said one roll.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
US171653A 1970-09-18 1971-08-13 Roll positioning means for a rolling mill Expired - Lifetime US3702554A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4457670 1970-09-18

Publications (1)

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US3702554A true US3702554A (en) 1972-11-14

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US171653A Expired - Lifetime US3702554A (en) 1970-09-18 1971-08-13 Roll positioning means for a rolling mill

Country Status (7)

Country Link
US (1) US3702554A (de)
BE (1) BE772719A (de)
CA (1) CA957533A (de)
DE (1) DE2143867A1 (de)
ES (1) ES395187A1 (de)
FR (1) FR2106601B1 (de)
GB (1) GB1350206A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100288862A1 (en) * 2009-05-14 2010-11-18 Wark Rickey E Pressure monitor for pulverizer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3496743A (en) * 1966-09-09 1970-02-24 United Eng Foundry Co Rolling mill for producing constant gauge

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1216353A (fr) * 1958-10-31 1960-04-25 Siderurgie Fse Inst Rech Dispositif de serrage hydraulique pour laminoirs avec compensation du cédage

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3496743A (en) * 1966-09-09 1970-02-24 United Eng Foundry Co Rolling mill for producing constant gauge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100288862A1 (en) * 2009-05-14 2010-11-18 Wark Rickey E Pressure monitor for pulverizer
US8070081B2 (en) * 2009-05-14 2011-12-06 Wark Rickey E Pressure monitor for pulverizer
US8511594B2 (en) 2009-05-14 2013-08-20 Rickey E. Wark Pressure monitor for pulverizer

Also Published As

Publication number Publication date
BE772719A (fr) 1972-03-17
FR2106601B1 (de) 1974-03-29
FR2106601A1 (de) 1972-05-05
ES395187A1 (es) 1974-11-16
CA957533A (en) 1974-11-12
GB1350206A (en) 1974-04-18
DE2143867A1 (de) 1972-03-23

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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: WEAN UNITED, INC.

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:PITTSBURGH NATIONAL BANK;REEL/FRAME:004925/0218

Effective date: 19880509

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