US3702557A - Apparatus for supporting yokes for a rolling mill having roll contour control - Google Patents

Apparatus for supporting yokes for a rolling mill having roll contour control Download PDF

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Publication number
US3702557A
US3702557A US120034A US3702557DA US3702557A US 3702557 A US3702557 A US 3702557A US 120034 A US120034 A US 120034A US 3702557D A US3702557D A US 3702557DA US 3702557 A US3702557 A US 3702557A
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United States
Prior art keywords
housing
rolls
roll
guide surfaces
projecting
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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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US120034A
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English (en)
Inventor
William P Amend
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Wean United Inc
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Wean United Inc
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Publication date
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    • 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
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends

Definitions

  • ABSTRACT This disclosure relates to an improved 4-high rolling mill construction which is particularly useful to facilitate backup roll changing.
  • the rolling mill includes piston and cylinder assemblies employed to develop a roll bending force which is transmitted by yokes to outboard bearing chocks mounted on the backup rolls.
  • a beam is provided between each backup roll and the top and bottom of the housings for absorbing the reaction force to the roll bending force.
  • the yokes for the upper backup roll are guided and horizontally supported by the beam.
  • the yokes for the bottom backup roll are guided and horizontally supported by the housing bed plates which further include piston and cylinder assemblies for vertically supporting these yokes during replacement of the bottom backup roll.
  • apparatus forming part of the roll contour control means and directly associated with eachsuch roll must be handled in some manner since, when in its operative location, such apparatus obstructs necessary access to the housing window for the replacement of the rolls.
  • FIG. 1 is a partial elevational view of the operating side of a 4-high rolling mill incorporating the features of the present invention, the work roll assemblies being removed for clarity,
  • FIG. 2 is a partial front elevational view of the upper portion of the rolling mill shown in FIG. 1,
  • FIG. 3 is a partial front elevational view of the lower portion of the rolling mill shown in FIG. 1,
  • FIG. 4 is a sectional view taken along line IV-IV 0 FIG. 1,
  • FIG. 5 is an enlarged sectional view taken along line V-V of FIG. 1, and
  • FIG. 6 is an enlarged sectional view taken along line VI-VI of FIG. 1.
  • FIGS. 1, 2 and 3 there is illustrated a 4-high rolling mill which includes a pair of housings 11, only the housing at the operators side being shown in the drawings. It is to be understood that the housing and its component parts at the drive side are the same as hereinafter described with respect to the operators side of the mill, unless otherwise noted.
  • Each housing has as an integral part thereof horizontally projecting feet 12 by which the housings are secured in a spaced-apart relation on bed plates 13 that I are supported on a foundation and have extensions 14 projecting beyond each of the millhousings, the purpose of which will be explained in detail hereinafter.
  • the housing 11 is formed with a window 15 into which there is received an upper bearing chock 16 and a lower bearing chock 17 for rotatably mounting upper and lower backup rolls l8 and 19, respectively, that support in the usual manner a pair of work rolls, not shown. While not shown in the drawings, piston and cylinder assemblies are located in the bottom of the housings for adjusting the elevation of the lower backup roll and, thus, controlling the separation between the work rolls.
  • the top portion of the housing 1 includes a horizontally disposed beam 21 that is urged by a piston and cylinder assembly, not shown, against a force transferring surface located in the top of the housing.
  • the beam extends through the mill in a parallel relation with the upper backup roll 18 such that its chock l6contacts the lower surface of the beam in a-force transmitting relationship.
  • the beam 21 has a projecting end 22 extending beyond the housing and into which there is formed a circular recess 23 for carrying a cylinder 24 having a piston 25. As shown in FIGS.
  • a conduit line 27 receives liquid under a controlled pressure to urge the piston 25 upwardly and apply a roll contour-controlling bending force to a yoke 28 having two downwardly extending arms 29 which transmit this force to an outboard bearing chock 31 mounted on an extended journal 18a of the backup roll 18.
  • the projecting end 22 of the beam at each side thereof has U-shaped guide surfaces 32 for receiving in a guiding relationship complementary guide surfaces 33 formed on the arms 29 of the yoke 28.
  • this guiding relationship between the yoke and beam not only stabilizes the yokes movement during operation of the mill, but also supports it in the horizontal plane of the beam to facilitate roll replacement or other servicing operations without necessitating the disassembling of the yokes from the beam.
  • the fluid pressure in conduit line 27 is reduced, thereby allowing the piston 25 to come to rest on the bottom of the cylinder 24 under the weight of the yoke 28 which is guided in the vertical direction by the mating guide surfaces 32 and 33.
  • the piston in this position will establish an air gap between rocker plates 35 secured on the arms 29 and rocker plates 36 secured on the outboard chock 31.
  • the establishment of this air gap is also made possible by the upper backup roll 18 being held in position by hooks 37 projecting from the beam and engaging hooks 38 formed on the backup chock 16.
  • the lower backup roll chock 17 is supported on a horizontally disposed beam 41 which is arranged parallel to the backup roll 19. Between the beam 41 and the bottom of the window there is located the previously mentioned piston and cylinder assembly for adjusting the elevation of the lower backup roll to control the gap between the work rolls.
  • the beam 41 has a projecting end 42 extending beyond the housing. In contact with the bottom surface of the beams extended end is a piston 43 which is received in a cylinder 44 carried by a yoke 45.
  • This yoke has two upwardly extending arms 46 which transmit the roll contour-controlling bending force generated by the piston 43 and cylinder 44 to an outboard bearing chock 47 mounted on an extended journal 19a of the backup roll 19.
  • FIGS. 1, 3 and 6 there is constructed in the bed plate extensions 14 cylinders 48 for receiving pistons 49 employed to position and support the yoke 45 during roll replacement or other servicing operations.
  • a conduit port 51 transmits fluid under pressure to the cylinder for displacing the piston 48 into supporting engagement with wings 52 that project from each arm 46 of the yoke 45 causing the latter to be displaced upwardly to a predetermined position where an air gap is established between rocker plates 53 secured on the arms 46 and rocker plates 54 secured on the outboard chock 47,
  • each bed plate extension 14 has spaced parallel gibs 55 defining U-shaped guide surfaces 56.
  • Complementary shaped guide surfaces 57 are machined on the arms 46 of the yokes.
  • spaced parallel rails 58 located in the bottom of the housing window.
  • other similarly spaced parallel rails 59 located at the operators side of the mill.
  • a roll changing sled 61 which is constructed and arranged for displacement along the rails 58 and 59 while it supports the beam 41 and backup roll 19, including the bearing chocks l7 and 47, incident to replacing the backup roll and servicing of the mill parts, such as load cells and piston and cylinder assemblies, in the lower portion of the mill housing.
  • rolling apparatus including a pair of housings for supporting a pair of rolls subject to deflection under the rolling load developed incident to reducing the thickness of the material being rolled,
  • each housing having a window for receiving said rolls
  • bearing chock assemblies mounted on the ends of the rolls for rotatably supporting the rolls in said housmg
  • a beam member including a projecting portion extending outwardly of said housing
  • said beam member arranged parallel to said roll and disposed between the housing and the bearing chock assembly of said roll,
  • displaceable yoke means arranged in a force-transmitting relationship between said force-exerting means and said journals for imposing roll contourcontrol bending forces to said journals to control the deflection of said one roll, and
  • a rolling apparatus according to claim 1 further comprising:
  • said support means including guide surfaces constructed and arranged to mate in a guiding relationship with the first-mentioned guide surfaces.
  • a rolling apparatus according to claim 2 wherein at least one of said guide surfaces is constructed and arranged to define a U-shaped configuration.
  • a rolling apparatus according to claim 1 further comprising:
  • said support means including guide surfaces constructed and arranged to mate in a guiding relationship with the first-mentioned guide surfaces.
  • a rolling apparatus further comprising:
  • said bed plates having extended portions projecting from said housing and having surfaces defining said guide surfaces projecting from said housing and fixed in relation thereto.
  • a rolling apparatus according to claim 5 wherein at least one of said guide surfaces is constructed and arranged to define a U-shaped configuration.
  • a rolling apparatus according to claim 1 further comprising:
  • bed plates for supporting said housings in a spacedapart relationship
  • said bed plates having extensions projecting away from said housings
  • a rolling apparatus according to claim 7 wherein said support means includes wings projecting from said yokes for engagement with said power means.
  • a housing having windows for receiving the pair of work rolls
  • each one of said backup rolls supports one of the work rolls
  • bearing chock assemblies mounted on the ends of said backup rolls for rotatably supporting the backup rolls in the housing
  • said beam member having extensions projecting outward of said bearing chock assemblies
  • support means on said yoke means having at least two restraining surfaces for positioning said yoke means relative to said housing independent of said backu rolls.
  • said support means includes guide surfaces constructed and arranged to mate with other guide surfaces fixed in relation to said mill housing.
  • a rolling mill according to claim 9 further comprising:
  • bed plates for supporting said housings in a spacedapart relationship, said bed plates having extensions projecting from said housings, and displaceable power means supported in said extensions for engaging said support means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
US120034A 1971-03-01 1971-03-01 Apparatus for supporting yokes for a rolling mill having roll contour control Expired - Lifetime US3702557A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12003471A 1971-03-01 1971-03-01

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US3702557A true US3702557A (en) 1972-11-14

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US (1) US3702557A (enExample)
ES (1) ES400291A1 (enExample)
FR (1) FR2128403B1 (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020178936A1 (en) * 2001-05-30 2002-12-05 New Gencoat, Inc. Wringer roller system
US20090199611A1 (en) * 2006-07-14 2009-08-13 Michael Saupe Device for rotationally locking the supporting roll balanced architecture of roll stands

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3364715A (en) * 1964-07-08 1968-01-23 United Eng Foundry Co Crown control for rolling mill
US3373589A (en) * 1964-06-04 1968-03-19 United Eng Foundry Co Roll bending device for rolling mill
US3373588A (en) * 1965-08-17 1968-03-19 United Eng Foundry Co Crown control for rolling mill
US3526118A (en) * 1966-11-22 1970-09-01 United Eng Foundry Co Apparatus for bending the rolls of a rolling mill and like device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373589A (en) * 1964-06-04 1968-03-19 United Eng Foundry Co Roll bending device for rolling mill
US3364715A (en) * 1964-07-08 1968-01-23 United Eng Foundry Co Crown control for rolling mill
US3373588A (en) * 1965-08-17 1968-03-19 United Eng Foundry Co Crown control for rolling mill
US3526118A (en) * 1966-11-22 1970-09-01 United Eng Foundry Co Apparatus for bending the rolls of a rolling mill and like device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020178936A1 (en) * 2001-05-30 2002-12-05 New Gencoat, Inc. Wringer roller system
US6786144B2 (en) * 2001-05-30 2004-09-07 New Gencoat, Inc. Wringer roller system
US20090199611A1 (en) * 2006-07-14 2009-08-13 Michael Saupe Device for rotationally locking the supporting roll balanced architecture of roll stands
US8042371B2 (en) * 2006-07-14 2011-10-25 Sms Siemag Aktiengesellschaft Device for rotationally locking the supporting roll balanced architecture of roll stands

Also Published As

Publication number Publication date
ES400291A1 (es) 1975-07-16
FR2128403B1 (enExample) 1974-12-13
FR2128403A1 (enExample) 1972-10-20

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