US3899910A - Prestress type rolling mill - Google Patents

Prestress type rolling mill Download PDF

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Publication number
US3899910A
US3899910A US474403A US47440374A US3899910A US 3899910 A US3899910 A US 3899910A US 474403 A US474403 A US 474403A US 47440374 A US47440374 A US 47440374A US 3899910 A US3899910 A US 3899910A
Authority
US
United States
Prior art keywords
housing
rolling mill
lower housing
rolls
roll
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 - Lifetime
Application number
US474403A
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English (en)
Inventor
Keiichi Aramaki
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.)
JFE Engineering Corp
Original Assignee
Nippon Kokan 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
Application filed by Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Application granted granted Critical
Publication of US3899910A publication Critical patent/US3899910A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
    • 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
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B31/04—Rolling stand frames or housings; Roll mountings ; Roll chocks with tie rods in frameless stands, e.g. prestressed tie rods
    • 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
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
    • B21B2013/106—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane for sections, e.g. beams, rails

Definitions

  • a novel structure of a prestress type universal rolling mill suitable for rolling H-sections and others of various gages in which a roll stand housing is divided into upper and lower housings so that a bottom horizontal roll and a pair of vertical rolls may be readily mounted into the lower housing from above, the upper housing with a top horizontal roller mounted therein may be joined with the lower housing as such, and the upper and lower housings may be readily joined with a plurality of tension bars which utilize hydraulic pressure.
  • the prestress type universal rolling mill structure of this invention is thus compact, rigid and light in weight and permits changing of the rolls in a short period of time with ease.
  • the present invention relates to rolling mills for rolling I-I-section steels, etc. of different gages, and more particularly it relates to a novel prestress type universal rolling mill structure which is compact and rigid and in which the rolls can be readily changed.
  • the roll-changing time is increased by the use of the crane and it is impossible to improve the rate of operation since no rolling operation takes place during the roll changing.
  • the latter is a method employing cross beams connecting right and left housings so that the roll bearing chocks may be mounted at any given positions on the cross beams.
  • the cross beams are moved upward and/or downward so that the rolls are withdrawn transversely through the window of the housing utilizing the cross beams as guides.
  • the stand changing methods where the stand with rolls to be changed is removed from the rolling line and is replaced with a new stand preliminarily equipped with the necessary mill accessories including the new rolls. are divided into two classes, i.e., one in which the stand is removed by means of a crane and the other in which the stand is removed by means of an extracting device.
  • an overhead crane or a specially designed gantry crane is employed whereby the stand with the rolls to be changed is lifted and removed from the line and a stand equipped with the new rolls is installed on the line.
  • this method requires the use of a large capacity crane and it is not preferred for that reason.
  • the latter method which employs an extracting device is designed so that the strand to be changed is withdrawn over the track crossing the rolling line at right angles and the new stand on the transverse track is inserted into the line by means of the extracting device.
  • the roll changing time of this latter method isthe shortest among the previously described conventional roll changing methods.
  • each individual stand has a housing divided into an outer housing and an inner cartridge so that the reaction force of the vertical rolls is borne by the inner housing and the vertical rolling reaction of the horizontal rolls is born by the outer housing, and the stand is fixedly held on the rolling line and only the inner housing with the rolls to be changed is removed.
  • a disadvantage of this method is that due to the housing consisting of the outer housing and the inner cartridge, more clearance is produced as compared with the stand changing-type one piece rolling mills and the roll changing time is the same with that of the previously described roll changing methods.
  • the apparatus according to the present invention has among its advantages the fact that due to the roll stand housing divided into two parts, a bottom horizontal roll with its bearing chocks and a pair of vertical rolls with its chocks can be inserted into the lower housing from above, and the upper housing equipped with a top horizontal roll and its bearing chocks can be mounted in the lower housing, whereby both the horizontal rolls and the vertical rolls can be readily changed.
  • the roll stand housing is divided only into two parts, and moreover the lower housing serves as the housing for the pair of vertical rolls as well as the bottom horizontal roll, whereby a rolling mill structure which is provided is compact and rigid and the weight of the stand is reduced to facilitate stand changing.
  • FIG. 1 is a front view showing an embodiment of a prestress type universal rolling mill according to the present invention.
  • I i FIG. 2 is a side view of FIG. 1.
  • FIGS. 1 and 2 the housing of a prestress type universal rolling mill is divided into two parts, i.e.. an
  • wedge ,liner is mounted on the bearing chock 4 sothat the thickness of the wedge liners 5 is suitably selected to be fit for rolls of different diameters.
  • a sliding I ,wedge 6 of the same taper as the wedge liner 5 is placed ,on the wedge liner 5 so that the sliding wedges 6 are horizontally slidable by means of worm gears 8 and a screw down motor 9 through bars 7.
  • each of the bearing chocks 4 for the roll 3 is suspended by a roll balancing cylinder l1, and a roll horizontal position adjusting equipment isarranged on the' side opposite to the driving side.
  • the bilateral positions of the upper and lower housings 1 and 2 are determined by a side tapered guide surface 12, and the upper and lower housings l and 2 forming a contact surface 14 are joined together by four tension'bars l3.'
  • Each of the tension bars 13 joining the upper and lower housings 1 and 2 together, is secured at its lower end by a cotter 34 attached to the lower housing 2 and is provided with a hydraulic pressure nut 35 at its the rolling torque of the top horizontal roll 3 is transmitted to the upper housing 1 from the side faces of the bearing chocks 4 through an upper housing window surface 15 and it is also transmitted to the lower housing 2 through the guide surface 12 and to the founda- 7 tion through a sole plate 16.
  • the lowermost end face 17 of the upper housing 1 serves as an upper guide face for the respective chocks 20 of vertical rolls l8 and 19 so that the upward movement of the chocks 20 is regulated by joining the upper housing 1 with the lower housing 2, whereas the chocks 20 can be picked out upwardlyas desired by removing the upper housing 1 first. ,7
  • the vertical rolls l8 and 19 are provided with bearings on the inside thereof and they are respectively mounted on a stationary shaft installed in the chock 20. Consequently, the rolling reaction of the vertical rolls l8 and 19 is borne by the vertical rolls 18 and 19, the bearings, the stationary shafts, the chocks 20, wedge liners 22, sliding wedges 21 and a yoke constituting part of the lower housing 2.
  • the thickness of the wedge liners 22 is suitably selected in accordance with the gage of a section to be rolled, the roll diameter, etc. and they are provided at the rear of the respective chocks 20.
  • the screwdown or adjustment of the vertical rolls l8 and 1 9 is effected by vertically moving the sliding wedges 21 by means of worm gears 24, a chain 25 and a motor 26 through rods 23.
  • the chock 20 is pulled outward by a roll balancing cylinder 27 so that no space is produced between the sliding wedge 21 and the wedge liner 22. 7 1 7
  • the bottomhorizontal roll 28 in the lower housing 2. is provided, similarly with the top horizontal roll 3, with bearing chocks 29, wedge liners 30, sliding wedges 31, bars 32, worm gears 33, etc., and by lifting and picking out the upper housing 1 with the upper end.
  • wheels 38 are provided at the lower part of the roll stand to support the entire weight of the mill, and a pair of liftingrails 39 are arranged below the wheels 38 so that the stand can be moved freely by an extracting device.
  • a stand clamp 41 mounted on a hydraulic cylinder unit is retracted and then the rails 39 are raised to separate the stand from the sole plate 16, whereby the stand is withdrawn by the extracting device and replaced with a stand equipped with the new rolls.
  • the stand with the new rolls is transferred onto the rails 39 so that when the new stand is positioned in place, the rails 39 are lowered and the stand thus engaged with the sole plate 16 is secured in position by the stand clamp 41.
  • the roll'stand housing is divided into upper and lower housings which are in turn joined together with four tension bars each provided with a hydraulic pressure unit at the upper end thereof and therefore the upper and lower housings can be separated from each other with extreme case.
  • the upper housing with the top horizontal roll can be lifted upward along the tension bars by utilizing hangers 10, and
  • the screw down device is of the wedge type, the rolling mill is made rigid andcon'sequently the length of the yoke stretch is reduced, makin'gthe rolling mill small and compact.
  • the use of a screw down device of any known typed oes not have any detrimental effect on the essential qualities of the present invention.
  • the present invention is extremely useful industrially, since it provides a prestress type universal rolling mill which is extremely compact and light in construction as a whole and in which all the accessory equipment including the sole plate, rail lifting equipment, stand extracting equipment and transverse extracting equipment are all made small and light in weight.
  • a prestress type universal rolling mill comprising:
  • a top horizontal roll mounted to said upper housing
  • mounting and joining means including generally vertically oriented side tapered guide surface means on said upper and lower housing for removably mounting and joining said upper housing to said lower housing, whereby a horizontal force exerted on said top horizontal roll is transmitted from said upper housing through said side tapered guide surface means and is borne by said lower housing.
  • side tapered guide surface means includes mating side tapered guide surfaces on said upper and lower housings; said mounting and joining means further including substantially horizontally oriented mating contact surfaces on said upper and lower housings.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US474403A 1973-06-19 1974-05-30 Prestress type rolling mill Expired - Lifetime US3899910A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6827773A JPS5310947B2 (enrdf_load_stackoverflow) 1973-06-19 1973-06-19

Publications (1)

Publication Number Publication Date
US3899910A true US3899910A (en) 1975-08-19

Family

ID=13369089

Family Applications (1)

Application Number Title Priority Date Filing Date
US474403A Expired - Lifetime US3899910A (en) 1973-06-19 1974-05-30 Prestress type rolling mill

Country Status (4)

Country Link
US (1) US3899910A (enrdf_load_stackoverflow)
JP (1) JPS5310947B2 (enrdf_load_stackoverflow)
DE (1) DE2429375A1 (enrdf_load_stackoverflow)
GB (1) GB1434504A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557130A (en) * 1982-08-25 1985-12-10 Davy Mckee (Sheffield) Limited Housingless beam mill stand
US4615201A (en) * 1983-06-17 1986-10-07 Sacilor System for replacing section rolling mill stands, multi-function stand-bearing trolley for positioning on the rolling sites and transport towards the pre-assembly sites
US4706484A (en) * 1986-07-28 1987-11-17 United Engineering Rolling Mills, Inc. Universal rolling mill
US4715206A (en) * 1984-05-28 1987-12-29 Pomini Farrel S.P.A. Rolling stand of the type with tie-rods with oscillating supports with interchangeable intermediate holder bases
US4753097A (en) * 1985-11-02 1988-06-28 Mannesmann Ag Universal roll stand
US5551273A (en) * 1994-09-30 1996-09-03 Pomini S.P.A. Rolling stand with tie-rods with extremely high strength to axial stresses
CN102179408A (zh) * 2011-01-24 2011-09-14 中冶赛迪工程技术股份有限公司 用于万能轧机的轧辊组
CN112974540A (zh) * 2021-02-08 2021-06-18 太原科技大学 一种大型车轴快速更换轧辊模具楔横轧机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4911794A (enrdf_load_stackoverflow) * 1972-04-28 1974-02-01
IT1146787B (it) * 1981-05-20 1986-11-19 Danieli Off Mecc Perfezionamenti alle gabbie di liminazione del tipo a cartuccia e gabbie di laminazione del tipo a cartuccia cosi' perfezionate
CN119368619B (zh) * 2024-12-26 2025-03-18 江苏鑫思路铝业有限公司 一种铝单板冲压成型加工设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171304A (en) * 1961-07-10 1965-03-02 Davy & United Eng Co Ltd Rolling mills
US3699794A (en) * 1969-09-13 1972-10-24 Moeller & Neumann Gmbh Universal rolling mill stand having more than one caliber for rolling profiles beams such as i-beams
US3802242A (en) * 1971-09-06 1974-04-09 Schloemann Ag Universal roll stand

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171304A (en) * 1961-07-10 1965-03-02 Davy & United Eng Co Ltd Rolling mills
US3699794A (en) * 1969-09-13 1972-10-24 Moeller & Neumann Gmbh Universal rolling mill stand having more than one caliber for rolling profiles beams such as i-beams
US3802242A (en) * 1971-09-06 1974-04-09 Schloemann Ag Universal roll stand

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557130A (en) * 1982-08-25 1985-12-10 Davy Mckee (Sheffield) Limited Housingless beam mill stand
US4615201A (en) * 1983-06-17 1986-10-07 Sacilor System for replacing section rolling mill stands, multi-function stand-bearing trolley for positioning on the rolling sites and transport towards the pre-assembly sites
US4715206A (en) * 1984-05-28 1987-12-29 Pomini Farrel S.P.A. Rolling stand of the type with tie-rods with oscillating supports with interchangeable intermediate holder bases
US4753097A (en) * 1985-11-02 1988-06-28 Mannesmann Ag Universal roll stand
US4706484A (en) * 1986-07-28 1987-11-17 United Engineering Rolling Mills, Inc. Universal rolling mill
US5551273A (en) * 1994-09-30 1996-09-03 Pomini S.P.A. Rolling stand with tie-rods with extremely high strength to axial stresses
CN102179408A (zh) * 2011-01-24 2011-09-14 中冶赛迪工程技术股份有限公司 用于万能轧机的轧辊组
CN102179408B (zh) * 2011-01-24 2012-12-26 中冶赛迪工程技术股份有限公司 用于万能轧机的轧辊组
CN112974540A (zh) * 2021-02-08 2021-06-18 太原科技大学 一种大型车轴快速更换轧辊模具楔横轧机
CN112974540B (zh) * 2021-02-08 2022-07-12 太原科技大学 一种大型车轴快速更换轧辊模具楔横轧机

Also Published As

Publication number Publication date
GB1434504A (en) 1976-05-05
JPS5017357A (enrdf_load_stackoverflow) 1975-02-24
DE2429375A1 (de) 1975-01-09
JPS5310947B2 (enrdf_load_stackoverflow) 1978-04-18

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