US2676502A - Universal rolling mill - Google Patents

Universal rolling mill Download PDF

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Publication number
US2676502A
US2676502A US126079A US12607949A US2676502A US 2676502 A US2676502 A US 2676502A US 126079 A US126079 A US 126079A US 12607949 A US12607949 A US 12607949A US 2676502 A US2676502 A US 2676502A
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United States
Prior art keywords
rolls
vertical
roll
rolling mill
bearing
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Expired - Lifetime
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US126079A
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English (en)
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Norlindh Sven Erik Malte
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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
    • B21B31/02—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
    • B21B13/001—Convertible or tiltable stands, e.g. from duo to universal stands, from horizontal to vertical stands
    • 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
    • B21B13/04—Three-high arrangement
    • 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
    • B21B13/12—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 axes being arranged in different planes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
    • 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

Definitions

  • the present invention has for its object to provide a universal rolling mill which is more useful in several respects than those heretofore used.
  • the vertical rolls of the universal rolling mills generally are positively driven with a shaft which is parallel with the rolls and mounted topmost in the rolling stand, it meets with extremely great difiiculties to equip these stands with a detachable top.
  • the roller bearing means heretofore used it is necessary to use a detachable top because there is very seldom sufficient space in the axial direction for drawing out the rolls.
  • constructions disclosed lately in my United States Patents Nos.
  • the invention is exemplified in the annexed drawings as applied to a three-high rolling mill.
  • Fig. 1 is a front view
  • Fig. 1A is a top view
  • Fig. 2 is an end view of a three-high rolling mill.
  • coupling elements connecting two stands are cut on the line II--II of Fig. 1.
  • Vertical rolls can be'built into such a rolling'mill. Such a vertical roll'mounting is shown inFigs. 3 tolO.
  • Fig. 3 is a front view, partly in section, on the line III--IIIIinfFig. 4
  • Fig. 4 is a section on the line IV-IV in Fig. 3
  • Fig. 5 is a top view, partly in section on the lines VwVa and Vb'-Vb in Fig. 4.
  • FIG. 6 is a section on the line VI-"-VI in Fig. '7, and the last-mentioned figure a view of the rolling mill from the exit side.
  • Fig. 8 is a plan view of the rolling mill
  • Fig. 9 is a section on line IXIX in Fig
  • '7 and
  • Fig. 10 is a view of the rolling mill taken at aright angleto the view in Fig.7, the views in Figs. 6-"10be'ing on a scale smaller than that usedfor Figs. '3-5.
  • v is a section on the line VI-"-VI in Fig. '7, and the last-mentioned figure a view of the rolling mill from the exit side.
  • Fig. 8 is a plan view of the rolling mill
  • Fig. 9 is a section on line IXIX in Fig
  • '7 and
  • Fig. 10 is a view of the rolling mill taken at aright angleto the view in Fig
  • Fig. 1 shows diagrammatically two pairs of housings placed side by side in a train.
  • the left pair of housings is shown only in profile since this. pair is similar to the right pair.
  • the horizontal rolls l, 2, 3 are mounted in bearing boxes la, 2a, 311 respectively, as seen in Fig. 2, by means of roller bearings one of which is shown at 28 in Fig. 5, and these bearing boxes are supported and guided by posts in accordance with my U. S. Patent No. 2,506,681.
  • One such post numbered I1 is shown in Figs. 1, 1A, 2, 4 and partly in Fig. 5.
  • Each post Ir with its base plate is used instead of a bearing casing or a usual frame, and is provided with a vertical guide, in the first place for the bearing boxes which are situated at the same side of the pair of rolls and of the post.
  • the post can at the same time form a similar guide at its other side for the bearing boxes of another pair of rolls for instance in three-high mills according to the Figures 1, 1A, 2, 4 and 5.
  • the profile of the post Ir is best shown in Fig. 1A, which is a top view of the same together with a bearing box la at each side.
  • a vertical flange constituting each guide engages a recess or a groove 26b in the bearing box.
  • Fig. 1A is intended just to show principally how the post and bearing boxes may be provided to engage each other. Due to said flanges and grooves, the bearing boxes and rolls will obtain a good guidance, and will be movable up and down between the posts when the rolling mill is dismounted or mounted. This arrangement will be of great importance for universal rolling mills as will be obvious from the following specification. As most practical the middle roll is stationary during adjustment operations and the other two rolls adjustable in relation to it.
  • the bearing 2a for the middle roll 2 is fixed in the post and connected with the bearing la by means of stay screws l5, l6 (Figs.
  • the driving power from the horizontal rolls of the one pair of housings is transmitted to the one input guide away from the other.
  • the lever arms actuate the input guides by means of set screws 4k, 5k.
  • An upper and a lower guide device, a so-called scraper device lg, 29 are provided other pair of housings by means of coupling elements 25 (Fig. l) and coupling he'ads lb, 2b, 3b as usual.
  • Two vertical rolls 4 and 5 together with their drive devices are supported from the bearing boxes or housings 2a of the one horizontal roll, for instance the roll 2, at the output side of the horizontal rolls and input guides 4e, 5e as viewed in the direction of feed of the stock (Figs. 4 "and 8).
  • the bearing boxes M, 5a of the vertical rolls 4, 5 are slidably mounted on guides 2e, U, which are vertically adjustable and being fixed with screw bolts 26 each in a groove 25a in the roll bearing 2a. Such grooves are out also in bearings la and 3a.
  • a longitudinal shaft I mounted in one of the bearing boxes 2a and passing through bearing boxes 4a, 5a of the two vertical rolls,-see Fig.
  • the spacing between the vertical rolls 4, 5 is adjusted by means of three screws -9 having right and left hand threads (Figs. 3, 4) which are passed through nuts secured to the bearing boxes 4a, 5a. and are journalled in the bearing boxes 2a (e. g. to the left of Figs. 3 and 5).
  • The-screws 9 are connected to gear wheels at IU close to the end wall of the bearing box.
  • the gear wheels are driven through a chain transmission lfla by a motor with gearing not shown.
  • the input guides '46, 5e also participate in the movement which takes place. This is done through a system of pull rods 4], 5h and 5f, 47:. (see Fig. 8) and a lever device 49 and 5grespectively at each end wall where each lever device is mounted at its centre-on its respective bearing box 2a.
  • the pull rod 4] is connected with the bearing box 421. and the pull rod "57 with the bearing box 5a.
  • the position of the input guide 4e is controlled by movement of 'the'bearing box 5a of the vertical roll 5 and the position of input guide 5e is controlled by movement of the bearing box 4a of the vertical r0114, :as will be seen from Fig. 8.
  • the scraperlg rests on the bearing boxes la, 5a of the vertical rolls.
  • the scraper lg associated with the roll I is mounted on a member 'le by means of a rod If provided with spring loading.
  • the member le is fixed to a guide rest bar Id attached on the bearing boxes la of the top horizontal roll. Consequently, the upper-scraper lg is adjusted in height with the top roll I.
  • the details are best shown in Fig. 6.
  • lateral guides 4n, 5m, 4m, 5n (Figs. 7, 9) being required below the vertical rolls when rolling between the bottom roll 3- and the middle roll 2.
  • the lateral guides 411., Am are connected to the bearing box 4a and the lateral guides 5n, 5m to the bearing box 5a of the vertical rolls and follow the same when the vertical rolls 4, 5 are adjusted.
  • the usual known construction comprises ordinary lateral guides which are fixed on a guide rest bar and which must be displaced manually each time the width dimension is to be changed.
  • the sup ports and the lateral guides have been designed in :such a manner that rolling beds l2 and I3 respectively are obtained in the lower position oneach side of the middle rolling bed l'l situated between the vertical rolls 4 and 5 (Fig. 7).
  • the lateral guides are shown .in Fig. 9, and the supports .in .the left bearing box 4a have been sectioned 'in the one direction and the supports in the other box 5a have been sectioned in the other direction. From Fig. 7 it will also be seen that the output guides Em and 4n and 5m and 511 in the lower position follow the respective middle roll 2 and 'bottom'roll 3 at the adjustment.
  • the vertical rolls 4, 5 slant with their axes outwards at an angle of 2 to the ver-v tical, which causes the strip automatically to be forced downwards.
  • the bearing boxes of the verticalrolls carry rollers 41,51, Figs. '3, 7,, which support the strip and absorb the downwardly directed forces on the edges of "the hot stock, and the upward reaction pressure against the rolls '41" and Sr, hold the hot stock exactly 'at right-angles to "the plane containing the axes of the vertical rolls 4, 5.
  • Th'e'upper scraper lgtand lower scraper 2g serve substantially to guide the leading end of the hot stock to the correct'posi tion between the vertical rolls 4, 5.
  • Bars 39, SI and 32 connect the bearing boxes is and 3a, respectively.
  • the whole unit may be handled by a crane like the unit shown in my U. S. Patent No. 2,506,681 for which purpose it may be provided with a yoke like the unit shown in that patent.
  • the invention is not limited to the described and disclosed details but they may be altered in accordance with the local conditions and the requirements of the work, using diiferent constructional elements.
  • the above described devices may be used c. g. in two-high mills in as far as they are not dependent upon more than two horizontal rolls.
  • posts carrying the horizontal rolls through which posts the bearing boxes become freely accessible on the entry side or the exit side (compare my United States Patent No. 2,506,681)
  • the further simplification may be made that the bearing boxes of the horizontal rolls are arranged to engage one another, as shown in Fig. 2.
  • their stay screws are utilized for the stabilizing of the bearings.
  • the vertical rolls may be arranged to be dismounted and mounted in such a manner that the horizontal rolls can be used as an ordinary roll pair in two-high, three-high and similar rolling mills, see Fig. 2.
  • a universal rolling mill Comprising superposed horizontal rolls having end journals, 2. pair of horizontally aligned bearing blocks for each of said rolls having journal bearings receiving the end journals of the rolls therein, vertically extending stay screws mounted on the bearing blocks of one of said rolls, the bearing blocks of the other of said rolls being mounted on said stay screws, adjusting means including said stay screws for adjusting the roll pressure and retaining the bearing blocks in position with respect to each other, said bearing blocks having vertically aligned guides on the outer end faces thereof offset from the axis of the journal bearings therein for engagement with complementary vertical guides on supporting standards to removably support the roll assembly on such standards, rigid horizontal guide rail members mounted directly on and between one of said pairs of bearing blocks, a pair of vertical roll journal housings slidably mounted on said horizontal guide rails, a vertical roll journalled in each of said vertical roll journal housings in opposed relation to each other, horizontal right and left hand threaded adjusting screw rods journalled in said last mentioned pair of bearing blocks and in threaded engagement with said vertical roll journal housings for
  • a universal rolling mill as claimed in claim 1 and a driving connection between the horizontal roll journalled in the last mentioned pair of bearing blocks and the vertical roll drive shaft journalled therein.
  • a universal rolling mill as claimed in claim 2, in which the means for driving the vertical rolls from the vertical roll drive shaft includes a mitre gear on each of said vertical rolls and a meshing-mitre gear mounted with each of said vertical roll journal housings and slidable on said vertical roll drive shaft with a splined connection for transmitting the drive thereto.
  • a universal rolling mill as claimed in claim 4 in which the adjusting connections between said vertical roll journal housings and said input guides includes set screw connections between the rod .and lever connections and said input guides for individual adjustment of each of said input guides with respect to the rod and lever connections.
  • a universal rolling mill as claimed in claim 1 in which the mill is a three high mill having two lower roll beds and one upper roll bed and in which input guides are provided for the lower roll beds and mounted in dependent relation directly on the vertical roll journal housings whereby to be automatically adjusted upon adjustment of the vertical roll journal housings, and in which the upper roll bed is centered between the vertical roll journal housings and immediately above the space between the lower roll beds.
  • a universal rolling mill as claimed in claim 1 in which the vertical rolls are journalled in said vertical roll journal housings at an angle to the vertical to exert a downward force on the work and stock supporting rollers journalled on said vertical roll journal housings in position to support the work passing between said vertical rollers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US126079A 1949-09-28 1949-11-08 Universal rolling mill Expired - Lifetime US2676502A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US126079A US2676502A (en) 1949-09-28 1949-11-08 Universal rolling mill

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB24865/49A GB674992A (en) 1949-09-28 1949-09-28 Improvements in universal rolling mills
US126079A US2676502A (en) 1949-09-28 1949-11-08 Universal rolling mill

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US2676502A true US2676502A (en) 1954-04-27

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US (1) US2676502A (en(2012))
BE (1) BE491544A (en(2012))
FR (1) FR996433A (en(2012))
GB (1) GB674992A (en(2012))

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3332269A (en) * 1962-03-22 1967-07-25 Morgardshammars Mek Verkst Sa Rolling method and a rolling mill for carrying out the method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113680826B (zh) * 2021-07-20 2023-07-25 宣化钢铁集团有限责任公司 一种立辊轧机的立辊箱检修方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US353450A (en) * 1886-11-30 Three-high rolling-mill
US481058A (en) * 1892-08-16 Universal rolling-mill
US819538A (en) * 1905-02-28 1906-05-01 United Eng Foundry Co Universal mill.
US1133551A (en) * 1914-03-14 1915-03-30 William W Frazier Rolling-mill.
US1796447A (en) * 1928-05-21 1931-03-17 Pehr A Foren Rolling mill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US353450A (en) * 1886-11-30 Three-high rolling-mill
US481058A (en) * 1892-08-16 Universal rolling-mill
US819538A (en) * 1905-02-28 1906-05-01 United Eng Foundry Co Universal mill.
US1133551A (en) * 1914-03-14 1915-03-30 William W Frazier Rolling-mill.
US1796447A (en) * 1928-05-21 1931-03-17 Pehr A Foren Rolling mill

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3332269A (en) * 1962-03-22 1967-07-25 Morgardshammars Mek Verkst Sa Rolling method and a rolling mill for carrying out the method

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FR996433A (fr) 1951-12-19
GB674992A (en) 1952-07-02
BE491544A (en(2012)) 1949-10-31

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