US3718026A - Cluster mill with cantilevered rolls - Google Patents

Cluster mill with cantilevered rolls Download PDF

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Publication number
US3718026A
US3718026A US00042910A US3718026DA US3718026A US 3718026 A US3718026 A US 3718026A US 00042910 A US00042910 A US 00042910A US 3718026D A US3718026D A US 3718026DA US 3718026 A US3718026 A US 3718026A
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United States
Prior art keywords
rolls
plates
pair
supporting
working
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Expired - Lifetime
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US00042910A
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English (en)
Inventor
J Gawlikowicz
J Krywult
A Makomaski
L Sikora
R Wusatowski
J Garczynski
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INST MELATURGUE ZELAZA
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INST MELATURGUE ZELAZA
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Priority claimed from PL134056A external-priority patent/PL64032B1/pl
Priority claimed from PL14000370A external-priority patent/PL72788A6/xx
Application filed by INST MELATURGUE ZELAZA filed Critical INST MELATURGUE ZELAZA
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Publication of US3718026A publication Critical patent/US3718026A/en
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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
    • B21B13/005—Cantilevered roll 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
    • B21B13/14—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
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B2013/006—Multiple strand rolling mills; Mill stands with multiple caliber rolls
    • 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
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • B21B31/26—Adjusting eccentrically-mounted roll bearings

Definitions

  • ABSTRACT Cluster mill with cantilevered rolls designed mainly for rolling of workpieces comprises two cantilevered working rolls of small diameter and long body, and four cantilevered back-up rolls of relatively great diameter. Thanks to the small diameter of the working rolls a better elongation of the rolled metal is obtained, the whole rolling process being more economical.
  • a few passes, up to several dozens of passes may be cut on working surfaces of the working rolls, a great rigidity of said rolls being maintained, and thus metal workpieces may be precisely rolled.
  • the working rolls and back-up rolls are carried in a frame composed of plates and which are shiftable perpendicularly to the rolling line on columns.
  • the work ing rolls are adjusted symetrically to the rolling line.
  • a driving shaft sliding in a second driving shaft drives the working rolls through an assembly of gears, couplings being thereby eliminated.
  • the drive from a common driving shaft may be transferred to the second driving shaft through bevel gears or through a frontal gear coupling or from an individual driving motor.
  • PATENTEBFEBZTISB SHEET 13UF 13 Fig 13 CLUSTER MILL WITH CANTILEVERED ROLLS There are known roll supports or roll stands, particu larly for strip rolling mills, provided with two working rolls and four back-up rolls, but either the back-up rolls or both the working rolls and back-up rolls are journaled on side necks of these rolls, and so are cantilevered.
  • An object of this invention is to provide for the rolling of metals, mainly rods, on cantilevered working rolls of small diameter with practical elimination of bending of the working rolls even for a great length of working roll surface, on which a number of grooves, depending on need, are made, with the capability of moving the rolls in a direction transverse to the rolling line.
  • This object has been achieved by a construction of a cluster mill with cantilevered rolls, which have two working rolls and four back-up rolls with diameters greater than those of the working rolls.
  • the driven working rolls are mounted in hearings in two end plates, while the back-up rolls are journaled outside these plates.
  • two pinion gears are mounted at a fixed distance from one another, one being a driving pinion gear formed with a splined shaft, through which it is connected with the main driving shaft located in the rear plate.
  • the pinion gears of the working rolls connected rigidly with the working rolls are mounted in frames that permit their rotary movement to provide for adlower part of the stand at the side of the main drive, located in the rear plate or side plate of the frame, and is used for rough displacement.
  • the roll stand is provided with a mechanism consisting also of the driving cylinder and locks, used for precise displacement of the rolls in a direction transverse to the rolling line.
  • the movable frame together with the bearings of the working rolls and the back-up rolls, the aforementioned set of gears, screw mechanism for adjusting the gap between the rolls and the mechanism for displacement of the working rolls, for protection against harmful external conditions, are located inside the mill housmg.
  • the mill is provided with sealing plates and two sealing inserts.
  • the cluster mill with cantilevered rolls in one embodiment of the invention is provided with back-up rolls journaled on both sides in bearings carried in pivotal plates located outside the side plate of the frame, which is movable on columns.
  • the roll stand For adjustment of the pivotal plates the roll stand is provided with eccentric shafts mounted in end plates of the movable frame and, for driving the eccentric shafts a screw mechanism is provided.
  • the cluster mill in another embodiment of the invention, in order to further increase the rigidity of the cantilevered working rolls, is provided with pivotal plates mounted in rockers, which for moving to and from one another have: two screws with left-hand and right-hand threads, nuts, ties, bolts and bolts with sleeves; for a rapid replacement of back-up rolls it is provided with shafts protruding from pivotal plates with a mechanism for effecting their relative movement.
  • the second essential advantage of the constructions disclosed herein is the capability of employing working rolls with long barrels, on which grooves can be cut, depending on needs and pass dimensions.
  • a further advantage is that the roll stand has no connecting members for driving the working rolls, whereby, in adjusting the working rolls gap, the gearing characteristic is not subject to any changes.
  • FIG. 1 is a view vertical cross-sectional of the roll support in a cluster mill
  • FIG. 2 is an end elevation of the working rolls
  • FIG. 3 is a sectional view taken along line A-A of FIG. 1;
  • FIG. 4 is a sectional view of the roll stand taken along the line BB of FIG. 1;
  • FIG. 5 is a sectional view of roll support taken along the line CC of FIG. 1;
  • FIG. 6 is a sectional view of the roll support taken along the line DD of FIG. 1;
  • FIG. 7 is a sectional view of the roll support taken along the line E-E of FIG. 1',
  • FIG. 8 is the sectional view of the roll support taken along the line F--F of FIG. 1;
  • FIG. 9 is a view in side elevation of an'alternate embodiment of roll support
  • FIG. 10 is an end elevation of the working rolls of the embodiment of the roll stand of FIG. 9;
  • FIG. 1 1 is a sectional view of the embodiment of roll stand of FIG. 9 taken along line GG thereof;
  • FIG. 12 is a view in side elevation of a third embodiment of a roll stand
  • FIG. 13 shows another embodiment of a roll stand in side elevation taken from the side of the working rolls with parts in section to show a portion of a screw mechanism for adjustment of the gap between rolls.
  • the cluster mill with cantilevered rolls comprises the housing 1 of the roll support stand and two shiftable plates 2,3, mounted on four columns 4, see also FIG. 5.
  • the columns 4 are fixed in the housing 1 and the rear plate 5.
  • the columns 4 fulfill at the same time the function of connecting the housing 1 and the rear plate 5.
  • the plates 2 and 3 are joined together by means of connecting members 6,7,8 and relative connecting screws, as shown in FIGS. 1,3.
  • the pinion gear 9 is provided at its rear end with a splined shaft, through which it is connected with the main driving shaft 13.
  • a bevel gear 14 is mounted so that a number of roll stands may be driven from a common shaft 15, or a coupling may be provided, when the roll stands are each driven individually from a separate motor.
  • the driven pinion gear 9 as shown in FIG. 3 meshes with pinion gear 10.
  • the pinion gear 9 is journaled in bearings 16 and pinion gear 10 is journaled-in bearings 17 also mounted in the holes of bosses l8 and 19 protruding from plates 2 and 5, as shown in FIG. 6.
  • the main driving shaft 13 is mounted in bearings 20 located in the rear plate 5.
  • the axial forces acting on the main driving shaft 13 are resisted by thrust rings 21 and 22, fixed on this shaft, the ring 22 being secured b a nut 23, as shown in FIGS. 1,9, and 12.
  • the axes of intermediate pinion gears 9 and 10 simultaneously, determine the axes of rotation of the set of rolls.
  • the intermediate axis of the pinion gear9 is the lower fixed axis of rotation
  • the axis of the intermediate pinion gear 10 is the upper fixed axis of rotation.
  • the intermediate pinion gear 10 meshes with the pinion gear 11, transmitting drive to the lower working roll.
  • the drive for the upper working roll is provided by intermediate pinion gear 10 with meshing direct pinion gear l2.
  • the pinion gear 11 is journaled in bearings 26 and 27, as shown in FIGS. 5 and 6.
  • the bearings 24 and 25 are mounted in chock 28, while the bearings 26 and 27 are mounted in the chock 29.
  • the chocks 28 and 29 are mounted for rotary movement through any desired angle to permit adjustment of the working rolls about fixed upper and lower axes of rotation.
  • the frame 28 may make a rotary movement about the axis of boss 18 and chock 29 may have similar rotary movement about boss 19, which extend from plates 2 and 3, as shown in FIG. 6.
  • the direct pinion gears 11 and 12 are toothed shafts. As shown in FIG. 1, at their front ends, the pinion gear 1 1 and the pinion gear 12 are provided with notches for connection with bevel sleeves 30, on which beveled clamping sleeves 31 are set, which clamp and fix in suitable position the lower and upper working rolls 32.
  • the roll stand is provided with tie rods 33.
  • the tie rods 33 are fixed at their inner ends in the direct pinion gears 11 and 12 by means of plates 34, while their outer ends are threaded, and nuts 35 are screwed onto them, to press the bevel sleeves onto the splined ends of direct pinion gears 11 ,12.
  • the supporting shafts 39 of back-up rolls 40 are mounted from the work side in bearings 41, and on the drive side in bearings 42.
  • the axial forces acting on supporting shafts 39 are absorbed by thrust rings 43,44, mounted on these shafts.
  • the bearings 41 of supporting shafts 39 for the lower back-up rolls are mounted in the lower chock 45, see FIGS. 1 and 5 while the bearings 41 of supporting shafts 39 for the upper back-up rolls are mounted in the upper bearing chock 46.
  • the bearings 42 of supporting shafts 39 for the lower back-up rolls are mounted in the rear lower bearing chock 47, and the bearings 42 of supporting shafts 39 for upper back-up rolls are mounted in the rear upper bearing chock 48.
  • the front lower check 45 is provided with a pin 49 and the front upper bearing housing 46 is provided with a pin 50, as shown in F IG 5.
  • the pins 49 and 50 are mounted in bores in the plate 3.
  • both are provided with bosses 51 and 52.
  • the chock 47 is provided with a boss 55 in which a bore is made for insertion therein of the pin 56 protruding from the plate 2.
  • the chock 48 has a boss 57, in which also a bore is made to insert therein the pin 58, protruding from the plate 2, as shown in FIG. 7.
  • bosses and 57 are made as circular segments, which penetrate the bosses 59 and 60, protruding from plate 2, as shown in FIG. 8.
  • the front parts of the supporting shafts 39, FIG. 1, are tapered and expansion sleeves 63, fixing the position of back-up rolls 40 are mounted on these tapered front parts.
  • the expansion bevel sleeves 65 are mounted on the bevel ends of shafts 39 are secured by means of nuts 64.
  • fixing sleeves 65 and 66 and pressure plates 67 pressed on by screws 68 are utilized.
  • the rolling mill is provided with screw 69, with right-hand and left-hand threads.
  • the screw 69 is screwed into a nut 70 having a right-hande thread and into a nut 71 having a left-hand thread.
  • the nut 70 has pins 72 protruding therefrom, while the nut 71 has similar pins 73.
  • the pins 72 and 73 of the nuts 70 and 71 enter into the bores of guides 74.
  • the guides 74 cooperating with nut 71 are mounted shiftably in the front lower bearing chock 45 and the rear lower bearing chock 47.
  • the screw 69 is located in bearings 75 and 76.
  • the screw 69 may be rotated by means of a worm gear system consisting of worm wheel 77 and worm shaft 78.
  • the worm shaft 78 which has in its rear part splines 79 FIG. 8, which can be displaced inside the bevel gear 80.
  • the bevel gear 80 is journaled in a bearing chock fixed to the rear plate 5, and meshes with bevel gear 82 which journaled in a bearing chock 83 fixed to the housing of the roll stand 1.
  • the roll stand is provided with springs 84 as shown in FIGS. 1 and 7.
  • the springs 84 are located in guideways 85 and 86 which are pivotally mounted by means of bolts 87 in the front lower bearing housing 45 and the front upper bearing housing 46, and the rear lower bearing housing 47 and the rear upper bearing housing 48.
  • the roll stand In order to exert a suitable preliminary pressure to the lower working roll 32 from the lower back-up rolls 40 and to the upper working roll 32 from the upper back-up rolls 40 the roll stand is provided with driving cylinders 88 and 89, FIGS. 1, 5 and 6.
  • the driving cylinders 88 are located between plates 2 and 3 and fixed to the frame 28 and to cantilevered lower plates 90, as well as to the frame 29 and to the cantilevered upper plates 91 as shown in FIG. 6.
  • the cantilevered lower plates 90 are fastened by means of screws, one to the front lower bearing housing 45, the other to the rear lower bearing housing 47.
  • the cantilevered upper plates 91 are fastened by means of screws to the front upper bearing housing 46 and to the rear upper bearing housing 48.
  • stops 92 are built in the frame 28, and further.
  • stops 93 are provided in the cantilevered lower plates 90 stops 93 . Stops 94 and 95 are provided in the upper frame 29, and in the cantilevered upper plates 91, respectively.
  • the driving cylinder 89 is fixed at one end to the frame 28, and with the other end to the frame 29, as shown in FIG. 5.
  • the roll stand For rough positioning of rolls in their axial movement together with plates 2 and 3 and mechanisms built on plates and between plates, the roll stand has the driving cylinder 96, shown in FIG. 1, which is fastened at one end to the plate 2 and at the other end to a mounting 97 joined with the rear plate 5 by means of screws.
  • the roll stand is provided with driving cylinder 98, FIG. 7, which is fastened to two catch mechanisms 99 situated in guideways 100.
  • FIGS. 1 and 4 In order to protect all mechanisms contained within the housing of the roll stand 1 while moving the rolls in a direction perpendicular to the line of rolling against noxious external conditions, to the plate 3 from the roll side a shield 101, FIGS. 1 and 4, sealed by means of rings 102 and packings 103, is fastened.
  • the roll stand is provided with sealing plates 104 and 105 and sealing inserts, the lower sealing insert 106 and the upper sealing insert 107, as shown in FIGS. 4,10,13.
  • the roll stand On the side of rolls, the roll stand has a lower shield 108 and an upper shield 109.
  • the roll stand When a common drive is applied for a plurality of stands, as shown in the embodiments in FIGS. 1,9,12, the roll stand is provided with lower housing 110 and upper housing 111 for mounting acommon driving shaft 15 and shielding the bevel gears.
  • the roll stand is equipped with couplings 112, FIG. 2, secured to the ends of shaft 15.
  • the shafts 113 of back-up rolls 40 are journaled in bearings 114 located in pivotal plates 115 as shown in FIGS. 9 and 10.
  • the pivotal plates 115 are mounted on eccentric shafts 116 journalled in bearings 117.
  • the eccentric shafts 116 are journaled in bearings 118 and 119.
  • the bearings 118 are mounted in plate 3 and the boss protruding from plate 3, while the bearings 119 are mounted in plate 2.
  • the rolling mill is provided with screw 63, which screw has a righthand and left-hand thread.
  • the screw 63 is screwed into nut 70 having the righthand thread, and into nut 71 having the left-hand thread.
  • the nut 70 has pins 72 projecting therefrom, and the nut 71 has similar pins 73.
  • the pins 72 and 73 of nuts 70 and 71 enter into bores of tie bolts 121.
  • the tie bolts 12 1 are connected in an articulated manner through bolts 122 with arms 123 protruding from sleeve 124.
  • the sleeves 124 are connected with eccentric shafts 116 by means of splines 125.
  • the sleeves 124 are fixed on eccentric shafts 116 by means of flanged sleeves 126.
  • the screw 63 is seated in bearings 75 and 76.
  • the shell 75 is located in mounting 127, while the bearing 76 is located in mounting 128.
  • the mountings 127 and 128 are fastened to the plate 3.
  • the roll stand For exerting a suitable initial pressure between the working roll 32 and the lower back-up rolls 40 and between the upper working roll 32 to the upper backup rolls 40, the roll stand is provided with driving cylinders 88.
  • the driving cylinders 88 are mounted between plates 2 and 3 and fixed to the plates 2 and 3 and frames 28,29.
  • the plate 3 is sealed by means of rings 102 and packings 103.
  • the roll stand is provided with lower sealing insert 106 and upper sealing insert 107.
  • the shafts 113 of backup rolls 40 are journaled in bearings 114 mounted in pivotal plates 129.
  • the pivotal plates 129 are journalled in bearings 130 inserted in chocks 131 which are mounted on rockers 132.
  • rockers 132 are mounted in articulated manner on bolts 133 located in the boss 134 protruding from the plate 3.
  • the rolling mill is provided with shafts 135 and 136.
  • the shaft 135 has one end cut with a right-hand thread, and the other end provided with a tapered pin.
  • the shaft 136 has one end cut with a left-hand thread and the other end is provided with a tapered pin.
  • the shaft 135 is screwed into a nut 137 which has a right-hand thread.
  • the shaft 136 is screwed into a nut 138 having the left-hand thread.
  • the nuts 137 and 138 are mounted and fixed in sleeves 139 and 140, which are connected with worm wheel 141 through the groove 142, and the worm wheel 141 meshes with the worm 143 located in a mounting 144.
  • the shifts 135 and 136 have guideways 145 and 146.
  • the rolling mill in the embodiment shown in FIGS. 12,13 is provided with screws 147 which have righthand and left-hand threads.
  • the screws 147 are screwed into nuts 148 having a right-hand thread, and nuts 149 having a left-hand thread.
  • the nuts 148 have covers 150, with pins 151 protruding therefrom. Also, from the nuts 149 protrude pins 152. The pins 151 and 152 penetrate bores of tie bolts 153 connected in an articulated manner with rockers 132 across pins 154.
  • the pins 154 are fixed in sleeves 155.
  • the screws 147 are rotated by means of worm gearing, consisting of worm wheels 156 and worm shaft 157.
  • the worm wheels 156 are journalled in bearings 158 and 159, the bearings 158 being secured to nuts 148, and bearings 159 to covers 150.
  • the worm shaft 157 in order to be rotated, is provided with a square pin at its front end protruding outside the nut 148 and cover 150.
  • the roll stand is provided with driving cylinders 160 fastened in articulated manner to the boss 134 of the front plate 3 and to rockers 132, as shown in FIG. 13.
  • the shifting of rolls in a direction perpendicular to the rolling line in a required position is effected by operating the driving cylinder 96 to perform a rough displacement, and by operating the driving cylinder 98 for precise shifting of rolls which causes the spring catches 99 to engage precisely cut notches on columns 4 and locate the rolls in the required position.
  • the spring catches 99 Prior to consequent displacement of rolls into the required position and before operating the driving cylinder 96, performing a rough adjustment, the spring catches 99 are first loosened by the driving cylinder 98 to effect the return movement.
  • the driving cylinder 98 is again actuated.
  • the working rolls 32 are adjusted in a symmetrical manner in relation to the rolling line, with the result that the theoretical rolling line remains constant independently of the size of gap between the working rolls 32.
  • the adjustment of back up rolls is effectedby driving a shaft with riotched bevel gear 82 which causes the rotation of the bevel gear 80 which is in mesh with it.
  • The-bevel gear 80 drives the worm shaft 78 and permits a drive transmission of drive independently of the adjustment of working rolls 32.
  • the worm shaft 78 drives the worm wheel 77 fixed on screw 69.
  • the rotary movement of screw 69 causes through nuts and 71 and guides 74 the upper bearing chock 46 together with the upper bearing chock 45 and the rear lower bearing chock 47, depending on the direction of rotation of bevel gear 82.
  • the working rolls are pressed onto the back-up rolls 40 by means of the driving cylinders 88,89 and frames 28,29 and cantilevered plates 90,91.
  • a rotary movement about fixed axes of rotation performed by back-up rolls 40 involves the same movement of working rolls 32.
  • a reduction or increasing of the distance between the axes of the working rolls 32 is effected by suitable rotation of the shaft with notched bevel wheel 82.
  • the drive of cluster mill with cantilevered rolls is transmitted either from the driving shaft across the bevel wheel 14 on the main driving shaft 13, as shown in FIGS. 19,12 or by the intermediary of a clutch mounted on the main driving shaft 15, when for driving the roll stand an individual driving motor or a spur gear with driving shaft protruding to enable the drive of roll stand is used.
  • the torque from the main driving shaft 13 is transmitted to the splined shaft of the intermediate pinion gear 9 which is driven independently from the position of the working rolls in a direction perpendicular to the rolling line, since the spline shaft of the intermediate pinion gear 9 can be displaced inside the main driving shaft 13 but remains in mesh with the shaft, as shown in FIGS. 1,9,12.
  • the intermediate pinion gear 9 meshes with the other intermediate pinion gear 10 separating thus the drive on the lower working roll 32 and the upper working roll 32.
  • the drive of the lower working roll 32 is affected through direct pinion gear 11.
  • the drive of the upper working roll 32 is effected by the direct pinion gear 12.
  • the direct pinion gears 11 and 12 driving the working rolls 32 are travelling about pitch I diameters of the intermediate pinion gears 9 and 10, without alteration of the gearing characteristic.
  • Changing of one of the working rolls 32 is effected by partially removing the nut 38, removing the nut 37 and press sleeves 36 and partial removal of the nut 36 thus enabling the loosening of clamping sleeves 31.
  • the setting of the gap between the working rolls 32 in the embodiment shown in FIGS. 1,10,11, is effected by rotating the bevel gear 82.
  • the bevel gear 80 drives the worm shaft 78 mounted slidably therein.
  • the splines 79 of the worm shaft 78 ensure a transmission of the torque independently of the adjustment of the working rolls 32.
  • the worm shaft 78 drives the worm wheel 77 fixed on screw 63. Rotation of the screw 63 causes rotation of the eccentric shaft 116 through nuts and 71, tie
  • the adjustment of the working rolls 32 in the embodiment of the roll stand shown in FIGS. 12,13, is carried out by rotating the worm shaft 157, which causes the revolution of worm wheels 156.
  • worm wheels 141 are mounted, the worm wheels being rotated by worms 143.
  • the worm wheels 141 transmit the torque on nuts 137 and 138, which causes a displacement of the shafts 135, 136.
  • the shafts 135 and 136 move to cause the removal of tapered pins of these shafts from bearings 130 or move in the other direction whereupon the tapered pins of shafts and 136 penetrate bearings 130 and are clamped therein.
  • the above described cluster mills according to the present invention are capable of rolling metals, preferably rods and bars with cantilevered working rolls of small diameter with practical elimination of roll bending even with a considerable length of the working roll barrel, on which a number of pass grooves, depending on the requirements, are cut, whereby the capability is provided for moving the rolls in a direction transverse to the rolling line.
  • the above cluster mills according to the present invention do not have disadvantages of roll stands used hitherto. On the contrary, they show a number of important advantages, the main of which is the possibility of using working rolls of small diameter limiting spread and enlarging elongation.
  • Another advantage is the capability of employing long working roll barrels, on which grooves can be cut depending on requirements such as pass dimensions.
  • a further advantage consists in the fact that the roll stand has no connecting members for driving the working rolls, whereby, in setting up the working rolls, the gearing characteristic is not subject to any alteration.
  • Another advantage is the capability of exact displacement of the working rolls on which grooves are cut and setting these rolls into the required position.
  • a cluster mill for rolling metal stock comprising:
  • first movable plate in spaced relation to said fixed plate and generally parallel thereto, and a second movable plate between said first movable plate and said fixed plate, and spaced from and parallel to said plates;
  • said means for driving said working rolls comprises a first chock and a second chock, means for pivotally mounting said chocks on a said movable plate, a first intermediate pinion gear passing through said last mentioned movable plate with the axis thereof coincident with the pivotal axis of the said first chock and a second intermediate pinion gear having its axis coincident with the pivotal axis of said second chock, said intermediate pinion gears being in mesh, a first direct pinion gear carried by said first chock and in mesh with said first intermediate pinion gear and a second direct pinion gear carried by said second chock and in mesh with said second intermediate pinion gear, and means for axially connecting each said direct pinion gear with a said working roll.
  • said rough adjustment means comprising cylinder means extending in the direction of the roll axes.
  • said fine adjusting means comprising cylinder means extending transverse to the roll axis direction and means operatively connecting said last mentioned cylinder means to a said plate and said movable plate guide means.
  • a cluster mill for rolling metal stock comprising:
  • a second plate generally parallel to said first plate and spaced therefrom, and mounted for transverse movement;
  • first and second working rolls in juxtaposition on the side of said second plate remote from said fixed plate;
  • said working rolls 4 a pair of back up rolls in uxtaposition with each said working roll;
  • pivotal supporting means comprises a shaft for each pair of supporting plates journalled in said second plate and said last mentioned means comprising eccentric portions of said shaft to which a pair of said supporting plates are journalled, and means for rotating said shafts.
  • said means for supporting and moving said back up roll supporting plates comprises rocker means for each pair of plates, means for pivotally supporting each said rocker means from said second plate, means for pivotally connecting each said pair of plates to a said rocker means, said means for moving said pairs of supporting plates comprising means for moving said rocker means.
  • said last mentioned means comprises a pair of tie bolts each connected to a said rocker means, and nut and screw means connected to said tie bolts and having a worm wheel meshing with a worm shaft.
  • said means for pivotally connecting each said pair of plates to a said rocker means comprises multi-part shaft means carried by said pair of plates having the parts thereof axially movable and normally extending into said rocker means, and means for moving said multi-part shaft means axially to decrease the length thereof to a length no greater than the spacing of said pair of plates, whereby to permit withdrawal of said multi-part shaft means from said rocker means.
  • a cluster mill for wolling metal stock comprising:
  • back up roll means comprising a pair of spaced plates having a back up roll journalled therein;
  • multi-part shaft means pivotally connecting said supporting plates to said second pair of plates, and means for disconnecting said supporting plates and said pair of plates comprising means for moving said shaft means axially.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Rolling (AREA)
  • Crushing And Grinding (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
US00042910A 1969-06-07 1970-06-03 Cluster mill with cantilevered rolls Expired - Lifetime US3718026A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL134056A PL64032B1 (enExample) 1969-06-07
PL14000370A PL72788A6 (enExample) 1970-04-14 1970-04-14

Publications (1)

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US3718026A true US3718026A (en) 1973-02-27

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US00042910A Expired - Lifetime US3718026A (en) 1969-06-07 1970-06-03 Cluster mill with cantilevered rolls

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US (1) US3718026A (enExample)
JP (1) JPS5110191B1 (enExample)
AT (1) AT313229B (enExample)
CS (1) CS190313B2 (enExample)
DE (1) DE2027538A1 (enExample)
FR (1) FR2050094A5 (enExample)
GB (1) GB1300729A (enExample)
SE (1) SE380742B (enExample)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182149A (en) * 1975-11-14 1980-01-08 Hille Engineering Company, Ltd. Roll stand
DE3107858A1 (de) * 1980-03-03 1982-01-07 Nippon Steel Corp., Tokyo Walzgeruest fuer stangen und walzdraht
US4446712A (en) * 1981-12-14 1984-05-08 Southwire Company Propped cantilevered roll stand
US5524469A (en) * 1993-11-08 1996-06-11 Sherwood; William L. Rolling mill stand
US9038430B2 (en) 2009-07-07 2015-05-26 Sms Siemag Ag Cluster arm arrangement for the intermediate roll sets of 18 HS roll stands

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1900032A (en) * 1930-10-25 1933-03-07 Worthington Warren Bar mill
US2479974A (en) * 1943-05-05 1949-08-23 Armzen Company Design and construction of rolling mills
US3147648A (en) * 1962-06-26 1964-09-08 Sendzimir Inc T Strip mill with roll cartridge
US3461704A (en) * 1966-12-29 1969-08-19 Textron Inc Cluster arrangement
US3477268A (en) * 1967-02-03 1969-11-11 Voest Ag Device for shaping metal bars

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1900032A (en) * 1930-10-25 1933-03-07 Worthington Warren Bar mill
US2479974A (en) * 1943-05-05 1949-08-23 Armzen Company Design and construction of rolling mills
US3147648A (en) * 1962-06-26 1964-09-08 Sendzimir Inc T Strip mill with roll cartridge
US3461704A (en) * 1966-12-29 1969-08-19 Textron Inc Cluster arrangement
US3477268A (en) * 1967-02-03 1969-11-11 Voest Ag Device for shaping metal bars

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182149A (en) * 1975-11-14 1980-01-08 Hille Engineering Company, Ltd. Roll stand
DE3107858A1 (de) * 1980-03-03 1982-01-07 Nippon Steel Corp., Tokyo Walzgeruest fuer stangen und walzdraht
US4446712A (en) * 1981-12-14 1984-05-08 Southwire Company Propped cantilevered roll stand
US5524469A (en) * 1993-11-08 1996-06-11 Sherwood; William L. Rolling mill stand
US9038430B2 (en) 2009-07-07 2015-05-26 Sms Siemag Ag Cluster arm arrangement for the intermediate roll sets of 18 HS roll stands

Also Published As

Publication number Publication date
CS190313B2 (en) 1979-05-31
GB1300729A (en) 1972-12-20
JPS5110191B1 (enExample) 1976-04-02
AT313229B (de) 1974-02-11
DE2027538A1 (de) 1970-12-10
SE380742B (sv) 1975-11-17
FR2050094A5 (enExample) 1971-03-26

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