US1865286A

US1865286A - Universal rolling mill

Info

Publication number: US1865286A
Application number: US329268A
Authority: US
Inventors: Andrew W Soderberg; Allan G Dahlgren
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-12-29
Filing date: 1928-12-29
Publication date: 1932-06-28
Anticipated expiration: 1949-06-28

Description

J3me 3932' A. W. SODERBERG ET AL 1,8653% UNIVERSAL RQLLING MILL Filed De 29, 1928 5 Sheets-Sheet 1 3mm 1932- A. w. SODERBERG ET AL UNIVERSAL ROLLING MILL Filed Dec. 29, I928 5 Sheets-5119M 2 June 1932- A. W. SODERBERG ET AL L 9 UNIVERSAL ROLLING MILL Filed Dec. 29, 1928 5 Sheets5heec 5 fi/vpe w W 509555525 ana 4444M 6. DHP/LciEE/V.

June 23, R932. A. W. SODERBERG ET AL 198659235 UNIVERSAL ROLLING MILL Filed Dec. 29, 1928 5 Sheets-Sheet 4 D Q Nu.

3mm W32: W; $QDERBERG ET AL 3 9 v UNIVERSAL ROLLING MILL I Filed Dec. 29, 1928 s Sheets-Sheet s Patented June 28, 1932 UNITED STATES PATENT OFFICE 1 I H ANDREW W. SODERBERG, OF MUNHALL, AND ALLAN-G. DAHLGREN, F PITTSBURGH,

PENNSYLVANIA UNIVERSAL ROLLING MILL Application filed December 29, 1928. Serial No. 329,268.

Our invention relates to the construction of universal rolling mills having horizontal rolls which are positively driven and vertically adjustable, and vertical side rolls which are horizontally adjustable and frictionally driven by contact with the metal being rolled, and more particularly relates to such mills as adapted for use in rolling H and I-beams and similar flanged structural shapes.

)0 Referring now to the drawings, Figure 1 is aside elevation, partly insection, showing a universal mill for rolling flanged shapes constructed to embody the. novel features of our invention.

Figure 2 is a sectional plan of the mill of Figure 1, the section being taken on the irregular line II-II of Figure 1.

Figure 3 is a plan of portions of the apparatus of Figures 1 and 2, showing details in the construction and arrangement of the adjusting mechanism for the vertical side rolls forming part of this invention.

Figure 4 is a detail side elevation showing further detailsin the construction of the overhead side roll adjusting mechanism shown in Figure 3.

Figure 5 is a sectional elevation, on the line V-V of Figure 2, showing details in the eonstruction and arrangement of the vertical side rolls and side roll adjusting mechanism.

Figure 6 is a plan on a larger scale showing details in the construction of the chucks for the vertical side rolls.

Figure 7 is a side elevation of the apparatus of Figure 4, partly in section, showing details in the construction of the chuck and vertical roll as mounted therein.

Figure 8 is a sectional plan of the chuck of Figures 6 and 7.

In the drawings, the

numerals

2, 2 designate the two roll housings of a universal rolling mill for rolling flanged shapes and similar rolled products, having horizontal top and bottom rolls 3 and 4 which are positively driven, and vertical rolls 5 and 6 which are frictionally driven by contact with the side surfaces or flanges of the shape being rolled, the material being impelled by the horizontal rolls.

The housings are fastened on shoes 7, 7 by bolts 8 in the usual manner and one housing 2 (the one at the left in Figure l) is adapted to be moved sidewise on the shoes- 7 to vary the distance between the

housings

2, 2 to suit the length of the rolls 3 and 4: for the various kinds and sizes of shapes rolled on the mill and also to facilitate changing the horizontal rolls, which frequently occurs because of the different sizes of shapes rolled on the mill.

The horizontal rolls have

necks

9, 9 and 10, 10 which extend through the windows of the housings and are rotatably mounted'in

bearings

11, 11 and 12, 12 that are located within the housing windows and are se-' cured therein so that the rolls 3 and 4 and the bearings are vertically adjustable. Each of-the housings, which are of the closed t'op type, has a housing nut 13 in its upper and lower end through which the housing screws 14 and/or 15 extend into operative engage ment with the horizontal roll bearings 11 and 12, and on one end of each housing screw is a worm-wheel 16 by which the screws 14 and ]5 are rotated in adjusting the top and bot- 7 tom rolls vertically in the way to be described. Also mounted in the housing windows, between the necks 9 and 10 of the horizontal rolls, are the vertical frictionally driven side rolls 5 and 6, these rolls being rotatably mounted in chucks 32 by which they are adjustably held in recesses or offsets in the opposite side faces of the window of each housmg. The vertical rolls 5 and 6 and their chucks 32 do not move vertically during the 85 operation of the millbut are arranged to move horizontally toward and away from each other (and the end surfaces of the horizontal rolls 3, 4) as will be explained hereinafter.

The we. in which the vertical rolls 5 and 6 the windows of the roll housings, which form novel and important features of our invention, will now be described.

The body of the vertical rolls is an annulus having a peripheral working face 18 and an axial opening or bore 19 of relatively large size, the rolls being counterbored to form a rabbet at each end thereof.

Mounted within the bore of the roll body are the rollers and race rings of an anti-friction bearing, four rows of short cylindricl rollers 20 being used in the bearing shown. The inner face of the annular roll body is fitted with three

annular race rings

21, 22, 23 having tapering, roller engaging faces, the middle race ring 22 having a double taper. Separators 24 prevent axial movement of the rings relative to the roll body when the roll, the bearing and pin 26, on which the rollers turn, are secured in assembled relation.

The bearing pin 26 has two race rings 27,

i 27 fitted thereon, each of which has oppositely tapering roller engaging inner faces. Annular pro ections 28 on the inner tapering faces of the rings 27 at the middle of their length, serve as separators between the opposite ends of the two outside rows of the rollers 20 and there also is an annular separator 25 between the rowsof rollers to maintain them in position. A

The bearing'pin 26 has two

race rings

27, 29 on one end, which is rectangular in outline. On the other end of the pin, which is of slightly reduced diameter, is a collar 30 which is rectangular in outline and which is divided lengthwise into two halves.

The ends of the head 29 and ends of the split collar are rabbeted for a purpose to be described later. Heads 31, which are secured in the rabbeted ends of the roll body by cap bolts 32 having countersunk heads, secure the rollers 20 and other parts of the anti-friction bearing and the pin 26 in place in the bore of the vertical roll.

The chuck 32, in which the vertical side rolls are rotat-ably mounted, has horizontal top and

bottom sides

33, 34

vertical ends

35, 35 and a flanged vertical side 36.

The other vertical side 37 of the chuck 1s open to permita side roll 5 or };6 with the roller bearing and bearing pin 26 in assembled relation therewith to be inserted between the top and bottom sides of the chuck. The

sides

33, 34 of the chuck 32 have a slot 38 therein which extends inwardly from the open side of the chuck and in which the head 29 of the lower end and the split collar 30 on the upper end of the pin. 26 are seated. The ends of these slots ave rabbets 39 to enga e the rabbetedends of the pin head 29 an the split collar 30 and prevent any axial movement of the pin and roll relative to the chuck.

It will, of course, be understood that the most careful and exact machine work will be used in making the bearings for the vertical rolls and forming the rabbeted slots 39.

After the roll is mounted in the chuck the cap 40 is secured in place on the open side of the chuck by bolts 41 and nuts 42 so as to rigidly hold the head of the pin and its split collar in place in the slots in which they are seated.

It will be noted that by mounting the vertical roll with its bearing and bearing pin in this way and by securing them in place on the chuck 32 by the removable cap 40, that the vertical rolls 5 and 6 can be removed from the chuck and replaced by others without disturbing the pin and rollers in the vertical roll. This is an important advantage because of the time saved in making roll changes and increase in the time available for the shape rolling operations.

Projecting outwardly from the opposite ends of the chuck 32 at each corner thereof are the

arms

43, 44 by which the chucks are supported in the recesses in the window of the roll housing, these arms being slidably seated in offsets in the side surfaces of the housing windows. The vertical faces 44 of these arms taper lengthwise and each taper surface is provided with a wedge 45 secured thereon so as to be adjustable lengthwise. The dovetail projection on one face of the wedges engages the dovetail recess in the coacting face 44 of the

arms

43, 44 to secure the wedge in place. A lug 46 on one end of the wedges has a slotted hole through which a stud bolt 47 extends from the end of the chuck arm on which the wedge is mounted. Nuts 48 on the stud bolts, one on each side of the lugs, enable the wedges to be adjusted lengthwise on arms and lock the wedges in adjusted position on the arms 43, 44.- The outer faces of the wedges 45, when secured. on the arms of the chuck, engage with the side surfaces of the offsets in the housing windows, the wedges being chuck which is horizontally movable in the ofi'sets. In addition to taking up wear, the

wedges enable the chuck and its side roll to be alined sidewise in the housing window when required'by retracting the wedges on .one end and advancing those on the opposite 'end of the chuck.

The chuck 32 with its vertical roll in place thereon is mounted in the offsets of the housing windows with the upper surface 49 of the chuck arms 43 in close engagement with the horizontal top face of the offsets. The lower face 50 of the oflsets in the housing windows tapers lengthwise and mounted thereon are wedges 51 on which the lower chuck arms 44 slide in operating the mill. These wedges, which have a lug 52 on one end with a slotted hole in the lug are adjusted as required to take up wear and maintain the desired sliding fit between the chuck and housing. Stud bolts 53 which project outwardly from the outer face of the housings extend through the slotted holes in the lugs 52 and nuts 54, 55 on these bolts enable the wedges to be adjusted and hold them in adjusted position.

The chucks 32 are yieldingl-y secured to lengthwise horizontal cross-heads 56 of which there is one alongside each roll housing. Bolts 57 which extend through slotted holes in the chucks and abutting flanged face of the cross-heads fasten the cross-heads in place and preferably a coil spring 57 is secured on each of the bolts 57. The cross-heads have feet 58 by which they are slidably mounted on ways 59, a wedge 60 on the bottom of the feet 58 being used to form wearing surfaces and enable the cross-head to be alined vertically with respect to its roll chuck and to the quills 67 by which the cross-head is manipulated. Stud bolts 61 on the feet of the cross-heads and nuts 62 hold the wedges 60 in adjusted position on the feet 58.

The cross-heads which form the means for moving the vertical rolls and their chucks horizontally and for holding them in operative position have counterbored holes 63 in each end. inwhich a nut 64 is seated, the nut being held against rotation by a feather key 65 and being removably secured in the counterbored hole by a gland 66 which is bolted to the face of the cross-head.

Extending through the holes 66 and nuts 63 are rotatable externally threadedtubular shafts or quills 67 by which the cross-heads are actuated in adjusting the vertical rolls 5 and 6 horizontally in the mill. Each quill is telescoped over a horizontal tension rod 68 which projects outwardly from the face of the roll housing, being held thereon by a head 69 on one end of the rod which is seated in a recess in the inner face of the housing. A key 70 prevents rotation of the rod in the hole through which it extends. The outer end of each. tension rod has a transverse slot 71 through which a taper key 72 extends and on the tension rod 68. between the outer end of the quill 67 and the key 72, is a collar 73 which is keyed to the rod to prevent rotation.

Between the collar 73 and the adjacent end of the quill on the tension rod 68 is a plurality of washers or shims 74, some of which may be made of anti-frictionmetal; On the inner endof each quill and keyed or otherwise fastened thereto, is a worm-wheel 75 by which the quills are positively rotated, the

I worm-wheel meshing with a driving worm 76 which is mounted on a vertical shaft as will be described.

Heavy compression springs 126 telescoped over lengthwise horizontal eye bolts 127 ex- I tend through lugs 128 on the housings 2 to lugs 129 on theends of the cross-heads 56 and tend to move the cross-heads away from the housings and effectually take up any back lash in the parts and thereby prevent rattling and other noises.

The eyes in the bolts 127 are connected to one end of the side guides 130 which extend into proximity to the working face of the vertical rolls 5 and/or 6 so that the springs 126 also yieldingly hold one end of the guides in position. The other end of these guides have a similar arrangement of bolts 131 and springs 132 to yieldingly hold this end of the guide in position relative to the vertical roll with which it is associated. By this arrangement, the guides are yieldingly held in place while they also are adjustable with the vertical roll when the roll is moved inwardly or outwardly by the cross-head to which itis attaehed.

The worm-wheel 75, keyed or otherwise fastened on the inner end of each quill 67, meshes with a worm 76 which is mounted on a vertical shaft 77. the worms and wormwheels being secured in bearings 7 8 which are bolted or otherwise secured on the outer face of the roll housings. There are four of the vertical shafts 77, one forv actuating each quill which are interconnected by cross-shafts 79 and 80, and bevel gears 81 so as to rotate the four side roll adjusting quills 67 in unison.

A drive shaft 82 at the top of the housings is connected to the cross-shafts 79 and and in turn is connected by a spur gear 83 and pinion 84 to a counter-shaft 85 which is connected to and operated by the driving motor 86, on a base. plate 87 secured'on top of the pinion housings. Each vertical shaft 77 is provided with jaw clutch 88 which nors mally is held in operative position by a spring 89, the slidable member of the clutch being moved by a. hand lever 90 to disconnect the jaws of the clutch and enable any one quill 'to remain stationary while the others are turning or, by disconnecting all but one of the clutches to move but one of the quills. A series of jaws are provided on these clutches so as to enable any one vertical shaft 77 to be moved through a small part of one revolution and in this way provide a fine adjustment of each quill in relatively adjusting the vertical rolls into operative position.

The top roll 3 is provided with acounterw balancing mechanism by which its necks 9 4 one end thereof. The levers 95 on the rock shafts 96 are connected by suitable links 99 to the cross-head 100 of a single acting fluid pressure cylinder 101 which is positioned on the support. The fluid presure is not cut off when the mill is in operation, as the housing 0 screws 14 force the roll 3 downwardly against the pressure, as is done in lowering this roll.

The worm-wheels 16 on the outer ends of the housing screws 14 by which the top roll 3 is adjusted, mesh with worms 102 on the horizontal shaft 103 that is secured in bearings 104 above the roll housings. The wormwheels 16 on the lower end of the housing screws 15 for adjusting the bottom roll 4 have similar worms 102 which are mounted on the horizontal shaft 105 whichis mounted in bearings 106' below the roll housings. The horizontal worm-shafts 103, 105 are interconnected by a vertical shaft 107 and bevel gears 108 so as to turn the

housing screws

14 and 15 in unison and to the same extent when adjusting the horizontal rolls into operative position. The horizontal worm-shaft 103 is operatively connected at one end to a driving motor 104 mounted on the base plate on top of the pinion housings 111. Jaw clutches 105 on the horizontal shafts 103, 105 provide means for disconnecting such of the housing screws 14, 15' as are to remain stationary while the others are being rotated to adjust them when preparing the mill for the rolling operations.

The horizontal rolls 3 and 4 which are alike insize and contour, are connected at the end of one neck by couplng boxes 10 6 and

spindles

107, 108 to the necks of the meshing top and bottom pinions 109, 110 in the pinion housing 111 at one side of the rolling mill and one neck of the lower pinion 110 is provided with a coupling member 112 by which the pinions are operatively connected bya lead spindle to a reversing, adjustable speed mill driving motor (not shown).

The

spindles

107 and 108 extending between the horizontal rolls and pinoins are yieldingly supported by

bearings

113, 114 which form part of the cradles 115, 116 that "extend between the opposite sides of the roll housing 2 and pinion housing 111. The ends of the cradles adjoining the pinion housings are suspended by eye bolts 117 and springs 118 from lugs or brackets 119 on the separators which extend between and connect the mill housings to the pinion housings. The ends of the cradles adjoining the mill housings are arranged to move upwardly and downwardly-wth the vertically adjustable rolls 3 and 4. One' (the swinging) end of the cradle 115 is suspended by eye bolts 120 and links 121 from the cross-arm 93 forming part of the supporting mechanism for the cradles 91'on the necks 9 of the top roll 3 so as to move with the top roll. The swinging end of thecradle 116 for' the bottom roll 4 is connected by links 122'to one end of levers 123 which-are pivoted on a pin 124 and have a counterweight 125 at the other end so as to permit the swinging end of the cradle to move up and down when the bottom roll 4 is similarly moved by the housing screws.

In the operation of our improved mill the horizontal and

vertical rolls

3 and 4, 5 and 6 will be assembled in the roll housings as shown. The horizontal and vertical rolls will then be carefully adjusted by means of the

housing screws

14, 15 and quills 67 to bring the working faces of the rolls into the right relation to each other. The quills 67 and

housing screws

14, 15 will then be manipulated to form a pass between the rolls 3, 4, '5 and 6 of the size required for the first rolling or reducing pass. The material then is entered between the rolls and is elongated and partly shaped in transverse cross-section. The rolls are then reversed and. are adjusted to form the next pass and the material is again passed between the rolls and again reduced in cross-section and elongated.

These operations are then repeated as often as required to complete the rolling operation in the mill. The rolls are then spread to receive the next piece of material and the steps described above are repeated.

The advantages of our invention will be appreciated by those familiar with the art. The novel-means employed in assembling the vertical rolls in the chucks enables roller hearings to be employed with these rolls notwithstanding the very limited space available for operatively mounting the roll and its chuck in the housing windows.

Theimproved means employed in securing the chucks on the cross-heads enables the rolls to be removed and replaced in the housings without disturbing the cross-head operating mechanism.

The adjustable wedges on the chuck and lower surface of the recesses in the housings in which the chucks are movably mounted afford means for adjusting the chucks and vertical rolls sidewise within the recesses in which they are mounted and enable adjustments to easily and quickly be made in compensating for wear on the sliding surfaces of the chucks. By the novel means employed for operating the cross-heads a strong and durable adjusting mechanism is provided and the frequent adjustments necessary are easily, quickly and accurately made.

' Modifications in the construction. and arrangement of the apparatus forming this invention may be made without departing from the invention described and particularly.

pointed out in the appended claims.

We claim:

1. In a universal rolling mill, the combination with roll housings having relatively adjustable horizontal and vertical rolls rotatrolls within said windows, said means inclu'ding a roll chuck for the vertical rolls, an

adjustable cross-head alongside each roll housing to which the roll chuck is detachably secured, and means on the roll chuck for alining the chuck endwise within the housing window in alining the vertical roll into operative position relative to the horizontal rolls. I

2. In a universal rolling mill, the combination 'with roll housings having relatively adjustable horizontal and vertical rolls rotatably mounted in the housing windows, said horizontal and verticalrolls being in axial alinement in a vertical plane, ofhorizontally movable means for supporting the vertical rolls within said windows, said means including a roll chuck for each vertical-roll, an adjustable cross-head alongside each roll housing to which the roll chuck is detachably secured, and means on the roll chuck for taking up wear on the ends of the chuck to maintain the chuck and vertical roll in the housing window in operative position relative to the horizontal rolls.

3. In a universal mill, the combination with the roll housings and horizontal and vertical rolls adjustably secured in the windows of said housings and'chucks for said vertical rolls, cross-heads to which said chucks are secured of means. for actuating said chucks, said means comprising tension rods on said housings, threaded quills on said tension rods, nuts screwed on said threaded quills and secured against rotation'on said crossheads, and means for rotating said quills.

4. In a universal rolling mill having roll housings with horizontal and vertical rolls adjustably mounted in the windows of the housings, the combination with said vertical rolls and chucks in which said rolls are rotatably secured, of means for. adjusting said chucks to move the vertical rolls toward and away from the bodies of the horizontal rolls, said means comprising tension rods on the roll housings, screw threaded quills rotatably mounted on the tension rods and threaded through nuts on said cross-heads, means 'for rotating the quills to move the cross heads and compressible springs between the cross-heads and roll housings.

5. In a universal rolling mill having roll housings, horizontal and vertical rolls mounted in the windows of the housings with the axes thereof in the same vertical plane, means for driving said horizontal rolls and means for causing a relative approach of each roll toward the others, of chucks for the vertical rolls having a vertical pin and a roller bearing rotatable on the pin on which the ver tical rolls are mounted to freely rotate thereon, said chucks having integral top and bottom sides and ends, said sides having slots, said pin, roller bearing and roll being locked in the slotted sides of the chuck to prevent movement thereof relative to the chuck.

6. In a universal rolling mill having roll housings, horizontal and vertical rolls mounted in the windows of the housings with the axes thereof in the same vertical plane, means for driving said horizontal rolls and means for causing a relative approach of each roll toward the others, of chucks for the vertical rolls by which said rolls are adjusted toward and away from the ends of the horizontal rolls, said chucks having slotted integrally formed top and bottom sides, a pin having a rectangular head and split rectangular collar by which it is mounted in said slots, a roller bearing on said pin on which the vertical roll is rotatably, mounted and a cap to fasten the pin and collar in the slots of the chuck, said pin. bearing and roll being locked between the top and bottom sides of the chuck against vertical movement within said chuck.

7. In a universal rolling mill the combinationwith roll housings having horizontal and vertical rolls rotatably mounted in the housing windows, with the axes thereof in the same vertical plane and relatively movable in the same plane, of horizontally movable means for supporting the vertical rolls within the housing windows, said means including a roll chuck for each vertical roll, an adjustable cross-head alongside the housing to which the roll chuck is detachably secured and means on the roll chuck for moving the chuck endwise within the housing window to maintain the axes of the vertical rolls in the vertical plane of the axes of the horizontal rolls.

8. In a universal rolling mill the combination with roll housings and relatively adjustable horizontal and vertical rolls rotatably mounted in the housing windows, the axes of said horizontal and vertical rolls being in the same vertical plane of horizontally movable means for relatively adjusting the vertical rolls within said windows, said means including roll chucks for supporting the vertical rolls in the housing windows, an adjust able cross-head alongside the housing to which the roll chuck is detachably secured, and adjusting means on the ends of the roll chuck for moving the chuck endwise to m aintain the axes of the vertical rolls in the vertical plane of the horizontal rolls, said chuck moving'means being adjustably secured to said chuck.

9. In a universal rolling mill the combination with roll housings and relatively adjustable horizontal and vertical rolls rotatably mounted in the housing windows. of horizontally movable means for supporting the vertical rolls within said windows,.said means including a roll chuck for the vertical rolls, an adjustable cross-head alongside the housing and detachably connected to the roll chuck, and means for adjusting said chuck endwise relative to the side of the housing window in which the chuck is mounted.

10. In a universal rolling mill the combination with roll housings and relatively adj ustable horizontal and vertical rplls rotatably mounted in the housing windows, of horizontally movable means for su porting the vertical rolls within said win ows, said means including a roll chuck for the vertical rolls, an adjustable cross-head alongside the housing to which the roll chuck is detachably secured, and means for adjusting said chuck endwise relative to the sides of the housing windows to maintain the axes of the vertical rolls in alinement with the axes of the horizontal rolls in a single vertical plane, said means including wedges dovetailed to the ends of the chuck.

11. In a universal rolling mill the combination with roll housings and relatively ad justable horizontal and vertical rolls rotatably mounted in the housing windows, of horizontally movable means for supporting the vertical rolls within said windows, said means including a roll chuck for the vertical rolls, an adjustable cross-head alongside the housing to which the roll chuck is detach: ably secured, and means for adjusting said chuck endwise relative to the sides of the housing windows to take up wear and maintain the vertical rolls in alinement with the axes of the horizontal rolls in a vertical plane, said means including wedges dovetailed to the ends of the chuck, and means for fastening the dovetailed wedges in adjusted position orf the chuck ends.

12. In a universal rolling mill the combina tion with roll housings and relatively adjustable horizontal and vertical rolls rotatably mounted in the housing windows, of horizontally movable means for supporting the vertical rolls within said windows, said means including a roll chuck for each vertical roll, an adjustable cross-head alongside the housing and detachably connected to the roll chuck, means for adjusting said chuck endwise relative to the sides of the housing window in which the chuck is yieldingly mounted, a support on which the cross-head is slidably mounted, and means on said crosshead and movable therewith for adjusting the cross-head vertically on said support.

13. In a universal rolling mill the combination with roll housings having horizontal and vertical rolls rotatably mounted in the housing windows, with the axes thereof in the same vertical plane and relatively movable in the said plane, of horizontally movable means for supporting the vertical rolls within the housing windows, said means including a roll chuck for each vertical roll, an adjustable cross-head alongside the housing to which the roll chuck is yieldingly secured, and means for moving the chuck endwise withinthe housing windows to maintain the axes of the vertical rolls in a plane through the axes of the horizontal rolls.

In testimony whereof we have hereunto set our hands.

ANDREW W. SODERBERG. ALLAN G. DAHLGREN.