US1905129A - Rolling mill - Google Patents

Description

A ril 25, 1933. F. c. BIGGERT, JR., ET AL 1,905,129

ROLLING MILL 5 Sheets-Sheet 1 Filed July 6. 1928 INVENTOR 1 Lnu flwwm April 1933- F. c. BIGGERT, JR., arm. 1,905,129

ROLLING MILL Filed July 6. 1928 5 Sheets-Sheet 2 [NVENTOR F. c. BIGGERT, JR., ET AL 29 ROLLING MILL Filed July 6. 1928 5 Sheets-Sheet 4 April 25, 1933.

April 25, 1933. F. c. BIGGERT, JR., ET AL 1,905,129

ROLLING MILL Filed July 6. 1928 5 Sheets-Sheet 5 Law A Au FLORENCE C. BIGGERT, I VANIA, ASSIGNOBS TO UNITED ENGINEERING &

Patented Apr. 25, 1933 UNITED STATES PATENT OFFICE JR, GRAFTON, AND LANE JOHNSON, O1 INGRAM, PENNSYL- rou'mm'z couranx, nor rrr'rs mu"11" 1," rmmsnvam A conrona'rron or rmnsnvmx Romaine m Application filed July 8,

This invention relates to rolling mills, and is herein illustrated in its applicability to a rolling mill comprising a pair of housings housings without neck reductions at their,

ends, the arrangement afi'ording full strength of the rolls and permitting rapid changes of them.

According to this invention we provide side bearings for rolls to prevent their horizontal displacement, such bearings preferably being of the anti-friction type. lle the side bearings may be arranged in vanous ways, they are preferably pivoted on supports attached to axes or journals whlch carry the backing rings or other backing means for the working rolls. Provision is made in the housings for backing up the side bearings to space and maintain them in proper position. v

In the accompanying drawings illustrating the present preferred embodiment of our invention and certain modifications thereof,

Figure 1 is an end elevation of a rolling mill having our invention applied thereto,

Figure 2 is a vertical section taken on the line IIII of Figure 1, such section being partly broken away and showing the rolls in solid lines,

Figure 3 is an end elevation to enlarged scale. partly broken away and showing the side bearings in more detail,

Figure 4 is a detail view of the end por tion of one of the working rolls. partly broken away and showing the end thrust bearing for the working roll,

Figure 5 is a view corresponding generally to Figure 3 but showing a modified construction,

Figure 6 is a horizontal section taken on the line VI VI of Figure 5,

Figure 7 is a view corresponding generally to Figure 5 but showing anti-friction side bearings instead of plain bearings, and

Figure 8 is a view corresponding to Figure 7 but showing a still further modification.

1928 Serial no. 290,802.

The mill shown in Figures 1 to 4 inclusive, comprises housings 2 connected by a unitary cap 3 and supported on shoes 4. Each housing 2 has a window 5. Each window carries top and bottom cases 6 and 7 for anti-friction backing rolls or rings 8. Each ring 8 runs on a roller bearing 9 carried bya pin 10. The bottom cases 6 are supported on convex buttons 11, and the upper cases 7 are carried by screws 12. The bottoms of the screws are convexed so as to make a ball and socket joint with the cases. Collars 13 are provided sothat as the screws are raised the cases 7 will be raised correspondingly.

The cases 6 and 7 fit in the window 5 so that sidewise movement, as the mill is viewed in Figure 1, is prevented; but endwise movement, as the mill is viewed in-Figure 2, is permitted within a limited range. Plates 14 are secured to the housings alongside the window so as to limit such movement. v

The rings 8 rovide anti-friction backing for working ro ls 15 extending through the housings and between the windows. The working rolls are not reduced in diameter at the end portions where they are engaged by the rings 8. ,On the contrary the rings bear on the roll bodies.

The construction employed permits the anti-friction backing rolls for the working rolls to adapt themselves to any flexing of the working rolls under load so that the full efliciency of the anti-friction bearings is always obtained.

Sidewise movement of the working rolls is prevented by side bearings carried by the cases 6 and 7. These are shown in detailin Figures 1 and 3. Each working roll is provided at each end with a pair of side bearings indicated generally by the reference characters 16 and 17. Each side bearing 16 comprises a bracket 18 pivotally mounted on a pin 19 carried by the case 6 or 7 depending on whether the side bearing is for the top or bottomworking roll. Each bracket 18 carries a roller bearing 20 engaging the side of the working roll 15. The bracket is fur ther provided with a shoe'21 engaging the inner face of the window 5. is arran ement insures that the roller bearing 20 which constitutes one side bearing member for the working roll will always be properly positioned, will adjust itself automatically with the movements of the case 6 or 7 upon which it is supported, and in the case of the upper roll, will be raised or lowered as the screws 12 are operated.

The side bearing 17 is similar to the side bearing 16 in many respects and similar parts have been given the same reference character with an a suifixed thereto. It differs from the bearing 16 in that it is adjustable toward or away from the axis of the Working roll. It is backed up by a pin 22 extending through an opening 23 in the housing. The pin 22 is'threaded through a block 24 carried in a T slot 25 in the outer face of the housing and is provided with a squared head 26 by which it may be rotated so as to move the roller bearing 20a toward or away from the working roll, thus providing the desired nicety of adjustment.

The pin 22 bears against a face 27 on the bracket 18a of suflicient size to make certain that pressure from the pin 22 will be communicated through the bracket 18a to the roller bearing 20a within the range of vertical adjustment of the upper roll.

One block 24 sulfices for the pins 22 for both the upper and lower side bearings. The two pins carry washers 28 which lie over the T slot 25 and are engaged by lock nuts 29.

The side bearings 17, like the side bearings 16, are free to move with the cases on which they are mounted, the ends of the pins 22 bearing against smooth faces on the brackets 18a.

The spacing of the working rolls is obtained by wood plugs 30 carried by sleeves 31, which are in turn mounted on rods 32 projecting through the housing, and are threaded through the blocks 24. Lock nuts 33 are provided and the heads of the rods 32 are s uared as indicated at 34 so as to permit 0 the proper adjustment of the plugs 30 being made.

The working rolls 15 are provided with the usual Wobbler connection 36 for driving. Endwise movement of the working rolls is 50 prevented by thrust bearings shown in Figures 1, 2 and 4. Each working roll has a reduced end portion 37 on which are mounted thrust rings 38 held in spaced relation by a bearing sleeve 39. A cap 40 fits over the 55 end of the reduced portion 37 and is held in place by a nut 41 on a stud 42 which is screwed. to the end of the roll.

The thrust rings 38 and the bearing sleeve 39 engage a cross arm 43 extending across the G0 window 5 and held in place by studs 44. The arm 43is bored to fit over the bearing sleeve 39 and when the parts are assembled, endwise movement of the working roll is prevented. The openings through which the 65 studs 44 extend are sufliciently large to permit of vertical adjustment of the rolls within the desired range.

Figure 5 shows a modified construction wherein parts corresponding to similar parts in Figures 1 to'4 have been given the same reference character with a b suflixed thereto. In this form of the invention the work ing rolls 155, instead of havin side bearings supported from the casings 6% and 76, have side hearings in the form of blocks having renewable bearing faces 51 thereon and supported by backing screws 52. The backing screws have dog points 53 engaging recesses in the blocks 50 and are threaded through nuts lying in recesses in the housing and 11- lustrated in dotted lines. The blocks 50 for the bottom roll are supported on spreader blocks 55 lying on the case 66, and the space between the blocks 50 for the top and bottom rolls is filled with the roll spreader plug 30b. This plug is provided with a metal backing block 56 which in turn is backed by a rod 57 extending through the housing and threaded so as to permit of adjustment.

In this form of the invention the end thrust is prevented by an end thrust hearing 58 fitting in slots 59 on brackets 60 secured to the housing.

The modification illustrated in Figure 7 is similar to that of Figures 5 and 6 except that instead of plain brasses 51 roller bearlngs 61 are provided. In this form of the invention top blocks 62 are provided so as to insure that all of the s de hearings will be held in proper vertical relation to the working rolls and will not be displaced vertically when under load.

Figure 8 shows a structure similar to Figure 7 except that each bearing block 500 is provided with two roller bearings 63. With this arrangement the tendency of the blocks .to move up or down under load is elim nated.

Our invention provides a simple and elfective side bearing for the rolls of a rolling mill wherein all parts may be readily adjusted or renewed when necessary. The entire mechanism is simple and does not interfere with removal and replacement of the rolls. If the rolls were mater ally reduced in diameter at the ends the problem of roll removal would be complicated considerably by the presence of the side bearings, but with our structure roll changes may be very readily made. We have described and illustrated a preferred embodiment of the invention, but it will be understood that it is not limited to the form shown, as it may be otherwise embodied within the scope of the following claims.

We claim 1. A rolling mill comprising a working roll, a backing roll, a support for the backing roll, and side thrust bearing rollers for the working roll mounted on the backing roll support.

2. A rolling mill comprising a working roll, a backing roll, the backing roll being adjustable, and side thrust bearing rollers for the workin roll so mounted as to be adjustable with the backing roll.

3. A rolling mill comprising a working roll, a bearing member therefor, the bearin member being so mounted as to adjust itsel to flexure of the working roll, and a side Ehrust member mounted on the bearing mem- 4. A rolling mill comprising a housing, a working roll, a bearing member therefor, the bearing member being carried by the housing in such manner that it mag adjust itself to the working roll, a side t rust member mounted on the bearing member, and a backing tor the side thrust member carried by the housing and arranged to permit of the side thrust member moving with the bearing member.

5. A rolling mill comprising a housing, a plurality of working rolls disposed in the housing, cases slidingly mounted in the housing, backing rolls for the working rolls journalled in the cases, brackets pivoted on the cases. and side rolls journalled in the brackets and disposed in engagement with the sides of the end portions of the working rolls for laterally supporting them.

6. A rolling mill comprising a housing, a

plurality of working rolls disposed in the housing. cases slidingly mounted in the housing, backing rolls for the working rolls journalled in the cases, brackets ivoted on the cases, side rolls journalled in t e brackets and disposed in engagement w th the sides of the end ortions of the working rolls, and adjustable means in the housing in engagement with the brackets for adjustlng the position of the side rolls to laterally support the working rolls.

7. A rolling mill comprising a working roll, a bearing member therefor, the bearing member being pivotally mounted so as to adjust itself to fiexure of the working roll and a side thrust member mounted on the earin member.

n testimony whereof we have hereunto set our hands.

FLORENCE C. BIGGERT, JR. LANE JOHNSON.

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