US1898007A

US1898007A - Working roll balance for a backed-up rolling mill

Info

Publication number: US1898007A
Application number: US570173A
Authority: US
Inventors: Hubert E Ewart
Original assignee: United Engineering and Foundry Co
Current assignee: United Engineering and Foundry Co
Priority date: 1931-10-21
Filing date: 1931-10-21
Publication date: 1933-02-21
Anticipated expiration: 1950-02-21

Description

H. E. EWART Feb. 2l, 1933.

WORKING ROLL BALANCE FOR A BACKED-UP ROLLING MILL Filed Oct. 2l, 1931 INVENTOR l l I 1 I I l WH'NESSES Patented Feb. 21, 1933 UNITED STATES PATENT OFFICE HUBERT E. EWART, 0F MOUNT LEBANON, PENNSYLVANIA, ASSIGNOB TO UNITED ENGINEERING & FOUNDBY PORATION 0F PENNSYLVANIA COMPANY, OF PITTSBURGH, PENNSYLVANIA, A COB- Application led October 21, 1931. Serial No. 570,178.

This invention relates to backedmp rolling mills, and more particularly to working roll balances therefor.

In a backed-up rolling mill the metal passing between the working rolls forces them against the backing rolls so that the latter are driven by the frictional contact established therebetween. However, when the mill is operating with no material being rolled, there is nothing to force the working rolls, particularly the upper one, tightly against the backing rolls, sults in there not being suiiicient contact between them to enable the former to drive the latter. Consequently, the backing rolls remain substantially motionless while the driven rotating working rolls grind against them and wear down their faces. This ac tion is characteristic of three-high, fourhi h, cluster and other backed-up mills.

t is among the objects of this invention to provide an improved working roll balance, associated with a casing in which a backing roll is journalled, for constantly urging a working roll into driving contact with the backing roll, which balance can be adjusted to vary the pressure of the rolls against each other, and is adapted to facilitate removal of the working roll from the mill housing.

The invention is illustrated in the accompanying drawing of which Fig. 1 is a fragmentary view, partly in cross section, of one end of a rolling mill showing a working roll balance; and Fig. 2 is a sectional view taken on line II-II of Fig. 1.

ReferringV to the drawing, a rolling mill housing 1 is rovided at its end with a window 2 in which a casing 3, having an open- ,ing 4 in its lower portion, is slidably mounted for vertical ad]iistment by screw downs, not shown. A neck of a backing roll 5 is journalled in the casing, while a chock 6 with a working roll 7 journalled therein, is slidably mounted for vertical movements in opening 4 of the casing. The working roll is thus backed-up by backing roll 5 directly above it.

To constantly urne the working roll into driving contact with the backing roll when which often re-V no material is being rolled, so that the former will not sli against the latter and thereby grind their faces, there is provided a working roll balance com rising a. cylindrical hollow sleeve 8 slidab y disposed in a chamber 9 extending upwardly into casing 3 adjacent the side of chock 6. A stud 10, screwed at its upper end in the casing, projects downwardly through the center of sleeve 8 which is provided with an inwardly-extending annular shoulder 11. Abutting against the bottom of this shoulder is the upper end of a coil spring 12 held in position by means of a nut 13 threaded on the lower end of stud 10. Washers 14 and 15 are inserted between the spring and shoulder, and between the spring and nut, respectively, to form end bearings for the spring.

The lower end of sleeve 8 is integrally provided with a lug 16 projecting horizontally therefrom and adapted to engage the lower face of chock 6 and support it. `By turning nut 13 up on stud 10, spring 12 i'S compressed. which tends to force sleeve 8 upwardly in chamber 9. As the lug supports the chock, this upward movement is transmitted to the chock and the working roll journalled therein, the working roll being thereby urged upwardly into driving contact with the backing roll. To insure proper engagement of 1u 16 with chock 6, the latter is provided with a rabbet 17 in its lower face into which the lug projects. The proper pressure between the rolls is obtained by turning nut 13 either to the right or left to compress or expand the spring. As shown, each side of each working roll may be provided with a balance constructed as explained, and it will be understood that the balances are provided at both lends of working rolls.

W'hen it is desired to remove the work- Working roll can then be pulled laterally through casings 3 Without interference by the balances. There is thus provided an adjustable Working roll balance of simple construction and few parts which can easily be disengaged from a Working roll to permit its removal from the mill housing.

Accordingr to the provisions of the atent statutes, I have explained the principle and operation of my invention, and have illustrated and described what I now consider to be its best embodiment. However, I desire to have it understood that Within the scope of the appended claims, the invention may be practiced otherwise than as specifically illustrated and described.

I claim:

1. In a rolling mill, the combination with a housing provided with a vertically movable casing having a backing roll journalled therein, of a chock slidably mounted in said casing, a Working roll joui-nailed in said chock, and a member yieldingly connected to said casing and While thus connected movable to and completely from a position engaging said chock for urging said Working roll yieldingly into driving contact with said backing roll.

2. In a rolling mill, the combination with a housing provided with a vertically movable casing having a backing roll journalled therein, of a chock slidably mounted in said casing, a working roll journalled in said chock, a member rotatably mounted in said casing for movements to and from engagement with said chock, and means for yieldingly urging said member toward said Working roll.

In a rolling mill, the combination with a. housing provided with a vertically movable casing having' a backing roll journalled therein, of a chock slidably mounted in said casing, a working roll journalled in said chock, a sleeve mounted for angular and vertical movements in said casing and provided With a lug Which in one angular position of the sleeve engages said chock, and means for yieldingly connecting said sleeve to said casing for urging the Working roll into driving contact with the backing roll.

In testimony whereof, I sign my name.

HUBERT E. EWART.

DISCLAI M E R 1,898,007.-Hubert E. Ewm't, Mount Lebanon, Pa.

A BAcKnn-UP ROLLING MILL. Patent dated February 21, 1933.

claimer iled March 6, 1934, by the assignee, United Engineering cf: Foundry Company. Hereby enters this disclaimer to which is in the follown words, to, Wit:

1. In a rolling 'm' l, the combination with m said casing, a Working roll journalled in said chock, and

nected to said casing and While thus connected movable contact with said backing roll.

[Qcvlal Gazette March 2?', 1.934.]

WORKING RoLL BALANCE Fon that part of the claims in said specication 0 housing provided with a vertically movable casing having a backing roll journalled therein, of a chock slidabl mounted a member yiel ingly conto and completely from a position engaging said chock for urgmg said working roll yieldingly into driving Working roll can then be pulled laterally through casings 3 Without interference by the balances. There is thus provided an adjustable Working roll balance of simple construction and few parts which can easily be disengaged from a Working roll to permit its removal from the mill housing.