US1463036A - bryen - Google Patents

Description

2 Sheets-Sheet 1 G. J. BRYEN ROLLING MILL RAGGING MECHANISM Filed Dec. 25, 1920 July 24, 1923 July 24, 1923- 1;463;036

G. J. BRYEN ROLLING MILL RAGGING MECHANISM Filed Dec. 23, 1920 2 Sheets-Sheet 2 I =3 R i R a a e'a i 5 0 N I 1 8 Q) :Q I N g Q a a Q &,

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Patented July 24, 1923.

v UNITED STATES GEORGE J. BRYEN, OF DUQUESNE, PENNSYLVANIA.

ROLLING-MILL RAGGING MECHANISM.

Application filed December 23, 1920. Serial No. 432,674.

- To allwhom it may concern:

Be it known that I, GEORGE J. BRYEN, a citizen of the United States, and resident of Du'quesne, in the county of Allegheny and i I State of Pennsylvania, have invented certain new. and useful Improvements in Rollin -Mill Bagging Mechanisms, of which the fo lowing is a specification.

I invention relates to apparatus for I roughing the working faces of the reducing rollsof rolling mills.

, In the o ration of rolling mills, particularly two.- igh reversing mills of the type used in rollin blooms, billets and slabs and .1. similar semi-gushed products, the working faces of the rolls are roughened or ragged so that the rolls will bite? the metal being rolled and in that way drag the metal being reduced through the rolls.

U One way of raggingi or roughemngthese surfaces 18 ,to chip, y hand, a ser es of fooves around the periphery of the rolls, 55c grooves extending arallel with the axis of the roll. This is a s ow andlaborious operation, and, as the roughened surfaces are rapidly worn smooth, must be repeated at frequent intervals.

It will be obvious that the rolls cannot be ra god or roughened while metal is being rofied so that the delays in rolling, due to the time lost, in ragging the rolls, is a source of great expense in the operation of such mills. f

. In another way of toughening or ragging the rolls it is necessary to disconnect one roll of a two-hi h mill from thedriving pinion for that rol in order to simultaneously rag both rolls, and the time lost in uncoupl ng and again coupling the roll and its driving pinions, is the cause of long delays and large ex ense in the operation of, the mill.

neobject of the invention is the prov1 sion of novel means whereby the rolls are roughened or rag ed. mechanically instead of by chipping by and.

Another ,ObJBCt of the invention is to pro vide a roll ragging mechanism having novel means whereby the opposite, oppositely rotated workingfaces of a pair of rollsmay be simultaneously roughened or ragged.

,Another object of my invention is to rovicle av roll ragging apparatus adapte to roughen or re the opposite faces of a P3111 of reducing r0 ls in a. rolling mill, without 55 disconnectin .therolls from the pinions or 2. gears {by ,w ich the rolls are positively driven in the operation of the rolling mill, and also in the roll ragging operations.

A further object of this invention is to provide a roll ragging mechanism having novel means whereby the mecanism is ma. nipulated in the roll ragging operations. A. still further object of. my invention is the provision of a roll ragging mechanism having the novel constructions, arrangement and combination of parts shown by the drawings, described in detail hereinafter, and particularly pointed out in the appended claims.

With these and other objects in view, one formof apparatus embodying my invention will be described in the following specification and illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of a two-high reversing mill and driving mechanism therefor, showing a roll ragging mechanism applied thereto.

Figure 2 is a side elevation of roll ragging mechanism constructed in accordance with my invention, in operative position between a pair of rolls.

Figure 3 is a top plan of the apparatus of Figure 2. a

Referring now to the drawings, the numerals 2 and 3 designate the upper and lower rolls respectively of a two-high reversing mill, which are journaled in suitable bearings mounted in the usual manner in the windows of the roll housin s 4 and 5. The usual pinion housings 6 and positioned at one side of the housing 5 have the spur pinions or gears 8 and 9 supported therein. Thenecks or journals l0 and 11, 12 and 13, respectively, of the pinions 8 and 9 are mounted in bearings in the windows of the housings 6 and.7, these housings being enclosed to provide a casing to exclude .dust and dirt and hold a supply of lubricant for the pinions 8 and 9, after a well known and approved manner.

The necks 10 and 12 of the gears 8 and 9 are flexibly connected respectively to, the neck of the upper roll 2 and the lower roll 3 of the mill by spindles 15 and 16 of an approved design. a I

The neck 13 of the lower gear 9 is flexibly connected to a drive shaft 17 by coupling 18, from which power is received for-driving the rolls 2 and 3. a U

My improved ragging apparatus when op: eratively mounted between the rolls 2 and 3 is arranged to simultaneously rag both rolls while they are being positively driven in opposite directions.

The numeral 20, designates 'the substantially rectangular frame of my ragging device which has an upper pair of ragging rolls or disks 21 and 22, and a lower pair of ragging rolls or disks 23' and 24 loosely journaled on suitable pins or axles mounted in said frame. Each of the rolls or disks 21, 22 andiZi-B, 24 has a serrated or toothed circumferential face, and is free to rotate independent of the other. These rolls or disks will be made of high grade tool steel and when not made of self-hardening steel will be hardened and tempered.

The rear end of the frame 20 is provided with ascrew threadedsocket 26 in which is threaded a long handle or arm 27 by which the apparatus is operatively suspended from an overhead support and is manipulated, in positioning and removing the 7 device. The handle or arm 27 is provided intermediate its ends with an apertured lug 28 adapted to be connected to an overhead traveling crane or other supporting devlce,

, b so as to form a flexible support for the apparatus. The handle 27 is bent at a point beyond the lug 2-8 as at 29 and is provided with 'a'counterweight 80 to counterbalance the weight of the ragging disks or rollsand frame 20. The rear end of the handle or arm 27 is provided with a head 81 having cross bars or handles 32 and 33 therein.

I The front end of the frame; 20 is also provided with a screw threaded socket 34 so that the handle 27 may be fastened thereto when found desirable or necessary.

The operation of the apparatus will be readily understood by those. skilled in the art. In using the apparatus the roll 2 will be adjusted by the usual screw adjusting mechanism so that there will be sufficient space between the rolls for my device to pass between the rolls 2 and 3. The ragging mechanism will then be positioned between the rolls and the roll 2 of the mill will be moved downwardly by the roll adjusting mechanism until the one of the pairs of disks(2l, 22) is in engagement with the roll :2 and the other pair (23, 24:) is in engagement with the roll 3. l/Vith the apparatus thus positioned the rolls are slowly rotated and the teeth of the now rotating disks will cut into the contacting surfaces of the rotating rolls and quickly form a series of grooves therein.

It'will be readily seen that my improved apparatus is a marked improvement in the art, and therefore, I do not wish to be'limitedto theex'act construction, shown and described since various changes in minor details of construction may be made without departing from the spirit of my invention, as defined in the appended claims.

gage with and ro'ugh'en the working face of at least one roll of said rolling mill while positioned between two rolls thereof.

3. A rolling mill ragging mechanism comprising a frame, a plurality of independently rotatable disks mounted in said frame, at

least part of said disks having a serrated periphery, and said serrated periphery be ing adapted to engage With and roughen the working face of one roll ofsaid rolling mill while" thereof.

4; A rolling mill ragging mechanism com prising a frame, a plurality of independ positioned between two rolls ently rotatable disks mounted in said frame,

at least part of said disks; having a serrated periphery, and said serrated periphery be in'g adapted to engage with and roughen the working face of one roll of saild' rolli ng mill while positioned between two Iolls thereof, a handle on said frame for position= ing the ragging mechanism between said rolls and means on saidh'andle for sus pending said ragging mechanism in operative position between the said rolls.

5'. A rolling. mill ragging mechanism com- 1 prising a frame, a plurality of disks rotatably mounted in said frame, at-least part of said disks having serrated peripheries adapted to engage with and roughen the working face, of at least one roll of'the rolling mill while positioned between, two rolls of said mill, a handle connected by one end to said frame, a counterweight ad justably secured thereon at the other end of said handle and means between the ends of said handle whereby said ragging mechanism is mounted on a support therefor.

' 6. A rolling mill ragging' mechanism com-' prising a frame, a pluralityfof disks rotatably mounted in saidqframe, at least part of said disks having serrated peripheries adapted to engage with and roughen the working face of at least one roll off the rolling mill while positioned between two rolls of said mill, a handle connected byon'end i to said frame, a counterweight adjustably secured thereon at the other end of said handle and. means. between the ends of said handle whereby'said ragging mechanism is pivotally connected to a support therefor.

7. In the ragging or rolling mill rolls, the

III

steps consisting of inserting a raggiing mechanism between two opposed, axially parallel rolls, relatively adjusting said rolls to thereby bring the ragging disks of said ragging mechanism into operative engagement with opposed surfaces of saidrolls and then positivelyrotating said rolls to thereby rag the surfaces thereof in engagement with said ragging mechanism. a

8. In the ragging of rolling mill rolls, the steps consisting of inserting a ragging mechanism between two opposed axially parallel rolls, relatively, adjusting said rolls to thereby bring the Tagging disks of said ragging mechanism into operative engagement with the opposed surfaces of said rolls and then positively and simultaneously rotating said rolls to thereby rag the surfaces thereof in engagement with said ragging mechanism.

In testimony whereof I have hereunto 20 signed my name.

GEORGE J. BRYEN.

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