US1767392A - Eccentric rolls for rolling mills and the like - Google Patents

Description

June 24, 1930 E! PINCHEs 1,767,392

ECCENTRIC ROLL FOR ROLLING MILLS AND THE LIKE Filed Jan 26, 1928. '2. Sheets- Sheet 1 .Fig.1. I

5? I as 5' 6 Ts i 11 16 21 3g ;E 4' r2710 12 "j; ;q %4 m (9 20 l 2.\ 31 i Y @8 13 %5 4 June 24, 1930. A. E PINCHES ECCENTRIC ROLL FOR ROLLING MILLS AND THE LIKE 2 Shee at s-Sheet 2 Filed Jan. 26, 1928 Patented June 24, 1930 shrew ARTHUR- EDWARD rrivcnns, or snnrrmnn, ENGLAND, ASSIGNOR or ONE-HALF 'ro THE 'rrnsLnY ROLLING MILLS cons- AN? Lrnrrnn, or srrnrrrnn, ENGLAND;

ECOENTRIC ROLLS FOR- ROLLING MILLS AND THE LIKE Application filedJ'anuary 26,1928, serial No. 249,729, and' in Gan Britain January 26, 1927.

This invention relates to eccentric rolls of the type in which metal is rolled between two eccentric or shaped rolls or between one eccentricor shaped and one cylindrical roll, its

, object being to provide means. for feeding the work to the rolls at therequisite period; a

The rolls are driven continuously and the gate or gap between them into which the work is fed is constantly varying in size, either in creasing or decreasing. Hitherto it has been customary to rely upon the skill of the operator to feed the Work at the correct point in the revolution of the rolls, for which purpose a chalkmark or other distinguishing mark is usuallyplacedon the rolls and the Work is fed when the mark attains a specified position. The result is that considerable material is wasted owing to the inability of the operator to cause the work to enter the gate.

or gap between the'rolls exactly at the required moment.

According to the present invention, however, a feed apparatus is 1 provided and is driven synchronouslywith the rolls through a clutch or like device which is operative to beginto drive the feed apparatus at only one definite point in a revolution of the rolls,

and this point, which may be adjustable, is predetermined so that the feed apparatus moves the work into the gate or gap between the rolls at preciselyv the desired moment when the rolls are in the proper relative position to receive the work. By such means the waste due to errors in skill and in judgment are obviated and as it is possible greatly to increase the speed of the rolls a very much greater output is obtained from the mill. r

In a convenient construction a roller ca- 40 pable ofmoving work supported thereon and hereinafter referred to as a feed roller is mount-ed'on an axis parallel with those of the rolls and is normally stationary. It may be fitted with guide collars to grip the work, and 5 a clutch member co-axialwith, and rotatable in relation to, the feed roller is driven at the same speed as the rolls, conveniently by a chain drive from one of them; A second clutch member is mounted to rotate with the feed roller and a single dog or projection is provided oneach clutch memberin such manner that the dogs may either be moved into or out oi 'an engaging position.

In order to define the position of work to be fed to the-rolls a stop, which may beadjustable,is fitted so that it may be brought between the feed roller and the rolls and be Withdrawn from that position. Means are provided for turning the feed roller by hand and for indicating when it is at a given position, V In operation thefeed roller is turned into a predetermined position marked by the indicatingv device, the work is broughtto rest on the feed roller with its end against the stop, thestop is removed and thegdogs on the clutch members are moved to, the engaging position; NVhen the dogs engage one another, the feed roller will rotate and carry the'work into the gate between the rolls which will then be at the definitedesired point of a revolution, determined by the adjusted position of the feed roller, to ensure the work be ingcorrectly fed. l I r In the accompanying drawing Figure 1 isanelevation, Figure 2 an end view-and V; W o I,

FigureB a plan of rolling mill rolls fitted with feed apparatus according to the present invention; e Likereference numerals indicate like parts throughout the drawing. s

The rolls illustrated comprise a lower cylindrical roll 4 and anrupper roll 5 which is eccentric to its axis of rotation or,'as illusa rated, is specially shaped forthe rollingoi a particular form in which the shape of cross section is not uniform throughout the length of the bar such as aknee-bar or brake lever bar used in the construction of railway wagone. The rolls 4 and 5 are suitably mounted and driven in housings 6 and itwill be appreciated that the gate or gap between them varies in size as the rolls revolve. V l

It is therefore necessary for the work to e befed at a definite point in a revolution of the rolls 4 and 5 and in carrying outthe present invention a feed roller 7 is mounted be tween bearings; 8 and 9 with its axis-ad acent to, and parallel with, those of the rolls 4 and lee 5 and with its upper surface at about the level of the gate or gap between the rolls 4 and 5. The spindle 10 of the feed roller 7 is extended beyond one of the bearings 9 and is preferably supported in another bearing 11.

A clutch member 12 is rotatably mounted on the spindle 10 of the feed roller 7 between the bearings 9 and 11 and is continuously driven from one of the rolls 4 and 5 at the same speed as the rolls and in the same sense as the lower one 4. In the example illustrated the clutch -member12 is fitted with a toothed wheel 13 meshing with another toothed wheel 14 of the same size,the toothed wheel 14 being driven by a chain 15 from the spindle of the upper shaped roll 5. The sprockets of the chain 15 being of the same diameter the clutch member 12 will be driven at the same speed as the rolls 4 and 5 and in the correct sense. The bearings of the toothed wheel 14 may conveniently be provided by extensions of the bearings 9 and 1'1 of the feed roller.

A second clutch member '16 is keyed or similarly mounted on the spindle '10 so as to slide thereon, and is caused thus to slide by means of an operating lever 17 fulcrumed at 18 and having an engagement with a groove 19 cut in the circumference of the clutch member 16. 3

The two clutch members 12 and 16 have each only a single engaging dogor projection 20 and 21 respectively. Normally the feed roller 7 is stationary, the clutch member 16 being in a position, illustrated in the drawing, in which its engaging dog 21 is free of the dog 20 of the clutch member 12. As there is only a single engagingdog-on each clutchmember it will "be understood that when the sliding one 16 is moved to'the operative position there is only one point in the path of the revolving dog 20 at which the sliding one 21 is engaged, and this'point, which may be adjusted by turning the feed roller by hand, corresponds to a definite point in the revolution of'the shaped rolls 4 and 5 since the latter rotate at the same speed as the clutch member 12.

Any desired means may beprovided for turning the feed roller by hand to adjust the point at which the dogs 20 and 21 engage. In the construction illustrated a circular ratchet 22 is'keyed to or formed on the feed 1 roller 7 and is engaged by a detent 23 operated by a hand lever 24 fulcrumed by a strap 25 embracing the feed roller 7.

The feed roller 7 is fitted with guide collars 26 opposite the operative portions of the rolls 4 and 5. These guide collars are intended to grip the edges of work placed between them, for which purpose their adjacent faces may be inclined and roughened as indicated in the drawing. The guide collars 26 are preferably adjustable on the feed roller 7 to suit the size of work to be fed to the rolls and to be opposite the desired gate or gap between the rolls 4 and 5 when the latter are formed with more than one operative surface. For this purpose the collars 26 may be divided and clamped on to the feed roller 7 as indicated in Figure 3.

A movable stop 27, which may be adjustable, is fitted so that it may be brought between the feed roller 7 and the rolls 4 and 5, and be withdrawn "from that position. In the construction 'illustratedthestop' 27 is "carried by rollers 28 running on rails 29 fitted between the housings 6 and a handle 30 is provided for moving the stop 27 along the rails 29.

Means areprovided "for indicating when the feed roller 7 is at'agi-ven position. For this purpose a scale 31 may be marked on thefeed-roller adj acen't to the bearing Sand a pointer 32 be carriedby the bearing to coact with the scale'31.

In operation the feed roller 7 is turned into a pre-determined posit-ion, indicated by the pointer 32 and scale 31 by reciprocating the lever 24, the work is caused to be gripped by the guide collars 26 with one end against the stop 27 which is brought opposite the gate or gap between'the'operati ve portions of the rolls 4 and 5. 'lVhen the work isthus adj usted thestop27 isremoved and the sliding clutch member 16 moved to theengaging po sition by means ofthe lever 17. When the dog 20 engages the dog--21 the feed roller 7 will rotate and carry the work into the gapbetween the rolls 4 and'5, which will then be at a definite point of a revolution determined by the adjusted position of the feed "roller 7. The correct position for the feed roller"? may be ascertained by dis-connecting the power from the rolls 4 and 5-and'reversing the feed operation, the rolls'being turned'in the reverse direction and allowance being made forthe thickness-orextent of the- dogs 20 and 21.

What I- claim is 1. Ina-rolling mill, shap'ed'rolls, feed apparatus and means for driving said feedapparatus synchronously with the rolls, said means including a clutch device which is adapted tobe placed in-operationat onlyone definite point in a revolutionof said rolls-for the purpose specified. I

2. In a rolling mill, the combination with shaped rolls, of feed apparatus, means for driving said feed apparatus synchronously with the rolls, said means'in'cluding a clutch device which is adapted to bepl'aced-in operation at only one definite point in a revolution of said rolls, and m'eans "for adj'usting the point at which'the clutch-device becomes operative'for the purposesp'ecified.

3. In a rolling mill, theCombination with shaped rolls,"of feed apparatus comprisingfa feed roller mounted on 'an'aXi's "parallel with those ofithe rolls,a clutch member' c'o-axial "its with and rotatable in relation to the feed roller at said same speed as the rolls, a second clutch member rotating with the feed roller, a single dog projection on each clutch member and means for moving the dogs into and out 2f 3n engaging position substantially as speci- 4. In a rolling mill, the combination with shaped rolls, of feed apparatus comprising a feed roller fitted with gripping guide collars and mounted on an axis parallel with those of the rolls, a clutch member co-axial with and rotatable in relation to the feed roller at the same speed as said rolls, a second clutch member rotating with the feed roller, a single dog projection on each clutch member and means for moving the dogs into and out of 5. In feed apparatus for a rolling mill, the

V combination with shaped rolls, of a feed roll- 7 er, means for driving said feed rollersynchronously with the rolls, said means includ:

ing a clutch device which is adapted to be placed in operation at only one definite point in a revolution of said rolls, a stop defining the position of work to be fed to the rolls and means for bringing the stop between the feed roller and the rolls and for withdrawing it.

6. In feed apparatus for a rolling mill, the combination with shaped rolls, of a feed roller, means for driving said feedroller syn chronously with the rolls, said means including a clutch device which is adapted to be placedin operation at only onedefinite point in a revolution of said rolls, and means for turning the feed roller by hand and for indicating when it is at a given position.

7. In a rolling mill, the combination with shaped rolls, of feed apparatus comprising a feed roller fitted with gripping guide collars and mountedon an axis parallel with those of said rolls, a clutch member co-axial with and rotatable in relation to the feed roller at the same speed as the rolls, a second clutch member rotating with'the feed roller, a single dog projection on each clutch member, means for moving the dogs into and out of an engaging position, a stop defining the position of work to be fed to the rolls, means for bringing the stop between the feed roller and the rolls, and for withdrawing it, and means for turning the feed roller by hand and for indicating when it is at a given position, substantially as specified.

In testimony whereof I hereunto aflix my signature.

ARTHUR EDWARD PINCHES.

an engaging position, substantially as specifi d

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