US2175783A - Metal-rolling mill - Google Patents

Description

Oct. 10, 1939. G. H. ROSE METAL-ROLLING MILL Filed Oct. 1'7, 1936 5 Sheets-Sheet 3 Oct. 10, 1939. Q H, R055 y 2,175,783'

METAL-ROLLING MILL 4 Filed Oct. 1'7, y1936 5 Sheets-Sheet 5 n` a N Q tu s h S f lq. N l@ E Q [7u/eidan- 1, C750/66E A. E055, l Ww M Patented Oct. 10, 1939 UNITED STATES PATENT OFFICE 2,175,783 METAIenoLImG MILL George H. Rose, Cleveland Heights, Ohio Application october 17, 193s, sex-1,1 No. 106,235

1ol claims.

spect to each other; consequently the sectionV being rolled varies in its dimensions.

In addition to the foregoing difliculties, further variations in the dimensions of the section being rolled are caused by horizontal clearance l between the chocks and rolls. This clearance is e necessary to permit the installation and removal of the. chocks from the housing, but permits the movement of the chocks especially when the section being rolled enters or leaves the rolls.

It is Aamong the objects of the present invention to provide a. novel adjusting device for the rolls of a rolling mill which will enable their ex- .act registration under all conditions. y The foregoing and other objects .will be apparent after referring to the drawings, in which:

Figure l is a sectional plan of a rolling mill 30 employing the device of the present invention.'

Figure 2 is a viewon the line ll-lI of Fig-- ure 1. l .A

Figure 3 is an end elevation. Figure 4 is a sectional plan similar to Figure 1 but disclosing a modiilcation. f

Figure 5 is a perspective view of a modiiied form of the invention.

Referring more particularly to the drawings, the numeral 2 designates a rolling mill housing 4o having the usual windows 3. A pair of chocks 4 are disposed in the lower portions of the windows 3 and carry a roll 5 which is journaled therein. A similar pair of chocks'G are disposed in the upper portion of the windows 3 and carry a roll 'I which is journaled therein. The lower chocks 4 rest on the bottoms of the'windows 3 of the housing 2, while the upper chocks 6 are adjusted vertically with respect thereto by means of the usual screwdown 8.

of any desired type and can' be held in place by roll against the shoulders iormed at each end of- 'Ihe bearings 9 in the chocks 4 and 6 may be These wings, or ribs, I4 extend substantially on both sides from the common vertical center line' of the rolls 5 and 1.

The mill housing 2 carries a vertical pin I5 adjacent each of the chocks (4 and 6) of the mill. 5

Each pin I5 carries an inner link I6 which ex:- tends across the closure plate I0 of the adjacent chock, and an outer link I1 which embraces the link I6 in spaced relationship.

Each pair of outwardly extending wings, or l0 ribs, I4 on each of the closure plates I0 carries a pin I8 to which there is connected a clevis I9. Each lever I6 is connected to ythe'adjacent clevis I9 by a pin 2 I.

Each pair of outwardly extending wings, or l5 ribs,l I4 also carries a pin 23 to which there is connected a clevis 24. Each lever I1 is con- 'nected tothe adjacent clevis 24 by a pin 25.'

On the face of the housing 2 opposite each of the vertical pins I5 there is mounted a vertical 20 pin 26. Each vertical pin 26 carries an outwardly extendingfeye-bolt 21 on the outer end of which there is threaded a nut 29. The extended end of each lever I6 is right-angularly grooved, as at 39, to embrace the adjacent eye-bolt on the in- 25 ner side of the nut 29. On the face of the housing 2 beside each of the vertical pins 26 there is mounted a vertical pin 32. Each vertical pin 32 carries an outwardly extending eye-bolt 33 on the outer end of which there is threaded a nut 30 34. The extended end of each lever I1 is rightangularly grooved, as at 35. to embrace the adjacent eye-bolt 33 on the outer side of the nut 34.

From the foregoing it will readily be seen that the adjustment of the nuts 29 and 34 toward and 35 away from the mill housing 2' effects a similar adjustment of the levers I6 and I'l. Accordingly the chocks 4 and 6 and rolls 5 and 'I are adjusted axially with respect to each other. This enables the exact alinement of the grooxes X of the rolls. 40

In order to prevent the horizontal displacement of the chocks 4 and 6 and consequently the rolls 5 and 1 in the housing 2, the following construction is provided: f Both sides of each window 3 carries a liner y36. 45 One side of each window 3 is provided with a transverse and tapered keyway 31. Each keyway '31 has disposed therein a wedge-shaped. key 39 which carries a right-angular extension 39. The right-angular extension 39 on each of the wedge- 50 shaped keys 38 is bored to receive the threaded endof a bolt 4I which is suitably secured to an adjacent portion of the housing 2. The threaded end of each bolt 4I carries a pair of nuts 42, one on each side of the right-angular extension on each of the wedge-shaped keys 38. By proper manipulation of the nuts 42 the wedge-shaped keys 38 may bemoved to keep the chocks 4 and 6 snugly occupying the windows 3 in the housing 2, whereby horizontal displacement is avoided.

Referring to Figures 2 and 4, it will be noted that the apertures in the links I6 and I'I and the clevises I9 and 24 are made decidedly larger than the diameters of the pins 2 I, 25, I 8 and 23, respectively; likewise, the pins l5, I5', 26 and 32 are preferably substantially smaller than the clevis and arm apertures through which theypass in mounting the arms and associated members to the housing. In each case the inner faces of the apertures are annularly convex to provide a curved bearing, constricted adjacent its central portion and flared outwardly to each side thereof. This construction, which permits of relative vertical movements being effected between the several parts without binding or jamming, is clearly shown in Figures 2 and 5. It will be seen that unless the nuts 2S and 3ftA are set to the greatest degree in opposition, the parts will be loosely joined together and capable of being ineffectually shifted or jostled by the lost motion relationship afforded by the oversized pin receiving apertures.

It Will also be observed that when the nuts 23 and 34 are set in opposite directions to the practical limits, the various pins are drawn into forceful bearing engagement upon a side wall of their respective apertures, and the opposing forces thus set up tension all the elements to the end that each is rigidly and immovably fixed relative to the others. Hence, the roll checks, being integrally axed to certain ot the elements, are positively held against horizontal movement ax ially of the rolls, unless and until an adjustment is effected by resetting the nuts lt is of great importance that a wide range of axial adjustment is afforded by myinvention While, at the same time, ailorcling eiractness anc. precision in positioning the rolls relative each other, and that these desirable results are obtainable without any reliance being placed upon the accurate size and association of the interntting parts as is usually the case. in by mailing the pins substantially undersize, the inaccuracies 'of the pivotal bearings are so amplified as to become of large, definite values, susceptible of being accurately controlled, rather than the ordinarily vague, indefinite values of a magnitude commensurate with the infinitesimal imperfections from which they arise. rlhus, the evil is inten tionally magnied and positively controlled by setting and resetting the nuts Eil and 135, whereby the utmost in precision of adjustment is had independently of the size of any pin or other elementary part.

Referring to Figure i of the drawings, have disclosed the bearings il as being augmented by radial antifriction bearings and The bearing tti is disposed around the neck of the roll l between the end of its barrel and the adjacent side ol the choclr. The bearing lil is disposed around the neck or the roll l" and between the outer end ci the bearing ding ri f n iv ch is crew-threaded op.

1. In a rolling mill, a housing, means carried by said housing for mounting a plurality of rolls, said means including a chock, a roll having one of its necks journaled in said chock, means for precluding axial movement between said roll and said chock, adjusting means associated with said housing to move said chock for varying the axial disposition of said roll, said means comprising a plurality of levers having lost-motion connection with said housing and said chock including means for placing said levers in opposition to overcome said lost motion and thereby to rigidly ax said chock relative to said housing, the connection between said levers and said chock being constructed and arranged to afford relative universal movement therebetween.

2. In a rolling mill, a housing, a chock for journaling one end of a roll carried byY said housing, a roll journaled therein and secured against axial movement relative thereto, a pair of levers extending across said chock and pivoted upon said housing,` each of said levers having pivotal en gagementtherewith at its point of crossing, and means for positively moving one of said levers away from said housing to pull said chock in one direction and for moving the other of said levers toward said housing to push said chock in the opposite direction.

3. A device for effecting the axial adjustment of rolls comprising a roll journal, a roll rotatably carried therein and secured against relative axial movement thereto, means for moving said roll axially by eilecting the movement of said journal comprising a pair of levers each having lostmotion connection with said journal, and means for actuating each of said levers in direct oppo sition, whereby said lost-motion is taken up and said journal is adjustably anchored by the equilibrium of said opposed levers.

In a rolling mill, a device for effecting the axial adjustment of rolls comprising means for gripping the neck of a roll, a lever connected to said gripping means constructed and arranged to move the roll in the direction of its axis, another lever mounted independently of the rst named lever constructed and arranged to move said roll in the opposite direction of its axis, and means for actuating said levers in coordination to move said roll axially in either direction and for actuating said levers in opposition to securely anchor said roll.

5. In a rolling mill, a housing, a chock for journaling one end of a roll carried by said housing,

a roll journalecl therein and secured against airial movement relative thereto, a pair of levers pivoted upon said housing, each of said levers extending from its point of pivot on said housing across said chock to a point of adjustment with the housing on the opposite side of said chock; means for each lever at said point of adjustment to control its position about its pivot relative to lthe housing, and means for connecting each ot said levers to said chock at the point where it crosses 'the latter.

6. ln a rolling mill, a housing, a chock, an axial extension on said chock, a pair of levers pivoted 'upon the housing, said levers extending across chock i cooperative relation to said axial tension., means for connecting said levers inde ndently said axial. extension, and means iol moving said levers coordinately to move the chocl; and for moving said levers oppositely to anchor the same,

7. In a rolling ill, housing, mear'i :tor jourroll there o., a pair of levers extending acrosssaid housing to overlie saidjournal-means, a bearing extension aixed to said journal-means so as toextend therefrom crosswise to said levers,

and a separate link -pivotally connecting each lever to said bearing extension.

8. In a rolling mill, a housing, means for journaling a roll therein, a pair of levers extending across said housing and pivoted to the latter on separate bearings, a bearing extension aixed to said journal-means so as toextend therefrom crosswise to said levers, and a separate link piv- Aotally connecting each lever to said bearing extension.

journal-means so as to extend therefrom crosswise to said levers, and a separate link pivotaily connecting each o! said levers to said bearing extension.

10. In a rolling mill, a housing, a pair of pivot bearings carried by the housing, a lever mounted for oscillation in each of said bearings, a roll chock disposed in said housing, a clevis bearing extending axially from the chock, each of said levers extending across said housing in the plane of said clevis bearing, one oi' said levers lying within said clevis bearing, a link pivoted to each of said levers intermediate its ends, a pin pivotally securing ea'ch of said links to `said clevis bearing, and adjustment means associated with each of said levers for varying its position with respectl to the housing and with respect to the other lever thereof.

GEORGE H. ROSE.

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