US960297A - Process of rolling metal. - Google Patents

Description

W. D. EYNON.

PROCESS OF ROLLING METAL.

APPLICATION FILED DEC. 21, 1908.

960,297, Patented June 7,1910.

W. tit mom materia UNlllllEll) @TATEd PATENT @FFXCE.

@YD EYNQN, QB PATWON, NEW JEY.

PRUCES @l MILLING METAL.

iliiill,%9?. Epeeiflcation or Letters Patent.

Patented time a, taro.

Application filed fiecemher El, 1%. Serial lilo. MAW.

To all whom it may concern:

Be it known that 1, WILLIAM D. Ernon, a citizen of the United States, residing in the city and county of Philadelphia, State of ennsylvania, have invented a new and useful Process of Rolling Metal, of which the following is a specification.

.This invention relates to a process of rolling metal forms and the like and more articularly to a method of rolling switch points from T-rails or like sections, as shown in my application Serial No. 323,021.

It is well known in rollin mill practice that it is necessary to care ully bring the metal down to the desired size and form through a series of stages, running from a minimum pressure, producing a five to ten per cent. working of the thickness of the metal or a maximum of twenty-five to thirty r cent. of the thickness of the metal in the al staes, whereby the required thickness of the i=- ished article is produced. It is therefore necessary to use great care in the designing of the rolls in order to produce the most efficient working of the metal and still not cause a crushing or breaking down of the molecular section thereof. In the present day rolling mill practice, the metal which is passed through the rolls subjected to a compressive force on one side and on the other to a resisting force, both forces producing a drawing of the metal on each side of substantially the same degree.

In certain classes of work it is desirable to adect the rolling of the metal on one side only, which class of work relates more articularly to the rolling of tapered articles and it is the object of my resent invention toproduce an'article rolled from one side of the metal only during its travel through a succession of roll passes.

lnmy novel process, as herein disclosed,

is placed one suitable device and 1th! sumessively through a series of rolls, whereby one side of the metal is substan-- tially unadected, while the opposite side is compressed and drawn to produce, when the last step is com leted, a com lete umta finished article of the shape and size desire Fol-the purpose of illustrating my invention, I have shown in the accompanying .The shaft 5 carries thereon a roll drawings one form thereof which is at presstood that the various instrumentalities of which m invention consists can be variously arrange and organized and that my invention is not limited to the recise arrangement and organization of t ese instrumentalities as herein shown and described.

Fi re 1 represents, in front elevation, a plura ity of rolls and cooperating adjuncts embodying my novel processof rolling metal. Fig. 2 reperesents a side elevation of the same on a somewhat reduced scale, showing a portion of one of the pass tables. Fig. 3 represents a detailed side elevation of a pair of rolls showing more particularly a table in operative position.

Similar numerals of reference indicate corresponding parts in the figures.

Referring to the drawings: 1 designates a base, having supported thereon standards 2 and 3, serving as journal supports for the shafts 4 and 5, carrying respectively my novel rollin mechanism. In the present instance sac of the standards 2 and 3 is provided with a recess 6 ada ted to support suitable bearing blocks 2 and 8, in which the shafts 4 and 5 are respectively j-ournaled, the upper bearing blocks 8 being preferably mounted for sliding movement in order to vary-,aas desired, the distance between the twoshafts 4 and 5 and consequently the compressive action between the H. D. EYNON, 91" PHILADELPHIA, PENHExYLVQ-EFIA, ASSIE5B @NEFQUEWE J'Allililii J. FISHER, 0h EHELADELEHKA, PENHSYLVANEA, 0hTE-FURTE "lifl EEL- ING, 0]. NABBERTH, .PENNSYLVANM, AND own-ram @0 DAVIE rolls carried thereby. As here shown, the

bearing blocks 8 are each secured to a screw 9 which passes through a threaded aperture in the end of the standards Band 3- and are maintained 'in correct position by means of set nuts The shafts at and 5 are suitably connected by gears 4 and 5', whereb Y rotation of the shafts 4 and 5 and their a juncts is efiected in opposite directions. The shaft 4 carries thereon a rollll, hereinafter refierred to as the compression roll, which coiisists, in "the present instance, of a plurality of dream;- ferential grooves 12, 13, l4, l5 and 16, each forming a surface for workin the metal to complete one step in the re ling process. 7, ereiirafter referred to as a resisting roll, the stir face of which is divided by a number of cir-. cumferential grooves 18, 19, 20, 21 and 22, each forming a surface corresponding in number to the grooves of the compression roll 11 and located in substantial ahnement with the same, for a purpose to :be herein and 21 is substantially similar to each other and conforms to the bottom and sides of a different work or pass table 24, with which they cooperate, the groove 21 having greater circumferential diameter than the groove 20, thereby working the metal carried by the table to a reater degree than that traversed by the tabe in the pass formed by grooves 14 and 20. The contour of the roove 22 is likewise shaped to the outline 0% a work or pass table 25 and acts to support the same in its correct position relative to the compression groove 16 of the roll 11. It will thus be apparent that a series of openings are formed extending the-length of the rolls 11 and 17 and through which the metal to be worked is passed successively on what 1 term a work or pass table. Attention is called to the openings formed by the rooves 12 and .19, 13 and 19, in both of which the compression grooves 12 and 13 have'a cut away portion 26, whereby a segmentary surface is formed-in order that the compressive effect may not be exerted upon the full length of the material in the initial stages of working.

Adjacent one side of the two rolls 11 and 17 and in the present instance extending substantially in alinement with the passes receiving the table 23, are a pair of stops 27 and 28, respectively, one 0 which, 27, is preferably located at a point nearer the rolls than the other stop 28, for the purposeof limiting the first stage of working the metal. Adjacent the end of the rolls 11 and 17 where the final rolling is accom lished, a

-roll 29 is mounted in any suitab e manner for rotation and so placed as to bring the periphery thereof in contact with the joint formed between one of the rolls, here shown as 11, and the table 25.

It will. be apparent that any material traversing this op'eningon the table'25 will thus receive a lateral workin in combination with the usual vertica acting compressive force. It will be noted that on the compression roll 11, flanges 30, 31 and 32 are provided, which in the resent instance extend a sufiicient distance rom the shaft. 4

to bring them beyond the ed e of the passtable and thereby complete y inclose the metal being worked upon.

On the lower resisting roll 17 similar flanges 33 and 34 are formed'and extend also in a manner to inclose the work and pass table. The function of .these flanges is to prevent finning of the article during its travel through the rolls, since in each case the angular sides of the flange tend to work. the metal laterally under a vertical pressure, and thereby overcome the tendency to form a bur or fin. Furthermore, this inclosing of the table and the material betweenthe flan es of the workin rolls guards against ateral drawing and ermits only lengthwise drawing, as desired The table 23, which coo erates with the first pair of rolls, is provi ed 'with a working surface so shaped as to receive a T-rail blank, one side of which is to be shaped by the grooves 12 and 13, preparatory to traversing the two openings formed by the grooves 14 and 20, 15 and 21. In these latter asses the contour of the table surface is so clianged as to vary thelongitudinal rolling action, drawingthe metal on one side, reducing the flanges and forming a longitudinal tapered artic e.

25 designates the finishing table, whereon the material is laced to roll out a switch point as a comp eted structure. This table 25 performs the last step in my novel rolling process and the construction thereof preferably difl'ers from the other pass tables in that a taper 35 is provided, running, in the present instance, longitudinally of the table.

and varying in distance from the axis of the compression roll.

Of course it will be understood that various tapers may be formed onthe table to produce a variety of results, the function of the taper being to bring the material closer to the compression roll at -certain parts of its travel through the pass and thereby work one side only to a corres onding taper.

In the rolling of materiai into articles such as switch points, by the ordinary methods, the forces are such as tend to produce a shearing of the metal near the base of the flange and it is impossible to produce the result I have attained by my novel process of rolling.

By the use of a member which moves with and sup orts the material during rolling, I am enab led to distribute the'reaeting force over a considerable area and thus reduce the working of one side to a minimum, resulting for all practical pur oses, to substantially an unappreciable rolhng of this side, while the op osite side is worked as desired. The method consists in placing a blank on a suitable supporting member, having a surface conforming to the contour of one side of the blank, and then .passing both the blankand supporting member through .a

series of passes, which Operate to reduce and draw one side of the blank only.

In the rolling of a switch oint the method is continued through-sever series of asses, in each of which seriesa separate supporting member is utilized in order to give to the blank the necessary configuration of the article desired.

It will now be obvious that I have devised a new method of rolling metal forms and more particularly switch points from a T- rail, the fundamental, underlying principle of which consists of passing in a succession of steps, a member adapted to support a blank to be rolled, which in traversing the rolls of a rolling machine produces a draw- .ing and working of the metal onone side on and in each step bringing the metal to a desired shape and thickness.

In so far as I am aware Iam the first in the art to devise a process of working metal on one side only while traversing a series of passes, whereby a predetermined shape and drawing of the metal is accomplished.

It will now be apparent that I have devised a novel and useful construction which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description and while I have in the present instance shown and described the preferred embodiment thereof which has been found in practice to give satisfactory and reliable results, it is to be understood that the same is. susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described myinvention, what I I claim as new and desire to secure by Letters Patent, is

1. The method of forming a tapered switch point from a longitudinally extending blank, of flanged cross-section, which consists in supporting the blank upon a table which conforms in shape to one side of said blank to longitudinal rolling action sufiicient to draw the metal on said side of tudinally tapered article.

3.-The method of formin a tapered switch point from a standarf railroad T- rail, which consists in supporting the rail upon a-table which conformsin shape to one side of the rail and subjecting the other side of said rail to longitudinal rollin action sufficient to draw the metal on sai side of the rail without disturbing the opposite side, reduce the flanges and form a longitudinally tapered article.

WILLIAM 1). EYNON;

Witnesses ROBERT M. Em, C. D. MCVAY.

5 of the blank and subjecting the other side

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