US1109050A - Method of finishing beams. - Google Patents

Description

W. A. DUNN. METHOD OF FINISHING BEAMS.

APPLICATION FILED 11017.5, 1910. RENEWED FEB. 7, 19.14.

1,109,050, Patented Sept. 1, 1914.

6 SHEETSSHEET 1.

paw 7 70] M J3 4 v MINIMUM 314 W A .Duiia W. A. DUNN.

METHOD OF FINISHING BEAMS.

APPLICATION FILED NOV. 5, 1910, RENEWED FEB. 7, 1914.

1L,1@9,5 Patented Sept. 1, 1914.

5 SHEETSSHEET 2.

gwuzmlioz W. A. DUNN.

METHOD OF FINISHING BEAMS.

APPLIUATION FILED NOV. 5, 1910. RENEWED FEB. 7, 1914. 1,109,050.

Patented Sept. 1, 1914.

5 SHEETS-SHEET 4.

7Cowms W. A. DUNN.

METHOD OF FINISHING BEAMS.

APPLICATION FILED NOV. 5, 1910. RENEWED FEB. 7, 1914.

1,109,050, Patented Sept. 1, 1914.

6 sHBnTs'sHEnT a.

III! E "ll!" I HEW UNITED. STATES PATENT WILLIAM' A. DUNN, F SMITHVILLE, MINNESOTA, ASSIGNQRi-OI? ONErHALF 'TO A; i 'MILLER, JR, 0F DULUTH, MINNESOTA. q

1 METHOD OF FINISHING BEAMS.

- Specification of Letters 'Iatent.

Patentedseptl, 1914.

Application filed November- 5, 1910, Serial-No. 590,920. Renewed- Febi'uary 7, 19-1 1. Seria1NaI '817328.

To all 'whom it may concern: I i 3 .Be it known that I, WILLIAM A. DUNN, a

. citizen of the United States, residing at Smithville, in thecounty of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Methods of Finishing Beams, of which the following is a specification. v

This invention-relates to an improved method of finishing beams after-the same have been treated in a shaping mill. My improved'method consists in confining the beam between movable parts, during the period of finishing the products whereby the molecules of metalare confined and shaped in such manner as to prevent the metal bucklingwhich insuresof theproduction of an accurate and properly alined beam. The method also compreh'ends improvements in the various steps necessary to confine and hold the metal during the period of productionof a beam.

Inthe drawings-Figure 1is a side elevation partially in section of a mill constructed in accordance withmy invention. Fig. 2 is a partial plan'view and horizontal section approximately on the line .2'.2, Fig. 1, the caps of the set of rolls at fliertop oi the figure being shown in position, while the caps of the corresponding rolls at thebottom of to illustrate the interior'arrangement of the.

means for supporting one of the side vertical rollswhich cooperates with the set of web reducing rolls. Fig. 4 is a face view of one of the vertical side rolls shown in Fig. 3, and its supporting carriage. Fig.5 is a plan view ofthe same. Fig. 6 is a detail side elevation of the carriage, shown in' Fig. .3. Fig. 7 is a detail transverse section on the line 7+7, of Fig. 2, to illustrate the in terior construgtion of the mounting done of the vertical rolls-which cooperates with the flange controlling set of rolls. Fig. 8 is a detail elevation of one of the rolls,.shown in 'Fig. 7, and its supporting carriage. Fig. 9 is a detail plan view of the same. Fig. 10 isa side elevation of the said roll and its carriage. Fig. 11 is across section on line 11--1'1, Fig. 2. Fig. 12 is a detail vertical seifion taken through the flange controlling ro s.

plication and executed of even date Serial Referring to tneorawrngs, 1, indlcatesa foundation upon which the mill is mounted, and supported thereon are guidesways '2, and 3, in which'are' mounted two airs of vertically disposed frames"4,'and 5. The frames 4,and 5, are adjustably fixed to the guideways 2. and 3, by means of bolts indicated' at 6.

In the vertical frames 4, theset of web reducing rolls? and 8 are mounted. The lower Web reducing roll 7, is mounted in stationary bearings9, while the upper web reducing roll 8, is mounted in an adjustable bearing 10. A The bearing 10, is formed with guideways to engage guldes 11, on the inside of-the frame 4, and at its-upper end the said bearin has an upwardly extending screw 12, swiveled in the bearing and engaging a threaded opening in the vertical frame 4. On the upper end of the screw 12 is a worm gear-13. Dependingfrom opposite corners of the' bearing 10, are rods 14, connected at their lower ends by a yoke 15, and pivot-ally connected to the yoke-is a piston rod 16, the

piston of which operates in a c linder'17, so

cured to the'underside'of the ame 4. The construction just described, in reference to the bearing-10, and its adjustment, it will be understood is duplicated on opposite sides ofthe roll 8, to'in'sure that the said/roll will be uniformly raised whereby to prevent irnegularities in. the product produced. The .web reducing rolls are of cylindrical formation and have their. outer edges beveled as shown at 8', and are constructed'exactly alike.

Mounted inguideways. in the respective vertical frames 4, are carriages 20, each of which carries a vertically mounted side roll 21, arranged adjacent the ends of thehorizontal web' reducing rolls 7 and 8. Each carriage 20 comprises a lower cup-shaped member. 22, and an upper member or cap 23, the latter being bolted, as indicated at 24. to the lower cuprsha d member 22. The two members 22 'an 23 are formed with alined openings 24', to receive the journals 25, of a central hollow hub 26,- which is flanged toengage the surfaces of the two members 22, and 23, as" shown clearly in Fig. 3.

The cap or member 23, is formed with a shoulder 23, and an outwardly extending flange 23", the latter and the shoulder engaging the cup-shaped member 22, 'whereby when outward thrust is given the vertical roll 21, the shoulder 23, will abut against the inner surface of the cup-shaped member 22, and'transmit the strain on the journals to the frame. This hub-is cored to form a chamber 27 with which communicates a water supply pipe 28, for the introduction of water, which acts as a cooling medium when the mill is in operation, the water passing in at the bottom of the hub and overflowing through the top thereof. Fitted over the hub 26, is an-adjustable tapered bushing 29, keyed in positionat 30, and on which thevertical roll 21, revolves. The cone-shaped bushing 29, may be adjusted vertically to properly center the vertical roll 21, by means of screws 31, which pass up through threaded openings in the lower cupshaped member 22. I have found -by practical experience that once the cone-shaped bushing 29 is set, it has a tendencyio wear on one side, due to the pressure exerted by the metal passing between the periphery of the vertical roll 21, and the ends of the horizontal web reducing rolls 7 and 8. It is, therefore, necessary to provide means for overcoming this objection. I have provided the upper journal 25, of thehub 26, with a series of grooves indicated at 35, and in the bearing 24*, of the upper member 23 of the carriage, I have provided a groove 36, which may be brought into registry with one of the grooves 35, to receive aspin 37, whereby to lock the hub and the cone-shaped bushing 29, in fixed position. Therefore, once the cone-shaped bushing 29, is set by the screws 31, and the pin 37 ,if it be desired to change the position of said hearing 29, the pin 37 is withdrawn and a tool is inserted in theopening in the upper journal of the hub 25, and the cone-shaped bushing'29 and the hub 25 are given a quarter turn to bring the next succeeding notch 35, into registry with the notch 36; The pin 37 isnow inserted again, and a new surface of the cone-shaped bushing 29, is presented opposite the oint where the greatest pressure is exerted y the metal in passing through the mill.

The carriage 20, is formed with two annular oil receiving chambers 38, which are connected by an oil channel 39, oil being supplied through an opening 40, whereby the coneshapedbushing 29, may be thoroughly lubricated.

It is noted that according to my invention I use but a single side vertical roll 21, on

55 each end of the web reducing rolls 7 and 8,

and they are each in alinement with the other and are adjusted simultaneously toward and from the ends of the web reducing rolls 7, and 8. Each carriage 20, has swiveled to its outer end, two screws 42 engaging threaded openings 43 in bushings in the guide of the carriage 20. On the guideway are, fixed caps 44, each having an annular flange 45. The screws 42 pass through the caps and onthe square ends of thejscrews 42, fit worm gears 46. On the inner surface of the worm gears 46, are bolted plates 47, which engage behind the annular flanges 45-, to retain the worm gears in proper position and form bearings for the same. The worm gears 46, engage the worms 48, located onshafts mounted in bearings directly under the gears and the ends of said shafts are provided with beveled pinions 49 meshing with beveled pinions 50, on shafts 51, extending upwardly above the vertical frames 4, where said shafts 51 are provided with beveled pinions 52. It will, of course, be understood that the mechanism just described, is duplicated on both sides of the mill, and a horizontal power shaft 53 is provided with beveled pin ions 54, which engage the beveled pinions 52, and simultaneously operate the two carriages 20. On the shaft 53, are worms 54, which engage with the worm gears 13, to raise and lower the bearings 10.

In the vertical frames 5, is a lower flange controlling roll 60, mounted in fixed bearings 61, and an upper adjustable flange con trolling roll 62, mounted in a bearing 63, having guideways to engage guides 64, in the sides of frames 5. The bearings 63, have swiveled to them screws 64, engaging threaded openings in the frames 5, which screws extend through the frame and are provided with squared ends on which fit worm gears 66. Extending from the lower corners of each of the bearings 63, is a rod 67-, the respective pairs of rods being connected by a yoke '68, connected by a piston rod 69, with a hydraulic cylinder 70.

The flange controllin rolls: have enlarged end portions indicate at #603 the outer edges of which are beveled at 60'. -'Connecting the enlarged portions is a hub 60, and extending from the outer ends "of the said rolls are flanges orhubs 60, designed to engage the edgesof the flanges of the beam when passingthroughrthe mill. Adjacent each end of the flange controlling rolls is a carriage '72, in which is mounted a verticallydisposed side roll 73, the periphery of which co6perates with the ends of the horizontal flange controlling rolls 60 and 62. 125

Each carriage 72, comprises a lower member 74, provided with a rib 75, and an upper member 76,;which has a rib 77,-designed to engage with the rib 7 5, to assist in locking two members together and resist the out- 1 3G ward strain of the pressure of the metal passing through the mill. Each member 7 4, and 76, has bolted to it a cap member 78, and a bearing is formed by said caps and the two members, as indicated at 79 to receive the extended journals 80, of a'hub 81, on which the vertical roll 73 is mounted. The vertical roll 73, is formed with depressions 82, on opposite surfaces and the mem-.

bars 74 and 76, are grooved as at 83. By this construction ll. am enabled to obtain a substantial bearing forthe journals of the hub 81, the groove 83, permitting of the enlarged outer portion of the vertical roll 73, being seated within the carriage, as clearly shown in Fig. 7. The two members 74, and 76,,of the carriage 72, are bolted together by bolts 85, so that. the parts can be conveniently assembled and adjusted when required.

Swiveled on the outer surface of each of the carriages 72, is a single screw 86, which is in the lane of the centers of the hub 81, and the ange controlling rolls 60 and 62,

86, fits a worm gear 87. A hub 88 extends from the outer surface of the guide-way of the carriage 72, and at its outer end is formed with a flange 89, behind whfch fits a ring 90, bolted to the inner side of the worm gear 87. The worm gear 87, meshes with a worm 91, mounted in bearings div rectly under the worm gear 87, and on one end of the worm shaft is a beveled gear 93, and secured to a vertical shaft-94;, mounted in hearings on the frame 5 is a beveled gear 93 meshing with gear 93 and on the upper end of said shaft is a beveled gear 95. As stated, this mechanism is-on. bothsides of the mill so as to simultaneously adjust the two carriages 72.

A horizontal shaft'96, mounted above the vertical frame 5,-has secured to it beveled.

gear wheels 97, which mesh with the beveled wheels 95, and said shaft is also provided with a worm 98, which engages with the worm gear 66. Also on the shaft 96, is-a beveled gear wheel 96 which is-engaged by a beveled gear wheel 99, on a shaft 100, on the opposite end of which is a beveled'gear 101, meshing with a beveled gear on the horizontal shaft 53.

Supported on rods 105, and-i106; mounted in openings 107, and 108,. in' rthe Vertical frames 4 and 5, is a bottom guide 109. I The guide 109, is approximately flat on its upper surfaces-and 'o'nits opposite edgeseit is provided with downwardly extending flanges 110, to correspond to the configuration of the inner surface of the beam, as shown in Fig. 11. lhe ends of the bottom guide extend over the web reducing rolls and over the flange controlling rolls, as'clearly indicated in Figs. 1 and 12. A front bottom guide 111, extends forwardly from the web and on the outer squared end of the screw reducing rolls and it is supported on a bar 112, which fits in openings 113, in the ver- .tical frames 4.

.114 indicates a top guide located in rear follow the same.

Fulgrumed on. the shaft 115, is a top guide l17'which extends rearwardly and 18 formed with anniopening through which passes the central portion of the upper flange controlling roll 62 as shown in 1g. 12, thus permitting the upper-guide 117, (to-travel up and down with a top flange reducing roll. All of the guides are constructed so.

as to correspond to the interior surfaces of the beam being rolled, butthe-space between :the horizontal portions of the upper and :lower guides is a trifle greater than the thickness of the web of the beam Q as to prevent the metal sticking; As the section v of metal being rolled does not change its inside size, the guideswill at. all times pro erly guide the material. to and from t e rolls without the, liability of side swaying or twisting. Furthermore, the ides are so constructed that they guide t e flanges of.

.the beam as well as the Web portions.

Short sideguides120,,and,;121,-are lo:

cated in frontand rear of the web reducing .rollS, their ends being dovetailed at 122, and fitting in.correspondingly-. shaped openings in the carriages 20, while. their opposite ends are connected to rods 123, ,passing.

through lugs 124, on the vertical standards .54. -The outer free ends of the rods 123, are threaded and are provided with-nuts, as indicated at 125, the threaded portion passing through an openin in lugs l26secured to thecarriages 20. this construction,- both ends 50f the-side guides move simultaneously with'the carriage.

In operation, a blank which has been previously treated in ashapi mill is entered betweentheguides120, tot e web reducing rolls 7 and 8. ,The end flan es a-of the beam fit in the space 6, formed' .etweenith'e ends of-th'e web reducing .rolls and. the periphcry of the vertical rolls; 21, while the web portion 0 of the beam is operated'nporrby the cylindrical portions of the web reduc n rollsf The web reducingrolls are operate through the medium of suitable gears, which feed the beam toward the flange controlling rolls, the beveled portions 8 of the web reducing rolls and the periphery of the'vertical rolls 21 creating pressure sufiicient to shape the flanges of the beam, as shown in Fig. 3. As the beam passes from the web reducing rolls through the guides in rear of the same, it is directed by the latter to theflange controlling rolls. Thehubs 60 on the flange controlling rolls are so arranged that they act upon the edges of the flanges a of the beam, as shown in Fig. 7. The vertical rolls 73, are so situated, that the pressure exerted by the hubs 60 on the flange a prevents buckling, and a substantially uniform flange is produced.

By providing the specific construction of the end vertical flange rolls 73, and their bearings, I am enabled to utilize a roll having the necessary strength and size to operate adjacent the two flange controlling rolls, and at the same time I dispense with what has heretofore been 'used, 2'. e., backing rolls and a saddle to carry the side rolls.

In the production of a beam according to the steps hereinbefdre described, the web and flanges of a beam are substantially confined between the web red-ucing rolls, and the side vertical rolls, which insures of a positive shape being imparted,- and by the construction and arrangement of the guiding means the beam is held in alinement during the period of its formation and for a definite period after leaving theflange con trolling rolls, and its forward end is therefore prevented from bending laterally. Again it is of the utmost importance at the time of the shaping of the metal by the'web reducing rolls, that the friction between the shaping elements be reduced to a'mini: mum, which is successfully overcome by the provision of the end vertical rolls.

The second important step in my methodconsists in confining the metal flanges of the beam during the period theyare passin between the flange controlling rolls. Were it not' for this step, ex erience has taught that the flanges become istorted and buckle, and therefore throws the surface of the beam out of alinement. But by providing apassageway the walls of which move 2'. 6., the-flange controlling rolls and the adjacent vertical rolls, the metal is rigidly held in bounds and is gradually compressed and confined to produce the necessary shape;

The third essential step in my method resides in confining the beam between the time of the formation of the web, and the formation of the flanges. By maintaining the beam in a determined path, and holdin in this path, the liability of uneven introduction to the flange forming rolls is entirely dispensed with, and a beam of uniform and accurate size and shape is produced.

\Vhat I claim is:

'1. The herein described method of rolling flanged beams, consisting in subjecting the surfaces of the web of the beam to rolling pressure and simultaneously subjectin the outside surfaces and opposite edges 0 the flanges to rolling pressure, and holding the flanges of the beam in positive alinement throughout the Space of application of the rolling pressure and for a definite distance after the beam has received the rollin pressure by contact of guiding means with the inside of the flanges to prevent lateral bending of the forward end of the beam.

2. The herein described method of producing flanged beams, consisting in subjecting the upper and lower surfaces of the web to rolling pressure and simultaneously therewith subjecting the upper and lower edges of the flan es of said beam to rolling ressure at a diflerent point in'the length 0 the :beam, subjecting the outer side surfaces of the flanges of the beam to inward rolling pressure adjacent the points where the upper and lower surfaces of the web and the upper and lower edges of the beam are subjected to pressure, and holdingthe flanges of thebeam in ositive alinement throughout the space 0 application of the rolling pressure and for a definite distance after the beamjhas received the rolling pressure by contact of guiding means with the inside of the flanges to prevent lateral bending of the forward end of the beam.

3. The herein described method of rolling beams, consistingin subjecting the surfaces of the web of the beam to rolling p essure. and holding the beam in positive alinement throughout the space of application of rolling pressure and for a definite space after the beam has received the rolling pressure by contact of guiding means with the inside of the flanges to prevent lateral bending of the forward end of the beam.

In testimony whereof I afiix my signature Witnesses:

G. W. SnnNoToN, K. E. Khan.

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