US950280A

US950280A - Manufacture of deep-flange sections.

Info

Publication number: US950280A
Application number: US46205808A
Authority: US
Inventors: George H Everson
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-11-11
Filing date: 1908-11-11
Publication date: 1910-02-22
Anticipated expiration: 1927-02-22

Description

G. H. EVERSON.

MANUFAGTURE OPDEEP FLANGB SECTIONS.

APPLIUATION FILED NOV.11, 190B.

Patented Feb. 22, 1910.

3 SHEETS-SHEET 1.

INVENTOR y,... Z4, 5f"

WIV'I'NESSESZ G. H. EVERsoN.

MNUFAGTURE 0E DEEP ELANGE SECTIONS.

APPLICATION FILED NOV.11, 1903.

Patented Feb. 22, 1910.

3 SHEETS-SHEET 2.

G. H. EVERSON.

MANUFAGTURE 0F DEEP FLANGE SECTIONS.

APPLICATION FILED NOV. 11, 190B.

Patented Feb. 22, 1910.

3 SHEETS-SHEET 3.

wvl-Messes: I

|NVENTOR 'UNTTED sTATEs PATENT ernten'.

GEORGE H. EVERSON, 0F PITTSBURG, PENNSYLVANIA.

MANUFACTURE OF DEEPFLANGE SECTIONS.

To all whom 'it may concern:

Be it known that I, GEORGE H. EvERsoN, a resident of Pittsburg, inthe county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Manufacture of Deep-Flange Sections. ot' which the following is a specifica tion.

The primary object of this invention is to produce deep fla-nge sectins without impairing the stability of the ingal, and particularly without weakening tie web, so that such sections may be produced by an operation which is substantially continuous, z'. e., continuous with the rolling of the metal .from slabsor ingots.

The limitations in producing flanged sections by rolling are well recognized. It is practicable to roll flanges of a depth of from two to three inches without seriously ifnpairing the metal. The peripheries of the rolls travel faster than those portions nearer the roll centers-intersected by the grooves. lVith deep grooves't-he flanges wedge or bind therein and cannot respond Ito the more l rapid movement of the web transmitted from the roll peripheries. The result is that the metal isrfinjuriously strained, and insome cases the web is ruptured. Sections thus produced are not available for bridge and like structural. work where full strength ,is required of the web. The resultis that for such uses the deep-flange sections are built up, the flange and web members being rolled separately and riveted together so that their cost is much greater than a like section formed by rolling.

The present invention is designed to obviate these diiiiculties and eliminate the expense of fabricating and riveting by ,providing for the production of sections having integral flanges of any desired width. In the preferred practice a blank is rolled with web and flange members finished as to width but in such angular relation to each other that the blank is produced in a roll pass shallower than the finished section, so shallow that no portion of the metal is subjected to injurious unequal rolling. With the web and flanges fully proportionedA the finished section is produced by simply bending the blank to place those parts in their final an- Specication of Letters Patent.

Patented Feb. 22, 1910.

vApplication led November 11, 1908. Serial No. 462,058.

sular relation. The initial heat. for the m11? ing operation is sufficient for the final bending so that the shapes are produced by a continuous operation, the rolling of the blank being immediately followed by the bending which gives to the section its inished form.

In practicing the method, the blank is preferably4 rolled with angular longitudinal projections and fillets or grooves at the junctures of the web and flange members, thereby not only perfectly forming said members in the rolling operation, but also by the same operation accurately defining and'proportioning the metal at the angles or corners, the same being in no way disturbed or im-v paired by the subsequent bending. It is further characteristic of the invention' that the blanks are rolled with corner-forming projections disposed downwardly so that the direction of the vertical bending pressure is upward rather than downward. The result is that the blanks move from the nal roll pass on to a roll table and the mechanism for exerting vertical pressure may be arranged and operated, from beneath, which obviously is much more convenient and affords amore expeditious operation than though it were necessary to so support the blanks as to permit of downward rather than upward bending. f l

The invention may be practiced in producing sections of various shapes. In some instances, particularly for a relatively shallow section, the blank may be so rolled that -only a. single bending operation is necessary to give it final form. With other sections, and particularly where the flanges are relatively deep, two such operations are had.

In the accompanying drawings, Figure l is a view of a final roll pass for producing a blank for one form of a deep fla-nge section, the blank being also shown. Figs. 2 and 3 are views of mechanism for bending Vthe blank of Fig. l into finished form, said views indicating by full and dotted lines the several steps of the bending operation. Fig. 4 is a view similar to Fig. l illustrating a blank `having relatively narrow flanges adapted to be given final form by a single operation, that operation being indicated by full and dotted lines in Fig. 5. Figs. 6 to 11, inclusivey'show various sectional shapes with appropriate mechanisms for bending the blanks into final form. Fig. 12 illustrates the section formed by the bending mechanism of Fig. 11.

Referring to'Figs. 1, 2 and 3, the relatively shallow roll pass A is shaped to produce a substantially flat blank, of which 1 is t-he web and 2 the flange` members. The

rolls are preferably so turned as to producel the right angle longitudinal projections 3 on the under side of the blank at the junctures of the web and flange members, and corresponding fillets or grooves 4 in the upper face of the blank. The metal is curved at 5 where the flat surface of web l merges into one of the inclined flat faces 6 of projections 3, and similar curves 7 are provided where flanges 2 merge into the outer leg 6 of projection 3. Obviously, the web and. flange members may be any desired width.

At the completion of the rolling operation, the blank passes onto a table or horizontal support consisting of a series of rollers 8, as many such rollers being employed as may be desired.l These rollers are each .grooved at 9 to receive angular projections 3, thereby maintaining the blank in correct position for the bending operation. The right angleprojections 3 are of the form,.both as to i l tions take place.

thickness land shape, of the corners of the finished section, and to complete the latter it is only necessary to press the angular projections into the 'plane of web 1, which operation either partially or wholly completes 35' the forming of the section.

For wide-flange channels of the form shown in Figs. l'to 3, two bending opera- The first is accomplished by means of the notched knuckles 10, pivoted'to the vupper ends of links 11, which in turn are connected to the toggle levers 13 operated by the piston rod 14 of a suitable ram or power cylinder not shown. For the first bending, the notched knuckles 10 embrace the corners or projections 3, the arrangement being such that the upward bending ressure is applied to the corners and to the lnner faces 6 of the projections, and in this first operation the metal is so bent as to eliminate curves 5 and place legs or branches 6 of the angular projections in the planeof web 1. At the completion of this" first operation, the parts are in the position shown in dotted lines in Fig. 2, with the outer faces 6 of the projections turned straight upward,

and with the flanges inclined outwardly due to curves 7. To eliminate these curves and thereby place the whole ofthe flange at right angles to web 1, the flanges are engaged by the 4laterally movable' pressing heads 15 which when moved inward straighten up the flanges, obliterating curves 7, as in Fig. 3, It will be notedthat the first bending operation is accomplished by upward pressure, the

mechanism moving upwardly and flange members 2 away rom the4 roller support. This direction of the pressure is quite important, as thereby the invention may be practiced with a very simple form of rolll table, it being only necessary for the rolls to be grooved to accommodate the angular projections of the blank. During this bending operation it is necessary to hold the blank or at least the web portion thereof from moving upward'. This may be accomplished by means of two foot-like pressing members 16, suitably supportedy from' above, and preferably positioned to press on the outerportions of the web, or at points adjacent to the angle and .groove defined juncture of' the web and flanges.

For relatively narrow flanges, the blank may be produced in the roll pass B of Fig'. at, lwherein theV angular downward projections 3 and opposite fillets or grooves are formed as above described, but in which the 'such inclined position as to produce the blank in a comparatively shallow roll pass so that there is no injurious unequal rolling or straining of the metal. ItA is obvious'.

however, that the comparatively narrow flanges may also be produced by the bending operations indicated in Figs. 2 and 3.

For producing channel sections of the shape shown in Figs. 6 and 7, wherein the extremities of the flanges are turned inwardly, as indicated at 17, the bending-'operations are the-same as in the operation de- 'scribed `of Figs. 1 to 3, the substantially flat blank being rolled with sa-id'projections at the extreme edges thereof.

For channel sections like that shown in 4 Fig. 8, wherein the outer portions of the flanges are T-shaped, as indicated at 18, the first bending operation is by means of knuckles 10, as above described. For the second and final bending, triangular heads 19 arc substituted for heads 15, the same ,fitting the outside angle of the T head and thereby securing the hold necessary to -move the flange to its final ositionf."` It will be understood that the heads are rolled on the blank, the same as projections 17 of' Figs. 6 and 7.

For channels having outwrdlyv disposed extremities 20, asin Figs. 9 and 10, the lank is bent up around a trough-like die 21, su1t ably sup orted above the roll table,the die having t e laterally projecting wings 22.

, This is designed for use where the extensions 20 are too wide to be rolled in finished relation with the flanges. Hence the blank is substantially flat, being provided with the downward angular projections 3 for the main or lower corners, and upward projec tions 23 which define the corners at the inner edges of extensions 20. The first bending operation is accomplished by knuckles 10` as above described, and the second and final grinding with heads 19, like those shown in In producing the M or W section of Fig. l2, a die 24 oflVl-form is suitably support-cd above the roll table. The blank is rolled with a central downward angular extension 25 and two similar corner defining upward extensions 2G. rl`he bending elements consist oftwo vertically movable angular heads 27 which when raised carry the blank up Wardly into the cavities of the die, placing the corners of the blank in or around the corners of the die and giving perfect form to the finished section. i

rllhe foregoing are only some of the numerous sectitnal shapes produced by practicing the invention. In each, it will be seen that relatively wide flanges are produced by an operation which is substantially a continuation of the rolling, the bending mechanism being simply an extension of the rolling mechanism and so arrangeil as to receive the blanks directly from rolls so that the metal is bent into shape while still hot.-

I claim l. The method of producing a section with a web and deep flanges, consisting in rolling the web and flanges each into its final formsave distortions adjacent the junctures thereof-and in such relation that the roll pass is shallower than the finished section, and then eliminating the distortions and placing the web and flanges in finished angular relation andeach in finished form.

2. The method of producing a. section with a web and deep flanges, consisting in rolling a blankwith deep flange members Vso disposed to the web due to curved por# tions adjacent their juncture that the blank is produced by a relatively shallow roll pass wherein the metal of the web is not injured by strains resulting from varying speeds of a deep roll pass, and then placing the web and flanges in finished relation by straightening said curved portions.V f

3. The method of roducing sections with deep flanges, consisting in rolling a blank with web and flange members with opposite i angles and llets at the junctures o the web nent angles and corresponding fillet depressions at the junctures of the web and flanges, the web and flanges bemg 111 such relat1on due to distorted portions adjacent the juncture of the web and flanges that they are produced in a.v roll pass shallower than the finished section, and then applying bending pressure so that the web and flanges will assume proper position.

5. The method of producing sections with deep flanges, consisting in rolling a. blank with web and flange members with right angle projections at the unctures of the web and flanges, the web and flanges being in such relation due to distortions adjacent their junctures that the blank is produced in a roll pass shallower than the finished section, and then removing the distortions by bending the blank until the corner of the angle is brought to the plane of the web member.

6. The method of producing deep flange sections, consisting in rolling a blank with web-and flange members with' angular projections at one face of the blank, the web member merging into the inner branches of the projections andthe flange members extending from the outer branches thereof, the web and flange members being in such relation due to distortion near the angular projection that the blank is produced in a roll pass shallower than the finished section, and then placing the web and each of the flange members in final relation by bending the distorted portion with the angular projections forming the corners of the finished the web and flange members being in such relation that the blank is produced in a roll pass shallower than the finished section, and

then straightening out the curves connecting the web member and the right angle probetween the web and flange members and to prov1de the finished section with rlght angle corners.

8. The method of producing deepl flange'7 and flanges, the web and flanges eing in l sections, consisting in rolling a blank with such relation due to dlstortlonsl adjacent |.web and flange members and with angular their juncture that the bla-nk 1s produced in l projections at one face of the blank, the

-- jections for increasing the angular relation blank being curved at the junctures of the 4Connecting the Hange members andthe angu- Web and flange members with the angular lar projections. 10 projections, the web and flange lmembers be- In testimony whereof I affix my signature ing in such relation that the blank is prol in presence of two Witnesses.

duced in a roll pass shallower than the GEORGEH. EVERSON. finished section, and subsequently straight- Witnesses:

ening the curves connecting the web mem- J. M. NESBIT,

ber and said projections and the curves W. M. SIMMONS.