US1302497A - Method of rolling flanged sections. - Google Patents

Description

G. H. HARBOUR. vMETHOD 0F ROLLING FLANGED SECTIONS.

APPLICATION FILED MAR. 20. 19l6.

Patented May 6, 1919.

GEORGE H. BARBOUR, 0F PITTSBURGH, PENNSYLVANIA.

METHOD OF ROLLING FLANGED SECTIONS.

Specification of Letters Patent.

Patented May 6, 1919.

Continuation in part of applications Serial No. 527,818, filed November 13, 1909, and Serial No. 772,092, filed June 6, 1913. This application filed March 20, 1916. Serial No. 85,267.

To all whom it may concern:

Be it known that I, GEORGE H. BARBOUR, a citizen of the United States, residing at Pittsburgh, Allegheny county, Pennsylvania, have invented a new and useful Method of Rolling Flanged Sect-ions, of which the following is a. full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a plan viewof one form of rolls for carrying out my invention, which I have shown without. the usual housings and adjusting mechanism.

Figs. 1 1 and 1 are sectional views, on the lines a, a, b, b, and c, c, of Fig. 1, respectively,

Fig. 2 is a sectional View, on the line IIII of Fig. 1.

Fig. 3 is a similar view, on the line IIIIII of Fig. 1.

Fig. 1 is a sectional view through a. stand of modified form of rolls of. a. three-high mill.

Fig. 5 is a sectional view of portions of a pair of rolls of modified form, and

Fig. 6 is a simlar view of other forms of rolls. v This invention relates to an improved method of rolling flanged sections, and forms a continuation in part of my application, Serial No. 772,092, filed June 6, 1913, and which application was a continuation in part of my application, Serial No. 527,818,

filed November 13-, 1909, patented November The object of my invention is to provide a new and improved method whereby flanged sections can be rolled in a three-high mill, or several sets of rolls, and in which the pass between one set of rolls is a counterpart of the pass between another set of rolls, with the exception that the flange-forming portions in one pass are the reverse of the flange-forming portions in the other pass; the rolls being so arranged that one roll is adapted to be adjusted relatively to the other roll so as to vary the size of the pass, without varying the contour thereof.

The method may be carried out in a threehigh mill, or may be carried out in a mill having a plurality of sets of rolls arranged in tandem, so that the blank may be simul-taneously shaped between several sets of rolls.

The precise nature of my invention will be best understood by reference to the accompanying drawings, which will now be described, it being premised, however, that various changes may be made in the details of construction and general arrangement of the parts without departing from the spirit and scope of my invention as defined in the appended claims.

Referring to Figs. 1 to 3 of the drawings, in which I have shown rolls such as disclosed in my previously mentioned applications, the reference character 2 designates the upper roll, and 3 the lower roll of the first set of rolls. The upper roll 2 is provided with spindles 1, while the lower roll is provided with spindles 5 which are arranged to be seated in bearings in housings such as described in the former applications. The second set of rolls comprises an upper roll 6 and a lower roll 7, which are also provided with spindles 8 and 9, respectively. The second set of rolls is a counterpart of the first set of rolls, with the exception that the rolls are placed in reverse positions, as clearly indicated in Figs. 2 and 3. Slidably mounted on the roll 2 are flange forming collars 10, which are arranged to be adjusted toward each other by mechanism such as disclosed in the previously mentioned applications, while the roll 7 is provided with similar collars 11.

In rolling a section by means of tandem rolls such as just described, the blank is first passed between the rolls 2 and 3, and while passing between these rolls the web 12 of a section such as shown in Figs. 1, 1 and 1 is reduced in thickness, while the upper flanges 14 are maintained in lines approximately perpendicular to the axes of the rolls and the web, and which flanges are engaged by dead portions of the pass. The flanges 13 of the section while passing between the rolls 2 and 3 are flared outwardly and reduced in thickness to form a section such as shown in Fig. 1 The section is then engaged by the rolls 6 and 7 and the collars 11, and while engaged by these rolls the positions of the flanges 13 and 14 will be reversed as indicated in Fig. 1, and while passing between the rolls and collars the flanges 14; and the web 12 will be reduced in thickness; while the flanges 13 will pass through thedead portions of the pass with out materially reducing their thickness.

The section may be passed through the two passes the proper number of times, and the rolls and collars are adjusted after each pass, and after the section has been rolled to the proper gage. the flared flanges are straightened in a manner described in the previous applications.

It will readily be understood by those familiar with the art that if there is any tendency to buckle or stretch the blank between the two sets of rolls either set of the rolls can be adjusted to overcome this difficulty.

In the foregoing description I have described two sets of rolls in tandem, but it will readily be understood that the same operation maybe carried out in a three-high mill such as disclosed in the previously mentioned applications, or as shown in Fig. 4 of the drawings.

In Fig. i I have shown a three-high mill comprising rolls 15, 16 and 17. These rolls are provided with flange-forming collars 18, 19 and 20, respectively, which are fixedly secured thereto. The collars 18 and 20 engage a flange 21 on the central roll 16, while the collar 19 on the central roll engages collars 2:2 and 23 on the rolls 15 and 17, respectively. The rolls 15, 16 and 17 are also provided with collars 2t, 25 and 26, respectively, which are arranged to form the web portions and the inner walls of the flange passes between the various rolls. The pass between the rolls 15 and 16 is a counterpart of the pass between the rolls 16 and 17, with the exception that the dead portions 27 and live portions 28 of the pass between rolls 15 and 16 are reversed with. relation to the same portions of the pass between the rolls 16 and 17.

When rolling a. section in a mill such as just described, the section is firstpassed in. one direction between the upper and cent ral rolls, the web and flanges .in the live portions of the pass being reduced, while the other flanges are maintained in lines approximately perpendicular to the axes of the rolls. and when returned through the )ass between rolls 16 and 17 the. positions of the flanges are reversed and the flanges which were previously in the dead portions are em agcd by the live portions in this pass. so that. these flanges, together with the web, will be reduced. This operation is carried out a predetermined nuinber of times while the rolls are adjusted between successive passes to reduce the gage of the section, and after the predctcrlnincd gage has been reached the inclined flanges may be straightened in any desired manner.

In Fig. 5 I have shown another modified form of rolls, in which two movable collars 29 are mounted on a roll 30, while the companion roll 31 is provided with annular flanges 32, having angular faces adapted to engage angular faces on the collars 29 to move them toward each other when the rolls 31 and 30 are adjusted toward each other. In this construction the form of the pass is similar to the form of the pass shown in the rolls in Figs. 1 to 3.

In Fig. 6 I have shown still another modified form, in which the rolls 33 and 34 are provided with annular flanges 35 and 36, respectively, which flanges are provided 'with angular faces which are adapted to engage angular faces on movable collars 37 and 38 on the rolls 33 and 31-, respectively. Mounted on the rolls 33 and 3t between the movable collars and the flanges thereon, are collars 39 and 40, respectively, the pass between the rolls being formed between thevarious collars on the two rolls. In this construction the dead passes for the flanges are perpendicular to the axes of the rolls, while the live flanges are at an angle to the aXes of the rolls and the dead portions of the pass, the

web portion of the pass also lying at an angle to the axes of the rolls and at an angle to the other portions of the pass.

Those' familiar with the art will readily understand that the entire process can be carried out in one pass between a single pair of rolls simply by reversing the blank at each passage between the rolls; that various modifications may be made in the rolls for carrying out my invention, collars being splined to or integral with the spindles to suit the conditions, or the proper collars left free to rotate on the spindles for the purpose of reducing to a minimum the tearing action of the rolls on the extreme fibers of the blank; it being essential, however, that the flange portions of the blank that occupy the dead grooves of'the pass be perpendicular or approximately perpendicular to the axes of the rolls and the flange portions of the blank that occupy the live grooves of the pass be at an angle to the axes of the rolls and at an angle to the dead flange grooves of the pass; also that the widths of the flange grooves as Well as the thickness of the web forming portions may be capable of adjustment.

It will be observed from the foregoing that. my invention consists essentially in providing a blank having a Web with flanges at opposite sides of the web, and then s11bjecting said blank to series of reducing operations in which substantially its exact concave contours are transposed and its opposite flanges are alternately reduced in thickness. By concave contours, I mean the outline describing 'one side of the Web, the inside surfaces of the flanges at that side, and the angles connecting the surface of the wgb to the surfaces of the flanges at that s1 e.

The advantages of my invention result from the provision of a method of falling whereby I am enabled to complete the reduction or rolling of I or H beam blanks in a pass between a single pair of rolls, by reversing the rotation of the rolls to each pass of the work-piece, reversing the workpiece and adjusting the rolls and collars toward each other, and then again passing the work-piece between the rolls to again reduce the thickness of the flanges worked on as well as the web or in a duplication of said pass between the rolls of a three-high mill, or continuously and simultaneously in repetitions of the same pass between two or more pairs of rolls mounted in tandem.

I claim:

1. lln the art of making flanged shapes, the method which consists, in providing a blank having a web and flanges at opposite sides of the web and subjecting said blank to a series of reducing operations in which the height of the web between the flanges is maintained constant, but the opposite flanges are alternately reduced in thickness, substantially as described.

2. In the art of making flanged shapes, the method which consists in providing a blank having a web and flanges at opposite sides of its web, and subjecting said blank to a series of reducing operations in which substantially the exact concave contours are transposed in successive operations and the opposite flanges of the blank are alternately reduced in thickness without varying the height of the web between the flanges by 3. In the art of making flanged shapes,

the method which consists in providing a blank having a web and flanges at opposite sides of the web, and subjecting said blank to a series of reducing operations in which it is reduced, in height and in which substantially its exact concave contours are transposed in successive operations and its opposite flanges are alternately reduced in thickness Without varying the height of the web between the flanges by said reducing operations, substantially as described.

4. In the art of making flanged shapes, the method which consists in providing a blank having a web and flanges at opposite sides of the web, and subjecting said blank to a series of reducing operations in which the concave contours are transposed in successive operations and its opposite flanges alternately reduced in thickness while maintaining the outer faces of all the flanges par. allel to each other and at an oblique angle to the web without varying the height of the web between the flanges by said reducing operations, substantially as described.

In testimony whereof, I have hereunto set my hand.

enonen n. naneoun Witnesses:

GEO. B. BLEMLNG, W. C. Lrom

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