US817345A - Method of rolling angles. - Google Patents

Description

E. E. SLICK. METHOD OF ROLLING ANGLES.

APPLICATION FILED JULY 22, 1903.

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. L a fi i I WITNIQSEfi RNWEMTUW PAT-ENTED APR. 10, woe.

E. E. SLICK. METHOD OF ROLLING ANGLES.

APPLICATION FILED JULY 22, 19-03.

nlivzmon PATENTED APR. 10,1906

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E. E. SLICK. METHOD OF ROLLING ANGLES.

APPLIOATION FILED JULY 22, 1903,

WW'WWE$SEEE INVENTOR PATENTED'APR. 10, 1906.

3 SHEETS-SHEET 3.

the metal.

rrnir a e rarer rrieia EDWlN SLICK, OF PITTSBURG, PENNSYLYANlA. i

no. erases.

Specification ofLetters Patent.

lEatented April 10, 1906.

Anplioation filed m 22, 1903. Serial No. 168.625.

To all whom it may concern: I Be it known that I, EDWIN E. SLICK, of

lPittsburg, Allegheny county, Pennsylvania,

have invented a new and useful Method of Rolling Angles, of which the following is a full, clear, and. exact description, reference being had to the accompanying drawings,

due to the difficulty of adjusting 'the rolls to different tl1lOlEl18SS6S of product without making the angles uneven or straining the metal. l't is also designed. to fill the back or point of the angle and to provide for chang- .ing the respective widths of the legs.

llereto'lore in the rolling of anglesin a seof separate passes the legs have been formed in curved or dished shape or with angular bends before the final passes, which. shaped the angle to the desired form. In adjusting the rolls of the different passes in such cases for different thicknesses of the angles the shifting of the roll will move some parts of the pass a greater distance than others, measured at right angles to the different parts of the blank, and cause a strain upon the angle-legs, which will inj ure and pull away This also prevents proper filling oi the pass and gives irregular sections. it has also been proposed to roll such a section in a universal mill; but in this case the contour of the opposite sides of the pass in the opposil'ig faces of the rolls is the same throughout the reduction, and the point or back of the angle will not fill out properly, as the metal cannot be proportioned correctly in the part which forms this back, owing to the fact that the movement of one roll toward the other reduces the crosssectional area of the space occupied by the flange portions proportionately more than that of the space occupied by the ribbed portions, since the thickness of the flange portions is less thant-hat ol' the rib portion. 1 overcome thesedillicultios by using rolls adjustable toward and from each other and having a succession of separate reducin g-passes which are shaped to form the legs with all portions of each leg lying in the same fiat plane and with are the next passes.

a. projection which is outside this )lane to constitute the back of the angle, eac 1 successive pass having substantially the same width, but a lesser cross-sectional area, than the preceding, and the contour designed to preserve approximately the same proportional areas in the flange-forming and rib-forining sections of the passes throughout. By utilizing adjustable rolls having passes oi this character before bending the legs to an le form the rolls may be adjusted to roll ang e-blanks oi diflerent thicknesses because the changes in the amount of separation of the rolls changes the thickness of the nietalthe same amount for all parts of the legs, since these parts are in the same flat plane, and hence avoids the pulling and injuring of the inetal and irreguarity of shape.

Thg invention also consists in using a peculiar system: of edging-passes and bo epasses during the rolling, as hereinafter described.

in the 'drawings, Figs. 1 and 2"show the passes 1 and 2 for the billet from which the angle is formed. lln Figs. 3 and l, 3 and 4 In pass 3 a projection b is formed on one face of the billet to constitute the corner or back of the angle, the legs of the angle lying in the same plane. in pass 4 the cross-sectional area of both flanges or legs and the ridge or projection l) are reduced, while the contour of the projection is developed, the width of the blank remaining substantially the same. Thenext pass 5 of Fig. 5 is an ed ing-pass, and I show several of these passes '01 forming angles" of different widths. The edging pass fixesthe width of the blank and enables me to roll differentsized angles from the same-sized bloom. It further corrects variations in the bloom and gives an angle of uniform width. It is only necessary to give one edgingpass to the blank, and thus fix the width, although I may use more than one ed 'iug-pass, il' desired. In the next pass 6 t ere 1s a further development of the corner I) and reduction in area thereof, and a thinning of the flanges or legs, and in the next pass 7 agroove 6 is prei erably rolled opposite to the projection in or der to provide for easier bending of the legs. In the pass 8 the legs of the anglewhich were hitherto in the same llat plane are bent into angular form, and in the final pass 9 the legs are bent into final form and the angle fin i. in

passes 1, 2, 3, and 4 are open passes. For a large variation in the thickness of the angle to be rolled I preferably replace the rolls forming passes 7 and 8 by other sets of rolls,

but do not need to change the rolls of pass 9,

as these can be adjusted for the different thicknesses. Forsmall variations the rolls for the three passes 7, 8, and 9 may remain the same and be adjusted. For rolling dill'erent to widths of angles't-he rolls forming passes '7, 8, and 9 will be changed As the legs of the angle lie in the same flat plane until the bending-passes are reached,

the rolls may be adjusted to vary the thickness without causing distortion and pulling of the metal. The passes being separate and distinct from each other are each proportioned so that themetal will be properly dis tributed to fill the back or corner of the angle.

I have shown the angle as being formed of legs of different widths; but by using guides 10 10, which are adjustably secured to a transverse bar 11 by means of bolts 12, the

position of the corner orback may be varied,

so. as to produce an angle having legs of the same width or any relative width desired.

This adjusting of the guides will shift the point at which the corner or projection is made. l

The passes may be formed in any desira ble type of mill; but I prefer to use a continuous mill for this purpose- I show such a mill in Fig. 10 of the drawings, wherein C, D, E, F, G, H, I, J, and K are successive stands of rolls arranged in tandem and made adjustable to vary the thickness of the metal. The passes are all in line with each other, so that the billet travels forward continuously without shifting sidewise or handling.

0 In carrying out my process the metal travels through the successive passes, such shown in the drawings, whereby I initially form the metal with a projection outside the plane of the legs and form these legs with the 5 parts of each leg and preferably of both legs in the same flat plane. I then edge the metal and then pass it through the closed boxpasses with the legs still in the sameplane and then bend the legs in a plurality of passes 5o to the final desired form. I change the rela ti ve widths of the legs by adjusting the guides and by shifting the point where the projection is made for the back of the angle.

The advantages of my invention resultfrom the regular filling out of the shape, the absence of straining and pulling of the metal, and the rapidity of operation. A large output is obtained at low cost and different thicknesses and Widths of angle-lcgs may be easily made. l

By the words substantially flat or in the same flat plane I do not intend to re strict myself to form a face which is absolutely in the same horizontal plane, but to differentiate from the dishing or bending of the angle-leg heretofore used during the re ducing rolling of the angle.

The apparatus may be widely varied, and the line of the lower face may vary somewhat so long as all parts of the same leg lie in the same general plane. The forming of the groove opposite the projection may or may not be done; but I prefer it, as it is an advantage in holding securely in place the, angle during bendin g.

The apparatus corresponding'to the method set forth in this case is claimed in my application filed August 21, 1902, Serial No. 120,588.

I claim- 1. The method of rolling angles, consisting in forming a flat blank having a ridge on one side, and lateral legs or flanges, reducing the thickness of the blank and the cross-sectional area of the ridge and flange portions by passing the blank between adjustable rolls having separate passes shaped to substantially preserve the proportionate areas of the ridge and flange portions and maintain the flanges in substantially the same plane, then edgin this flat blank to fix its width, and then bending the blank into angle form along the line opposite to the ridge, whereby angles of different thicknesses and widths may be produced without changing the roughing-rolls,

substantially as described.

2. The method of rolling angles of diflerent thicknesses, consisting in first forming a flat blank having a ridge on one side and lateral legs or flanges, reducing the thickness of the blank and the cross-sectional area of the ridge and flange portions by passing the blank between adjustable rolls having passes shaped to preserve the proportionate areas of the ridge and flange portions and to maintain the flanges in substantially th same plane, adjusting the rolls and repeating the operation upon other blanks, and. finally bending the blanks into angle form along the line opposite' the ridge, whereby angles-of difl'erent thickness may be produced by the same roughing-rolls; substantially as described.

3. The method of rolling angles of different thicknesses, consisting in first forming a fiat blank having a ridge on one side, and lateral legs or flanges, reducing the thickness of the blank and the cross-sectional area of the ridge and flange portions by passing the blank between adjustable rolls having passes shaped to preserve the proportionate areas of the ridge and flange portions and to maintain the. flanges in substantially the same plane, adjusting the rolls and repeating the operation upon other blanks, edging the blank to fix its width, and finally bending the blanks into angle form along the line opposite-the ridge, whereby angles of different thickness may be produced by the same roughing-rolls," substan tially as described.

4:. The method of rolling angles, consisting through. 2!, roll pass 01' passes, whereby angles blank, and then bending it inio angle. 501111; 01 (llfl'crent tl'licknessos and wulths may be sullst ultmlly as LlQSC-IlbQLl.

In testimony whereof l have produced without changing the roughing-f 1 my hand. i

10 hereunto sel rolls; substantially as described.

13. The method of rolling angles, consisting in forming & lint blank having a ridge with flat legs or flanges in open passes, edging the flat blank to fix its Width, then reducing the l E. E. SLKK. \Vitnesses JOHN MILLER, H M. Comvm.

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