US1228433A - Rolling-mill. - Google Patents

Description

C. W. HAWTHORNE.

ROLLING MILL.

APPLICATION FILED MAR;16.|916.

2 SHEETS-SHEET I.

I 32 u v 29 50 9 I 7 8 l I as y 35 54 a4 7 a5 as 57 a7 #36 4 F 5- zs a8 so 3 y- 3/\ I 732 7 35 A "q; a5 35 J 4 3 y L um/Wm m: NORRIS PETERS C0,.PHOhw-Ll1na,WASNINGTOM u c.

C. W. HAWTHORNE.

ROLLING MILL.

APPLICATLOH mm MAR. 1.6, 1926."

1,228,433. Patented June 5, 1917.

2 SHEETS-SHEET 2- llW/E/V TOR A TTORA/EY CHARLES HAWTHORNE, 0F HAMILTON, ONTARIO, CANADA.

ROLLING-MILL.

Specification of Letters Patent.

Patented June 5, 1917.

Application filed March 16, 1916. Serial No. 84,578.

To all whom it may concern:

Be it known that I, CHARLEs W. HAW- TI-IoRNE, a citizen of the United States, and a resident of Hamilton, Ontario, Canada, have invented new and useful Improvements in Rolling-Mills, ofwhich the following is a specification.

The invention relates to a process and apparatus for rolling metal bars and shapes, and more particularly to a mechanism for simultaneously rolling the four sides of a bar or shape by a single roll pass.

The objects andadvantages of the invention will be set forth in part hereinafter,

and in part will be obvious herefrom.

The invention consists in the novel parts, combinations, arrangements, steps, processes and improvements herein shown and described.

The accompanying drawings, referred to herein and constituting a part hereof serve to illustrate the principles of the invention, both as to the process and as to an apparatus by which the process may be practised or carried out, said drawing serving in connec' tion with the description to illustrate the principles of the invention.

Of the drawings:

Figure 1 shows a stand of rolls, in end elevation;

Fig. 2 is a front elevation of a roll pass showing my invention for simultaneously rolling the four sides of a bar;

Fig. 3 is a view similar to Fig. 2.but showing the simultaneous rolling of all parts of an I-beam;

Fig. i is a fragmentary elevation of a roll with the slip device;

Fig. 5 is a fragmentary horizontal section of another form thereof Fig. 6 is a fragmentary vertical section through the pass of rolls like Fig. 5; and

Fig. 7 is a fragmentary, horizontal section of a somewhat different form.

Referring to the accompanying drawings, illustrating by way of example the practice of my process and an apparatus suitable for carrying it out, the housing for a stand of rolls in indicated by 1, said housing comrising or being supported by any suitable ldase 2. The lower roll 3 has its journals or necks 4 and 5 supported in suitable journal blocks or boxes 6, mounted between the housing posts 1. The upper roll 7 has its necks or journals 8 and 9 j ournaled in slidand 18. Screw-threaded rods 19 have their lower ends bearing upon the boxes 10, said rods 19 passing through screw-threaded apertures in the respective housing caps 16. Fixed to the screwthreaded rods 19, respectively, by collars 25, are yokes 20. The rods 14: and 15 at either end of the housing pass through the corresponding yoke 19 and are supported and spring-pressed upwardly, respectively, by springs 21 and 22, held under compression, respectively, by nuts 23 and 24. The screw rods19 are rotated in a suitable manner, as by a worm mechanism 26, to move the upper roll upwardly or downwardly to regulate the size of the roll pass.

Referring now more particularly to Fig. 2 of the drawings, the roll pass is shown with the roll 7 having a central portion 28, and with beveled surfaces 29 and 30 extending outwardly therefrom at either side, and with enlarged cylindrical portions 31 and 32 at either side of the beveled portions. The roll 3 is shown of like construction and arrangement as that just described for roll 7 and is correspondingly numbered.

At either side are rolls 33, shown in elevation in Fig. 1 and in section in Figs. 2 and 3. The peripheries 34 of rolls 33 constitute the rolling surfaces. The rolls or disks 33 have on their sides inwardly beveled surfaces 35 and 36, which are preferably of the same angle of inclination as the beveled surfaces 29 and"30 on the rolls 3 and 7. The disks have also preferably a flat inner or central portion 37. The rolls 33 have their central depressed parts of sufficient diameter that the respective cylindrical portions 31 and 32 of rolls 3 and 7 fit or. are cleared therewithin, the beveled surfaces 35 and 36 of the side rolls engaging with the respective beveled surfaces 29 and 30 on the horizontal rolls, the four rolls interlocking and providing simultaneous rolling contact on the four sides of the bar at the same transverse place or plane of the bar.

As the billet or bar a; is put through the 3 and 7, which rotate about their horizontal axes, and the bar engages likewise with the rolling surfaces 34 of the rolls 33 which rotate about vertical axes. There is thus secured or effected a four sided draft on the bar or billet, and a consequent rolling or reduction on all sides at once on a single passage through a single stand of rolls.

The rolls 3 and 7 may be driven by power in any usual way. The rolls 33 thus effect the proper rolling or reducing action on the bar or billet, as well as the rolls 3 and 7 in the single pass through. The rolls 33 may be driven by their frictional contact with the rolls 3 and? and they may be driven in part by the direction of the bar or billet as it is pulled through by rolls 3 and 7. As the bar 00 goes through the pass, it has .rolling pressure traveling in the proper direction upon all four sides thereof.

In Fig. 3 of the drawings the disks 32 are exemplified of such shape as is required to roll shapes such as I-beams, channels, etc., in single passes through the rolls, the rolls 33 rolling the web and inner sides of the flanges, and the rolls 3 and 7 rolling the outer sides and edges of the flanges.

By my invention there is a great saving of labor and time in rolling, and a better product is secured in rolling or in rerolling. The metal is of more compact texture, and

I surface or hair .cracks due to rolling and turning and rerolling are avoided, and in this one pass is secured by my invention the results of two successive passes according to the usual way of rolling.

In accordance with certain features of the invention, means are also provided which allow for difierence in' peripheral speed of the rolls and of the side disks, and for minimizing the wear between the rolls and the disks, and to transfer the wear back to other parts of the mechanism where it can be easily compensated or adjusted. Said means also make it possible to dress down the rolls and still retain the full length of frictional bearing between the rolls and the side disks. Said means also provide a horizontal or lateral positioning of the slip rings, or corresponding members, whereby the position of the pass may be changed or shifted along the rolls, and whereby the shape of the cross-section of the bars rolled may be changed if desired.

As embodied, the beveled surfaces on the rolls 3 and 7 (see Figs. 4 to 7) are carried on portions which are angularly movable, or are mechanically free to rotate relatively to the driven body of the respective rolls.

In Fig. 4 a simple form is shown in which the beveled surfaces 42 and 43 are carried on annular members 44 and 45, respectively, which riiembers are carried upon and about the body 47 of the roll. Back of the members 44 and 45, respectively, are wear rings 48 which abut, respectively, against shoulders 49 integral with or fast to the body of the roll.

In Figs. 5 and 6, the beveled parts 57 and 58, respectively, of the horizontal rolls are carried on annular collars 50 and 51. These collars have sleeves 52, preferably integral with the collar, encircling the roll body and at their rear they bear against cylindrical wear pieces 53, having, respectively, faces 54 abutting against the ends of the sleeves 52. The wear cylinders 53 are shown carried in the housing 1, being bushed about the roll neck in the housing,

To take up or equalize wear or to adjust the pass longitudinally of the roll, the wear cylinders 53 are positionable or adjustable by suitable means. As embodied nuts 56 are pocketed in recesses in the housing 1 and these nuts thread with bolts 55, the end of each bolt bearing on a flange 59 on the corresponding wear piece 53. The central cylindrical rolling surface of the respective horizontal rolls may be collars 65 held angularly fixed on the roll by a suitable key 66..

The beveled surfaces and the wear rings may thus be accurately moved and positioned along the body of the cylinder to take up wear, or to adjust the location of the pass.

At the same time, the beveled members 50 and 51 are mechanically free to rotate relatively to the driven body of the roll on which they are mounted, subject to the frictional forces generated during rolling, and thereby allowance is made for any difference in peripheral speed between the horizontal rolls and the side rolls or disks.

In Fig. 7 of the drawings, the structure just described is somewhat altered or elaborated. The wear rings or cylinders 60, corresponding to wear members 53, encircle the body of the roll 3. Rings 60 are held angularly from rotation and are positionable or adjustable longitudinally of the roll by means of bolts or screws 61 threaded into the housing 1, each bolt with its inner end projecting into a hole or recess in its wear ring 60. In this Fig. 7 the roll itself is also longitudinally positionable. For this purpose the roll neck 4 at each end of the roll is journaled in a bushing 62 carried in the housing 1. A screw bolt 63 is threaded in the housing 1, with its inner end abutting against a shoulder 64 in the corresponding What I claim as my invention and desire to secure by Letters Patent is 1. A metal rolling mill including in combination a pair of parallel driven, journaled rolls having beveled surfaces on their peripheries, a pair of parallel floating unmounted rolls axially perpendicular to the flrst-mentioned pair of rolls and having beveled surfaces on their sides, the beveled surfaces of the rolls being in interlocking contact.

2. A metal rolling mill including in combination a pair of driven, journaled parallel rolls, each having annular divergent beveled surfaces separated by a cylindrical surface, a pair of floating, unmounted discoidal rolls having their peripheries extending within the space between the beveled portions of the first-mentioned rolls, said discoidal rolls having annular inwardly beveled surfaces on their sides, the beveled surfaces on the four rolls interlocking.

3. A metal rolling mill including in combination a pair of opposed driven, journaled rolls for pressing and IOllillg' the bar in one direction, and a pair of opposed floating, unmounted rolls for pressing and rolling the bar in a perpendicular direction at the same transverse place in the bar, said rolls interlocking and having frictional contact with each other and means for compensating for wear of the rolls.

4. A metal rolling mill including in combination a pair of parallel driven, ournaled rolls having beveled surfaces on their peripheries, a pair of parallel floating, unmounted rolls axially perpendicular to the firstmentioned pair of rolls and having beveled surfaces on their sides, the beveled surfaces of the rolls being in contact and means on the driven, journaled rolls for compensating for wear of the rolls.

5. A metal rolling mill including in com bination a pair of parallel driven, journaled rolls having beveled surfaces on their peripheries, a pair of parallel floating, unmounted rolls axially perpendicular to the first-mentioned pair of rolls and having beveled surfaces on their sides, the beveled surfaces of the rolls being in contact, the por- Copies of this patent may be obtained for five cents each, by addressing the tions carrying the beveled surfaces of the driven journaled pair of rolls being angular%y movable relatively to the body of the rol s.

6. A metal rolling mill including in combination a pair of parallel driven, ournaled rolls, each having annular divergent beveled surfaces separated by a cylindrical surface, a pair of discoidal floating, unmounted rolls having their peripheries extending within the space between the beveled portions of the first-mentioned rolls, said discoidal rolls having annular inwardly beveled surfaces on their sides, the beveled surfaces on the four rolls interlocking, the portions carrying the beveled surfaces of the driven journaled pair of rolls beingangularly movable relatively to the body of the rolls.

7. A metal rolling mill including in combination a pair of opposed driven, journaled rolls for pressing and rolling the bar in one direction, and a pair of opposed floating, unmounted rolls for pressing and rolling the bar in a perpendicular direction at the same transverse place in the bar, and means for adjustin the pass longitudinally on the pair of driven, journaled rolls.

8. A metal rolling mill including in combination a pair of parallel driven, journaled rolls, each having annular divergent beveled surfaces separated by a cylindrical surface, a pair of discoidal floating, unmounted rolls having their peripheries extending within the space between the beveled portions of the first-mentioned rolls, said discoidal rolls having annular inwardly beveled surfaces on their sides, the beveled surfaces on the four interlocking, the beveled surfaces of the pair of driven, journaled rolls being on portions which are longitudinally adjustable relatively to the body of the roll.

In testimony whereof, I have name to this specification, two subscribing Witnesses.

CHARLES W. HAWTHORNE.

Witnesses:

GEORGE J. TonLIs, JOSEPH ALLMAN.

signed my in the presence of Commissioner of Patents,

Washington, I). G.

Images