US2087831A

US2087831A - Die rolling

Info

Publication number: US2087831A
Application number: US56828A
Authority: US
Inventors: David P Anderson
Original assignee: Individual
Current assignee: Individual
Priority date: 1935-12-30
Filing date: 1935-12-30
Publication date: 1937-07-20
Anticipated expiration: 1954-07-20

Description

JulyZO, 1937. D. P. ANDERSON DIE ROLLING FiledDec. 30, 1935 2 Sheets-Sheet 1 July 20, 1937. ANDERSON 2,087,831

DIE ROLLING Filed Dec. 30, 1935 2 Sheets-Sheet 2 J4 Tin:

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Patented July 20, 1937 UNITED STATES PATENT OFFICE 2,087,831 DIE ROLLING David 4P. Anderson, Pittsburgh, Pa. Application December 30, 1935, Serial No. 56,828

4 Claims.

This invention relates to die-rolling, and more particularly the adjustment of the rolling bodies with respect to each other.

In dimrolling operations it is necessary to obtain accurate angular adjustment of the rolls relative to each other in order to properly match the configurations of the matrices cut in the periphery of the rolls. Uniform angular rotation of the rolls is effected by driving through mated gears or pinions.

Heretofore, the angular or rotative adjustment referred to was accomplished through adjustable couplings incorporated in the driving spindles, or by other expedients equally as inefiicient, These devices of the prior art necessitate the stopping of the mill and, in addition, are inaccurate.

It is among the objects of the present invention to provide a novel adjusting means for die-rolls which is not only accurate but is operative when the mill is running.

Another object is to provide a device of the class described which is cheap and easy to install and operate.

The foregoing and further objects will be apparent after referring to the drawings, in which:

Figure 1 is a side elevation of one form of the device of the invention, and is shown partly in section.

Figure 2 is a sectional view on the line II-II of Figure 1.

Figure 3 is. a view similar to Figure 1 but disclosing a modification.

Figure 4 is a sectional view on the line IV-IV of Figure 3.

Referring more particularly to the drawings, the numeral 2 designates a mill stand which supports a pair of rotatable mandrels 3. Each of these rotatable mandrels 3 carries a die-roll 4. A pinion stand 6 is disposed adjacent the-mill stand 2 and supports a pair of upper and lower shafts 8 and 9, respectively, which are connected to the rotatable mandrels 3 by universal spindles I0. I

The bottom of the pinion stand 6 is provided with ways 12 in which there is slidably mounted a plate 13. v

The lower shaft 9,,which is supported by the Y pinion stand 6, carriesa pair of elongated keys 14 on which there is slidably mounted a pinion 15 having gear teeth of the single-helical type. This pinion I5 is contacted'on its sides by a pair of forks l6 which are mounted on the plate l3. The upper shaft 8, which is supported by the 5 pinion stand 6, carries a wide pinion 18 having on. 80-24) I From the foregoing it will be seen that the movement of the plate 13 in the ways l2 will effect a very minute and accurate relative angular or rotative adjustment of the rotatable mandrels 3 and accordingly the die-rolls 4. For this purpose, the plate l3 carries a nut 20 in which there is disposed an elongated screw 21. This elongated screw 21 is coupled, as at 22, to a suitably controlled reversing motor 23.

Preferably, although not necessarily, the motivation of the rotatable mandrels 3 is effected through the upper shaft 8 of the pinion stand 6, as, for example, by connection to a suitable power-driven shaft 25.

Referring to Figures 3 and 4 of the drawings,

I have disclosed a modified form of the apparatus of the invention. According to this modification, a separate pinion stand is not used, but the adjusting means and drive-shaft applied directly to the roll stand. The drive-shaft is indicated at as being connected to one end of the lower mandrel 3. The other end of this mandrel, and the same end of its counterpart, are extended as shown at 32 and 33, respectively. The extension 33 of the upper mandrel 3 carries a'wide pinion 34 of the previously referred to single-helical type. The extension 32 of the lower mandrel carries a pair of elongated keys 35 on which there is slidably mounteda relatively narrow pinion 31 also of the "single-helical type. This narrow pinion 31 carries an integral bearing hub 38.

A bed 40 is disposed beneath the extended end 32 of the lower mandrel 3 and provides a pair of ways 41 in which there is slidably mounted a plate 42. This plate 42 carries an upwardly extending fork 43 which embraces the lower half of the integral bearing hub 38 of the narrow pinion 31. A nut 45 is mounted on the plate 42 and has disposed therein an elongated screw 46 which is journaled, as at 41, on the bed 40. The,

end of the elongated screw 46 which is remote from the plate 42 is provided with a handwheel 48 for enabling its easy rotation.

While I have shown and described several specific embodiments of my invention, it will be understood that I do not wish to be limited exactly thereto, since various modifications may be made without departing from the scope of my invention, as defined by the following claims.

I claim:

1. In a die rolling mill the combination of die rolls,-means for driving said die rolls, helical gears connected to and adapted to rotate with said die rolls, said helical gears adapted to intermesh, means for slidably supporting one of said helical gears on said connection with said die roll and means for moving one of said intermeshing gears axially with respect to the other helical gear so as to efiect a relative circumferential movement of one of said die rolls with respect to the other die roll without interrupting the transmission of power to said driving means.

2. In combination with a pair of die rolls, driving means for said die rolls, means for adjusting the relative positions of said die rolls with respect to each other comprising, a support, shafts carried by said support, helical gears rotatably mounted on said shafts, guideways on said support, a plate slidable in said guideways, said plate having upwardly extending arms adapted to engage one of said helical gears, an opening in said plate, a nut carried by said plate and provided withan internally threaded opening coinciding with the opening in said plate, a screw-threaded rod extending through said internally threaded opening in said nut and the opening in said plate and means adapted to rotate said rod for moving said slidable plate whereby one of said gears is moved axially with respect to the other helical gear to effect a circumferential movement of one of said die rolls with respect to the other die roll.

3. In a die rolling mill the combination of die rolls, means for driving said die rolls, helical gears connected to and adapted to rotate with said die rolls, said helical gears adapted to intermesh, one of said helical gears provided with an integral hub extending laterally therefrom, means for slidably supporting one of said helical gears on said connection with said die roll and means for moving one of said intermeshing gears axially with respect to the other helical gear so as to effect a relative circumferential movement of one of said die rolls with respect to the other die roll without interrupting the transmission of power to said driving means.

4. In a die rolling mill, the combination of die rolls, means for driving said die rolls, helical gears connected to and adapted to rotate with said die rolls, said helical gears adapted to intermesh, one of said helical gears provided with an integral hub extending laterally therefrom, means for slidably supporting one of said helical gears on said connection with said die roll and means for moving one of said intermeshing gears axially with respect to the other helical gear so as to efiect a relative circumferential movement of one of said die rolls with respect to the other die roll without interrupting the transmission of power to said driving means, and said last mentioned means including a support, guideways on said support, a plate slidable in said guideways, said plate provided with an upwardly extending forked portion adapted to engage said integral laterally extending hub and a thread rod adapted to pass through said plate and journalled in said support.

DAVID P. ANDERSON.