US2899222A

US2899222A - Shaft end roll mounting

Info

Publication number: US2899222A
Authority: US
Publication date: 1959-08-11
Anticipated expiration: 1976-08-11

Description

J, L. F. Ross SHAFT END ROLL MOUNTING Aug. 11, 1959 2 Sheets-Sheet 1 Filed July 31. 1953 mg 3 2 N wN i .HYM: JX Q l ww m m \Am YE I .INVENTOR. JOHN L. F. R065 BY Mai/MM ATTO/QNEVU- Aug. 11, 1-959 J. F. 12055 g 2,899,222

' SHAFT END ROLL MOUNTING Filed July 31, 1953 2 Sheets-Sheet 2 INVENTOR. J OHN L f'. 3056 dwzwi HTTO PNEYS.

United States SHAFT END ROLL MOUNTING Application July 31, 1953, Serial No. 371,470

6 Claims. (Cl. 287-53) This invention relates as indicated to a novel shaft end roll mounting, and more particularly to means adapted adjustably to mount a forging roll of the outrigger type on the projecting end portion of the roll shaft.

Roll forging machines as disclosed in Criley Patent 2,130,069, for example, are well known in the art, ordinarily being arranged for one-cycle operation by means of control mechanism of the general type disclosed in Criley Patent 2,496,040. In some instances, the ends of the two roll shafts may be caused to project beyond the supporting stand in which they are journalled to carry additional opposed rolls thereon. Such outrigger rolls are generally intended for certain lighter forging operations although in some cases the machine may be designed with outrigger rolls only mounted on especially massive, well-supported shafts for heavier work.

Such outrigger rolls become heated after a short period of use and therefore expand, tending to loosen n the shafts. Various expedients have been adopted to accommodate this expansion, ordinarily a tapered sleeve interposed between the tapered end portion of the shaft and roll and adapted to be adjusted axially of the shaft. Of course, when one such roll is thus adjusted, this will ordinarily mean that the pass on such roll is shifted laterally out of register with the pass of the opposed roll and after the two rolls have been securely seated in their heated condition, it then becomes necessary to make a final adjustment properly to align the two rolls for the forging operation.

It is accordingly a principal object of my invention to provide shaft end roll mounting means adapted to facilitate accurate repositioning of the rolls while at the same time firmly seating the same.

Another object is to provide such roll mounting means which will at the same time permit the roll to be directly keyed to the shaft end portion to be driven thereby.

Still another object is to provide such roll mounting means which will facilitate removal and changing of the roll when desired.

Other objects of the invention will appear as the description proceeds.

To the accomplishment of the foregoing and related ends, said invention then comprises the features hereinafter fully described and particularly pointed out in the claims, the following description and the annexed drawing setting forth in detail certain illustrative embodiments cf the invention, these being indicative, however, of but a few of the various ways in which the principle of the invention may be employed.

In said annexed drawing:

Fig. 1 is an end view of a roll assembly in accordance with my invention showing the roll die and roll die retaining cap;

Fig. 2 is a longitudinal sectional view taken on the line 22 of Fig. 1;

atent 0 ice Fig. 3 is a longitudinal sectional view taken on the line 3-3 on Fig. 1; and

Fig. 4 is a side view of the adjusting sleeve adapted to be interposed between the roll die and shaft end.

Referring now more particularly to such drawing, the embodiment of my invention there illustrated comprises the usual roll shaft 1 having a tapered end portion 2 provided with a relatively wide and strong sunken key 3 secured thereto by means of

cap screws

4 and 5.

The roll die 6 has a straight cylindrical bore 7 making a sliding fit on the cylindrical outer surface 8 of split die sleeve 9 and such bore is provided with a keyway 10 adapted to fit and bear against the respective sides of key 3. Sleeve 9 has a tapered internal bore 11 adapted to fit on the tapered end 2 of shaft 1 and such sleeve is split at 12 to permit a degree of axial adjustment relative to such tapered shaft end. Such split 12 widens to a relatively wide gap 13 extending to the inner end of the sleeve to accommodate key 3 passing therethrough. Such gap will ordinarily be wide enough to afford key 3 a degree of clearance. Sleeve 9 has a radially outwardly projecting flange 14 at its outer end.

On the outer side of roll die 6 are a number of tapped holes for cap screws 15, 16 and 17 which pass through holes in flange 14 of die sleeve 9 and die retainer cap 18 to secure these members in assembled relation. Cap 18 has an inner cylindrical portion fitting within the short cylindrical inner portion 19 of sleeve 9.

Flange 14 of the die sleeve also has drilled clearance holes for set

screws

20, 21 and 22, and cap 18 is tapped threadedly to engage such set screws which may be adjusted to bear against the'outer side of roll 6 to determine, in cooperation with cap screws 15, the exact axial position of roll die 6 relative to sleeve 9.

Cap 18 is drilled for cap screws 23, 24, 25 and 26 as is the end of shaft 1 to bolt the cap to the shaft. It will be appreciated, however, that the effective driving of roll die 6 is through key 3 and keyway 10 as previously explained. Cap 18 is also tapped for back-

01f setscrews

27 and 28 whereby turning of such set screws in engage ment with the shaft end may serve to back off the assembly therefrom.

Figure 2 is illustrative of a normal assembly in accordance with my invention. If axial adjustment of the roll die is required to match impressions in top and lower roll dies, cap screws 23, 24, 25 and 26 may be loosened slightly and back-off set

screws

27 and 28 tightened proportionately, thereby spacing cap 18 a slightly greater distance from the end of shaft 1. Then, cap screws 15, 16 and 17 are released and set

screws

20, 21 and 22 tightened the required distance to match the die .impressions. Thereupon, after again tightening cap screws 15, 16 and 17, set screws 27 and 23 are released and cap screws 23, 24, 25 and 26 are tightened.

The mounting means of my invention not only aifords a convenient device for adapting the roll to the shaft but also facilitates bodily axial adjustment of the roll as described. It will be appreciated that the degree of movement involved is ordinarily slight to serve my purpose. The parts are easily manufactured and assembled, and rolls may be removed and changed without difliculty.

Other modes of applying the principle of the invention may be employed, change being made as regards the details described, provided the features stated in any of the following claims or the equivalent of such be employed.

I therefore particularly point out and distinctly claim as my invention:

1. A shaft and roll assembly comprising a shaft having a tapered end portion, a longitudinally extending key countersunk and secured in said tapered portion, a longitudinally split sleeve fitted over said tapered portion and having a complementary tapered inner periphery and a cylindrical outer periphery, the split in said sleeve having a widened portion accommodating said key located therein, a radially outwardly extending flange on the axially outer end of said sleeve, a roll liaviiig acen'tral cylindrical opening therethrough firmly seated on such cylindrical outer peripheral surface of said sleeve and provided with a keyway tightly embracing said key, an end cap having a short cylindrical central portion fitting within a cylindrical end portion of said sleeve and having a radially extending portion closely overlying said radially outwardly extending flange on said sleeve, cap screws passing through said cap and sleeve flange and threaded in the side of said roll to assemble said cap, sleeve and roll together as a unit, cap screws passing through said cap and threaded in the end of said shaft to secure said latter assembly thereto, set screws threaded in said radially extending portion of said cap and passing through said flange on said sleeve to bear against the side of said roll, and set screws threaded in said cap and bearing against the end of said shaft.

2. A shaft and roll assembly comprising a shaft having a tapered end portion, a longitudinally extending key secured in said tapered portion, a longitudinally split sleeve fitted over said tapered portion and having a complementary tapered inner periphery and a cylindrical outer periphery, said sleeve having a slot accommodating said key, a radially outwardly extending flange on the axially outer end of said sleeve, a roll having a central cylindrical opening therethrough firmly seated on such cylindrical outer peripheral surface of said sleeve and provided with a keyway tightly embracing said key, an end cap having a portion fitting within the end of said sleeve and having a radially extending portion closely overlying said radially outwardly extending flange on said sleeve, screws joining said cap, sleeve and roll together as a unit, screws securing said cap to the end of said shaft, set screws threaded in said radially extending portion of said cap and passing through said flange on said sleeve to bear against the side of said roll, and set screws threaded in said cap and bearing against the end of said shaft. 7

3. A shaft and roll assembly comprising a shaft having a tapered end portion, a longitudinally extending key secured in said tapered portion, a longitudinally split sleeve fitted over said tapered portion and having a complementary tapered inner periphery and a cylindrical outer periphery, said sleeve having a slot accommodating said key, a radially outwardly extending flange on the axially outer end of said sleeve, a roll having a central cylindrical opening therethrough firmly seated on such cylindrical outer peripheral surface of said sleeve and provided with a keyway tightly embracing said key, an end cap overlying the end of said shaft and said sleeve flange and havmg a centering portion fitting within the end of said sleeve serving substantially as a continuation of said shaft, means adjustably joining said roll, sleeve flange and cap together for axial adjustment of said roll relative to said cap and sleeve, and means securing said cap to the end of said shaft for adjustment axially relative thereto.

4. A shaft and roll assembly comprising a shaft having a tapered end portion, a longitudinally extending key secured in said tapered portion, a longitudinally split sleeve fitted over said tapered portion and having a complementary tapered inner periphery and a cylindrical outer periphery, said sleeve having a slot accommodating said key, a radially outwardly extending flange on the axially outer end of said sleeve, a roll having a central cylindrical opening therethrough firmly seated on such cylindrical outer peripheral surface of said sleeve and provided with a keyway tightly embracing said key, aii end cap overlying the end of said shaft and said sleeve flange and having a centering portion fitting within the end of said sleeve, means adjustably joining said roll, sleeve flange and cap together for axial adjustment of said roll relative to said cap and sleeve, spacer means adapted adjustably to space said cap and roll, and means securing said cap to the end of said shaft for adjustment axially relative thereto. 7 V i 5. A shaft and roll assembly comprising a shaft having a tapered end portion, a longitudinally extending key secured in said tapered portion, a longitudinally split sleeve fitted over said tapered portion and having a complementary taperedinner periphery and a cylindrical outer periphery, a roll having a central cylindrical opening therethrough firmly seated on such cylindrical outer surface of said sieeve and provided with 'a keyway tightly embracing said key, an end cap overlying the end of said shaftand sleeve and having a portion fitting within the end of said sleeve, fneans axially adjustably joining said cap and roll, andmeans securing said cap 'to the end of said shaft for adjustment axially relative thereto.

6. A shaft and roll assembly comprising a shaft having a tapered end portion, a longitudinally split sleeve fitted over said tapered portion and having a complementary tapered inner periphery and a cylindrical outer periphery, a roll having a central cylindrical opening therethrough firmly seated on such cylindrical outer peripheral suffaee of said sleeve, an end cap overlying the eiid'of said shaft and sleeve and having a reduced'centefi'rig portion fitting withinthe end of said'sleeve, means axially adjustably joining said cap and'roll, and means securing said cap to the end of said shaft for adjustment axially relative thereto.

References Cited in the file of this patent UNITED STATES PATENTS 1,378,091 Carlsen May 17, 1921 1,395,913 .Ford Nov. 1, 1921 2,010,451 Browning Aug. 6, 1935 2,401,536 Williams June 4, 194 2,456,516 Kidney Dec. 14, 1948 2,634,144 Friedman Apr. 7, 1953 FOREIGN PATENTS 121,613 Australia June 20, 1946