US1333137A - Rolling metallic wheels - Google Patents

Description

2E. E. SUCK.

` ROLLING METALLIC WHEELS.

APPLICATION FILED MAR. I3. 19181 1,33 3, 1 3'7 Patented Mali 91920.

EDWIN E. SLICK, OF WESTMONT BOROUGH, PENNSYLVANIA.

ROLLING METALLIC wHEELs.

Specification of Letters Patent.

Patented Mar. 9, 1920.

`Application filed March 13, 1918. Serial No. 222,081.

To all who/m, t may concern Be it known that I, EDWIN E. SLICK, a citizen of the United States, and a resident of the borough of Westmont, county of Cambria, and State of Pennsylvania, (whose post-office address is Johnstown, Pennsylva# nia,) have invented certain new and useful Improvements in Rolling Metallic Wheels; and I do hereby declare the following to be va. full, clear, and exact description of the-invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in rolling the tread and flange portions of metallic ,wheels and although it may be applied to wheels made of any particular metal, I will, for the sake of simplicity of description herein, refer to those made of steel.

Heretofore, in rolling flanged wheels and particularly double-flanged wheels such as are used for traveling cranes, traveling tables, etc., it has been customary to roll the outer cylindrical surfaces of the same in the form of a right-line cylinder and then 'machine the outer portion to form the tread and flanges. This practice removes the most valuable material, as the outer surface of a rolled wheel is that best ladapted to withstand wear and stresses, besides which this results in a. considerable amount of scrap loss and extra expense. rolling 'the tread and flanges by means of a pair of rolls, one of which is preferably provided With a projecting tongue of less width than the tread and of a projection equal to or greater than the height of the flange of the wheel and, at the same time, usea finishing roll', the contour of the collar or projecting portion and of the adjacent portions being substantially that of the finished wheel. During this operation the hub of the wheel blank is clamped firmly between a pair of dies which substantially conform to the outline of its intermediate portions, while the work is performed upon the flange and tread portions by the rolls aforesaid.

Having thus given a general description of my invention, I will, in order to make the matter more clear, refer to the annexed sheet of drawings, which forms part of this speciication and in which like charactersrefer to like parts.

Figure 1 is a top plan view, art of which is in section, of my improve wheel tread I obviate this byrolling mill. Fig. 2 is a vertical sectional elevation'of one-half of the machine, taken on a plane passing through the wheel web. Fig. 3 is a detailed yview drawn on a larger scale illustrating the arrangements of clamping vdies and tread rolls; and Fig. lis a slightly modified form of clamping dies and tread roll.

Referring now to the characters of reference on the drawings :-1 is the main fra-me of the machine, 2 and 3 are pressure shafts adapted to be moved together and clamped by fluid pressure and to be rotated by means connected to the outer end of the shaft 2, not shown. are the clamping dies 4, which are adapted to substantially conform to the outline of the intermediate portion of the wheeh'as illus- 4trated, and hold it securely in position while being rotated. 5 is a hydraulic pressure cylinder provided with a pressurev plunger which is in line with the `pressure shafts 2 and 3, and I also provide a pull-back cylinder and plunger, these being adapted to project and retract the clamping die secured to the shaft 3. Suitable thrust bearings are provided to take the thrusts of the shaftsas k. the dies are forced toward each other anderotated, thereby rotating the wheel blank, which is firmly clamped between the dies 4. I also provide a slidable roll housing 6, in which the roughing roll 11 is. mounted, and

Secured to the ends ofthe shafts l a slidable roll housing 7, in which the inishing roll 13 is mounted, these rolls being-actuated to and from their work by means of the pressure cylinders 9 containing Y pressure plungers, and the pulleback or retracting cylinders 8` and their plungers; all of which are connected to the slidable roll housings 6 and 7. In order to provide a ready means for the adjustment of the forward movement of the rolls, I provide large nuts 10 on the ends of the rods, and these have smaller hexagonal or polygonal ends to fit a suitable wrench for the purpose of turning the nut von the screw-threaded end of the bolt; and

outside of said large nuts, lock nuts are provided as illustrated, to securely clamp the large nuts in position, and by 'screwing or unscrewing and setting these nuts as desired, the forward movement of the rolls may be made less or greater, and these nuts provide stops to accurately gage the inward movement of the rolls to'determine the extent of their action upon the blank. The roughing roll is provided with a projecting collar 12,

which is lpreferably narrower than and as deep as or deeper than the finished groove in the wheel, while the finishing roll 13 is provided with a collar 15 which, with the adjacent grooves 14, is of contour substantiallythe same as that of the finished tread and inner portions of the flanges of the finished wheel. The wheel is indicated generally as 16, while the wheel blank is 17, shown in dotted lines. The groove formed in the blank by the roughing roll is 18 and the preliminary or rudimentary flange portions on each sideof the collar of, and formed by the action of, the roughing roll are 19. The flanges of the finished wheel are 20 and the grooved tread of same is 21.

Referring now to F ig. 4: 26 is a modified form of finishing roll, 22 is the tread forming the collar thereof, 23 are grooves therein adjacent to said collar, and 24 are modified forms of clamping dies. the projecting portions 25 of which extend farther from the axis than the type illustrated in Fig. 3, thereby providing further support for the outer portions of the wheel fianges when being formed.

Although I have described and illustrated my invention as applied to rolling wheels vwith flanges on each side of the tread, I wish it understood that it is equally adapted to rolling wheels with a tread and one fiange only.

The operation of rolling` a wheel is as follows :-Pressure fluid is exhausted from the pressure cylinder 5, thereby retracting the clamping die 4, which is secured to the shaft 3, and the tread rolls 11 and 13 are also retracted by exhausting the pressure fluid from the cylinders 9, whereby the pull-back cylinders which are' preferably provided with constant sources of fluid under pressure, will produce the required backward movements. This being accomplished, a wheel blank. the periphery of which is composed of a right-line cylinder is in serted and centered between the clamping dies 4. The

clamping dies 4 yare then projected forcibly' against the wheel blank by admitting pressure water to the cylinder 5, whereby the blank is held firmly between the dies 4. The shaft 2 is then rotated, carrying with it the clamping dies of thel wheel blank, whereupon the rolls 1.1 and 13 are projected toward and into the wheel blank as it revolves by admitting fiuid under pressure into the cylinders 9. The collar 12 of the rpughing roll, produces a narrow indentatlon .or groove in the tread of the rotating Wheel blank, while on the opposite side the collar 15 of the finishing roll widens this groove and brings it to its final form. The adjusting nut 10, which regulates the inward movement of the roughing roll,- has been so set that the inward movement of the l roughing roll is arrested at the proper place to complete its work, and the adjusting nut for the finishing roll has been set so that the lower part of the tread of the wheel, which is formed by the projecting collar 15 ofthe finishing roll, is at the proper distance from the wheel axis to produce the diameter and finish desired. The revolution is continued while the roughing roll ceases to reduce the blank, while the finishing roll continues to operate and finishes the entire periphery, whereupon the rolls and clamping dies are retracted and the finished wheel withdrawn. By arranging a roughing roll at one side of the blank and a finishing roll at the opposite side and projecting said rolls toward the center of the blank simultaneously, I thereby provide a substantial equality of pressure on each side of the blank, which facilitates the operation and prevents undue stresses in the blank or anyportion of the apparatus, as will be readily understood.

It should be noted that in producing the groove, the bottom of which forms the tread of the wheel, the material of the outer portion of the wheel blank is displaced outwardly to form the flanges, as indicated particularly by the dotted and full lines in Figs. 3 and 4.

Although I have described and illustrated my invention in considerable detail, I do not wish to be limited to the exact and specific details thereof as shown and described, butdies, and projecting collared rolls against opposite sides of the periphery thereof, at least one of said rolls being adapted to contact with the interior. and exterior of the flanges and with 'the tread thereby forming the tread and flange portions.

2. The method'of finishing double flanged wheels, comprising clamping a blank having a cylindrical outer surface between rotating dies, and projecting a roughing roll with a narrow collar against one side and a finishing roll with a wider collar against the opposite side.

3. The method of finishing double flanged vwheels, comprising clamping' a blank having a cylindrical outer surface between rotating dies; projecting a roughing roll having a narrow collar against one side, anda finishing roll, with a wider colla-r conforming to the finished outline of the wheel tread and adjacent parts of the flanges, against the opposite side.

4,. The method of finishing double flanged wheels, comprising clamping a blank having a cylindricallouter surface between rotating dies; projectingl a roughing roll with a narrow collarlagainst one side and a finishing roll with a wider collar against the opposite side; then limiting the inward projection of said roughing roll while continuing the inward projection of the finishing roll, whereby the tread is formed to the outline of the finishing roll.

5. In an apparatus for finishing wheel blanks, a pair of clamping dies adapted to substantially conform to the intermediate portion of' the blank, means for 'projecting one die toward the other to clamp the blank therebetween, means for rotating said dies,`

a roughing roll and a finishing roll slidably mounted adjacent the periphery and provided with means for projecting same into and retracting same from the work, the roughing roll being provided with a collar adapted to contact with the interior of the rudimentary flanges and tread, and the filiishing roll beine` provided with a collar and grooves'adaptec to contact with the tread and the interior and the interior and exterior of the flanges.

6. In an apparatus for finishing Wheel blanks, a pair of clamping dies adapted to substantially conform to the intermediate portion of the blank, means for projecting one die toward the other to clamp the blank therebetween, means for rotating said dies, a roughing roll and a finishing roll slidably mounted adjacent the periphery and provided with means for projecting same into and retracting same from the wheel tread, and adjustable stops adapted to regulate the extent of inward movement of said rolls.

'7. In an apparatus for linishing wheel blanks, a pair of rotary clamping dies adapted tol clamp the blank therebetween, means for advancing, retracting and rotating said dies, a roughing roll provided with Va narrow collar mounted opposite the periphery of the wheel, provided with means for advancing` and retracting same and for limiting its movement, a finishing roll provided with a wider collar and grooves conforming to the finished tread and flanges of said roll,'and means for advancing, retracting and limiting the movement thereof.

In witness whereof I. hereto afiiX my signature.

EDWIN E. SLICK.

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