US676997A - Manufacture of axles, &c. - Google Patents

Description

No. 676,997. Patented June 25, I901. F. B. SCHNEIDER.

MANUFACTURE OF AXLES, 8L9.

(Applicgyion filed June 2, 1900.) (No Model.) 2 Sheets-Sheet I1.

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No. 676,997. Patented lune 25, l90l.

F. R. SCHNEIDER.

MANUFACTURE OF AXLES, 8w.

(Application filed June 2, 1900.) (No Model.) 2 Sheets-Sheet 2.

WITNESSES:

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FRANCIS R. SCHNEIDER, OF GRAFTON, PENNSYLVANIA.

MANUFACTURE OF AXLES, 84.0.

SPECIFICATION forming part of Letters Patent No. 676,997, dated June 25, 1901.

Application filed June 2, 1900. Serial No. 18,879. (No model.)

To (0% whom it may concern.-

Be it known that I, Farmers R. SCHNEIDER, a citizen of the United States,residing at Crafton, in the county of Allegheny and State of Pennsylvania, have invented or discovered certain new and useful Improvements in the Manufacture of Axles, &c. of which improvements the following is a specification.

The invention described herein relates to certain improvements in the manufacture of axles for cars and other articles. As is well known, the body portion of the axle-t e., the portion between the wheel-seats-is made tapering from the seats to the middle of the axle, the wheel-seats are generally made of a diameter slightly less than the largest diameter of the body portion and the journals are made smaller than the wheel-seats. Attempts have been made to form these axles by means of rolls constructed to have a reducing action simultaneously along the entire length of the axle or a great portion thereof; but by reason of the differences in diameter the axle during such reduction is subjected to such torsional strains as to render it unfit for use.

The object of this invention is to provide for the gradual reduction of the bar to finished size, the reducing action being limited or confined at all times to such parts as have equal or approximately equal diameters, thereby avoiding injurious torsional strains. The invention is hereinafter more fullydescribed and claimed.

In the accompanying drawings, forming a part of this specification, Figures 1 and 2 are perspective views of different portions of one of the rolls employed for shaping the middle and Wheel-seat portions of the axle. Fig. 3 isa plane projection of the roll-surface. Figs. at and 5 are perspective Views showing different portions of one of the rolls employed for shaping the journal portions of the axle. Fig. 6 isaplane projection of the roll-surface. Fig. 7 is a view in end elevation of a mill for rolling axles, and Fig. 8 is an elevation of the axle formed in the rolls.

In the practice of my invention I employ two stands of rolls A and B, preferably arranged in tandem, so as to facilitate the feed of the article from one stand to the other. The housings 1 of the stands of rolls are constructed for the reception of the bearingblocks 3, 4, and 5 for the journals of the three rolls in each stand. Supporting-blocks 6 are arranged under the journals of the upper rolls and are connected by bolts or other means to the bearing-blocks 3 in order that the upper roll may be raised to permit of the feed of an axle-blank to position between the three rolls. The bearings 4: and 5 for the lower rolls are preferably made triangular, as shown, as such form is better adapted to receive the thrust of said rolls when in operation. The bearing-blocks 3 and 5 are con nected to any suitable shifting mechanism, as the piston-rods 7 of fluid-pressure cylinders. By the outward movements of the bearing-blocks 5 the article will be permitted to drop onto rails 8 and 9. The rails 8 conduct the article to a lifting mechanism in front of the stand of rolls B, if both stands are arranged on or approximately on the same level. If the standB is on a lower level than the stand A, the guide-rails can be arranged to direct the article direct to the second stand of rolls. The lifting mechanism maybe constructed in any suitable mannersuch, for

example, as that shownconsisting of pivotally-mounted arms 10, having their outer ends curved, so as to receive the article from the rails 8. These arms are raised from receiving to delivery position by any suitable means, such as a fluid pressure cylinder. The rod 11, connected to the piston of the cylinder, is provided with rollers 12, on which the arms 10 rest.

The construction of the rolls in the stand A is clearly shown in Figs. 1, 2, and 3. Each of these rolls is provided with a groove 13, extending longitudinally along the body of the rolls. These grooves in the rolls are so proportioned that when the rolls are brought into operative relation to each other they will hold the blank, but without any material compression thereof. Aland or raised portion 14, which is so formed on each of the rolls as to operate on the middle portion of the blank, extends from the groove 13 a distance at least equal to one-third of the circumference of the blank, so that by the conjoint action of all three rolls the entire circumference of the blank at that point will be reduced. From this central reducing land or rib two lands 15 15 diverge and connectwith or merge into lands or raised portions 16 16 which extend from the points of junction with the lands or ribs 15 15 to the longitudinal groove .13.

The three rolls are so geared together that the several portions of the rolls above described willoperate simultaneously-e. g., the lands or ribs 14 will operate at the same time, followed in due sequence by the action of the lands 15 15 and 16 16.

When it is desired to form an axle, the rolls are brought to such position that the several grooves 13 in the rolls will form a receptacle for the blank. The upper roll is then raised, so as to permit a heated blank to roll down the rails 17 into the pocket formed by the grooves 13 in the lower rolls. The upper roll is then lowered and the rolls rotated. On the rotation of the rolls the lands or raised portions 14 of each of the rolls operate on the middle portion of the blank, reducing it to the desired dimensions. If desired, the operative faces of the land or raised portions 14 may be inclined oppositely from a medium line to correspond With the taper of the body of the axle. As the rolls continue to rotate the diverging lands or raised portions 15 15 come into operation on the blank, progressively reducing the portion thereof between the wheel-seats b. As the height or projection of thelands or raised portions 15 15 is lessened gradually from the land or raised portion 14 to their points of junction with lands or raised portions 16 16 the portions of the blank operated on by the lands 15 15 will be given the desired taper. The lands or raised portions 16 16, which come into operation after the lands 15 15, have their operative faces in arcs of circles of the same radii. Hence the end portions of the blank Will'be cylindrical. It will be understood by those skilled in the art that the area of reduction effected at any one time is limited to the widths of the operative faces of the lands or ribs, measured in a direction parallel with the axes of the rollsas, for example, when the lands or ribs 14 are operative on the article the length of the reducing area is equal to the length of the line a, b and when the ribs or lands 15 are operating the lengths of the reducing areas are equal to the lengths of the lines o d. As the several lands 14 15 15 are made comparatively 7 narrow, the portions of the article operated on'at any one time will vary little in circumference, thereby avoiding any material torsional strain.

It will be understood by those skilled in the art that the widths of the lands or raised portions will vary with the taper desired in the article to be producedi. a, the greater the taper the narrower the lands or raised portions.

While the invention is described in connection with the manufacture of railway-axles, it will be understood that it can be employed in the manufacture of other articles of varying diameters. The number of lands or raised portions can be increased or diminished in accordance with the shape or contour of the article to be produced.

If the reduction required is greater than can be effected by one revolution of the rolls, the rolls can be rotated any desired number of times, the rolls being gradually moved in toward each other.

As soon as the desired reduction has been effected by the rolls in stand A, the bearingblocks 5,With their roll,are moved out,thereby permitting the article to drop onto the rails. The upper roll of stand B having been raised and the several rolls adjusted to receiving position, the partially-formed article will be shifted by the transfer mechanism described.

to the receiving-grooves 13 of the lower rolls of stand B.

The rolls of stand 13 are provided at or near their ends with grooves 13, which form when the rolls are adjusted to operative positions receptacles for the portions of the blank to be operated on in these rolls. These grooves are formed in raised portions of the rolls, which increase in the width of their operative faces from one edge of the grooves around to the opposite edge thereof. It is preferred these raised portions should be formed by a series of lands or ribs 18 19 20, &c., of varying widths, the rear land or rib being of a width equal or approximately equal to the desired length of journal. In order to provide an even surface at the bottom of the grooves formed by the lands or ribs 18 19 20, the latter should be made progressively higher, so that each succeeding land should have a slight reducing action on the parts of the article reduced by the preceding lands or ribs. The body of the roll between the raised end portions is constructed to be nearly in contact with the portion or portionsof the article reduced in the stand of rolls IA, so as to prevent any bending or spring or the axle.

As only such portionsas are reduced in the stand of rolls A are in contact with the rolls,-

there will not be any material chilling of theportions to be reduced by the rolls in stand B. Hence the entire reduction of the article can be effected at one heat.

It will be understood by those skilled in the art that only two oppositely-rotating rolls, having suitable reducing-surfaces, can be used, provided suitable guides for holding the blank in position be employed.

Although I have shown and described with some particularity rolls and mills for the practice of my method, no claim is made herein to such rolls and mills, as the same form the subject-matter of an application, Serial No. 41,937, filed on or about January 3, 1901.

I claim herein as my invention 1. As an improvement in the art of manufacturing articles of varying diameter, the method herein described, which consists in subjecting the articles to reduction by roll- 10 action over limited areas and progressively from point to point along the article, whereby reduction is effected without torsional strains, substantially as set forth.

In testimony whereof I have hereunto set my hand.

FRANCIS R. SCHNEIDER.

Witnesses:

DARWIN S. WoLcorr, F. E. GAITHER.

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