US2212980A

US2212980A - Machine for polishing journals of railroad vehicle axles

Info

Publication number: US2212980A
Application number: US169890A
Authority: US
Inventors: Dixon Walter William
Original assignee: NEW YORK CENTRAL RAILROAD CO
Current assignee: NEW YORK CENTRAL RAILROAD CO
Priority date: 1937-10-19
Filing date: 1937-10-19
Publication date: 1940-08-27
Anticipated expiration: 1957-08-27

Description

Aug. 27, 1940. I DIXON 2,212,980

MACHI NE FOR I OLISHING JOURNALS OF RAILROAD VEHICLE AXLES Filed Oct. 19, 1937 4 Sheets-Sheet l ummlmmm m 29 E 6 g (22 .8. F

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Au 27, 1940. w; w; DIXON 2,212,980

' MACHINE FOR POLISHING JOURNALS 0F RAILROAD VEHICLE AXLES 4 Sheets-Sheet 2 Filed 001;. 19, 1937 Aug. 27, 1940. w, w DlXON 2,212,980

MACHINE FOR POLISHING JOURNALS OF RAILROAD VEHICLE AXLES Filed Oct. 19, 1937 4 Sheets-Sheet 3 1940- w. w. DIXON I 2,212,980

MACHINE FOR POLISHING JOURNALS OF RAILROAD VEHICLE AXLES Filed Oct. 19, 1957 4 SheetsSheet 4 Patented Aug. 27, 1940 UNITE srA'rs MACHINE roe POLISHING JOURNALS or some VEHICLE AXLES Application October 19, 1937, Serial No. 169,890

,1 Claim.

My inventionrelates to means for polishing the journals of railroad vehicle axles.

As is well known, the axle and wheel assembly of railroad vehicles is stored in yards and is, therefore, exposed to the elements, as a result of which the assembly becomes coated with rust. Before the assembly may be safely used it isnecessary to remove the rust" and other deposit from the journal of the axle and it has been found a difiicult and time consuming job to do this properly without changing radius or scoring. At the present time axle journals are either polished by hand when the wheels are not in a lathe for other work or by the combination of hand and machine work when axles or mounting wheels are in a lathe for other work.

The object of my invention is to provide a machine for polishing the journals of axles that will not only reduce the time and labor necessary 'to do this work, as it is now handled, but will do it with a higher degree of accuracy, and with this and other objects in view my invention consistsframe.

Figure 6 is a front elevation of Figure 5. Figure 7 is a rear elevation of Figure 5. I Figure 8 is a front elevation of the elevator. The reference numeral l designates the track rails suitably secured to a base 2. A carriage 3 is provided with wheels 4 and designed to reciprocate on said tracks, and is held firmly on the rails l at each side by means of a spring 5. An elevator frame work 6 is mounted on the carriage 3 and travels with the carriage, said elevator having an elevating screw 1 on which is mounted a cross head 8 which is adjusted up or down according to the direction in which the screw is revolved by the handle 9. The side walls of the elevator frame are provided with elongated slots H3 in which the ends of the bolt I l are mounted. The cross head 8 is connected with the screw 1 by means of the threaded element l2. The cross head has a forwardly projection platform or support [3 on which is mounted a non-reversible air,

or other suitable motor M, which is suitably connected'by the shaft [5 to the polishing element. The polishing element, or frame, comprises bars iii which are connected at their rear ends to a frame ll which has an opening; in which the .shaft E5 of the motor l4 issecured. The upper and lower pairs of arms it are hinged as at l9, as shown in Figures 1 and 7, whereby they may be separated, as shown in Figure 1, to receive the axle journal between them. These pairs of arms are held in closed position by means of the locks l9 (see Figure 6). The forward ends of the arms 56 form a cage pocket in which are secured wooden, or other suitable, blocks or polishing heads 20, each lined with a pad of emery, or other suitable cloth 2! that is folded so that it overlaps the block approximately one-half inch toward the journal fillet, and about one-quarter inch toward the collar of the journal. The arms it are of sufiicient length and are positioned relative to each other at a sufiicient diameter to permit the blocks 28 to travel the full length of the journals on the largest size axle.

A motor 22 of the reversible type is bolted. to the end of the rails I, and is directly connected to a feed screw 23, which screw is threaded through a lug 24 bolted to the underside of the carriage 3, so that when the motor 22 is in operation the rotation of the screw 23 forces the carriage 3 along the rails forward and backward as the motor is reversed.

An automatic trip for reversing the motor 22 is connected to the side of the rails and comprises two adjmtable stops 24 mounted in standards 25, said standards being adjustably mounted on the rod 25 and held in adjusted position by means of the set screws 21. A tripper 28 is bolted to the carriage 3 and travels back and forth with the carriage and is so located that it comes in contact with one of the adjustable stops 24 when the carriage 3 has reached the predetermined end of travel. This is determined by the length of the journal. As the bar 26 is moved it operates the links 28' and 29, and the link 29 operates the lever 3b which is directly connected tothe reversing valve on the motor 22. The link 28 is pivoted at H with its lower end connected to a spring 32.

, When the journals of a mounted pair of Wheels are ready to be polished the wheels are rolled into line with the center of the carriage 3 and the elevator 6; the arms Hi withthe blocks 20 and polishing material 2! are separated, as shown in Figure 1. Thearms it are now closed and locked together by means of the locks I9 with the polishing material bearing against the surface of the journal, as shown in Figure 2. The motor 54, when operated, starts the blocks 20 revolving on the journal. The reversible motor 22 is then started and the adjustable stops 24 so set that the reversible motor 22 will be reversed when the blocks 28 have reached the ends of the journal, thus reversing the travel of the blocks 20 and polishing the journal from end to end.

Axles not mounted on wheels may also have the journals polished with the use of this machine if they are properly mounted.

The emery block motion inward ends approximately at the base of the journal fillet, the overlapping emery cloth preceding through the fillet curvature, giving a fine finish without changing radius or scoring; and in this manner on the reverse motion the small overlap of the emery cloth on the outside completes the polish of radius at the collar of the journal before the travel is completed. As the work is done automatically the operator only applie oil on the journal a few times during the operation. The final operation is made with a carpet or felt pad which overlaps the blocks 2! in the same manner as the emery cloth, thus giving the entire surface the high polish desired.

The springs 5 are secured at their lower ends to the frame 5, which in turn is connected with the axle Ed, on which are mounted the rollers 5b which run on the lower edge or face of the rails I.

It is obvious that changes may be made in the details of construction without departing from the spirit of the invention defined in the appended claim.

What I claim is:

In a device for polishing axle journals, a shaft, a polishing frame comprising a frame member disposed at one end of the frame and fixed to the WALTER WILLIAM DIXON.