US1880454A

US1880454A - Apparatus for making bearings

Info

Publication number: US1880454A
Application number: US342511A
Authority: US
Inventors: William H Klocke
Original assignee: Cleveland Graphite Bronze Co
Current assignee: Cleveland Graphite Bronze Co
Priority date: 1929-02-25
Filing date: 1929-02-25
Publication date: 1932-10-04
Anticipated expiration: 1949-10-04

Description

Oct. 4, 1932. w. H. KLOCKEI 1,880,454

APPARATUS FOR MAKING BEARINGS Filed Feb, 25. 1929 5 Sheets-Sheet 1 A TTORNE 6.

Oct." 4, 1932. w. H. KLOCKE 1,380,454

APPARATUS FOR MAKING BEARINGS Filed Feb. 25, 1929 5 Sheets-Sheet 2 I N VEN TOR.

ATTORNEKS Oct. 4, 1932.

W. H. KLOCKE APPARATUS FOR MAKING "BEARINGS Fild Feb, 25. 1929 5 Sheets- Sheet s l 38 F in INVENTOR.

A TTORNEYS Patented Oct. 4, 1932 UNITED STATES PATENT OFFICE WILLIAM H. KLOCKE, OF WOODHAVEN, NEW YORK, ASSIGNOB TO THE CLEVELAND GRAPHITE BRONZE COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO APPARATUS FOR MAKING BEARINGS Application filed February 25, 1928. Serial No. 842,511.

The present invention relates to the manufacture of bearings, and its primar ob ect is to provide an apparatus for use in t e bending and shaping of flat blanks of stock into annular shells.

In one embodiment, my invention conslsts of a mandrel or core and forming devices which are adapted to coact with such core in the shaping of blanks suitable for a subsequent circularizing operation; and in another embodiment, such apparatus is so' modlfied that a completely formed shell is pro-- duced by a single operation. In both of these embodiments of m invention, the forming devices take the s ape of centrally pivoted jaws having means for positively engaging ablank and operating surfaces of the approximate configurations of the mandrels around which such blanks are bent, and the articles which result in each case have end portions which converge towards each other; when the first mentioned apparatus is being employed, such end portions are thus so disposed that a single additional operation will suffice for completing the shell, and when such second mentioned apparatus is being employed a finished shell results from the first operation. It will therefore be apparent that my invention greatly reduces the number of distinct processes which are necessary for the complete formation of bearing shells, and that as consequences of this such shells can be more rapidly and cheaply manufactured.

To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims; the annexed drawings and the following description setting forth in detail certain means of carrying out the invention, such disclosed means illustrating, however, but one of various ways in which the principle of the invention may be used.

In said annexed drawings Figs. 1 to 3, inclusive, are end elevational views which illustrate one embodiment of my invention and its manner of operation; and

That embodiment of my invention which I is shown inthe first three figures consists in general of a head 10 and a mandrelll. The head 10 comprises an upper part 12 which is slidably mounted between the Ways or guides 13, and a lower part 14 which is similarly mounted between the ways 15. The mandrel 11 is associated with a support or pedestal 16 and its upper end and side faces define a forming surface 17. At its lower end, the part 14 of the head 10 is provided with the ears or are arranged for providing the space 24 when the head 10 is in its elevated position. When such head descends, the cams 25 are adapted to engage with the blank being formed. It is to be understood that flat portions 23 and cams 25 in order to be effective must be on both formers. In order to provide for this it is necessary that the hinged connection of the formers must be in the nature of interfitting parts, similar to the dove-tailing at the corners of certain types of wooden boxes, but relatively movable to provide for the hinge action. In this manner the major portion of the strip of metal to be bent will be acted upon by both formers.

The operation of the above described apparatus is substantially as follows. When the head 10 is in its extreme upper position (Fig. 1), a flat blank 26 is positioned between the flats 23 and the top of the mandrel 11. Such head is then moved downwardly by any suitable means (not shown). During this movement, the cams 25 rotate into their locking positions and the outer ends of the blank are bent downwardly and conformed to the mandrel 11 by the members 20. The pivots which connect the links 19 with the lugs 18 and the formers 20 areso arranged that the force exerted by the head 10 when in its lowermost position will have a component which tends to, move the lower of such pivots towards each other. Therefore, all parts of the blank will be compelled to conform to the surface 17 of the mandrel 11 and the finished article will have the shape shown in Fig. 3. When the head is again raised to its uppermost position and the cams again assume their normal positions,'the blank will retain its imparted form and is ready to be slid from the mandrel and then circularized.

The modification shown in Fig. 4 difiers from the apparatus just described in that the mandrel. 27 and the formers 28 are adapted to completel circularize a blank in a single operation. gtherwise, it is the same in construction and operation as the embodiment illustrated in Figs. 1, 2 and 3. In the modification illustrated in Fig. 5, the pivot 29 is not fixed as in the preceding figures, but instead is adapted to push u wardly against the yielding plunger 30. Such plunger is reciprocably mounted within the ore 31 of the head 32, and intermediate its enlargement 33 and the shoulder 34 is a compression spring 35. Its upward motion is limited by the flange 36 and its downward motion is limited by the washer 37,, this latter being held in place by the nut 38. The modification illustrated in Fig. 6 differs from the embodiment shown in Figs. 1 to 3, inclusive, in that the links 39 are pivoted at their lower ends to the sup lementary formers 40 instead of being direct y ivoted to the main formers 41. Such main ormers are fixedly ivoted as at 42 and their remote ends pivota y connect with the sup lementary formers 40. The lower surface 0 the mandrel 43 is above the plane of action of the operating ends 44 of the formers 40. Therefore, when the formers 41 have assumed or are about to assume their lowermost positions, any continued downward movement of the head 45 will result in forcing the ends 44 of the formers 40 inwardly and upwardly. This will "have the effect of additionally bending the stock being formed and will further insure against any undesired uncoiling when the formers are raised to their initial positions.

The articles produced by the apparatus shown in Figs. 1, 2 and 3, and the articles which result from the operations described in connection with Figs. 5 and 6 may be finished in any desired manner, a preferable practice consisting in placing such articles in the space defined by stationary and movable dies having semi-cylindrical forming surfaces and in then relatively approaching such surfaces in order to form circular shells of the desired diameter and with abutting edges which will remain in contact after this operation has been completed.

rds the means herein disclosed, provided t ose stated by any of the following claims or their equivalent be employed.

I therefore particularly point out and distinctl claim as my invention 1. n apparatus of the class described, a core, formers for coactin with such core, a fixed pivotal connection tween such formers, and cam means associated with such connection, said means being adapted to engage and hold a blank positioned between said connection and said core.

2. In apparatus of the class described, a core, formers for coacting with such core, a pivotal connection between such formers, and flat and cam means associated with such connection, said flat means being adapted to form a space between said connection and said core, and said cam means bein adapted to engage a blank positioned in suc space.

3. In apparatus of the class described, a stationary core, pivoted forming means adapted for coacting with such core, yielding means for urging the adjacent ends of such formers towards said core, and positive means for moving the remote ends of such formers towards said core.

Signed by me, this 21st day of February,

WILLIAM H. KLOCKE.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as re-