Патент USA US2407016код для вставки
' Sept; *3,‘ 1946- ' F. B. 'KALISTER ET AL ~ ‘2,407,?016 » BALL LOADING MACHINE Filed April $0, 1945 I s Sheets-Sheet 1 FkA/vK B. KALISTER JAMES ' O. BY FRANK J. STAFFORD KONYVKA 5 ' ATTORNEY Sept. 3, 1946. 4‘ ' ‘ ~ F.‘ a. KA_LI5TER Er'm. 2,407,016 BALL‘LOADING MACHINE ' Filed Apri1~'so,.1945 ‘3 Sheets-She‘et 2 ‘ INVENTORS’ FRANK B. KALJSTfER f JAMES Q STAFFORD ‘ FRANK J. KONYVKA Sept 3, 3946- F, B. KALISTER ET AL 2,407,016 BALL LOADING MACHINE F’ileri April 50, .1945 ' 3 Sheets-Sheet ‘3 44 , INVENTORS FRANK B. KALISTER JAMES 0. STAFFORD FRANK J. KONYVKA Arron’ Y » I Patented Sept. 3, 1946 2,407,016 UNITED ‘STATES PATENT OFFICE “ 2,407,016 BALL LOADING MACHINE Frank B. Kalister, Cleveland, James O. Stafford, .Painesville, and Frank J. Konyvka, Maple Heights, Ohio, assignors, by mesne assignments, to Jack & Heintz Precision Industries, Inc., Cleveland, Ohio, a corporation of Delaware Application April 30, 1945, Serial No. 591,132 . " 5 Claims. (01. 29-201) ‘ 1 This, invention relates to a novel machine for inserting balls in ball bearing races. The ob ject of the invention, in general, is to produce a hopper fed machine for automatically inserting a proper number of balls in the races of‘ ball bearing assemblies with a minimum of handling and attention required by an operator to achieve greater speed in production than is possible by hand assembly, and to facilitate cleanliness by keeping the highly polished balls in a closed 10 2 tator being urged to their lowermost position by a spring H. A groove [5 in one side of the piston receives the end of ‘a set screw IE to prevent rotation of the piston and to provide limits for its motion in reciprocation. The loading chamber I 0 is provided with hopper until they are assembled with their as rounded corners I‘! at its lower end and termi nates at a distance above the table slightly greater than the thickness of the ball races to be loaded. Directly beneath the loading cham ber I0 is a circular opening IS in the table I, sociated bearing races. receiving a verticle ram l9 having a disc-like ' Other objects and advantages become apparent cam follower 20 adapted to be constantly rotated as the speci?cation proceeds in connection with and intermittently raised and lowered by a cam a preferred embodiment illustrated in the ac 15 2| on a power driven shaft 22. The upper‘end companying drawings in which: of the ram I9 is provided with a hemispherical Figure 1 is a sectional view through the ma ball center 23 and a plurality of sharp radial pro chine of the present invention taken approxi jections 2-4 for purposes to be presently described. mately on the line I, l of Figure 2; . A spring 25 resiliently urges the ram l9 into Figure 2 is a plan View of the machine; 20 constant driving engagement with the cam 2|. ‘ Figure 3 is a sectional view through the, ball A gear 26, on the shaft 22, drives a gear 2‘! which hopper; in turn meshes with a gear 28 carrying a ?nger Figure 4 is a sectional view approximately at 29 positioned to impart a step-by-step movement right angles to Figure 1, taken on the line 4, 4 to a star Wheel 30. The purpose of the star of Figure 2, and showing the parts in a different 25 wheel 30 is to drive the intermittent ‘feed disc position than Figure 1; 3! which receives ball races from the lower end Figure 5 is a sectional view taken approxi of the slide 3 and transfers them one at a time mately along lines 5, 5 of Figure 2; and into position between the ram I9 and the loading Figure 6 is a top plan view of the vertical chamber [0. A curved guide rail 32 cooperates ram. . 30 with the intermittent feed disc 3| in obtaining The parts of the present machine extend above and below a table or bench top I, carrying a shelf 2, provided with an incline slide 3 for feed ing ball races by gravity. The slide 3 is pref erably covered by a transparent panel 4 to ex clude dust from the ball races ‘as they are fed the proper alignment of the ball races as they - arrive under the loading chamber 10. In order to prevent any coasting action of disc 3| and to assist the latter in the proper positioning of the ball race a leaf spring 44 is secured at 45 to overlap the disc and provide a predetermined resilient braking action on the latter. For con venience in cleaning or removing a jammed part, a clamp 46 is provided to hold the ball loader, into the machine. Supported upon the table I is a ball hopper 5, having a cover 6, carrying a hand operated agitator or stirring element 1. The bottom of the hopper is provided with a 40 as a unit, secure. Dowel pins 41 and 48 are used number of openings 8 equal to‘the number of to hold the ball loader as a unit in direct align balls to be inserted in each bearing assembly, ment with feed disc 3|. This provides a quick and transparent tubes 9 are provided in the and easy means for repair and maintenance of manner shown to carry the balls down to a load the machine. ing chamber Ill. ‘ ' The above described mechanism is driven by an 45 The loading chamber l0 comprises a vertical electric motor 33 to a reduction gearing 34 and an cylindrical bore in a supporting block ll beneath overload release clutch 35 so that if any part of theball hopper, a piston I2 is slidably received the feeding mechanism should jam, the clutch 35 within the bore and loading chamber [0 so as would over-ride to prevent damage to the‘ parts. to occupy a lower position as shown in Figure 1 50 ‘The present embodiment of the invention is de to normallyretain the balls in the- tubes 9 and signedfor loading six balls into an annular cage preventtheir admission into the loading cham 40 associated with an outer race 4| of the type ber until ,the proper time. The piston l2 carries shown. In the present instance the cage .40 is anagitating rod 13 extending inwardly into the made of non-metallic material having ball aper ‘bottom of the ball hopper ‘5, the piston audaci .55 tures 42 in the form of sockets having an inside 2,407,016 3 4 when the cage arrives in loading position they opening smaller than the ball diameter so as to prevent passage of the ball into the interior of the cage. The balls are introduced into the load will be rotated past one or more of the ball load ing bores 43 before the cage descends so as to in sure certain loading of all the apertures. As the ram l9 descends, the loaded cage follows it into ing chamber in registry in positions correspond ing to the spacing of the ball apertures 42 by means of bores or tubes 43 which receive balls from the tubes 9. Thus, if there are six balls in the race and then the loaded assembly is ejected the bearing assembly they would be spaced 60° apart in the cage 49 and so the bores $3 are in‘ clined slightly downwardly and spaced radially at > 60° intervals around the loading chamber. Since tion over the loading ram. the cages iii] are not indexed in rotation as they are raised into the loading chamber-the ball aper tures 42 did not necessarily register with the bores d3 without some amount of rotation. For this purpose the cam 2! is provided with a high por tion having an annular extension sufficient to impart rotation to the cage M3, at least equal to. by the movement of the next assembly into posi In the various views the balls have been omitted in certain instances to more clearly show the op» eration of the mechanism in the various positions of its parts, it being understood that the slide 3 is to be'constantly'?lled with assemblies as shown in Figure 2 and that the hopper 5 is to be kept ‘supplied with balls, during the operation of the machine. “Thelpresentmachine may obviously be adapted to various assemblies of different types and hav ing a ‘diiferent number or so of balls, it being the angular spacing of the ball apertures. This annular rotation may exceed the spacing of the 20 understood that the present preferred embodi ment is shown and described merely for the pur balls and may be arranged to provide passage of pose "of illustrating vthe purpose of ‘the invention. each ball aperture into registry with at least two All changes ‘and modi?cations falling within the successive bores 43 if desired. scope o'flthe appended claims ‘are included (in the ' As previously stated, two of the primary objects invention. of the present machine are to achieve a rapid as sembly for production line operation with little 'We claim: 1. A ball loading machine comprising a ball manual vattention, and the exclusion of dust and loading chamber, “a hopper feed for supplying foreign particles which would render the bearing assemblies unsuitable for delicate precision in balls to said chamber in radial ‘directions there struments. The present machine accomplishes 30 arou'nd, means for feeding ball cage and bearing these primary objects by providing a feeding and race sub-assemblies one'at 'a ‘time to a station adjacent said loading chamber, fand means for loading mechanism capable of rather rapid oper moving said ‘cages out of-said bearing races-into ation and by obviating handling of the parts and said loading chamber with a longitudinal and prolonged exposure to atmospheric dust and other rotarymotion so as vto bring'said c'a'ges'into proper sources of contamination. registry with said ball feedingmea'ns, In operating the machine an operator has merely to load the ball-hopper 5 from time to time 2. A ball loading machine “comprising 'a ball loading chamber, a'plu'rality of ball feeding means which does not involve contact of the highly pol entering said chamber radially at angles corre ished balls with the skin or perspiration of the operator, and the feeding of the races from the sponding ‘to the ball ‘positions 'in the ball cageto shelf 2 into the slide 3, which may also be accom be loaded, means for feeding cage vand bearing plished without requiring actual contact with the race assemblies by intermittent motion to a ‘s't‘a operator’s hands. In their passage down the tionladja'c'ent said loading chamber, and means slide, the assemblies are protected from dust by geare'dto 's‘aidfeeding means vfor moving a cage the transparent cover'?. and an additional trans- out of its associated bearing race ‘and into vsaid parent cover may be provided over the short feed loading chamber with a longitudinal and rotary path associated with'the feeding disc 3| so as to motion and s'ubse'quentlyreplacin‘g said ca'ge when practically exclude the possibility of contamina-, loaded within said bearing vrace'iin' assembledrela tion throughout the whole feeding and loading tion therewith. operation. 3. A ball loading machine comprising a loading In feeding the machine, the cages ~68, having ‘chamber, a plurality of ball ‘feeding tubes enter an external diameter slightly less than the ing saidichambe‘r radially at ‘angles corresponding smallest opening in the external race, are placed to the ‘arrangement of balls in the ‘cage to 1be within the race, as shown in Figures 1 and 2, and loaded, gravity feed means 'for delivering cage the parts are delivered in this relationship to a and bearing race sub-assemblies one ‘at a time/on rest position immediately over the ram i9 and a supporting ‘surface, intermittent vfeed mecha beneath the loading chamber Ill. The cam 2| nism‘for ifeedin'g said sub-‘assemblies 'to a station is timed with respect to the feed disc 3| so that adjacent said loading chamber, an'dintermittent when an assembly has been placed in position as v1y reciprocating means for moving aicage out of shown in Figure l, the ram l9 will begin to ele its associated ‘bearing irace and into said loading vate with a rotary motion to carry the cage up 60 chamber in alignment with ‘said ball ‘feeding into the loading chamber with ball apertures 42 means ‘with a longitudinal and rotary motion, and to returnsaid cage when‘loa'd'e'd 't'o said'bear ing race in assembled relation therewith, and on a level with the loading bores 43. The rounded corners l1 facilitate entry of the cages into the loading chambenthe centering action being as sociated by the twist imparted to the cage by a plurality of sharp projections 21% on the upper end vof the revolving ram #8. Any slight ‘misalign ment of the assembly between feed disc 3| is cor rected by the ball projection ~23 which automati cally centers the whole assembly upon engage ment with the cage in the position shown in Fig ure -1 so that ‘the ram l9 will pass freely through the middle of the race 4!. If'the ball apertures ‘4-2 ‘are not in registry with the loading bores ~43 65 over-riding clutch means for disconnecting a ‘source‘of power in the event of jamming of any part of the-mechanism. 4'. A ‘ball loading machine ‘comprising a ver tical' cylindrical ball loading chamber, -a plurality of ball feeding'tubes-"entering said chamber radi ally, means to feed cage and bearing race assem blies to a station in alignment beneath said cham ber, a vertical ram beneath‘sa'id station in align _ 4 merit with said-chamber, and means to 'raise'and 75 ' ‘rotate said ram to ‘cause saidram'to‘pass through ' 5 2,407,016 said bearing race carrying said cage into said loading chamber with a rotary mation to cause ball apertures therein to register with said ball feeding means and to thereupon return to start ing position to assemble the loaded cage within said bearing race. 5. A ball loading machine comprising a vertical cylindrical loading chamber, a plurality of ball feeding tubes entering said chamber in radial directions therearound, a piston within said chamber adapted to cover the ends of said ball feeding tubes to prevent the admission of balls into 6 said chamber, intermittent feeding mechanism for depositing bearing cage and race assemblies at a station vertically beneath said loading cham bers, a vertical ram beneath said station and aligned with said chamber, and means to raise and rotate said ram in intermittent motion to cause said ram to pass through said race to ele vate said cage and said piston and to rotate said cage as it is brought into ball loading position. FRANK B. KALISTER. JAMES O. STAFFORD. FRANK J. KONYVKA.