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Патент USA US2407016

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' Sept; *3,‘ 1946-
~ ‘2,407,?016 »
Filed April $0, 1945
s Sheets-Sheet 1
Sept. 3, 1946. 4‘
F.‘ a. KA_LI5TER Er'm.
' Filed Apri1~'so,.1945
‘3 Sheets-She‘et 2 ‘
Sept 3, 3946-
F’ileri April 50, .1945
3 Sheets-Sheet ‘3
Y »
Patented Sept. 3, 1946
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
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
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
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
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
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
“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
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.
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
‘rotate said ram to ‘cause saidram'to‘pass through
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
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.
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