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Патент USA US3067557

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Dec. 11, 1962
D. T. PEDEN ETAI.
3,067,547
BALL TRACK HONING MACHINE
6 Sheets-Sheet l
Filed Oct. 25, 1957
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7 7947671
BY FaZew/ n/M'Zn’zér
Dec. 11, 1962
.
D. T. PEDEN ETAL
3,067,547
BALL TRACK HONING MACHINE
Filed Oct. 25, 1957
e Sheets-Sheet 2
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INVENTORS.
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Dec. 11, 1962
D. T. PEDEN ET A].
3,067,547
BALL TRACK HONING MACHINE
Filed Oct. 25, 1957
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INVENTORST
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Dec. 11, 1962
3,067,547
D. 'r. PEDEN EI‘AI.
BALL TRACK norms MACHINE
6 Sheets-Sheet 4
Filed Oct. 25, 1957
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INVENTORS .
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BY
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Dec- 11, 1962
0. T. PEDEN ET AL
3,067,547
BALL TRACK HONING MACHINE
Filed Oct. 25, 1957
e Sheets-Sheet 5
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BY
Dec. 11, 1962
3,067,547
D. T. PEDEN EI‘AI.
BALL TRACK I-IONING MACHINE
6 Sheets-Sheet 6
Filed 001;. 25, 1957
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3,067,547
Patented Dec. 11, 1962
2
1
for vertical movement is a work spindle housing 7 rotat
ably carrying multiple work spindles, three of which are
3,067,547
BALL TRACK HONING MACHINE
shown in the embodiment being described and are each
indicated at 9. The work spindles 9 are arranged parallel
Dougias Tillotson Peden, Ann Arbor, and Robert W.
Militzer, Huntington Woods, Mich, assiguors to Micrm
matic Hone Corporation, Detroit, Mich, a corporation
of Michigan
Filed Oct. 25, 1957, Ser. No. 692,380
one to another with their axes disposed in a common
horizontal plane. Slideably carried in each of the spindles
9 is a work supporting ?xture in the form of an arbor
7 Claims. (Cl. 51—58)
iii (FIG. 4) the free end of which normally projects from
provide honing apparatus which improves the surface ?n
through a coupling 22, and a clevis 24 to a rod 25. The
pitman 23 is secured to the crank 21 by a bolt 26, the
head of which is slidaeable but ?xedly positionable in a
vertical slot 28 in the crank 21 so that the end of the
the forward end thereof, as shown. A vertically disposed
This invention relates to honing apparatus for surface 10 honing tool 11 which houses a stick-type abrasive 13 is
provided for each of the spindles 9. An oscillating bridge
?nishing arcuate annular grooves of bearing races, and
member .15 supports the tool 11 and is pivotally supported
particularly for surface ?nishing arcuate annular grooves
on a pair of pillow blocks 17. The abrasive sticks 13 are
on the external and internal peripheray of the inner and
adapted to be advanced along axes 19 (FIG. 4) which are
outer race elements of a ball bearing, respectively.
Because of the vibratory nature of conventional grind 15 pivoted about the axis of pivotal movement of the bridge
member 15 when the bridge member is oscillated.
ing apparatus and the rapidity of wear of the grinding
The bridge member 15 is oscillatable in a circular arc
wheel, ball race grooves produced thereby have annular
the amplitude of which is indicated by the scale and
waviness and roughness and lack uniformity in their trans
pointer 16. The mechanism for actuating the bridge mem
verse cross sections.
Accordingly, the main objects of the invention are: to 20 ber 15 comprises a crank arm 21, a pitman 23 connected
ish of a ball groove on the external and internal peripheries
of the bearing races; to provide apparatus of the character
indicated which will surface ?nish arcuate annular grooves
of the inner and outer races of a ball bearing to a true 25 pitman is movable vertically relative to the crank 21 to
vary the amplitude of oscillation of the bridge member
15. The rod 25 is reciprocally driven by an eccentric cam
type transmission 27 which comprises a planetary gearing
system to materially reduce the rate of reciprocation of the
of the inner and outer races of a bearing assembly as will
permit a perfect rolling engagement with the ball mounted 30 rod 25 and hence the speed of oscillation of the abrasive
sticks 13. The functioning of the planetary gearing in
therein; to ?nish the groove of a bearing race to have a
the transmission 27 can be conveniently controlled by
smooth uniform surface which increases the life and load
timer relays (not shown) so that the oscillation of the
carrying capacity of the bearing; and to provide such
abrasive sticks 13 is carried out preferably in two phases,
apparatus in a form which ?nishes a groove in the inner
and outer faces of a plurality of ball races simultane 35 a high speed oscillation phase ‘followed by a low speed
circle and uniform cross section; to provide apparatus of
the type mentioned which will produce such geometric
accuracy and degree of surface ?nish of the ball groove
oscillation phase.
ously without a proportionate increase in the amount or
When the drive through the transmission is direct, the
rod 25 is reciprocated at high speed and when the case
of the transmission is released, so that the drive is through
40 the gear system, the rod 25 is reciprocated at low speed,
junction with the accompanying drawings, wherein:
to thereby control the oscillation of the abrasive sticks '13
FIGURE 1 is a plan view of the honing apparatus em
complexity of the mechanism required.
The above and related objects will become apparent
when studying the following description, taken on con
selectively at high and low speeds for roughing and ?nish
bodying features of the present invention;
ing operations. Power is supplied to the transmission 27
FIG. 2 is a front elevational view, with parts removed,
through a belt and pulley arrangement, indicated generally
of the structure illustrated in FIG. 1;
45 at 29 by a motor 31 mounted on one side of the base 5.
FIG. 3 is a side elevational view of the structure illus
The actuation of the bridge member 15 causes each of the
trated in FIG. 1;
honing tools 11 to oscillate in unison between the positions
FIG. 4 is a vertical sectional view of the structure illus—
somewhat as shown in FIG. 4 and indicated at A and B.
trated in FIG. 2, taken along the line 4-4 thereof;
Each honing tool 11 slidably carries in its casing or
FIG. 5 is a view of structure similar to that illustrated
cylinder 30 a piston member 28 which engages the upper
in FIG. 2, showing another form of the invention;
end of the abrasive stick 13 and urges it downwardly into
FIG. 6 is an enlarged broken sectional view of the struc
the groove of its associated race when ?uid under pressure
ture illustrated in FIG. 5, taken on the line 6—6 thereof;
is admitted to the top of the piston members 28 through
FIG. 7 is an enlarged broken sectional view of the struc
conduits 32 at the time the spindle housing 7‘is elevated
ture illustrated in FIG. 6, taken on the line 7—7 thereof;
to its work-performing position. After the honing oper
FIG. 8 is a right-hand end view of the race supporting
ation, the ?uid under pressure is reversed to admit ?uid
head illustrated in FIG. 6;
below the piston members 28 so that they may be held in
FIG. 9 is a view of a race supporting mechanism, show
position or retracted when separated from the race 35.
ing a further form thereof;
The ?uid is admitted to passageways 32a and 32b in the
FIG. 10 is a view of structure similar to that illustrated
in FIG. 9, showing another form thereof; and
FIG. 11 is a view of structure similar to that illustrated
in FIG. 10, showing a still further form of the invention.
Referring to the structure in detail, the base of the
apparatus is indicated generally at 5 and mounted thereon
60
bridge member 15 through ?exible tubing (not shown)
connected thereto.
Automatic work handling and feeding mechanism is
disposed forward of the bridge ‘member 15 and indicated
generally at 33. The Work handling and feeding mech
8,067,547
3
&
anism‘ 33 includes an automatic hopper feed device and
retracting movement of the piston 63 beyond its normal
a loading cylinder 34, the piston of which actuates suit
able means (not shown) capable of axially pressing a ball
retracted position at which the ball race abuts the spindle
end 36. A stud 75 projects from the side 77 of the piston
race 35 onto each of the arbors 10 when the spindle hous
ing 7 is in its loading position and the arbors are ad
vanced to their extreme forward limits, as will be later
63 in position to engage one end of a push rod 79 which
is slideably disposed in the bore of the extension of the
member 47 and urged against the stud by a compression
described.
The spindle housing 7 is mounted in slideways provided
in a base plate 37 ‘carried by a vertically movable ram
spring 81. The other end of the push rod 79 is adapted
to actuate one of the three limit switches 83 (FIG. 1)
associated with the spindles 9. Each push rod 79 is op
39 which is ?uid actuated by suitable means (not shown) 10 erative to trip its respective limit switch at a selected dis
to collectively move the work spindles 9‘ between an ele
tance in the retracting movement of its corresponding ar
vated work-performing position, shown in full lines in
bor whenever a workpiece is not properly ?tted thereon.
FIG. 4, and a lowered, loading position indicated by the
Actuation of any one of the limit switches 83 shuts off the
position of associated parts and designated by like numer
power to the apparatus by suitable electrical connections
als with the su?ix A. When the spindle housing 7 is in 15 (not shown).
its work-performing position, the pivoted axes 19 are nor
Pressure ?uid is admitted to and Withdrawn'from the
mal to tangents to the circleslof curvature of the annular
chamber 49 through ports 85 and 87 which are formed in
grooves in the ball race 35. The travel of the ram 39 in
the longitudinally extending bore 55‘ and communicate
elevating‘ the spindle housing 7 is controlled by suitable
with the cylinder 49 on the sides '67 and 77, respectively,
limit'switches (not shown). While the spindle housing 7 20 of the piston 63 through apertures 80 in the member 47
is. in its‘lowered position, the arbors 10 are capable of
and apertures 90 in the collar 53. For advancing an arbor
being'adv'anced axially by ?uid actuating means to be
10, pressure ?uid is admitted through the port 87 and
described-and retained in their forward position under
apertures 90 to the cylinder 49 on the side 77 of the piston
slight ?uid pressure while the ball races 35 are pressed
63 and return ?uid is withdrawn from the side 67 through
thereon by the work handling and feeding'mechanism 33. 25 the port 85 and apertures "80. The arbor is'retained in ‘its'
The amount each ball race is slid ‘upon its respective arbor
advanced position with a preselected force while a ball
is controlled by the pressure of the ?uid causing the ad
race'is being ?tted thereon ‘controlled by the pressure dif
vancement. When the ball'races 35 are pressed on the
ferential on the opposite sides’ of the piston 63. When'the‘
arbors 10 with the predetermined force, the arbors are
axial force exerted on the arbor exceeds the regulated
retracted ‘until the workpieces abut their respective spindle 30 pressure dilferential on the piston 63, the loading cylinder
ends 36. The spindle ends ‘36 are accurately aligned'so
piston of the work handling and feeding mechanism 33
that the ‘annular grooves of the ball races lie in the same
retracts and simultaneously the pressure differential'on
vertical plane with the pivot axis of the bridge member 15.
the piston 63 is reversed, actuating the arbor rearwardly
The ‘forward end of veach arbor 10 is tapered from its
until the ball race pressed‘thereon'moves against its re
major diameter 38 to its ‘minor diameter 46 (FIG. 4)'so 35 spective spindle end 36. This is the intermediate position
as to-accommodate diameter variations in the bores of
of vthe ball races in their travel between the loading and
like b'all races which are to be machined. The manual
work-performing stations of the apparatus.
adjustment of the position of the housing 7 relative to the
If, for any reason, a workpiece should'fail to be re‘
work handling and feeding mechanism 33 is effected by
tained on its respective arbor and as a result the ‘latter is:
the rotation of the hand wheel 41 and screw 43 supported
withdrawn rearwardly beyond its normal retracted posi
in the base plate 37. Such adjustment is required initially
tion, the spring 73 will begin to be compressed between
for selecting the position at which the workpieces of a
the inner end of the member 45 and the ?tting 69, thus
given type will be axially retracted when they are pressed
reducing considerably the rate of'inward travel of the par
with a predetermined force upon their respective arbors.
ticular arbor as it is being Withdrawn from its loosely held
This locates the axial position collectively of the spindle 45 workpiece. When the reaction on the spring 73 approxi~
ends 36 so that the central longitudinal plane of each ball
mates the force on the piston 63, the inward travel of the
race 35 when abutting the adjacent spindle end 36 is
particular arbor is substantially stalled so that the loose
aligned vwith the longitudinal plane of each of the other
workpiece thereon is'prevented from dropping off. When
ball races 35 and with the pivot axis of the bridge mem
the movement of any one piston 63 inwardly beyond its
ber 15.
50 normal rearward position corresponding to the normal in
The construction of each spindle 9 is the same and a de
termediate position of the workpieces, because its corre
tailed description of the one shown in FIG. 4 will suf?ce
sponding arbor received no workpiece or because one has,
for the plurality employed. The spindle 9 comprises
become accidentally dislodged, is sensed by the push rod
members '45'and 47 which‘ are joined as shown to de?ne a‘
'79, the push rod trips its corresponding limit switch 83 to
piston chamber 49. The axially bored extensions of the 55 render the apparatus inoperative, thereby preventing dam
members 45 land 47 are rotatably supported as shown in
the collars 5-1 and 53 respectively which are ?tted in op
age to the corresponding arbor and its abrasive stick.
The planetary gear transmission 27 will oscillate the‘
posite‘ends ‘of a longitudinally extending bore 55 in the
housing 7. The provision of the ?uid actuating cylinder
for each arbor 10 within the spindle proper greatly simpli
?esthe operating circuit. The spindle end 36 is secured
to the extension of the member 45 and slideably carries
bridge member 15 by a direct drive connection through
the holding of the case-by a spring advanced plunger of?
the transmission. A solenoid 95 is energized to retract
the plunger near the end of the honing operation to-permit
the case to rotate and to drive through the planetary gear
the arbor’10. I On the extension of the member 47 a pulley
ing. This produces a low speed drive for the bridge mem
Wheel is ?tted which constitutes an element of the pulley
ber 15 near the end of the honing operation to produce a
and belt assembly indicated generally at 59 by which 65 high polish to the surface of the honed track. Upon the
power is supplied for rotatably driving the Work spindles
timing out of a timer relay controlling the duration of the
9 in common from a motor 61 mounted on the top of the
high speed oscillation phase, a second timer relay times
housing 7.
the low speed oscillation phase after the solenoid 95 is
A piston 63 is slideably disposed within the chamber 49
energized to retract the plunger to permit the planetary
connected to a piston rod 65 which extends from the side 70 case to rotate. When the low speed timer relay times out,
67 to the arbor 10 to which it is secured by a sleeve 69
the work-performing operation on the ball race 35 is
completed.
which slides within a sleeve 71 secured to the inner end
of the member 45. The sleeves 69 and 71 house a com
The detailslof the electrical circuit for controlling the
pression spring 73 located about the piston-rod 65, the
cycles of operation of the apparatus are not shown as it
spring; being free‘of had until a point is reached ‘in the 75 does not constitute a part of the present invention, it
3,067,547
5
being deemed su?icient to state that energization of the
electrical circuit is accomplished by actuation of buttons
89 on a control station 91 mounted on the base 5. The
cycle of operation of the apparatus is commenced when
the spindle housing 7 is in its lowered position by admit
ting pressure ?uid to each of the chambers 49 to effect a
pressure unbalance on the pistons 63 therein to advance
the arbors 10 axially forward to their extreme limit ad
jacent the work handling and feeding mechanism 33. The
vhopper feed portion of the latter advances a plurality of
workpieces 35 toward the means actuated by the piston of
the loading cylinder 34 which presses them on the arbors
10. When the axial force on each of the arbors 10 ex
5
with a predetermined pressure against the track surface
as the stone is oscillated on the center of curvature of the
track. A different work supporting element is employed
in the machine of FIGS. 5 to 8.
This comprises a sup
porting cylinder 97 having a piston 98 connected to a rod
99. The rod reciprocates a clamping element 101 within
a sleeve 102 which is secured to the forward end of the
cylinder 97. A cylinder 103 is supported within the sleeve
102 to which the rod 99 is sealed by an O-ring 104. A
cylinder 105 is mounted within the sleeve 102 in con
tinuation of the sleeve 103 carrying on its forward end
a work supporting head 106. A nut 107 engages a split
ring 108 when engaging the threaded end of the head 106
to secure it in extension of the end of the sleeve 102. A
ceeds the predetermined force on the corresponding piston
63 at the differential pressure then existing in each of the 15 pin 109 prevents the relative rotation between the sleeve
chambers 49, the piston of the loading cylinder retracts
and simultaneously the pressures unbalance on the pistons
63 in each of the chambers 49 is reversed to retract the
arbors 10 inwardly until the ball races 35 thereon abut
against their respective spindle ends 36.
The ram 39 (FIG. 2) is then elevated until the work
performing position of the housing 7 is reached, wherein
the center of curvature of each of the engaging ends of
the abrasive sticks 13 coincides with the center of curva
ture of the annular track groove in each of the ball
races 35. Thereupon, the motors 31 and 61 are ener
gized, driving the spindles 9 in rotation and the bridging
member 15 is oscillation. Concurrently with the ener
gization of the motors 31 and 61, pressure ?uid is ad
mitted to the ?uid conduits 32 of each of the honing tools
11 to force the piston 28. therein, downwardly pressing
the abrasive sticks 13 against the track surface of the ball
races 35.
The races 35 are rotated at a relatively high
constant speed, while the abrasive sticks 13 are oscillated
- about the center of curvature of the engaged ends also at
a relatively rapid rate until a sufficient amount of metal
has been removed from the ball races to produce the
correction desired in the contour and smoothness of their
and the head. The head 106 has a hollow interior 111 in
which a clamping head 112 on the end of the clamping
element 101 is mounted. A seal 113 about the reciprocat
ing member 101 provides a seal for the element against
the inner wall of the cylinder 105. The element 101 is
secured by a screw 114 to the end of the rod 99 to
reciprocate therewith. The forward end of the central
aperture 115 is sealed by a plug 116.
A work supporting ?xture in the form of a clamping
head 117 is secured by a plurality of screws 120 to the
forward face of the head 106 so that different size work
pieces may be machined through the expediency of chang
ing the head 117 to one having a workpiece receiving
aperture of greater or less diameter. The head 106 has
a slot 118 into which a workpiece 96 may be dropped to
be aligned with the clamping head 117. The head 112 is
then advanced by the rod 99 to push the workpiece 96
against a forward shoulder 121 to clamp it thereagainst
in position to be rotated when the cylinder 97 is rotated.
35 As is evident from FIGS. 6, 7 and 8, the head 112 has
three ?ngers 122 secured thereto preferably by welding,
brazing or the like, in position to have a projecting end
abut the workpiece 96 when aligned with the ?ange 121,
track surfaces. Thereafter, the planetary gearing in the
as clearly illustrated in FIG. 6. After the track has been
of oscillation of the bridging member 15 and hence of
the abrasive sticks 13 while the yieldable pressure is main
to move the workpiece 96 into alignment with the slot
transmission 27 is actuated to materially reduce the rate 40 honed, the retraction of the rod 99 causes the ?ngers 122
tained between them and the rotating ball races 35. Dur
ing the low speed oscillation phase of the abrasive sticks,
118, permitting the workpiece to drop therefrom when
the cylinder 97 has been stopped in position to have the
slot 118 presenting downwardly. After the workpieces
a reduction in their breakdown rate and consequently a 45 have dropped from the head, the cylinder 97 is rotated
180° to have the slot 118 positioned at the top, as illus
slight glazing thereof occurs. The quality of surface
trated
in FIGS. 6, 7 and 8. Additional slots 123 may be
?nish during this glazing or “sparking out” of the abrasive
provided in the part of the head opposite the slot 118 to
permit the coolant which is delivered to the track during
' After the timer relay corresponding to the low speed 50 the honing operation to flow out of different parts of the
periphery of the head, to thereby keep the three ?ngers
oscillation phase of the abrasive sticks has completed its
122 free of grit and abraded particles when in position to
cycle, a reversal of the actuation of the various solenoid
receive the next race to be honed.
valves is effected to reverse the sequence of operation of
The oscillatable bridge member 93 supports a plurality
the apparatus. The ram 39 is then actuated downwardly,
withdrawing the workpieces from contact with the abrasive 55 of the stone holding and advancing devices 125, each
having a forwardly projecting portion 127 containing a
sticks and cutting off the ?ow of pressure ?uid to the ?uid
slot 128 in which an abrading stone 129 is mounted for
conduit 32 of each of the honing tools 11. When the
downward movement. The stone has a cap 131 on the
spindle housing 7 reaches its lowered position, the pres
upper end which is guided in a widened portion 132 of
sure in each of the chambers 49 at the side 67 of the
piston 63 therein is rapidly increased, causing retraction 60 the slot which strengthens the upper part of the stone
engaged by the operating lever 133. Rubber means such
of the arbors 10 and their withdrawal from the ?nished
as an O-ring 134 is supported in slots 135 at the sides of
ball races, dropping the latter into suitable discharge
the forwardly projecting portion 127, as illustrated in
chutes (not shown) which transport them from the
FIG. 7, to extend therethrough at the ends for engaging
machine. The various parts of the machine are then in
the forward and rearward edges of the stone and retaining
65
position for repetition of the cycle of operations described
it in adjusted position with a desired amount of friction,
above which occur automatically but which may be man
as illustrated in FIGS. 4 and 6. The lever 133 is mounted
ually sequenced if desired.
on a pivot 136; the end 137 opposite to that which engages
Referring to FIGS. 5 and 6 another form of the machine
the cap 131 is engaged by the end of a rod 138. The rod
illustrated in FIGS. 1 to 4 is shown, employed for honing
the outer race of a ball hearing. The machine is the same 70 is moved upwardly by a piston 139 within a cylinder 141
when fluid is delivered to the lower end thereof from a
as that hereinabove described with the exception that the
conduit 142 and is retracted by ?uid from a conduit 143.
oscillating bridge member 93 supports a plurality of stone
The ?uid is delivered to the one or plurality of cylinders
feeding mechanisms 94 from the bottom rather than the
141 from passageways 144 and 145 which extend through
top of the bridge. This permits the stone to enter the race
the bar 94 and to and from which the ?uid is conducted.
and tozengage the inner track thereof‘and to be retained
sticks is re?ned beyond that which they normally pro
duce at their high speed oscillation phase.
3,057,547
The race 96 is dropped into the slot 118 of the head
and the piston 98 is advanced to move the rod 99 and
clamping element 101 to secure the race 96 in forward
position within the head 117. Thereafter, the cylinders
97 are advanced forwardly to have the tracks of the races
96 aligned with the stones 129 whereupon the cylinders
8
thereof in aligned relation with eachrother, means for
advancing said' elements towardrthe stones for aligning
the tracks therewith, means for raising said elements and
races into engagement with an associated stone, means
for rotating said elements and races, means for operat
97‘ are moved upwardly to move the tracks into engage
ing said oscillating means, and means for lowering and
retracting said elements and releasing the ?nished races.
ment with the ends of the stones. Thereafter the bar 93
is oscillated as pressure is applied to the end of the stone
face of a ball race including a base, a spindle‘rotatably
2. A machine for honing a ball track in a peripheral
by the lever 133 which produces an abrasive action to
supported on said base, means for driving said spindle~
the track of‘ the race as the stone oscillates on the center
in rotation, a work supporting ?xture at one end’ of said
spindle engageable with one of the peripheral surfaces
of a ball race for supporting the ball race for rotation by
of the arc of the track. After the honing operation, the
oscillation of‘ the bar 93 is interrupted, the delivery of
?uid to the cylinder 141 is reversed, the cylinders 97 are
said spindle, said work supporting ?xture being arranged‘
moved downwardly and then retracted rearwardly to be 15 to receive ball races from one end thereof, an ‘oscillating
separated from the forward end 127 of the stone holding
bridge member, means supporting said bridge member
and advancing devices 125 after which the piston 98 is
for oscillation about an axis perpendicular to the axis of
retracted, retracting the head 112 of the clamping element
said spindle, a honing tool carried by said bridge mem
101, the ?ngers 122 of which move the race into align
ber, said honing tool having an abrasive element provided
ment with the slot 118 which faces downwardly so as to 20 with an arcuate end adapted to engage a ball race to
permit the race to drop therefrom. The cylinder 97 is
be honed, means for biasing said abrasiveelement in a
stopped with the slot 113 facing downwardly, and after
the race drops therefrom is rotated 180° to locate the slot
118 at the top in position to receive the next race to be
honed. I Accordingly, by changing the clamping means 25
and the tools, the machine may be employed for honing
the track of the inner and outer race of a ball bearing.
In FIGS. 9, 10 and 11 a further type of clamping
means is illustrated which may advantageously be em
ployed for securing the inner race clamped upon a spindle
156 of a rotatable arbor 151.
After the arbor is ad
vanced forwardly to be aligned with the honing stone
direction towardithe arcuate end-thereof, means ‘for rela
tively moving the axis of oscillationgof said bridge‘mem-V
her and said base member in a direction perpendicularto
both the axisgofoscillation ofmsaid bridge member and
the axisgof-rotationof ‘said spindle, and means for feed-g
ing ball races into engagement with‘said work supporting
?xture at said one end thereof;
’
n
_
3. The structure set forth in claim; 2
N
g
g
V
Which'said
honing tool includes- a ?uid pressure cylinder secured to
said
bridge
member.
>
_
_
_
V
H
i
v
i
i
, 4. The structure set forth in claim 3' in which said
13 and is raised to have the track move into engagement
bridge member is formed with passages in communica
therewith, the outer race 152 of a ball bearing 153 is
tion with the interior of said cylinder for supplying ?uid
engaged thereby, the ball bearing is mounted upon a 35 under pressure to said cylinder.
‘
i
spring-pressed stud 154 on an arm 155 which is laterally
5. A honing tool adapted to be used in a ball'race
adjustable on a support 156. The corner of the race
honing machine having means for rotatably supporting‘
152 engages the forward face of the race 149 to force
a ball race to be honed and an oscillating member for’
it rearwardly against the shoulder of the arbor 151 and
supporting the honing tool, said honing tool including
downwardly to maintain a line engagement with the 40 a cylinder, a piston movable longitudinally in'said cyl
spindle 1S5) directly on the line of engagement of the
inder, an elongated abrasive stone extending longitu-l
stone 13 with the track. In other words, the line of
dinally within said cylinder in spaced relation thereto
honing occurring to the track 157 of the race 149 is
and projecting from said cylinder at one end thereof for
exactly aligned withlthe line of engagement of the race
engagement with a ball race to be honed, means on one
with the spindle 150.
side of said piston receiving the end of said abrasive ele-’.
This same relationship obtains in the structure of
ment opposite from the end thereof projecting from said,
FIG. 10 wherein an arbor 153 is mounted within a sup
cylinder, and means for app-lying ?uid pressure to the
porting sleeve 159 having an extending truncated conical
side of said piston opposite from the side’ at which said
head 161 mounted for rotation against a thrust bearing
abrasive stone is received, said-piston being movable
162. The sloping surface of the head 161 engages a
upon the wearing of said abrasive stone through a por
corner of the race 149 to force it against the shoulder
tion of’ said cylinder which is occupied by said stone
of the arbor 151 as it is held in engagement with the
spindle 15th in a line directly opposite to the line on
when said stone is substantially unused.
ball 164' which engages-the race 149 when the arbor 151
is moved upwardly. The race is forced against the
faces of ball races including a base, a plurality of rotary‘
spindles'supported on said base with the axes of rotation
_
/
6. The structure set forth in claim 5 in which, said
which-honing is produced by the stone 13 in the track
cylinder is provided with means at said one end thereof
157 of the race.
55 for supporting and engagingsaid abrasive stone as it is
A further form of the invention is illustrated in
advanced therethrough.
FIG.» 11 wherein the end of an arbor 163 contains a
7. A machine for honing ball tracks in the peripheral
shoulder of the arbor and against the spindle 150 by 60 thereof disposed in parallel co-planar relation, a [work
supporting ?xture at one end of each of said spindles for
supporting a ball race for rotation byv said spindle, said
ing devices may be substituted for the tapered spindles
?xtures being arranged to receive ball races from one
10 which have been hereinabove described with regard
end thereof, an‘ oscillating bridge member, means support
to the structure of FIGS. 1 to 4 inclusive.
65 ing said bridge member for oscillation about an axis
What is claimed is:
perpendicular to the axes of said spindles, a plurality of
the ball to provide a line engagement opposite to the line
upon which the honing operation occurs. Such support—
1. In a machine for honing a ball track in a periph
honing tools carried by said bridge, each of said honing
eral face of a ball race, a plurality of abrasive stones
tools having an abrasive element provided with an'arcu
having an arcuate end, means for supporting said stones
ate‘ end adapted to be positioned in operative relation
for oscillation in a common plane on the centers about 70 to a ball track supported on one of said work supporting
which said arcuate ends were struck, means applying
?xtures, means for biasing each of said abrasive ele-'
a pressure to the ends of the stones opposite to that hav
ments‘ in a direction toward‘ thev arcuate end thereof,
ing the arcuate end, a plurality of rotatable elements
means for‘ relatively moving'the axis of oscillation of
having their axes in spaced relation, 2. ?xture on each
said bridge member and said base in a direction perpen
element for supporting a ball'race with the ball tracks 75 dicular to said axis of’ oscillation of said bridge member
3,067,547
and to said axes of rotation of said spindles, and means
for feeding ball races into engagement with said Work
supporting ?xtures at said one end thereof.
References Cited in the ?le of this patent
UNITED STATES PATENTS
718,474
1,391,875
Kasson _____________ __ Jan. 13, 1903
Beck ______________ __ Sept. 27, 1921
10
2,177,992
2,252,096
Moon ______________ __ Oct. 31, 1939
Pew _______________ .__ Aug. 12, 1941
2,258,571
2,340,513
Indge _______________ .._ Oct. '7, 1941
2,396,022
2,406,606
2,614,446
2,688,218
2,791,071
Deuring ______________ __ Feb. 1,
Marren ______________ __ Apr. 9,
Jackson ____________ __ Aug. 27,
Miller ______________ __ Oct. 21,
Taylor ______________ __ Sept. 7,
Schorling et a1. ______ __ May 7,
1944
1946
1946
1952
1954
1957
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