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Патент USA US2112120

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Mmh 22, was,
w. B. SCHMIDT
2,112,120
HONE
~RiletLSept. 14, 1936 .
24
2a
31
1 22
. 21,18
i’
i
2.7’ _
7
_
2.9
_a
g
28
‘
__
3mm
2,112,120
‘ v‘ PatenteduvMar. 22, .1938
UNITED‘ STATES
PATENT OFFICE '
' 2,112,120
noun
"William D. Schmidt, Worcester, Mass.I assignor
to The Heald Machine Company, Worcester,
Mass” a corporation of Massachusetts
‘
Application Septemhcr'M, 1936, Serial No. 100,579 ‘
’
9 Claims.
(of. 5171843) ‘
The present invention relates to a hone espe
‘cially adapted for theflnishing of external or in
‘temal surfaces as, for example, the raceways of
_ roller bearings, and the'invention is particularly
5 . directed. to an arrangement by which the individ
ual honing stones or other honing members may
all be held in contact with the work at all times.
In a, copending application ?led by Harold L.
Blood, Serial No. 100,580, ?led September 14, 1936
10 fora Hone, there is discloseda resilient arrange
ment by which the several honing stones making
up the complete hone are individually resiliently
held against the workpiece, thereby compensat
.
hub ill on the head provides for attachment of"
saidhead, with the honing members mounted
thereon,'to the end of a rotatable'spindle ll, of
any suitablecharacter. The spindle 3, as shown,
is made up of two separate members, but these
members are functionally integral andare so de
' scribed. .
The head I‘ has a plurality of radially extending
slots l2, in each of which is positioned a lever l3,
see also Fig. 3, substantially of bell crank form. 10
One arm of the lever 13 has extending parallel
thereto a bar I‘ which is integral with the lever
and which has a substantial amount of resiliency. -
may be independently held resiliently against
At the end of the bar)“ is an arcuate protuber
ance J5 engageable with the arcuate shoulder 6 15
on the hone spindle \3, thus permitting oscillation
of the lever I 3. about this point. ,It will be. noted
that the arcuate protuberance I5 is‘ not perma
nently attached to the honing spindle 3, but
merely rests thereag‘ainst and may be withdrawn
from engagement therewith at any time.
Surrounding, the head I, adjacent the bases of
the slots I2, is an- annular member I6 secured" to
the head as by bolts l1, said annular member.
having an inwardly extending ?ange l8 spaced 25
from the base of the slots l2 a su?icient distance
the surface being honed, at the same time avoid
to allowthe end of each bell crank lever 13, with _
ing for uneven wear on the‘se‘veral stones. In
15 this structure, the resilient arrangement above
referred to is in addition to a resilient actuating
mechanism by which the several honing members .
are urged as a unit into engagement “with the
workpiece.
,
n
‘
'
a
_ This structure is entirely satisfactory in use,
although in certain instances it is desirable to
avoid the resilient diaphragm provided in the
Blood construction. It is accordingly .the prin
cipal object of the present invention to provide a
25 structure by which each of the honing members
ing the necessity for the diaphragm of the Blood
construction, Other'and further objects and ad
> 30 vantages of the invention will hereinafter more
fully appear from the following detailed descrip
tion, taken in connection with the accompanying
drawing, in which-—.-
'
which the .bar It is integral, tobe located be
tween said ?ange and the base of the slot. ‘ This
end of the lever has a surface l9 engageable with.‘
the inner side of the ?ange l8, so that each of the
levers l3 can rock about the point of engagement
' between the lever and the ?ange. It will be noted
‘ r.
that each bell crank lever I3 is free from positive".
attachment to the‘ inwardly extending ?ange l8,
Fig. 2 is an end elevation of the hone of ‘Fig. 1, ‘and the connection between the lever and thiS_'-~
Fig. 1 is a side elevation; partly in section, of a
35 hone embodying the-invention.
'
also partly in section.
_
,
_
_
' ?ange may be said to be a free pivotal connection
' as the bell crank lever may rock relative to the
_ .
Fig. 3"is a perspective "view of‘ one of the ele
ments of the hone.
'40
.
v
-
Fig. 4 is a side elevation .of the hone head.
Like reference characters refer to \like parts in
the’di?erent ?gures.
-
~
\
?ange l8 and may be removed therefrom'at any
time.
3
v
'
‘
'
The opposite-end of the'“lever i3 is tapered,
40.
' with the inner surface thereof extending sub- .
With reference to ‘Fig. 1, the hone comprises I stantially .parallel to and spaced from the pro
ahead or arbor I, having an axial bore 2 in which jecting end of the spindle 3. On the outer sur-‘ .
45 a spindle 3 isslidable. The head has ‘a key 4 face of the lever at this end is‘an arcuate lug 20 45
engaging with a keyway 5 in the spindle to hold. . which engages in an arcuate recess 2| in a hone
the latter against rotation and to allow for axial carrier 22. There is no positive‘ attachment of
movement of the spindle. The spindle 3 has ‘an the hone carrier 22 to the end of the bell crank , _
arcuate'shoulder 6 positioned within the ‘head,
lever i3, and this connection is accordingly a free ‘
50 and the end of the spindle projects beyond'the » pivotal connection‘ making possible: the' separa
head and has a cap 1 secured thereto. The‘op'po
site ‘end of the spindle receives an axially posi
tioned bolt 8 for controlling the effective length
of the spindle,»the bolt being held against turn
55 in:v movement by a locking nut 9. A cylindrical
tion‘ of the hone carrier from the lever at any
time. The outer side of each of the carriers 22
has positioned thereon a holder 23 to which is se
cured?as by a suitable adhesive, a honing mem
ber in the form of a stone 24, preferably of abra 65
2
.
-‘
2,112,120
sive material. The stone is additionally held in
place by ?anges 25 extending upwardly from the
holder. The latter preferably has lugs 26 en
gaging in recesses 21 in the carrier to prevent
the holder from moving‘ on the carrier when the
hone is in operation.
,
The holders are held-on the carriers by coil
springs 28 and 29, each arranged in the form of
an annulus. The spring 28 is positioned at the
inner or right hand (Fig.1) end of the holders
and engages the ?anges 25. The other 2011
spring 29 is positioned in a recess 30 in the outer
end of each 'of the holders, and the inturned por
‘tion of the holder which forms this recess en
15 gages in a correspondingly shaped recess 3| in
the carrier. Not only do these coil springs hold
the holders against the carriers, but they also
hold each carrier in engagement with the corre
sponding lever and hold the levers against the
shoulder 6 of the hone spindle 3. For addition
ally holding the levers l3 in predetermined re-’
lation to each other in the head, a coil spring 32
is provided, also in the form of an annulus, and
this coil spring is positioned in a slot 33 in the
head, with the spring engaging all of the levers,
each of which has a slot 34 to receive said spring.
The honing head above described is applicable
to any suitable type of support in which is in
corporated a structure for expanding and con
30 tracting the hone. .In the construction shown,.
resilient arrangement of the bar I4 fntegralwith
each lever I 3, permits an individual resilient‘ out
ward urge of each lever separately. The lever
carrying the worn honing stone is thus urged
outwardly by its integral bar M to a greater ex
tent than the other levers, so that all of the stones
. continue to act upon the workpiece.
From the foregoing, it will be apparent that
each of the honing stones is resiliently urged
against the workpiece individually, so that varia- _
tions in the rate of- wear of the several stones
will not affect the operation of the hone. This
resilient connection in the present structure is in
tegral with the hone carrying lever, by which the
stone is urged into engagement with the work
piece. Wh'ere the honing stones or members are
normally held resiliently against the workpiece,
as by a single resilient mechanism, this individual
resilient structure is separate from the main re
silient mechanism and operates independently
20
thereof. It will be apparent that the bar ‘I4 has
a predetermined position relative to the lever I3,
so that when the rod 36 is shifted to the right,
Fig. 1, the hone may be collapsed by the pressure
exerted on’the hone by the several coil springs
28, 29 and 32.
1. In a honing device, an arbor, a plurality of
levers carried thereby, each lever having a free
pivotal connection at one point thereof with the
arbor, a honing member carried by each lever and
mounted for rocking movement relative thereto,
spindle3 is received. Within the spindle is lo
cated an actuating rod 36 having at the end each member having a free pivotal connection
thereof a head 31 engageable with the end of the with the lever, an actuating means for urging all
bolt 8. The rod 36 with the head thereon is re-. of said levers as a group into operative position,
siliently urged to the left by a compression coil anda resilient connection between said means
spring 38 surrounding the rod. The remainder and- each of said levers for urging each of said
levers independently of the other levers into
of the hone support is of any suitable character, operative
position, whereby each honing member
‘the spindle l l, on which the head is mounted, has
an axial bore 35 in which the'inner end of the
one example being fully shown and described in
a copending application of Harold L. Blood, Serial
No. 92,396, ?led July 24, 1936, and is not a part of
the present invention. It is su?icient to note
that movement of the rod 36 to the left, Fig‘. 1, is
45 preferably limited to prevent the honing stones
from being expanded by the coil spring to such
50
an extent that they cannot enter the bore of the
workpiece to be honed. The rod 36 may also have
incorporated thereon a suitable mechanism for
withdrawing said rod to the right, Fig. 1, to per
mit collapse of the hone when desired.
I
is individually held against the workpiece.
40
2. In a honing device, an arbor, a levercarried
thereby, a honing member carried by the lever,
means for urging said lever into operative posi
tion, said lever having a resilient portion provid
ing a connection between said lever and said
means.
'
'
3. In a honing device, an arbor, a plurality of
levers carried thereby, a‘ honing member carried
by each lever, a'n actuating means for urging all
of said levers as a group into operative position, 50
In operation the hone is expanded to such an , each of said levers having a resilient portion pro
viding'a. connection between ‘said lever and the
amount that it can enter the bore of the work
actuating means. i
"
piece and engage therewith, a-workpiece a being
55 shown in operative engagement with the several
honing stones. As the workpiece is given an axial
reciprocation relative to' the hone during the hoh
ing'operation, the honing stones are urged in
wardly as the workpiece moves to the right rela
60
tive to the hones, and outwardly as the workpiece
moves to the left, this movement being permitted
by a resilient action of the spring 38, and this in
and out movement of the stones causes a slight
65
reciprocatory movement of the rod 36 within the
spindle.
The spring 38 operates. through the
hone spindle 3 to urge all of the levers I3 out
wardly to carry the honing stones into engage
ment with the workpiece, with each of the stones
urged with substantially the same pressure as
each of the other stones. If any one of the stones
becomes reduced in size however, by reason of
more rapid wear than takes place on the remain
ing stones, the pressure exerted by the spring 38
cannot compensate for this uneven wear, but the
4. In a honing device, an arbor, a bell-crank"
lever carried thereby, one end of said lever'being 55
engageable with said arbor, a honing member on
the opposite end of the lever, and means for
urging said lever and member into operative posi—
tion, said lever having an integral resilient bar
60
engageable with said means.
'5. In a honing device, an arbor, a plurality of
bell-crank levers carried by said arbor, one end
of each of said levers being engageable with said
arbor, a honing member on the opposite end of
each lever, and means for urging all of said 65
levers as a group into operative position, each
lever having an integral resilient bar engageable
with said means.
6. In a honing device, an arbor, a bell-crank
lever carried thereby, one end of said lever being
engageable with said arbor, a honing member on
the opposite end ‘of the lever, and means for
urging said lever and member into operative posi
tion, said lever having an integral resilient bar
75
3
2,112,190
with its free end adjacent to the corner of the
lever and engageable with said means,
_
arbor and engaging with each lever, each lever
having an integral resilient bar providing a con
nection between the lever and the plunger.
'2. In a honing device, an arbor, a plurality of
bell-crank levers carried by said arbor, one end
' 9.‘ In a honing device, an arbor having a plural
of‘ each of said levers being engageable with said
arbor, a honing member on the opposite end of
ity of radial slots therein, a. bell-crank‘lever posi
tioned in each of said slots with one’ end of each
lever engaging with the arbor for rocking move
each lever, and means for urging all of said
levers as a group into operative position, each
lever-having an integral resilient bar, with the
ment relative thereto, a honing member rock- '
ably mounted on the opposite end of each lever,
a resilient bar integral‘ with each lever and hav
10 free end oi'eachlbar adjacentito the comer of
the corresponding lever and engageable with said
'meansrw
.
,
‘ 8. ‘Ina'honing device, an arbor having a plural-
ity of radial slots ‘therein, a lever positioned in
15 each slot and having a pivotal movement rela
~ . tive to. the arbor, a honing member rockably
mounted on each lever, and a plunger within the
ing its free end adjacent the corner thereof, and '
'
a plunger within the arbor and engageable with
the free ends of the resilient bar for urging the
levers and the honing members carried thereby
into operative position.
‘WILLIAM B. SCHMIDT;
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