close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2131698

код для вставки
Sept. 27, 1938.
w. F. GROENE ET AL
2,131,698
'
CRANKSHAFT CHUCK
Filed Oct. 18, 1937
\
|=|
\m
E:
L5
INVENTORS.
v
BY
-
'
wkt'T'z'azassi'zi
'
ATTORNEY.
‘
Patented Sept. 27, 1938'
2431;698
-
STATES
‘2,131,699’. '
.CRAN‘KSHAFT CHUCK; _
‘William F. ‘Groene and Walter
' ' I
Meyer, Cine
cinnati, Ohio, assignors to The IL. K2 LeiBlond ~ g
Machine Tool Company, Cincinnati, Ohio,;.a~ .
corporation
of
Delaware;
_}
it.
.
r
t
I
Application October is, 1937', Serialf‘-No."169,549 ~I ' '_
' 8 Claims;
'- ifI‘his'invention pertains to certain modi?cations
and improvements in chucking devices of a char:
acter ‘shown in our'copending application Serial
5
Number 121,509, ?led~ January 21, 1937. More
speci?cally .the inventionypertains‘ to “improve
ments in applying the chucking ring‘ to the pr'e—
machined peripheral locating area of the crank
shaft preparatory to loading the assembly in the
center drive ring gear.
10
7
.
V
'
i
y'
'
An object of o'urinvention is to provide in a
chuck which utilizes a chucking ring engaging
around a peripheraltlocating .area' of a work
piece, an arrangement for positively locking the
chucking ‘ring aboutfthe‘ work piece before said
15 assembly is inserted in the‘ work spindle.
.
Another object‘ is to (arrange achuck, which
utilizes a chucking ringlengaging'v around a_ pe
ripheral locatingarea of a work piecehinxsuch
a way that the chucking ring is at'all times main
20 tained in proper engagement with the work in
dependent of any driving action of the‘ work
spindle on the chucking ring.’ '
f
"
Further objects will appearin the course of the
following‘ description ‘of the ‘drawing in which:
25
_ Figure I is, an axial View partly inijsection on
line I of Fig. II of a'ring gear chucking’arra'nge
ment utilizing .a machined peripheral locating
areajon a crankshaft web, clearly showing the
chuckingjring applied to‘ the crankshaft.
Figure II_is a View partly in section on line
II—II ‘of Figure I clea’rlyshowing points of con-.
tact between the crankshaft, the chucking ring;
and‘ thejdriving gear. '.
t
The arrangement comprises a chucking ring I
35 comprising the arcuate members 2 and 3 hinged
together about a pivot pin 4. 'The member 2 has
a bearing surface 5 and the member 3 has a bear
ing surface 6 adapted to nicely ?t around the
peripheral locating surface ‘I of the crankshaft
40 C, when the two members 2 and 3 are swung to
gether about the work. After the members are
so engaged with the surface ‘I an eyebolt 8 piv
otally mounted on a pin 9 ?xed in the member 3
is swung toward the work C‘, its upper end having
a tightening nut Ill which venters the slotted end
ll of member 2 and is tightened down to ?rmly
bind the two members.2 and 3 on the peripheral
locating surface. The chucking ring I can pos
itively drive the crankshaft clockwise as shown in
50 Fig. I by abutting contact of the surface I! of the
member 2 with surface l3 of the crankshaft web
[4 having the peripheral locating area 1.
After having thus properly applied the chuck
ing ring I to the crankshaft C, the crankshaft is
55 inserted axially into the driving spindle or ring
(01. s_2-4O)
'
'
gear ‘I5 while held'i'n‘aeposition turned slightly
’
in a clockwise 'directibn'from the position shown
in Fig. I. The ?nished ‘convex surface l6 and I1 ,7
on the outside of the7'chucking ring member 3,
contacts‘thef respective mating surfaces l8 and
l 9 formed by the respectiveconcave plates 20 and‘ e
21 y?xedwto the'ring'gear l5 by suitable screws 22
to properly centérj the'chucking ring I and thus
the crankshaft C-‘o'n its'proper center of turning.
Substantiallydiametrically opposite the sur
facesl'llirand I‘! ‘of the chucking ring member,‘ 3
is mounted a roller 23 on a vstud 24 ?xed in mem- _V- l
ber‘iZandTcOn?ned from axialmovement on the
stud’2'4 by'the side walls 25 and26 of; the pocket
21. ~ The roller*23 has a flatted portion 28adapt- ‘
ed to engage‘the angularly disposedsurface '29
of the
by
a screw
driVingwedgeSO'?Xed
3i. ‘Set screws 32~and
in'the ring
33 threaded
gear l5
in thermemb'er' 2 projectlnto the pocket 21 and
engage intonotches 34 and 35 respectively are‘
adapted to "befadjusted vto ‘permit only su?icient'
rotation of the‘ roller 23‘ to allow proper engage
ment of the ?atted portion :-28"thereof "withthe -
surface 29 of driving wedge 30 while at the same
time ‘keeping.therolleifproperly positioned for
said engagement when the r'ing‘l is removed from
the‘ring gear l5 during loading and unloading of
the-work;
'
t
’
'
‘
'
'
~ After having axially-loaded the crankshaft c" a I ,
with therchucking ring I applied thereto as'de
scribed,‘the crankshaft and‘w chucking ring ‘are
rotated countereclockwise, as‘ shown in ‘Figt?-I,
on the-bearing'portions' l8jand i9 either by man
‘an
ual'rotation of the crankshaft orb'y starting rota;
tion of the driving ring gear‘ 15 in a clockwise"
direction or‘ normal driving direction, whereupon .7
the ?atted portion 28 vof the roller 23 is brought '
into engagement with the angularly disposed-sur
face 29 of the driving Wedge 30 to thereby cause f 'l
the ring gear 15 to drive the chucking ring I and,
the crankshaft C in clockwise direction.
The
engagement of the driving wedge 28‘with roller
23 causes the driving ring with its crankshaft web
gripped in it to be urged radiallyrtoward the
surfaces l8 and IS in the ring gear. to assure ac 45
curate, positive maintenance of centered position
during rotation of the crankshaft.
‘
>
‘It is to be noted in this arrangement that the
chucking ring is'fully engaged and clamped up‘
tight about vthe peripheral locating area» 1 before
the work with the ring attached is inserted in the
driving spindle I5. “By this arrangement the
maintenance of proper engagement of the chuck
ing ring and the workpiece is completely divorced 55
>
2
2,131,698.
from the driving action of the ring gear IS on the
chucking ring I.
Having fully set forth and described our in
vention, what we claim is:
i
1. A chucking device for crankshafts compris
ing, a rotatable work spindle, a chucking ring ap
plicable to a ?nished locating area on a crank
ing members, means on said members for holding
them in ?rm engagement with premachined lo- '
cating areas on a crankshaft web, means on at
least one of said members adapted to engage.
locating surfaces on a rotatable work spindle for
accurately centering said chucking ring and said
crankshaft on said work spindle, some of said
shaft, abutment means ‘on saidspindle adapted 7 locating surfaces on said‘workspindle serving also
to" cause said workv-spindlerto drive said-chucking
to engage saidchucking'ring whereby said chuck
ring, and means on said chucking ring for posi 10
ing
ring
is
driven
in
properly
located
position
on
10
ztively'driving
said crankshaft.
said spindle, and means on said chucking ringito
,6..ln .a chucking device for crankshafts, a
maintain said crankshaft properly gripped-in. said _
chucking ring independent of the driving action chucking ‘ring comprising’ clamping members,
vmean-saomsaid members for holding them in ?rm
of said spindle.
I ‘
'
'
V2,'A chucking device for crankshaftsgcompria‘ ieng'agement >withmremachined' peripheral locat
15
ing a rotatable work spindle, =a chucking ring ing areaslonrw crankshaft web, means on at least
applicable to a ?nished locating area on a crank *oneof said=membersadapted to engage arcuate lo
shaft, abutment means on ‘said spindle-adapted catingsurfaces gonna rotatable work spindle for
accurately centering said chucking ring and said
to engage said chucking ring whereby said chuck
‘crankshaft
on said work spindle, some of said 20
ing
ring
is
driven
in
properly
located
position
on
20
locating
surfaces
son ..said .work .spindle =serving
said 2spindle, means :on .said ,i chucking ring .to
maintain rsaid crankshaft .properly- engaged and also .to v.cause-lsai'd .work .spindle .to drive ., said
chucking -,ring,.andlmeans .on.said..chucking ring
chucking ring engaging (an ‘unmachined ‘portion ‘ f or~_.positively driving .said‘ crankshaft.
' .7...In lapchucking .device .for ,crankshafts, .a
25 of ‘said crankshaft .to-positivelydrive said gcrank
chucking ring‘ comprising .a pair .of clamping
located in said'chuckingivringvand meansronsaid
shaft.
.
i
~
7.
-
_ ‘3. .In'a chuckingdevice for? crankshaftsa chuck
ing-ring comprisingéa-pair of semi-circular mem
30
ripheral ‘locating areas on .a crankshaft .web,
surfaces on. said members adapted-to be engaged
with'peripheral locating surfaces on a crankshaft
gage arcuate locating .surfaces .on \-a ‘rotatable
when swung toward-each other?means on‘said
ing ring adapted ,to engage mating. concave sur
faces on a rotatable work spindle; and means on
said ‘work spindlerto zdri-ve ~ said; chucking ring and
to vmaintain proper engagement of-the surfaces
of .said chucking ringand said work "spindle.
40
them in; mm engagement _.with ,premachined . pe
bershinged together, at one of their ends, concave
member-s forlholding said members engagedzwith
said-crankshaft, convex surfaces on~said chuck
735
members, Lme'ans .on .said members .for .holding
.4. In. a; chucking device for crankshafts,a chuck
ing ringv comprisinga pair of semi-circular- clamp
ing ‘members, ‘meansson said . member forholdng
_ them'in-?rm engagement withjrpremachined lo
eating areas-on'la crankshaft web,rm,eans on at
45 least one of vsaid ‘members adapted to engage
a2
meanson .one .of >said,menibers adapted .to .en
work spindlefonaccurately centeringsaid chuck.
ing ringv andsaidcrankshaft on-saidwork spin
dle, means associated .with said .other' clamping
member andsaid workspindle to .;force said clamp 3.5.
ing, ring into engagement .with .said: arcuate ~lo
eating surfaces and ‘.to drive saidchucking .ring
when .saidspin'd-lei is rotated, ».and-means on. said
chucking
shaft.
-for ypo‘sitively .driving .~said ~ crank;v ,
,
,
_
,
'
‘.8...In_-a chucking device “for .crankshafts, ta
chucking ring, means ‘.on .said chuckingring for
clamping :..said .ring ‘.to .a ‘premachined .locating
surf'aceon .a web .ofiacrankshaft, ,means on’. said
ring to engage .aslo’cating ' surface .on. a rotatable 45
locating surfacesaonla rotatable work spindle for
work spindleiforcenteringsaid chucking ring and
crankshaft on said work spindle, some :of .said
work sriindlewherebyIsaid: chuckingringis main
accurately. centering ; said chucking ring . and ‘said ' said crankshaft in .said lwork.spindle,'-and .means
locatingjsurfaces on .said work spindle serving
50 also to cause said work .spindlejtofdrive said
chucking ringrand means onsaid ‘chucking ring
for positively. driving. said . crankshaft.
..5.1In Ia .chucking device for .crankshafts, ,a
chucking. ring comprising. a; pair. of hinged. clamp
on 1said=ring_to.engage ,adrivingabutmenton said
tained in .lproper engagement with said ‘locating
surface ,on .said Jspindle ,when said spindle is
rotated.
v
.
i
.
.
WILLIAM ' F. GROENE.
WALTER 1R. ..1VIEYER.
Документ
Категория
Без категории
Просмотров
0
Размер файла
384 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа