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Патент USA US2407472

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Sept. A10, 1946.
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Ü
R. BURK ‘
ROTARY ToòL ADAPTER
v
Filed Deç. T1, 1944
' 2,407,471
Patented sept. 1o, A194.6
2,407,411 ` '
fr f OFFICE
UNITED, STATES
v
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«2,407,471
y
ï .ROTARY TooLnnAr’rEa
Y
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Robert Burk, Brazil, Ina., assigner' kor :one-halma
W. C.'Brockmeier, Brazil, Ind., :and/.one-.half tor
M. R..Harding, Greenville,Mich.
‘
‘Application Deeemberil, 1944,'s- er'iarNo. vl567.676
2 Claims.
The invention relates-to a milling machine at
tachment, ‘and more `especially to a rotary-tool
adapter 'for-use on Aa milling machine.
(01.7.279-¿103J
V,Similar l'reference ‘characters indicate corre
sponding parts vtl?iroughout the several views in
the drawing.
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l
‘
,
The primary 'object' of the invention is the pro#
vision of an adapter `of >this character, 'wherein
‘the'tool to "b'e‘used‘in‘the "milling` machine is ap
plied in the Jconventional manner, and when it
Referring tothe-¿drawing infdetail, A designates
generally a portion `ofthe adapter-in its entirety,
amillingïma'chine, -for drilling, reaming, spot fac
Vri‘ransversely of- the body I0' is lthe drift hole
constructed-in accordance with the invention, and
is ‘practically conventional in its `complete »exter
'is ¥required to removeithe tool, thisA being accom- y
nal appearanc'eywith those now in use 1in milling
‘plishe‘d lwithout removing the adapter therefor,
machines. The adapter comprises, in this in`
the tool removal -being effected through the-serv 10 stance, a ~truncatedy conica-l shaped body -' Ifû, Ihavice of a hydraulic ejector, which is under the ccn
Ving for a portion of its length -the 'ordinary ltool
trol of’a'singleï'attendant for the milling machine. ‘ , receivingsocket -I Igwhic'h'as usual opens through
Another 7object of the invention is‘the provision
thel argerendd 2 ofthe b‘o‘dy, for `the introduction
'of ¿an adapter >of this icharactfer, `wherein ~for the
-of the tool fit, whichffo‘r example',` is V'adrilL ‘of
-removal `of Ava rotary ~'-too`1, »such as those used `in 15 ‘standard construction. ,
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ing,»or `other fmilling work, can be conveniently
I4 which communicates with the socket Ill. tThe
releasedfrom its holder, with »dispatch and ease,
'dr'ili'iil lor'other tool: has 'a tapered shank yIï5>and ,
vat the location of su'chholder, and through hy
atan-g Iiiatth‘e send thereof formed vas usualiin
draulic pressure underaV hammer blowen-'a plung 20 cross section substantially rectangular vor lother
er, which is "exposed for this purpose.
>wise'with'lateral facets i1. Exampling the usual
A Vfurther object of the inventionis the `provi
Yconstruction “the vsocket IIr Vis tapered linwardly
sion 1.0i .an :adapterzof this acharacterfwherein the
conforming‘to the tapered shank I5 ofthe tool
<constructionthereof .is novel .and unique inthe
for tight-fit offtheïlatter/within the said socket.
arrangement of -its parts and'îthe working thereof,
The vtang Ifiiengages in kthe drift hole I4, 'as best
the adapter being retained in lthe machine and
seen in Figure l of the drawing, Aandthe 'facets
does not require removal for the changing of tools
I'l eliminate the vrotation ~of the `tool'within the
as may'îbenecessary for the execution of differ
socket I I, as the tang Vlocks the said tool therein.
ent characters of work by the said machine.
In thesmall end `»I8 'of the’body >IIl'is >a screw
A still further object of the invention is the 30 threaded plug socket I9 for a threaded plug 20,
provision of an adapter of this character, which
detachable therefrom, the plug socket I9 being
is simple in construction, thoroughly reliable and
in communication with an oil chamber 2 I, which
efficient in operation, strong, durable, possessed of
confronts an ejector pin 22, having fluidtight f1t
few parts, readily and easily operated,’requires
ting with a clearance 23 therefor, and this pin
little or no repairs, thus economical for continued 35 is adapted for direct striking contact with the
service, devoid of a complicated structural set
tang I6 when extended within the drift hole I4,
up, and inexpensive to manufacture and install.
as best seen in Figures 1 and 3 of the drawing.
With these and other objects in view the inven
l The plug 2S is formed with a flat faced wrench
tion consists in the features of construction, com-' `
engaging head 24 at its outermost end, while
bînation and arrangement of parts as will be 40 provided in this end and carried through the
hereinafter more fully described, illustrated in , head till is an internally threaded socket 25, so
the accompanying views in the drawing forming
that the adapter A can be detachably fastened
a part hereof, which shows the vpreferred embodi
to a driving arbor, not shown, of a milling ma
ment of the invention, and pointed out in the
chine, which also is not shown in the drawing.
claims hereunto appended.
45 However, the adapter may be otherwise fitted
In the accompanying drawing:
to the milling machine, for the holding of a tool
Figure 1 isa view showing the 'adapter in ver
required to be operated thereby.
n
`
tical section, as constructed in accordance with
The plug 2U at its inner end is Áprovided with
the invention, with a tool held by the adapter.
a check or stop 26 in the path of the pin 22, to
Figure 2 is a transverse sectional View taken
limit the throw thereof in one direction, and
approximately on the line 2-2- of Figure 1 look
Athus avoid such pin leaving its clearance 23 when
ing in the direction of the arrows.
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retrieving within the adapter A.
Figure 3 is a view similar to Figure 1 showing
Formed longitudinally in the body Ill eccentric
the adapter operated with the tool ejected there
to the tool socket II is an oil passageKZ‘I, which
from.
55 at its inner end opens into an enlarged area 28
2,407,471
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to the oi1 chamber 2|, while the outer end of this
passage has associated therewith a countersunk
packing gland 29, through which operates a slid
able plunger 30, the latter being extended for a
distance into the passage 21, and at the outer end
of such plunger is formed a striking head 3I,for
receiving a hammer blow to compress oil filling
the said chamber 2I and passage 21, so that
4
tary tool therefor having a Morse taper tanged
shank, comprising an elongated truncated coni
cal body having a centrally located socket with
a drift hole for a portion of its length and open
ing through the larger end for accommodating
the tool shank and the engagement of the tang
in the drift hole, the said body further being
formed with an oil chamber opening through its
smaller end and aligned with the drift hole, a
when the plunger is forced inwardly of the latter
the oil under compression will actuate the pin 10 removable plug fitting the smaller end of the
body for closing the oil chamber and effecting a
22 for ejecting the tool I3 from the adapter A.
The larger end I2 of the body IIJ externally Y driving coupling between the said body and the
machine, an ejecting pin within the body be
thereof is provided with diametrically opposed
tween the socket and the oil chamber for contact
key slots 32 for use in applying the adapter A to
the milling machine. However, this construction 15 ing the tank, and a hammer blow actuated
plunger slidably ñtted longitudinally in the body
may be altered, if found necessary or otherwise
required.
The pin 22 is formed with an enlarged head' ,
within the marginal area of its larger end and
extending generally in the direction of the socket
for action on the content of the oil chamber to
33, the clearance 23 being constructed to pro
20 displace the ejecting pin for removing the tang
.vide therefor in association with the pin.
of the tool shank from the drift hole.
`In the operation of the adapter A after the
2. An adapter for a milling machine and a ro
tool I3 has been ñtted therein, and it is desired
tary tool therefor having a Morse taper tanged
to change tools, the operator strikes the head
shank, comprising an elongated truncated con
3| with a hammer blow, the said plunger 30 being
ical body having a centrally located socket with
outwardly extended from the passage 21 a deter
a drift hole for a portion of its length and open
mined degree, with the head 3l exposed, and this
ing through the larger end for accommodating
blow results in displacing the oil within the pas
the tool shank and the engagement of the tang
sage and the chamber 2|, thus moving the pin
in the drift hole, the said body further being
22 to a position for ejecting the tool I3 from the
socket II. Whereupon the said socket II is 30 formed with an oil chamber opening through the
smaller end and aligned with the drift hole, a re
cleared for another tool, and the placement of
movable plug litting the smaller end of the body
such tool restores the adapter to normalcy, with
for closing the oil chamber and effecting a driv
the plunger projected from the passage 21 in a
ing coupling between the said body and the ma
reset condition. It will be apparent that the
chine, an ejecting pin within the body between
adapter A is a hydraulic ejector v'for a tool held
the socket and the oil chamber for contacting
thereby.
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From the foregoing it is thought that the con
the tank, a hammer blow actuated plunger slid
ably ñtted longitudinally in the body within the
struction and manner of operation oi the adapter
marginal area of the larger end and extending
A will be clearly understood, and therefore a
more >extended explanation has been omitted for 40 generally in the direction of the socket for ac
the sake of brevity. Furthermore, it is to be
tion on the content of the oil chamber to displace
understood that changes, variations and mod
the ejecting pin for removing the tang of the
iñcations may be made in the invention, as fall
tool shank from the drift hole, and a check ex
properly within the scope of the appended claims,
tension on the plug to limit the throw of the
lwithout departing from the spirit of the inven 45 ejecting pin toward the oil chamber.
tion or sacrificing any of its advantages.
What is claimed is:
1. An adapter for a milling machine and a ro
ROBERT BURK.
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