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Патент USA US2055888

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' Sept. 29, 1936.
‘2,055,888
G. F. YAGER ET AL
DRILLING ATTACHMENT FOR METALWORKING MACHINES
Filed Jan. 22, 1934
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INVENTORS
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ATTORNEYS
Sept. 29, 1936. ‘
G. F. YAGER ET AL
2,055,838
DRILLING ATTACHMENT FOR METALWORKING MACHINES
Filed Jan. 22, 1954
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ATTORNEYS
Sept. 29, 1936-v
2,055,888
' G. F. YAGER ET AL
DRILLING ATTACHMENT FOR METALWORKING MACHINES
Filed Jan. 22, 1934
'7 Sheets-Sheet 3
'
INVENTOR-S
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ATTORNEYS
Sept. 29, 1936.
2,055,888
G. F. YAGER ET AL
DRILLING ATTACHMENT FOR METALWORKING MACHINES
Filed Jan. 22, 1934
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7 Sheets-Sheet 4
- Sept. 29, 1936.
G. F. YAGER ET AL
I 2,055,888
DRILLING ATTACHMENT FOR METALWORKI'NG MACHINES
Filed Jan. 22, 1954
7 Sheets-Sheet 5
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INVENTORS
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Sept. 29, 1936.
G_ F_ YAGER ET AL
2,055,888
DRILLING ATTACHMENT FOR METALWORKING MACHINES
Filed Jan. 22, 1934
'7 Sheets-Sheet 6
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- Sept.‘ 29, 1936.
G. F. YAGER ET AL,
2,055,888
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DRILLINIG ATTACHMENT FOR METALWORKING MACHINES
Filed Jan. ‘ 22, 1934
7'Sheets-Sheet 7
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ATTORN EYE
2,055,888
Patented Sept. 29, 1936
UNITED STATES PATENT OFFlCE
2,055,888
DRILLING ATTACHMENT FOR METAL
WORKING MACHINES
George F. Yager and Oliver J. Heath, Toledo,
Ohio, assignors to The Bunting Brass & Bronze
Company, Toledo, Ohio, a corporation of Ohio
Application January 22, 1934, Serial No. 707,790
4 Claims.
This invention relates generally to drilling ma
chines and refers more particularly to drilling
attachments for metal working machines of the
type set forth in our application, Serial No.
5 639,354, ?led October 24, 1932.
One of the essential objects of the present
invention is to provide a drilling attachment of
the type described that may be readily applied to
the frame of such a metal working machine
10 preferably in place of or as a substitute for the
milling attachment set forth in said application
and that may be operatively associated with ap
propriate driving elements of such a machine.
Another object is to provide a drilling attach
15 ment wherein provision is made for adjusting the
drilling element vertically, horizontally and angu
larly relative to the work.
‘
Another object is to provide a drilling attach
ment wherein the drilling element is moved by
20 yieldable means toward and into the work and
is moved by cam means out of and away from the
work.
Another object is to provide a drilling attach
ment wherein the cam just mentioned for mov
25 ing the drilling element is alternately actuable
by a coil spring and by parts operatively asso
ciated with the driving elements aforesaid of the
metal working machine.
Another object is to provide a drilling attach
30 ment wherein the coil spring and parts just men
tioned are connected in such a way that the
(01. 77—32)
Figure 9 is a perspective view of the plate B;
Figure 10 is a perspective view of the bearing‘
35;
-
Figure 11 is a view similar to Figure 2, but
showing a slight modi?cation;
Figure 12 is a View taken at substantially right
angles to Figure 11;
Figure 13 is a. vertical section taken substan
tially on the line l3—l3 of Figure 11;
Figure 14 is a horizontal sectional view taken 10
substantially on the line l4—l4 of Figure 11;
Figure 15 is a perspective view of the bracket L;
Figure 16 is a perspective view of the plate M;
Figure 17 is a perspective view of the bracket K;
Figure 18 is a perspective view of the bracket J. 15
Referring now to the drawings, A is the frame
of a metal working machine of the type illus
trated in our application, Serial No. 639,354,
aforesaid, B is a plate adjustable horizontally on
said frame, C is a bracket adjustable horizontally 20
on the plate B in a direction substantially at
right angles to the direction in which the plate
B is adjustable, D is an upright plate pivoted on
a pin E projecting laterally from the frame A
and movable in an are over an upstanding por
and vertically projecting portions 2, 3 and 4, re
spectively. As shown, the plate B is recessed at
5 to receive a horizontal rib 6 of the frame A and 30
is provided at opposite edges thereof with spaced
spring is wound up by said parts while they are
elongated slots 1 that receive suitable attaching
actuating the cam.
means such as the bolts 8 which engage the
frame A. Any suitable means such as the screw
Other objects, advantages and novel details of
25
tion I of the bracket C, and F is a body adjustable
vertically on the plate D and having horizontally
apparent as this description proceeds, especially
9 journaled in an upstanding hearing In on the 35
frame A and threadedly engaging the plate B
when considered in connection with the accom
may be used as the means for adjusting said
35 construction of this invention will be made more
panying drawings, wherein:
Figure l is an end elevation of a metal work
40 ing machine with a drilling attachment embody
ing our invention applied thereto showing parts
broken away and in section;
Figure 2 is an enlarged fragmentary elevation
of the structure illustrated in Figure 1 with parts
45 broken away and in section;
Figure 3 is a view taken at substantially right
angles to Figure 2;
Figure 4 is a vertical sectional view taken sub
stantially on the line 4—4 of Figure 2;
Figure 5 is a horizontal sectional view taken
50
substantially on the line 5—5 of Figure 3;
Figure 6 is a horizontal sectional view taken
substantially on the line ii—% of Figure 3;
Figure '7 is a perspective View of the bracket C;
Figure 8 is a perspective view of the body F;
55
plate on the rib 6 of the frame.
Extending be
tween the slots 1 and disposed at substantially
right angles thereto are parallel keyways I I which 40
receive suitable keys such as l2. The base I3
of the bracket C has corresponding keyways l4
therein registering with the keyways H and re
ceiving the keys l2. Preferably an adjusting
screw l5 similar to 9 is employed for moving the 45
bracket C on the plate B. As shown, the screw
I5 is journaled in a sectional bearing 11 fastened
to an edge of the plate B and threadedly engages
the base 13 of the bracket C. Any suitable means
such as bolts is carried by the plate B and en 50
gaging elongated slots l9 and the base l3 may
be used to hold the parts together. The up->
standing portion l of the bracket C is disposed
at substantially right angles to the base l3 and
is preferably reinforced by vertical and horizon 55
2
tal webs 20 and 2|, respectively.
2,055,888
The front face
22 of the upstanding portion | is ?at so as to
facilitate movement thereover by the plate D,
while the upper edge 23 of said upright portion I
is preferably curved and provided with suitable
graduations 24. The upstanding portion I of the
bracket is also provided with upper and lower
rows of elongated slots 25 which are preferably
arranged in arcs concentric with the pivot pin E.
10 The upright plate D is elongated in form and has
a ?at rear face 26 engaging the ?at face 22 of
the bracket C. Any suitable means such as the
bolts 2'! extending through the slots 25 in the
upstanding portion I of the bracket C and
15 threadedly engaging the plate D may be used to
connect the plate D to the bracket and to hold
such plate in adjusted position on the pivot pin E.
The front face 28 of the upright plate D is pref
erably parallel to its rear face 25 and is pro
20 vided with parallel longitudinally extending key
ways 29, while the upper end 35 of said plate is
slightly arcuate and is preferably provided at the
inner edge with a graduation or mark 3| for use
in connection with the graduations 24 on the
25 upper edge of the bracket C.
The body F is pro
vided in its rear face with parallel keyways 32
. corresponding to and registering with the key
ways 29 in the front face of the upright plate D.
Any suitable means such as the keys 33 in said
30 registering keyways may be used to guide the
body F longitudinally of the plate D, while any
suitable means such as a screw 34 journaled in
a sectional bearing 35 upon the upper end of the
plate D and threadedly engaging the body F may
35 be used to effect such an adjustment. Prefer
ably the rear face of the body F is recessed at
36 below the threaded portion 31 thereof for the
reception of the screw 34.
In the present instance, the horizontally ex
tending portion 2 of the body extends over a
40
rotary work dial or turret H of the metal work
ing machine, while the horizontal portion 3 pro—
jects laterally from the body and is disposed at
45
substantially right angles to the portion 2. The
vertically extending portion 4 of the body is above
and at the rear end of the horizontal portion 2.
Preferably the work dial H corresponds to the
turret B in our application, Serial No. 639,354,
and is provided in its periphery with suitable
50
recesses 49 in which the work such as bushings or
bearings 4| may be carried. Any suitable means
(not shown) may be used to rotate the dial H.
Preferably the same means as that illustrated in
our application, Serial No. 639,354, is used, how
55 ever, such means forms no part of the present
invention.
4|’ is a quill slidably mounted in a vertical
opening 42 in the horizontal portion 2 of the
body, 43 is a spindle rotatably mounted within
60 the quill 4|’, 44 are ball bearings for the spindle
43, 45 and 46 respectively are inner and outer
races for said ball bearings, 4'1 and 48 respec
tively are retaining nuts for said races 45 and 46,
49 is a chuck of standard design ?xed to the
65 lower end of the spindle 43 below the nuts 41
and 48, and 59 is a drill carried by the chuck 49
and engageable with the work 4| in the dial H.
Preferably the construction is such that the work
4| is in proper position to be engaged by the drill
70 50 when the center 5| of each recess 49 in the
dial H is coincident with the axes of the pivot pin
E and drill 59. (See Figure 2).
53 is an electric motor mounted on the verti
_ cally extending portion 4 of the body and hav
75 ing a short shaft 54, 55 is a drive shaft sleeved
upon and ?xed to said motor shaft 54 and extend
ing axially and splined to the walls of an up
wardly opening socket 56 in the spindle 43.
In the present construction the drill 55 is moved
downwardly toward and into the work 4| by a 5
coil spring 5'! and is withdrawn and moved up
wardly from the work by a cam 58. As shown,
the spring 5'! is received in a vertical opening 59
in the horizontal portion 2 of the body and seats
upon the upper face of a collar 69 clamped upon 10
the quill 4| at the lower end thereof. A top
plate 6| on the horizontal portion 2 serves as a
closure for the upper end of the opening 59 and
as a backer for the upper end of the spring 5?
and receives and carries a suitable seal
for the 15
drive shaft 55. The cam 58 is ?xed to a shaft 63
journaled in a bracket 64 secured to the hori
zontal portion 3 of the body and is engageable
with a roller 65 on a stud 65 projecting laterally
from a block 61 secured to the quill 4|’. As
shown, this block Si is movable vertically in an
elongated slot 68 in the horizontal portion 2 of
the body.
69 is a pinion ?xed to the shaft 53 and mesh
ing with a gear sector ‘IE3 ?xed to a shaft TI 25
journaled in the bracket 64 and in a cylindrical
portion '52 of the body. Sleeved on and adjusta
bly secured to a lateral projection ‘I3 of the gear
sector 10 is a collar 74, while sleeved on the lat
eral projection 13 between and terminally secured
to said collar '14 and cylindrical portion 32 is a
coil spring ‘I5 for moving the gear sector 19 in
an anti-clockwise direction so that the cam 58
will move in a clockwise direction and let spring
51 move the drill 50 downwardly toward and
into the work 4|.
Sleeved upon and ?xed to the shaft 'II at the
outer end thereof is a tubular portion 5? of a
friction clutch element 18, while sleeved on the
tubular portion 71 between an adjusting nut 79
40
and the clutch element 18 is a pulley 33 having a
clutch face 3| engaging the clutch face 82 of said
element. Fixed to the pulley 85 is a cable 83 hav
ing an eye 84 at its lower end receiving a hook
85 pivotally connected to an arm 86 of a bell crank
lever 81 corresponding to lever 2 l 5 in our applica
tion, Serial No. 639,354, and pivotally mounted
at 88 upon the frame A of the metal working ma
chine. Preferably this lever 81 carries a roller
89 which engages a cam 95 on the cam shaft 9|
of the machine and is held in such engagement
by a coil spring 92 secured to the frame A.
In use, the drill 50 may be adjusted in a hori
zontal plane forwardly and rearwardly relative to
the work 4| in the dial H by turning the screw 55
9 and may be adjusted in a horizontal plane tan
gentially to the dial by adjusting the screw |5.
To compensate for short and long drills. the
body F may be raised or lowered on the upright
plate D by loosening and tightening the bolts 93, 60
while the plate D may be swung on its pivot pin
E upon adjustment of the bolts 27 to incline the
drill 50 relative to the work for drilling inclined
holes in said work. The drill 59 will be rotated
during rotation of the motor shaft 5/; regardless
of the position of the drill relative to the work
4| due to the splined connection between the
spindle 43 and drive shaft 55. When the bell
crank arm 86 is moved upwardly, the coil spring
15 will turn the gear sector '59 anti-clockwise and 70
thus cause cam 58 to let spring 5? move the drill
50 downwardly into the work in the dial 1-1.
When the bell crank arm 85 is moved downward
ly, the cable 83 will turn the shaft ‘ii and gear
sector 10 clockwise and will cause coil spring "I5 75
2,055,888’
to be wound up and cam 58 to be moved in an
anti-clockwise direction. As a result, cam 58
will raise the quill (4I’) and cause the [drill 50
to be withdrawn from the work to its raised po
sition. Of course the dial H will be rotated in
timed relation to the movements of the bell crank
lever 81 so that the work M will be in proper po
,
10
sition each time the drill 5B is lowered by the
spring 51. Any suitable mechanism such as that
illustrated in our application, Serial No. 639,354,
may be used‘for this purpose. Moreover, the
nut “I9 and collar ‘I4 may be adjusted as desired
to compensate for any timing irregularities or va
, riations in spring tension.
Likewise, the cam 58
may be removed and replaced by other cams of
different sizes when it is desired to vary the
stroke of the drill 50 relative to the work.
In Figures 11 to 18, inclusive, we have illustrated
a slight modi?cation in which the drill 50B is hori
20 zontally disposed instead of vertically and is en
gageable with the work 4| when it ‘is at one side
instead of at the top of the dial H. In detail, J
is a bracket ?xed to the frame A of the machine,
K is a bracket adjustable vertically on the bracket
25 J, L is a tilting bracketpivotally connected to the
bracket K, M is a plate adjustable horizontally on
the tilting bracket L in a direction transverse to
the dial H, and N is a body adjustable horizontally
on the plate M toward and away from the dial H.
30 Preferably the opposed faces I65 and IIII respec
tively of the brackets J and K are ?at and have
registering keyways I02 and I03 therein receiving
a suitable key I04. Any suitable means such as a
screw I65 threadedly engaging a stud I66 ?xed to
35 the frame A and bearing against the lower face of
the bracket K may be used to raise the said
bracket. Bolts I67 threadedly engaging the
bracket J and slidably engaging elongated slots
I38 in the bracket K, cooperate with bolts I09
at threadedly engaging the bracket K and slidably
engaging elongated slots H6 in the bracket J to
hold the parts together. As shown, the bracket K
straddles the bracket L and is preferably provided
with a graduation or mark I I I for use in connec
tion with graduations I I2 on the bracket L when
the latter is adjusted about its pivot I I3. In this
connection, it will be noted that the pivot H3 is
carried by the bracket K and that in addition to
bolts Ht threadedly engaging the bracket sides
I I5 and IIS respectively and slidably engaging
elongated slots I I‘! in opposite sides of the bracket
L, a turnbuckle I I8 is terminally connected to
studs III? and I2!) respectively, rigid with said
parts. Preferably an enlargement I2I of the
,
bracket K serves as an abutment for the screw
I55 and receives the stud I I9. The opposed faces
of the bracket L and plate M have registering key
ways I I3’ and I I9’ respectively which receive keys
I22 for guiding the plate M, and a screw I23 jour
(I 0 naled in a bearing I24 and threadedly engaging
the plate M is preferably used as adjusting means
for said plate. Preferably the bearing I24 is rigid
with one side of the bracket L and is received in
an upwardly opening slot or recess I25 in the
bracket K. The opposed faces of the plate M and
body N also have registering parallel keyways I26
and I2? receiving keys I28 for guiding the body N,
and the adjustment of said body on said plate is
preferably accomplished by a screw I29 journaled
in a bearing I30 ?xed to the rear edge of the plate
M and threadedly engaging the body. In this
construction an electric motor I3I is carried by a
horizontal portion I32 of the body in line with the
drill 5%, but the drive between the parts is the
same as in Figures 1 to 10, inclusive. The quill
I33 to which the chuck I34 is secured is moved
toward and into the work by a coil spring I35 and
is‘ moved out of and away from the work by a cam
I36. As shown, the spring I35 is received in the
horizontal opening‘ I 31 in the body and terminally
engages a collar I38 on the quill and an end plate
I 39 on the body, while the cam I36 is ?xed to a
shaft I46 journaled in a bracket MI ?xed to the
body and is engageable with a roller I42 carried by
a block I43 ?xed‘ to the quill. A pinion 'I 44 is ?xed 10
to the shaft I43 and meshes with a gear sector I 45
?xed to a shaft I45 journaled in aligned openings
in the body N and bracket I4I. A coil spring MI
is sleeved on a tubular projection I48 of the gear
sector and is terminally secured to the body N 15
and to a collar' I 49 adjustable on the projection
I48. Sleeved upon and ?xed to the shaft. I46 at
the outer end thereof is a tubular. portion I55 of a
friction clutch element' I5I, while sleeved on the
tubular portion I50‘ between an adjusting nut I52 20
and the clutch element I 5| is a pulley I53 having
a clutch face I54 engaging the clutch face I55 of
said element I5 I. Fixed to the pulley I53 is a cable
I56 having an eye I5'I at its lower end receiving a
hook‘ I58 pivotally connected to the arm 33 of the 25
bell crank lever 81.
In use, the drill 509“ may be adjusted in a hori
zontal plane forwardly and rearwardly relative to
the work M in the dial H by turning the screw I29
and may be adjusted in a horizontal plane trans 30
versely of the dial by adjusting the screw I23.
The body N may be raised or lowered on the brack
et J by turning the screw I65 after the bolts
I01 and I09 have been loosened, and may be swung
about the pivot I I3 upon adjustment of the turn 35
buckle II8 to incline the drill 5!!a relative to the
work for drilling inclined holes. When the bell
crank arm 86 is moved upwardly, the coil spring
I4'I will turn the gear sector I45 anti-clockwise
and thus cause cam I36 to let spring I35 move the 40
drill 5IIa into the work M in the dial. When the
bell crank arm 86 is moved downwardly, the cable
I56 will turn the shaft I46 and gear sector I 45
clockwise and will cause coil spring I4'I to be
wound up and cam I36 to be moved in an anti
45
clockwise direction. As a result, the quill I33 will
be moved to the right and will thus cause the drill
53a to be withdrawn from the work to its retracted
position. Of course the dial H will be rotated in
timed relation to the movements of the bell crank 50
lever 81 so that the work will be in proper position
each time the drill is moved to the left by the
spring I35. Any suitable mechanism such as
that illustrated in our application, Serial No.
639,354, may be used for this purpose.
55
What we claim as our invention is:
1. In a drilling machine, a work holder, a drill
spindle movable longitudinally toward and from
work in said holder, a cam mounted to oscillate
in opposite directions, means including a spring 60
for turning the cam in one direction, means for
positively turning the cam in the opposite direc
tion against the tension of said spring, means in
cluding a spring operable when the cam is turned
in the ?rst mentioned direction to feed the drill
to work in said holder, and a cam follower oper
able by the cam when it is turned in the second
mentioned direction to retract the drill from the
work.
2. In a drilling machine, a work holder, a drill 70
spindle movable longitudinally toward and from
work in said holder, a cam mounted to oscillate in
opposite directions, means for turning the cam in
one direction, said means being yieldable to per
mit turning movement of said cam in the opposite
4
2,055,888
direction, means for positively turning the cam
in the opposite direction, said last mentioned
means being reversible to permit movement of the
cam in the ?rst mentioned direction, the ?rst
and second means just mentioned being operable
alternately for actuating said cam, means includ
ing a spring operable when the cam is turned in
the ?rst mentioned direction to feed the drill to
work in said holder, and a cam follower operable
10 by the cam when it is turned in the second men
tioned direction to retract the drill from the work.
3. A drilling attachment for a, metal working
machine having a work holder, comprising a quill
movable toward and from the work holder, a cam
15 operable to positively move the quill away from
the work holder, a shaft for said cam, a second
shaft substantially parallel to the ?rst mentioned
shaft, 2, driving connection between said shafts, a
?rst spring for yieldingly turning the second
mentioned shaft in one direction so that the quill
will be released by said cam, a second spring op
erable when the quill is released by said cam to
yieldingly feed the quill toward the work holder,
and means subsequently operable to wind up the
?rst spring and positively turn the second shaft
and cam in the opposite direction so that the
quill will be positively retracted from the work
holder.
4. In a drilling machine having a work holder,
a rotating drill spindle movable toward and from
said work holder, a support for said spindle in~
cluding a reciprocating quill having two projec
tions at spaced points thereof, actuating means
for the quill including a ?rst spring and a cam,
said ?rst spring being engageable with one of said 10
projections for yieldingly feeding the drill spindle
toward the work holder, and said cam being en
gageable with the other of said projections to
positively retract the drill spindle from the work
holder, said cam being oscillatable in one direc 15
tion to retract the spindle and in the opposite
direction to permit the feeding of the spindle by
said ?rst spring, and actuating means for the
cam including a second spring and a rotary ele
ment, the rotary element being operable to turn 20
the cam in the ?rst mentioned direction, and said
second spring being operable to turn the cam in
the second mentioned direction.
GEORGE F. YAGER.
25
OLIVER J. HEATH.
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