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Патент USA US2409164

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A2,409,160
E. SIRP
WORK SUPPORT
Filed June 29, 1944
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Filed June 29. 1944
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2,409,160
Patented Oct. 8, 1946
Unirse srres- PATENT orifice f
WORK SUPPORT
Emil Sirp, Downers Grove, Ill., assigner to West
kern Electric Company, Incorporated, New York,
N. Y., a corporation of New York
Application June 29, 1944, Serial No. 542,760
6 Claims.
l
This invention relates to work supports and
more particularly to a work supporting jig for
mounting work upon the bed of a machine tool
during machining operations.
The invention is particularly useful inthe
manufacture of anode inserts Íor'magnetron type
vacuum tubes. Such an insert may comprise an
annulus of copper with an outside diameter of
(Cl..77-62)
will more fully appear from the following de
tailed description, taken in conjunction with the
accompanying drawings in -which
Fig.. 1 is a plan -view of a work supporting jig
embodying the features of this invention;
Fig. 2 is a longitudinal vertical vsectionV taken
on the line 2-2‘ of Fig. 1;
j
1 'r‘
.
Fig. 3 is a side view of the two jig plates carry
ing the drill guides, the aligning `pin and an .anode
.595", in which twelve apertures of .079" diam
eter are to be drilled in concentric arrangement 10 insert to be drilled, shown in separated .relation
with respect to a preformed central aperture of
.204” diameter, from which twelve preformed
slots of .021” in width extend radially, each of
which is to communicate with one of the smaller
before assemblage;
.
.
Fig. 4 is a transversevertical irregular section
taken on the linell-diof Fig. l;
Fig. 5 is an `enlarged fragmentary*transverse>
vertical
section taken Aon the line 5-«5» of ‘.Fig.,
15
apertures which are to be so located that the
1; and
.
longitudinal median lines of the slots coincide
Figs. 6 and 7 are enlarged fragmentary bottom
with the axes of the central and smaller aper
and plan views of the upper and lower jig >plates.
tures. Great difilculty has been encountered in
taken
on irregular lines ¿lì-_6 and 'If-l, 'respec->
so locating the smaller apertures to be drilled due
_ .
. ,
‘ ,.
to the minute dimensions involved and the high 20 tively, of Fig. 2.
Referring to thedrawings, particularlyitoyFigs.
degree of accuracy required in aligning the small
1 and 2, the work supporting jig zin the present'
er apertures with the slots.
embodiment comprises two rectangular shaped
An object of the present invention is to pro
steel plates I0 and II providedateach end Vwitni
vide a practicable and eñicient work support for
25 a pair of feet I2 for supporting the :assembled
handling work of the nature described above.
jig when in use upona bed >of a drill press. (not.
In accordance with the above object, the'pres
shown) »or in supporting each plate when the jigy
ent invention, in one embodiment thereof, as ap
plied to a drill jig for supporting an anode in
sert of the type described hereinbefore, for use
in magnetron vacuum tubes, comprises two
aligned plates between which the insert is
clamped, the inner opposed faces of the plates
having shouldered apertures for receiving in iiush
relation two annular shaped drill guides having
their inner opposed faces abutting the outer
is disassembled. In the latter case, the plateV I0
is rotated 180° from the position shown `in Figs.
1 and 2. The plate I0 carries at each end inter
mediate the feet I2 a vertical aligningipin |13, the
pins being arranged to freely enter» _apertures
I4 Vsimilarly «arranged in the plate II. Also
carried by theplate .-Iil lat its lef-t end (Figi) is‘a
, stop or gauge member I'I, which `maintainer-he
space between the'assembled plates at such sendA
parallel faces of the insert. The drill guides are
of the >assembled plates to the thickness lof an
each similarly provided with a series of drill guld
anode insert I8 interposed îbetween the :plates
ing apertures arranged on centers and having
adjacent 'the opposite ends thereof. The upper
diameters corresponding to the apertures to be
end face of the insert I8 abuts the lower `face of
drilled in the insert, the central apertures of the
the plate I0, in which is carried an :annular drill
guides having a dimension similar to that of the
guide I9 flush with such face of the plate, while
central aperture of the insert. Formed in the
the
lower face of the insert abutsthe upper end
peripheral walls of the central apertures in the
face of an annular drill guide '2,0 carriedin and
guides are radially extending short slots arranged
on centers corresponding to the slots in the in 45 flush
the plates
with the
I0 and
upper
I.I face
are parallel
of the plate
whenAI the
I.4 ljig is
sert. After a preliminaryaligning of the drill
assembled
and
in
use.
For
the
purpose
.of limit
guide slots with those of the insert, an aligning
ing any unparallelism of the plates yIll and :II
pin formed with radially extending teeth cor
which may occur, the plate Iû carries adjacent
responding in number and arranged to fit closely
into the aligned slots of the drill guides and in 50 each end a pair lof pins 2I, which 'normally are
spaced a few Athousandths of .an inch from Vthe
sert is inserted to finally align the slotted parts.
upper face of the plate II (Fig. 2).'
f
Means including a cam lever is provided for re
‘The anode insert I8, as hereinbefore described,
taining the jig plates, drill guides and'insert in
comprises an annulus of copper 'in which is tobe
operative assembled relation.
Other. objects and advantages of this invention 55 drilled, in the present example, vtwelve aperturesl
2,409,160
.
y
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4
3
24 (Figs. 1, 5 and 7) arranged concentrically rela
tive to a preformed central and larger aperture
25, from which radially extend twelve preformed
slots 26, each of which is to communicate with
to its full line position (Fig. 1), enters the cam
slot 52 of the post 49 and in cooperation there
with clamps and holds the parts together.
To assemble the jig plates I0 and II, each car
rying its respective drill guide I9 and 2U retained
one of the apertures 24 on a line coinciding with Ci
the axes of the apertures 24 and 25, the diameters
therein in the manner previously described, the
of the anode, 4central and smaller apertures and
aligning pin 34 and an anode insert I8 accurately
.the communicating'slots vbeing of the' dimensions
previously mentioned;
`
‘
Formed in the plates I9 and II are aligned
shouldered apertures 21 and 28 (Figs. 5, 6 and 7)
for receiving the drill guides I 3 and 20, respec
tively, the apertures having their outer smaller
ends flared for clearance purposesf, »Each of the
drill guides is similarly formed with fa series of
drill guiding apertures 3I arranged on centers and
having diameters corresponding to the apertures
24 to be drilled in the anode insert I8.V Also
formed in each of the drill guides I9 and 20 are
angularly positioned and clamped between the
plates, the following procedure may be employed:
Referring particularly to Fig; 3, wherein the
Darts are shown in separated relation, .the align
ing pin 34 may be flrst inserted in the aperture
32 of the drill guide 20 with the ribs 35 of the pin
riding snugly into the slots 33 of the guide.
Thereafter, the anode insert I8 is threaded onto
the pin 34 with the pin ribs 35 snugly ñtting the
slots 26 of the insert. The plate I0 is then aligned
with the plate II and lowered into position Vto
thread the aligning pin 34 through the aperture
central apertures 32 having radially extending 20 32 of the drill guide I9 in the manner of thread
relatively short slots 33 arranged on centers cor
ing the pin 34 into the aperture 32 of the drill
responding to and similar in width `to the slots
guide 20, previously referred to. At the same
26 of the anode insert I8. In order to accurately
time, the post 49 is threaded through the aligned
position .the drill guides I9 and 29 with respect
aperture in the plate I0. As thus arranged, the
to the insert I8 to be drilled so that the axes of 25 drill guiding apertures 3I of the guides I9 and 20
the apertures 24 to be drilled in the insert I8 will
will be in accurate axial alignment and the slots
coincide with the median line of the preformed
26 of the anode insert I8 to be drilled will be accu
slots 26 thereof, an aligning pin 34 is provided
having a series of longitudinally extending teeth
rately centrally aligned on lines passing through
the axis of the apertures 24 and 25 of the insert.
or ribs 35 arranged on centers corresponding to 30 After rocking the cam lever 54 to its full line posi
the slots 33 of the drill guides I9. and 20 and the
tion (Figs. l and 4) to clamp the parts together,
slots 26 of the insertIB and in which they snugly
the anode insert I8 is ready to have the apertures
fit when the jig and insertare assembled for drill
24 drilled therein by the drill 4I, the jig being
ing operations, which assemblage will be pres
mounted upon the bed of a drill press in any suit
ently described. To facilitate the entrance of the 35 able manner.
pin 34 and its ribs 35 into the apertures 32 and 25
What is claimed is:
and slots 33 and 26, opposite ends of the pin and
1. A work support and tool jig for guiding a
its ribs are bevelled, as indicated at 38, and the
tool to a predetermined point on a work piece
opposite ends of the walls of the slots 33 are also
having a preformed aperture and a slot extend
bevelled at 39.
»
‘
40 ing therefrom with which said point is to be ac
The apertures 3| of the drill guide I9 are
curately located comprising apertured supports
bevelled atl40 for guiding avdrill, indicated in bro
between which a work piece is supported, adjust
ken loutlne at 4|, into the aligned aperture. A
able tool guides between said supports abutting
notch 42 in the periphery ofeach of the drill
opposite faces of a work piece, each of said guides
guides I9 and 20 and cooperating pins 43 ñxed in
having an aligned central aperture and alignable
the plates I 0 and I I serve to initially arrange thetool guiding apertures, said central apertures
drill guides in substantially their desired posi
having alignable slots extending therefrom and
tions, the notches being of such dimensions that
similarly located relative to the tool guiding aper
the guides will rotate slightly in one direction
ture as said work piece slot is to said point, andl
or the other when the pin 34 is mounted in posi 50 an aligning member enterable into said central
tion to ñnally accurately align the guides with the
apertures of the guides and work piece and hav
insert I8 to be drilled. ‘ To retain the drill guides
ing a peripheral projection fitting into the align
I9 and 29 in the plates I0 and II, respectively, a
able slots of the guides and work piece.
pair of diametrically `'opposite screws 46» are
'2. A work support and tool jig for guiding a
threaded into each of «the plates until the inner 55 tool to a predetermined point on a work piece
annular face of the heads of the screws abut the
having a preformed aperture and a slot extend
adjacent face of the plates. In order to facilitate'
ing therefrom with which said point is to be
the escape of .the drill shavings or chips and also
accurately located comprising separable supports
in the cleaning of the jig, the drill guide, upon
between which a work piece is supported, an
its lower face, is centrally counterbored at 41 and 60 nular tool guides rotatably carried in inner op
notched therefrom to its periphery at four equally
posed apertured faces of said supports and abut
spaced points 48 (Figs. 5 and 6) .
ting opposite faces of a work piece, each of said
After complete assemblage of the jig and anode
guides having aligned central apertures and
insert I8 to be drilled, as shown in Figs. 1, 2 and 5,
alignable tool guiding apertures, said central
the parts are clamped together by the-following 65 apertures having alignable slots extending there
means. Fixed to the lower face of and extending
from and similarly located relative to the toolA
through an aperture in the plate II (Fig. 4) is a
flanged post 49 formed adjacent its upper end withï
guiding aperture as said work piece slot is to said
point, an aligning pin enterable into said central
a horizontal cam slot 52. The plate III is pro-'
apertures of the guides and work piece and hav
vided with an aperture for receiving the upper 70 ing a peripheral projection fitting into the align
end of the post 49, the bottom face of the cam slot
able slots of the guides and work piece, and
52 being in thegplane 'of the >upper face of the
means for releasably maintaining said supportsv
plate I0. Pivoted at 53 tothe plate V.III is a Vcam
and guides in clamping relation with the work
lever 54 vhaving acamV face 55,.;which, when the
lever» is rocked from _its _broken outline position 75
piece.
.
_
.
_
i
3. A work support and tool jig-for guiding a
2,46%), ico
5
tool to a predetermined point on a Work piece
having a preformed aperture and a slot extend
ing therefrom with which said point is to be ac
curately located comprising separable supports
between which a Work piece is supported, means
for maintaining said supports in accurate align
ment, tool guides carried in and capable of slight
rotation in inner opposed apertured faces of said
supports and abutting opposite faces of a Work
piece, means for predeterminedly limiting such
rotation of said guides, each of said guides hav
ing aligned central apertures and alignable tool
guiding apertures, said central apertures having
alignable slots extending therefrom and simi
larly located relative to the tool guide aperture
as said work piece slot is to said point, an align
ing pin enterable into said central apertures of
the guides and Work piece and having a periph
eral projection fitting into the alignable slots of
the guides and work piece, and means for re- ~.
leasably maintaining said supports and guides in
clamping relation with the Work piece.
4. A Work support and tool jig for guiding a
tool to predetermined points on a Work piece
having a preformed aperture and slots extend
ing therefrom with which said points are to be
accurately located comprising separable supports
between which a Work piece is supported, means
6
a
a series of alignable slots extending therefrom
and each similarly located relative to the tool
guiding apertures as said Work piece slots are to
said points, an aligning member enterable into
said central apertures of the guides and Work
piece and having a series of peripheral projec
tions fitting into the alignable slots of the guides
and Work piece, and means for releasably main
taining said supports and guides in clamping re
lation with the Work piece.
5. _A Work support and tool jig comprising a
plate having an aperture, a work piece support
freely rotatably mounted for limited rotation in
said aperture and having a tool guiding aper
ture, means carried by said plate cooperating
with a formation on said support for predeter
minedly limiting the rotation of said support, and
a member having peripheral formations engage
ab-le in alignable slots formed in central aper
tures in said support and the work piece to main
tain said support and Work piece in predeter
mined alignment.
6. A Work support and tool jig comprising
apertured plates between which a Work piece is«
supported, Work piece supports freely rotatably
lmounted for limited rotation in the apertures of
said plates abutting opposite faces of a work
piece and having alignable tool guiding aper
tures, means carried by said plates cooperating
for maintaining said supports in lateral, longi
tudinal and parallel alignment, tool guides rotat 30 with formations on said supports for predeter
minedly limiting the rotation of said supports,
ably carried in inner opposed apertured faces of
said supports and abutting opposite faces of a
work piece, means on each of said supports co
operating With peripheral notches of said tool
guides for permitting slight rotary movement of
said supports, each of said guides having aligned
central apertures and a series of alignable tool
guiding apertures, said central apertures having
and a member having peripheral formations en
gageable in alignable slots formed in central
apertures in said supports and the Work piece to
maintain said supports and Work piece in prede
termined alignment.
EMIL SIRP'.
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