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Патент USA US2411621

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Nov. 26, 1946.
ID. '5. GRUBBS
ALIGNING BAR
2,411,621
’
FiledJune 28; 1945
INVENTOR.
-
DAVID
S.
GRuBBs
"BY
'
.
ATTORNEY
2,411,621
Patented Nov. '26, 419461
PATENT" twice, ’
UNITED‘ 1 STATE,
2,411,621“ '
I
I
'
ALIGNINGjBAR"
'
David.- S. Grubbs, Cleveland, Ohio,’ assignor, by ,- 1
'
. mesneassignments, to Jack 8t._Heintz Pre-
z“ I
'
cision Industries, Inc., Cleveland; Ohio, a. core
poration of , Delaware
Application June 28, 1945, Serial-No. 602,107- 5
4 Claims. (01. 82-455‘)
This invention relates- in general to aligning
bars for use in aligning thetool carriage with the
work holder of an automatic metalworking ma
chine, and has for‘ one. of its primary objects to
provide an aligning bar with means whereby its
spindle may. be universally adjusted with respect
, to the workholder.
With the} foregoing and other objects in view
the invention resides‘ in the combination of parts
and in the details of construction hereinafter set
forth in the following speci?cation and appended
claims, certain embodiments thereof being illus
trated in the accompanying drawing, in which:
Figure l is a view partly in side elevation and
partly in longitudinal section of the aligning de
vice assembly including a part to be engaged by
a work holding chuck, a member radially adjust
.2
against axial movement there is provided a two
piece centrally, apertured plate H which, is. ad
justably. secured. to ?ange 3,._by» a series. of Allen
head screws 2?. passing; through. plate 21 and into
screw-threaded. engagement with,v ?ange .3. to re-.
tain plate 4 between plate 21 fand?holderplate 2.
_ In. machining operations it is essentiaLto cen
terthe rotatingv work holding; chuck with‘ respectv
to the tool carrying carriage that is linearly mov
able to bring the machine tool into and out of
engagement with the work. The purpose of the
device whose construction has been described is
to center the spindle IS with respect to the work
holding chuck. Conventionalmeans may be em;
ployed to determine whether the spindle, when
rotatably driven by the assembly of Figure 1
, which is rotated by the rotating workeholding
chuck, is describing a true circle about its own
axis and equal in diameter to that of the spindle.
with respect to this member about a ball and
The adjustment nuts 9, I0, II and I2 in their
.20
socket joint;
end abutment with the four ?atsides 5, 6, ‘I and
Figure 2 is a view in section taken along line
8 of ?ange 4 affords a means of radial adjust
able therein and a spindle universally adjustable
2-2 ofFigure l; and
ment of ?anges 4, I4 and I8 and spindle IS with
respect to_ the holder plate 2, its shank, I and
3-3 of Figure l.
,
25 the rotatable work holding chuck. The adjust
Referring more particularly to the drawing, the
ment nuts‘ I5, “Send I‘! and ball 20 interposed
shank I of a holder plate 2 is adapted tobe held
between ?ange I4 and spindle ?ange I8 affords
in the chuck of a work holding device. The plate
a means of universal adjustment of the spindle
has a circular ?ange 3 to loosely receive a plate 4
with respect to shank I and the work-holding
of appreciably lesser outside diameter than the
chuck in addition to the radial adjustment pro
inner diameter of ?ange 3. Plate 4 has four ?at 30 vided for by bolts 9, I0, II and I2. These two
sides 5, 6, ‘I and 8 and ?ange 3 has extending , types of adjustment may be made in any sequence
Figure 3 is a view in section taken along line
therethrough four screw bolts 9, II], Hand I2 in
screw-threaded engagement with the ?ange.
These bolts abut the four ?at sides and adjust
ment of the four bolts effects a radial adjustment
of plate 4 with respect to ?ange 3 and conse
quentlywith respect to shank I and the center
line of the work holding chuck.
Integral with plate 4 is a hollow shank I3 on
whose other end is an integral plate I4 which has
three holes to receive three screw bolts I15, I6 and
IT to which screw-threadedly engage the circular
until the proper and accurate alignment of the
spindle has been accomplished so that in its rota
tion it will describe a true circle about its own
axis and equal in diameter to that of the spindle.
The subsequent alignment of the tool carrying
carriage with respect to the spindle assures the
proper alignment of the tool with‘ the work to
a high degree of precision. The unique and novel
feature of the aligning assembly, its simplicity
and compactness of design to form a self-con
tained unit which provides a radial as well as a
?ange I8 of an elongated hollow spindle I9 for
universal adjustment of the spindle with respect
purposes of adjustment of the relationship be
, tween the spindle and plate 14 and consequently 45 to the work-holding‘chuck for aligning purposes.
I claim:
‘
with respect to shank I and the work-holding
1. An aligning bar assembly for aligning the
chuck. The adjacent hollow surfaces of the shank
tool carriage with the rotatable work-holding
l3 and spindle I9 are provided with opposed
chuck of a metal working machine, said assembly
spherical seats to receive a ball 20 which'main
includingv a shank to be engaged and'driven by
tains ?anges Iil and I8 appreciably spaced apart.
said chuck, a ?ange rigid with said shank for
~ Thus an adjustment of nuts,I5,.I6'and ‘I'I pro- receiving in loose ?atwise engagement a smaller
vides a means for universal adjustment of ‘spindle
?ange and means for releasably securing said
l9 about the ball with respect to ?ange I4 and
?anges together and for adjusting the same ra
consequently with respect to shank I and the
Y work holding chuck. In order to retain plate 4 ' 55 dially with respect to each other, a third ?ange
2,411,621
rigid with said smaller ?ange, an elongated hol
low spindle having an end ?ange and means for
releasably securing said third ?ange and said
spindle ?ange and for adjusting the same uni
versally with respect to each other.
2. An aligning bar assembly for aligning the
tool carriage with the rotatable work-holding
chuck of a. metal working machine, said assembly
including a shank to be engaged and driven by
4
shank ?ange for adjustment of said smaller
?ange radially with respect thereto, an elongated
hollow spindle having an end ?ange, a ball inter
posed between the spindle ?ange and said third
?ange and of such size as to space the same apart
and means for releasably connecting the same
together and for adjusting the spindle ?ange uni
versally with respect to said third ?ange.
4. An aligning bar assembly for aligning the
, said chuck, said shank having a ?ange, a second 10
tool
carriage with the rotatable work-holding
?ange releasably secured thereto and radially ad
chuck of a metal working machine, said assembly
including a shank to be engaged and driven by
said chuck, said shank having a ?ange, a second
dle having an end ?ange, a ball interposed be-'
tween the spindle ?ange and said third ?ange and 15 ?ange releasably secured thereto and radially ad
justable with respect thereto, a third ?ange rigid
of such size as to space the same apart and
with said second ?ange, a hollow stem rigid with
means for releasably connecting the same to
said second and third ?anges and extending
gether and for adjusting the spindle ?ange uni
therebetween, an elongated hollow spindle having
versally with respect to said third ?ange.
3. An aligning bar assembly for aligning the 20 an end ?ange and adjustment bolts passing there
through and through said third ?ange, the ad
tool carriage with the’ rotatable work-holding
jacent inner ends of said hollow stem and spindle
chuck of a metal working machine, said assembly
having opposed spherical seats to receive a ball
including a shank to be engaged and driven by
of
such size as to space the adjacent end ?anges
said chuck, a ?ange rigid with said shank for
of
hollow stem and spindle apart whereby
receiving in loose ?atwise engagement a smaller 25 thesaid
adjustment bolts passing through said last
?ange the latter having a plurality of ?at edge
named ?anges affords a means of universal ad‘
portions to be engaged by end abutment by screw
justment
of said spindle with said hollow stem.
bolts extending radially inwardly through said
DAVID S. GRUBBS.
justable with respect thereto, a third ?ange rigid
with said second ?ange, an elongated hollow spin
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