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Патент USA US2406467

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Aug. 27, 1946.
E. M§LOONEY
2,406,467
FIXTURE FOR GRINDING- WHEEL AND TOOL FORMS
‘
Filed Aug. v5, 1944
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12 Sheets4$heet ‘1 'l
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Aug. 27, 1946.
E. M. LOOYNEY
2,406,467
FIXTURE FOR GRINDING WHEEL AND TOOL FORMS
Filed Aug. 5,‘ 1944
2 Sheets~§heet 2
Patented Aug. 27, 1946
V ‘
UNITED STATES ‘PATENT
2,406,467
OFFICE. -»
WHEEL' AND TOOL
Edward M. Looney, Watertowm'Mass. '1 v 7
Application August 5, 1944;‘Serial No‘. 548,157 -‘
4 Claims.’ (01. 51-220)
This invention relates to tool holders or ?x
tures, and more‘ particularly to a, universally ad
justable tool ?xture forholding tools of various
kinds for the sharpening or grinding operations
' .thereon, or for wheel dressing to various con- >
tours, or for performing various gaging or testing
operations.
An object of the invention is to provide an
improved universally adjustable tool ?xture, in
which the tool carrying member is arranged to
be quickly and easily set in anyone of a‘ plurality
of predetermined positions.
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2,
' ?tional views showingthe device in a plurality ‘of
positions and in association with ‘a grinding
wheel;
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., Figure 7 is. an'elevational view showing the
device arranged to support a tool for ‘the purpose
of dressing or truing a grinding wheel having a
convex
periphery;
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Figure 8 isaview similar to ‘Figure 7 showing
vthe‘device associated with a grinding wheel for
dressing a concave periphery;
‘ Figure 9 is a horizontal section taken, along
the line 9-—9 of Figure 7_;
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t ‘
vAnother object of the invention "is to provide
=-‘Figure 10, is a horizontal section taken along
an improved tool holder ?xture including a‘ base
the line III-lilof Figure 8;v
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and means supported from the base for carrying 15
Figures 11 and 12 are views similar to Figures
a tool in a number vof desired positions,‘ and in
8 and. 10, respectively, showing another arrange
which the tool carrying means is readily detach
ment of the‘ adjustable tool ?xture in association
able from the base.
‘
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Another object of the invention is to provide ' witha'grindingj-wheel-having va concave pe
an improved tool holder ?xture in which the tool
Figure 13 is an elevation ,of another ‘form of
holding member is ,rotatablyvmounted about a
grinding “wheel showing the adjustable tool ?x
predetermined: axis and is formed with a, series
ture in associationtherewith;
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of tool receiving openings of various sizes and
‘Figure ‘114,,is av horizontaljrsection' taken ‘along ~
shapes arranged in circular array with respect
the line 144-" of Figure 13_; and '_
_,
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to the axis of rotation of the member. “
Figures 15 and 16 are perspective views show
Another object of the invention is to provide
ing arrangements of the improved adjustable tool
an improved tool holder ?xtureincluding a base
?xture-forjpurposes.
of testing or gaging work.
‘having a member mounted thereon for horizontal
' ‘Referring to the- drawings ‘and especially to
rotation, a second member carried by the ?rst‘
Figures 1,‘ 2'vand 3, the ‘improved adjustable tool
member and arranged for vertical rotation‘ with
?xture
comprises'a base 2| which may be held
respect to the ?rst member, a third member car- ~
by a magnetic chuck or other suitable support,
ried by the second member and rotatable relative
'such as indicated at‘ 22, Figurev 4, whereby said
thereto, the construction and arrangement of
base is ?xed or rigidly held ‘in, a ?xed‘ position.
the parts being such that the horizontally rotat
The base 2| is‘forme'd with a vertical 'bore 23
able member is capable of 'being‘disposed in any 35
in'which is mounted a tubular bushing 24. that
desired predetermined angular relationship on
constitutes a bearing ‘fora trunnionzi depend
I the base, the second rotatable member is capable
ing from‘ the bottom of a memberZB.
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of being disposed in any desired predetermined
The’
construction
issuch
that
the
member‘
26
vertica1 angular relationship with the ?rst lrotatl
is rotatably mounted on the base 2| ‘for .hori
able member,‘ and the third memberis adapted 40
riphery;
to‘ carry'a tool and dispose the'sa'me in‘ any desired angular position.
a .
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zontal rotation, that is,‘ “about a vertical axis.
In 'orderito prevent accidental lateral shifting
movement upwardly ‘of the pinember 25 W with re
With the foregoing and other objects andiad
spect to the base;v 2|; the: dependingv portion or
vantages in View, the invention consists
the
trunnion
25 of said membenis formed with an
preferred construction and arrangement’ of the 4.5 annular groove
Z'Iiwhichregi’sters with a pair '
several parts'which will be hereinafter fully de
scribed and claimed.
In
,
the accompanying'drawlngs:
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of diametrically disposed‘ openings,28,_and 29
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.formedin the bushing 24).: >
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Formed in the base 2| is a horizontally dis‘
Figure 1 is a front elevation of an adjustable
boreor opening _3ll:which alines with the
tool ?xture embodying the ‘presentinvention, 50 posed
groove 1'21‘ and opening 28, when the parts'are
showing the same in one position; .
>
assembled in the manner _shown in Figure 2.; ~ 7
Figure 2 is arvertical transverse sectiontaken
/;;A_ ball -_3l jisnormally retained in the cavity
along the line 2—-2 of Figure 1;
provided
by the groove 21 and opening 128v by'a
Figure ,3 is a top plan view; ~_ >_
r 3
7.
Figures 4; 5 and Bare diagrammatic eleva 5.5 spring 32, mounted in the bore orsopening 730
andretamed therein- jby Va?screw threaded plug
2,406,467
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' inner end of
33 vhaving threaded engagement with a screw
threaded portion of said bore or opening. The
spring pressed ball acts as a latch, releasable by
application of su?icient force to permit disassem
4
H
to en
the set screw being arranged
bly of the member 25 and parts carried thereby
gage the trunnion 5! so as to rigidly hold the
standard or post 5%) in a predetermined ?xed
position relative to the annular member 44, for
a purpose to be hereinafter more fully described.
In order to prevent axial shifting movement of
from the base 2| when desired.
the post 50 with respect to the member 44 when .
‘
Also formed in the base‘ 21 and diametrically
disposed with respect to the bore or opening3?,
is a second threaded bore or opening "34 which’
alines with the groove 21 and the opening 29;
the set screw 54 is out of engagement with the
trunnion 5!, a ‘suitable locking'means is provided.
10 This’locki-ng means includes a ball 68 disposed
partly in a’periphe‘ral groove 69 formed in the
A set screw 35 is mounted in the bore or open
trunnion 5i, and partly in a‘ socket ‘it in the post
ing34, the inner end of said screw being arranged
59
andheldtherein by a set screw 'i-l threaded
to be disposed within the annulargroove 2'1 and.
into the socket 19, as shown in Figure 1. ’
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groove when.‘ '
to. engage the inner wall of said
I The manner in which the post or standard 5!!
15
said set screw is turned inwardly tightly,to there
is’mountedpin the annular member 44 is such
by rigidly retain thermember 2'6 'fromrotating'
:thatsaidpostis rotatable about an axis at right
with respect to the ?xedI base ‘21 ,_.'.when . the .d?i a
‘
_ '
angles’ to the axis of rotation. of the annular '
vice is set in a predetermined position. ‘
maybe ‘of; V "
member 44.
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'The main body of the member 26
The standard or post 50 has a pair of vertically,
annular form, as shown best in'Figure 3, with 20 .disposedparallel legs155 and 5B, :arrangedasuit- .
» the. outer peripheral edge of said member beveled
able distance apart souas' to receive therebetween
or disposed at an angle andrhaving formed-there,
an annular tool holding member. 51.
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on'calibrations 36.
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{The-tool holder. 51 is mounted. in they postz'or
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As shown, the calibrations 36 may designate;
standard 50 for rotation about an axis provided
each'degree of a‘ circle, and the relative position 25 by :a pivot pin 58 .carriedby the legs L55 and .56
'or angular arrangement of the vmember 261with
at right anglesrto the rotation axis ortheztrun
respect to base 21 may be readily determined by
the operator of- the device notingthe position
of the calibrations 36 with a pointer '31 ?xedly
mounted on the upper surface of the base 2 l. ‘
In» Figures 1', 2 and '3 the device is shown with
the several adjustable parts thereof set at zero
One ‘face of; the asthma 5111s lemma
calibrations 59, andthe. leg '55 .is provided-with
'307 an upwardly projecting ?nger GBiadapted; during
rotation of the .toolxholder 5'! to. indicatethe
angle at which said tooleholder‘is'positionediwith
angle positions. V'I'he manner in which theide
respectto the longitudinal center line of the post
vice is adapted to be adjusted willbehereinafter V
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more fully described.
;or standard 50., 1
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' Formed in the body of the tool holder 51, is a
‘ I
"Projecting upwardly from the member 26, ‘is a
series of‘ openings GI, 62', E3, E4, 55 and. 66. 1As
vstandard 41 having a pair of vertically disposed
parallel'legs 42? and '43; arranged in suitable spaced
shown in Figure 1 these openings are of'various
apart relation so as to receive‘ therebetween an
sizes and. con?gurations soaszto' accommodate
tools of-various types." In the present‘ instance,
annular member 44.
six tool receiving openings are'rvshowngvformed V
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‘ The annular member .44 “is mounted ‘- in1 the '
standard Al for vertical rotation about a-hori
zontal axis provided‘ by a pivot pin 45 carried
by the legs 42 and 43“
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in the tool-holder 51... These openings are‘ ar-.
ranged. with centers spaced equidistances' ‘apart, '
‘ or. as: shown, the v‘centers-of the? openings are]
spaced 60 degrees. apart. inrelaticnship to;~ the
~
One face of the member “is formed'iwith. =
location of the calibration 59. .,
calibrations 46; and the leg 42 isiprovided. with
an upwardly projecting ?nger.‘ 41 ‘adapted’, dur
ingrotation of the member 44, to indicate the
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'So, that‘the tool. holder 51- can be retained inla .
predetermined ?xed position with respect'to the
post orstandardéi?, the leg 56 carriesaset screw ,
angle at which said _mernber is positioned‘ ‘with
'50 61 which is so arranged that the innerfend-of the
respect to the vertical standard. ~ '
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setscrewcanr impinge againstaifa'ce of the tool
Formed in the annular member 44 [and extend
.holderiwhen the set screw is turned in-Jtightly, to
in'g- inwardly from thepouter periphery thereof
thereby prevent rotation of the tool‘ holder with
is a slot or opening 43,
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respect to the post or standard 50. ,
, . The-slot or‘opening 4a‘ is'radially disposed "with
respect to the center of rotation of the ~~member
2.
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retain a tool in ?xed position in the tool holder
7, in well known'manner.
.Since the member. 26 is‘ rotatably mounted on
V
' 60
44, is an annular block 49. having a flat outer :or
top face that constitutes a’ seat-lfor vthe bottom
of a second standard‘ or post 50‘. '
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The post 50 is formed‘with a depending‘ por- ~
tion or trunnion 5i _ that passes through an open
ing 52 in the block 49 and is. disposed withinthe
.
openingorslot 48;
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"
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' *IL'inclusive, respectively, which are adapted to
' indicating Zero angle degrees,-as s'hown' in'Fig—
Surrounding the mouth of the opening 48 and
mounted on the outer periphery. of the member
1
inclusive, are‘radially disposed: setrscrews 112 (to
v44, the longitudinal center :line of'said opening
coinciding with the point ofthe calibrations 46
ure
‘ "
Associated. with each of the openings 611 to~E6
the'base 21 for horizontal rotatiorn?an'd 'sincethe
annular member v'44 is mounted ‘on the: member
26: for verticall-rotatiomthe tool holdingmember
51. isarranged to be .disposedlin any :number-of
predetermined .positions, due ‘to the .-manner *in
which said member} Elis rotatably suppo'rted,‘as
has been heretofore; described, and; due’. to._1the
provision of means‘ in the member '51 . for receiving
‘
tools of'various types and sizespthe device. of the
At a suitable point adjacentto the'o'penin‘gior
present; invention ‘is capable- ofébeing used "in ‘the
v1slot'48', the member ‘44 is formed with a threaded 70
accurate production» 'o‘fi'cutti‘ng’j tools,‘ and it
‘bore “53 that extends from the periphery of said
member inwardly at an angle and'intersects the
opening or s'lot48~ atTa point adjacent to the-inner
endthe'reof.
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4 A set screw 54'is mounted 'i-n‘the bore ’53,>¢the
makes it 'possibl'ef'to regr-ind orfsharpento‘ols r'of
various types and to retain the respeenvegcon
tours of the tools so'reground'. By means of the
‘calibrations or graduated scales which indicate
2,406,467
I
the angles of the» various settings'vofthel'device,
it is possible to record data for any form of cut—
ting tool and to duplicate the tool. ~
a work-piece 89."
7
It will be noted that adjustment may beef
»fected about four different axes as ,follows: ?rst,
the axis of the trunnion 25»; second, the axis 'of
the pivot pin‘ 45 which? is perpendicular tosand
' 6
42 to' scribe} an arc," vin-ahori'z'ontal surfaceof
a
i)
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Figure‘ 16 shows the device used as a support
instead of a toolrpost for an indicatorgage 90
employedto test whether a piece of work is
properlytcentered with respect to a rotary chuck
9|; Any wabbling of the feeler will show magni
intersects the axis of the trunnion‘ 25; third,ithe
?ed on the indicator arc. The usual tool post
axis of'the vtrunnion 5| which is perpendicular
does-not have the great‘facility of adjustmentto
to and intersects the axis‘ of the-1 pivot pin 45, 10 bring thefeeler into gaging position as does this
and, fourth,’the axisof the pivot pin 58 which
device.
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is perpendicular to and intersects the axis of. the
It willbe noted that due to the, manner in
trunnion 5|; and ‘the axes of the standards lie
which. the standard .42 is detachably connected
in the central plane‘ of thetool holder; Be‘
Y with the base 2|, the portion of the ?xture, in
cause of this relationship‘ between the various 15 cluding the several parts‘carried bysaid stand
axes, angular adjustmentaboutany >01", them at
ard, can be readily assembled .and disassembled
equal distancesronleither s'ideaof thezero indica
' with'respect to the base 2|. xWhen .the parts are
tion will cause equal and opposite tool adjust
thus disassembled‘ the partscan be easily packed
ment. It is also't'o be noted that the post 50 may
‘ in a machinist’stoolbox or. the like without ‘dim,
be swung through the vertical and through sub 20 culty, :so that the device is. easily portable. .,
stantially 120° on either side of the vertical. This
From the foregoing description of certain em
makes possible adjustment to any of the discussed
bodiments of this invention, it should be evident
positions shown in Figures 4 to 16, inclusive, as
to those skilled in the art that various changes
well as to many more not illustrated, and which
may be found convenient for special purposes.
As shown in Figures 4, 5 and 6, when it is de
sired to grind or resharpen a tool, such as a
‘ and‘ modi?cations might be made without de
parting from the spirit or scope of this invention
as de?ned by the appended claims.
I claim:
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threading tool 80, the base 2| is mounted on the
supporting element 22 of a grinding machine 8|
1. In a tool holding ?xture, in combination, a
base, a member rotatably mounted on said base
having a suitable grinding wheel 82. v The tool 30 for horizontal rotation, a standard carried on
holding member 51, with the tool 80 mounted in
said horizontally rotatable member extending at
one of the openings 6| to 66 therein, is disposed
substantially a right angle to said base, an an
in the desired angular relationship with respect
.nular member rotatably mounted in said stand
to the standard 4|, by-shifting the positions of
the members 26, 44 and 51 from the zero angle
position shown in Figures 1, 2 and 3, to the
angular arrangement shown in Figures 4, 5 and
6. The surface portion of the tool '80 to be re
ground or dressed is thus held in the desired posi
tion so that when the tool 80 is moved into con
tact with the grinding surface of wheel 82 the
desired operation will be accurately performed
thereon. In Figure 4 there is shown the relative
position of the parts when the ‘?xture is ar
ranged to sharpen or regrind one side face of a
threading tool. The manner in which the other
side face of the threading tool is ground is shown
in Figure 5, the tool holding member 51, being
ard for vertical rotation with respect to the hori
zontally rotatable member, a second standard
carried by said annular rotatable member and
when vertically extended rotatably mounted for
horizontal rotation with respect to said annular
member, said second standard extending radially
from the. periphery of the annular member and
having its axis of rotation alwaysin the same
plane as the axis of rotation of the ?rst standard,
and a tool holding member mounted for vertical
rotation on saidv second standard when said sec
ond standard is vertically extended and having
its axis of rotation intersecting the axis of rota
tion of the second standard.
2. Ina tool holding ?xture, in combination,a
turned about its axis 58,‘ and the manner in which
base, a member rotatably mounted on said base _
the tool point is dressed to the desired front rake 50 for horizontal rotation, a standard carried on
is shown in Figure 6, the member 44 being turned
said horizontally rotatable member extending at
about its axis 45.
substantially a right angle to said base, an annu
Figures 7‘to 14, inclusive, show-various posi
lar‘member rotatably mounted in said standard
tions wherein the device is adapted for use for
for vertical rotation with respect to the horizon
dressing grinding wheels.
tally rotatable member, a second standard carried
Thus in Figures 7 and 9, by rocking the truing
by said annular rotatable member and when ver
tool 83 clamped in the hole 66 of the disk ‘51
tically extended rotatably mounted _for horizontal
about the axis of the standard 42 which lies in
rotation with respect to said‘ annular member,
wardly of the wheel v‘edge the edge of the grind
said second standard extending radially from the
ing wheel is trued convex, while the same action
periphery of the annular member and having its
with the parts arranged as shown in Figure 8 with
axis of rotation always in the same plane as the
the axis of the standard 42 outwardly of the
axis of rotation of the ?rst standard, and a tool
wheel edge, the wheel will be trued concave.
holding member mounted for vertical rotation
Figures 11 and 12 show a still different ar
on said second standard when said second stand
rangement wherein rocking motion about its 65 ard is vertically extended andhaving its axis of
axis of the standard 50 will true the grinding
rotation intersecting the axis of rotation of the
wheel concave, this axis being below the wheel
second standard, said ?rst mentioned standard
edge.
Figures 13 and 14 show an arrangement where
in by rocking the truing tool about the pivot 45
a bevel face 84 will be formed on the grinding
wheel.
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being centrally disposed with respect to said horié
zontally rotatable member.
3. In a tool holding ?xture, in combination, a
base, a member rotatably mounted on said base
for horizontal rotation, a standard carried on
Figure 15 shows the device used in place of a
said horizontally rotatable member extending at
surface gage. It employs a scribing point 86
substantially a right angle to said base,an annu- .,
which may be swung about the axis of the part 75 lar member'rotatably mounted in said standard ~
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for vertical rotation with‘respect to’ the horizon- ' _
tally rotatable member, a'second ‘standard :car
ried ‘by said annular rotatable memberjand ‘when
vertically extended rotatablymounted for .ihori-l
zontal rotation with ‘respect i-to“ said} annular
tally-rotatable member, a second standard car-7
ried by said annular rotatable member and when
vertically extended vlrotatably' mounted for hori
member, said second standard exten'dinggradially
zontal rotation with, respect to said annular mem
ber, said second standard'extending radially from
‘the, periphery of the annular member and-having
from the periphery of .the annularrmember and
having its’ axis of rotationi'always in *‘the: same '
vplane as the axis of rotation of the ?rst’ standard,
its axisof rotation always in the same plane as
and a tool holding member mounted for vertical
the ‘axis' of rotation of the ?rst'sta'ndard, ‘and- a
rotation on said second standard and having‘its
, axis'of rotation intersecting the‘ axis ,ofvr'otation
tool holding member mounted.- for'vertical ,rota-_
tion on‘ said second standard when said'seconcl ‘
‘of the second standard‘, said tool holding? member
being mounted for vertical rotation on said second
standard axially thereof when said'seco'ndfst'and
aid is vertically extended;
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substantially-a right angleito said base, arr-annu
lar member rotatably; mounted in said‘standard
for Vertical rotation with respect to the horizon
standard is vertically extended and having its
axis of rotation intersecting the axis of‘ rotation
of the second standard, said second standard with
.said tool holdingimemberbeing movable through
_
4.¢In a :tool holding- ?xture,‘ in combination, a
base, a member rotatabl-y mounte'don'isaid base
360 degrees.
for horizontal rotation, saiis'tandard carried: on'
said horizontallyirotatable member vvextendingTIat
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EDWARD-MVLOONEY,
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