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Патент USA US2404439

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‘July 23, 1946.
a. B, HIRSCH ‘ '
Filed July a1, 1945
- 3O
4 Sheets-Sheet 1
July‘ 23, 1946.
Filed July 51, 1943
4 Sheets-Sheet 2
Jilly 23, 1946-
Filed July 51, 1943 >
' 4 Sheets-Sheet 3
'July 23, 1946.
Filed July 51, 1945
4 Sheets-Sheet 4
_T.4 BLE Mo'rag
fay‘ 4
Patented July 23, 1946
. 2,404,439,.
" l
a r‘
George B.-Hirsch,_Providence, R.;'I.‘,1lassign0rt0[ '
Brown (‘and ZESh'arpe Manufacturing“ Company;
acorporation of-Rhode Island‘
Appliceiipn Jew 1.31.’ .1943, ‘seriakNo-aeessx,
- ‘
15 Claims. ‘
The present inventionfrelates to driving and 1
consists in the provision of a c01_1trolv mechanism »
control mechanisms.
for a" feed-quickf traverse iclutch "comprisingif
The' invention i'sherein disclosed inja preferred_ mechanically _ ‘operated fs'hift’l devices which’? are"?
well ‘memento be operated b‘y-“m'eans or solenoids-f‘
general typehaving a rotary milling cutterlspiniilen 5 forrningipart‘of the electrical control system‘ of"?
form as embodied“ in a' milling‘ machine _'of' the
and a work supporting assembly‘inc‘lucling a longiQ
tudinally'reciprocable" table‘ and a transversely '
movablesagldle ‘support; ‘The driving‘ ’ conneclf
' thernachine- In the illustrated lform'lo'fjthe? mg"
ventiom-"thelclutclh shiftingv mechanism- co'r'n'pri'sesi _
a ‘series'of shift earn surfaces'ioi‘med-"on th'ezbpi;
pcsit'e; ‘faces of a’ Iargeunv-m'; gear continuously?‘
?rms f0'r"the,_W01t1$ suprnrting'a‘swmbly, cqmpriise '
an ‘electric, motor, feed "and‘ quickivtraverse gear
driven from the support driving motor“ anagram"
trainsncontinuously ‘driven ‘therefrom, a feed}
"shiftableand rommbie'eiuicn shifting '
quick traversej'clutch,shiftable between an"inter_-"
mediate‘ neutral position yv'ancl alternative)‘. feed
at one end’thereo'f'a pair of vGluten lshift'in‘gl ?ngers-1f
arranged'to be‘ brought into different-‘operative;
positions with relation to the Shifting*c‘air'n‘si-by"iv
rocking movements "imparted; {to ‘the ‘rod "to "shift-f
and‘ “quick traverse] positions,‘ ‘and, "branch; line 1
transmissions ‘therefrom v‘forjdriving each 'of the“
several supports.’v 'A'n ;in'dividua1j electricrmotor“
having appropriate driving connectionsjthere
from is pro'vided'for driving the milling cutter
“the rod and’ ciiitehaxialljfrtm Line to another
For controlling the‘ operatipnyof '_ the 1
machine, ‘an electrical control system'is jprqvided"
which operatesnthrough' the agency of "switch I
said: positiens’, and. electricallyoperatedime‘
including" solenoids ‘for’ controlling» the angular
position ‘of; we “shift ro'd:
Y 7
v'ther feature'pf the in- '
_I . In ‘accordance
vention, ‘a ‘mechanism. isipr'ovided for" positively- - ,
connections‘tbfstart 'and‘stop the spindle and‘
work ‘support assembly ‘motors; The feed-quieli*_
controlling the angular movement ‘eith'e shiftrdd
traverse ‘ clutch is constructed’_ and arrangedfto ‘
to avoid possible iriterfierencefof-“th
when the él‘ec'ié 5
triical "cqlii'réls. ‘areipperaied'ih slim fa» new
be" operated "by means _‘of the electrical "control '25
in connection
driving motors
with‘ thestarting
‘for the tool‘ andjstop-f
angilwork~ ’
“certain conditions as,‘fo3r‘
to "cell. for a shifting nibver?eeti 9?? the Yew-@1111“
It is‘a ‘principal objector the invention to pro
vide ja‘jnovel andv improved "mechanism "for “con-'9
clut'ch‘in 'ajmachine
* of thegeneralv
iis‘ascription.v ‘
More speci?cally," it is any object of the invention
to provide a'novel andf'i'm‘proved power operated“
shifting mechanism for thelclutch?which ‘is “con:- ‘
trayerseicluwii fmmmfatqt'he .oths?clutc“ ’
Surface onthei'shifi rqdiwhich'ieaifreegediiq ei
brought valiern‘ail-rely ’ Over‘ ‘one. 0?. Title Other”?
structed‘ and arranged. to ‘be ‘readily controlled ‘by
one to. ‘another,
means for
' the ‘ clutch
clutching and intermediate neutral l_'po's_itions_.'i_""
’ It i'sa'furth'er'vobje'cti'of‘the invention‘itolpro
vide‘ a‘: power operated, electrically f ‘controlled;
shifting mechanism of the general type describedf
for a feed-quick traverse clutch'which is par-mu:
, larly adapted for use ‘in a milling‘ maempe having 45 the i'intermediate neutral‘ p10
electrically operated and controlledfp'owe'r driving .
pull “exertedPloyv the "electricalv
means for the Work?supportingfassembly and.
niil'li'n'g"cutter.spindle-tojcause‘ the clutch’ to be‘
shifted a;lltorhatically,kfr'onrrv either. the. ‘feed orv
quick; traverse running; position‘ to neutral r. to
bringfthe workj support to aquickjstop whenever
the‘fn'vower is shut 'o?hinforderjt‘o preventvpossible '
coasting; oi; the work‘ support ‘with, the milling‘
cutt‘eit'ot theimaqhin‘ej stationary. ' “
With. these and other objectszin view? as may
hereinafiiétappearl aifeatvrie dime; _. g ._
operative‘~ tof‘continue the ‘rocking: intvem'e'n'
the shifft 'lrod‘i to ‘ ‘the alternate ‘ extreme‘
so"v that
actuating ; cams ' 0'"
nue theaxial shifting movemientsi‘ot the ‘ski tf
dance withvfano her feature of’ ‘the in?
. V
60, and a control collar 68 slidable on the sleeve
and feed and quick traverse positions, and also
serves automatically to engage the brakewhen
the clutch is shifted to the neutral position.
member 66 in either direction from the neutral I
position shown in Fig. 2, to limiting positions in
each direction in which the feed and quick trav
‘ The several features of the invention consist
alsqrin the devices, combinations and arrange
ment of parts hereinafter described and claimed,
which together '.vf_ith theadvantages to be rob-u
erse driving clutch elements are operatively con
' nected. The shaft 60 through which the drive
I is‘ takenifrom the clutch hasfrigidly secured
‘ thereto a gear ‘III which meshes with a gear ‘I2 on
tained thereby will bereadily understood by ‘one '
S killed in the art from the following description
shaft 52 which in turn meshes with a gear 14
‘secured on a rearwardly extending splined drive
. shaft ‘I6 through which the drive is transferred
taken in connection'with the accompanying‘
drawings, in which Fig. 1 is ‘a somewhat frag
to the saddle support 32 of the machine. The
mentary view in front elevation showing a por- i
. drive is taken from shaft ‘I6 through a bevel gear
tion of the work supporting assembly ‘of ‘a mill-i
ing machine, a portion of the casing being broken
I ‘I8 .slidably supported on the spline shaft ‘I6, and
~ arbevel gear 80 on’ a horizontal shaft 82 in the
away to illustrate particularly the driving con
nections for the tablerand saddle supports; Fig.2 - ~
is an enlarged detail view partly in section illus"-‘
}saddle support 32. A gear 84 on the shaft 82
‘ meshes with a driving element 86 of a table re
trating particularly the feed-quick traverse
versing‘clutch carried on a short supporting shaft
quick traverse clutch. shifting, mechanism and
the mechanical brake’ associated with the feed-‘
quick traverse,clutch;'Fig. 4 is__ an enlarged de
tail View illustrating particularly the clutch ‘shift,
prisesra clutch member 94 supported for axial
88. A gear 90 on the shaft 82 is connected
clutch and the shifting mechanism therefor; Fig.
3 is a 'viewlooking from the left of Fig. 2, but .20. through an intermediate idler gear (not shown)
with'a~ reverse driving element 92 on the shaft‘
onasmaller scale, illustrating particularly the
88. The driven’ element of the reverser com-'
solenoid for controlling the operation of the feed
movement on the shaft 88 from the intermediate
25 ‘ neutral position shown in Fig. l,v into engage‘
-ment alternatively with clutch faces formed on
ing cams and ?ngersshcwn in 'Fig. 2, but with k the driving elements 86, 92 of the reverser; The
the‘. parts in the quicktraverseposition; Fig. 5'is‘ gear 96' formed on the driven clutch member 94
. meshes with a clutch gear'SSV which‘ is carried
a View of the partsshown in Fig. 4, looking from
the right; Fig. 6_;is a somewhat fragmentary view
of the clutch shifting?ngers and cams looking
by a‘ shaft I60 which also carries clutch ‘gear
301 for
power driving the table. , .The gear
meshes with a'ge'ar I04 formed on the driving
in the ‘direction of Fig. 4, but with the parts 7
nut I06 of a feed screw and nut drivingconne'c- '
in the feed position; Fig. 7 is a View of the parts
tion for the table. 7 In the _ illustrated form'of _
shown in Fig. 6, looking from the right; Fig. ,8
invention, the feed screw I08 is of the'non
is an enlarged detai1 view partly in‘section taken
rotating type, being rigidly secured to the work '
on, the line 8-8 ofv Fig. 1, illustrating the clutch
1 table, and the nut I06 is externally supported on,‘
‘shifting ?ngersgandd cams in the ‘neutral posi
the saddle support against 7 movement axially
tion; and Fig. 9 is a wiring diagram of the ma
' chine illustrating the manner in which the clutch
shifting solenoid isT controlled to shift the feed
‘ I [with the table.
quick traverse clutch with relation tothe several
operating controls of the machine. ‘
mechanism for shifting the feed-quick traverse
clutch which is particularly adapted and .ar
bly of a milling machine comprising a longitudi
, the provision of a novel power actuated shifting.
‘ Referring speci?cally to the drawings, Fig. 1
discloses a portion of the work supporting assem
A feature of the present‘
invention'consists in
ranged to be controlled through the agencyof
45 electrical devices including solenoids. The shift
nally movable work table 30, a transversely mov
able saddle support, 32 and a base 34 within which
is formed agear box 3,6 containing the variable
speed driving connections for the work support? 3
ing assembly of the machine. In the illustrated 50
machine, the drive for thesaddle support 32 and
‘table VIII) is taken from an electric motor 38 havév'
ing an armature shaft .40‘ and a pinion 42 mount
ed thereon for engagement with alarge driving '
ing mechanism for the clutch comprises va shift- '
, ing fork II2 which engages in an annular groove '
H4 formed in the sliding collar 68 above "de
scribed, and is carried on an axially shiftable
control rod, I Iii. ‘The shiftingfork I‘IZ is'sup-‘j,
ported on the control rod between a shoulder I.IB_ :
and a collar I20 for movement axially as a unit .
therewith. The control rod'is supported ‘adja
cent one end in a bearing I22 formed in the ma- ‘
gear 44 supported on a shaft 46. The variable 55 chine frame, and at its other end within a sleeve
element I24 which is externally supported for ‘ro
‘speed feed drive for the movable supports is
tational movement in a bearing I26'formed in‘
‘taken from the shaft 46 through a system of
I V a ?xed portion of the machine. The control rod
a change speed gearing indicated generally in dot
I I6 is keyed to be rotated as a unit with the sleeve
ted lines in Fig. 1, carried on a series of support
ing shafts 48, 59‘ and 52, terminating in‘ge'ar's .60 member I24, and to move axially'with relation
thereto,-by means of a key I28 in the control rod
‘54, 56, (see Fig. 2), which form an integral part
which engages with a corresponding keyway in
1of the feed driving element 58 of a feed-quick’
itraverseg clutch supported on a' shaft 60. The I the sleeve element I24.
quick traverse drive for the movable‘ supports is
In accordance with the invention, the control
‘taken from the gear 44 through a pinion'62 loose
rod H6 is provided at one end with‘ a pair of '
,generallyeas including the feed and quick trav
Ierse driving elements-58 and 64 40f the clutchja
to position one or the other finger in position
to cause the cams engaging‘therewith to posi-"
element secured to turn with the supporting shaft
thealternative neutraLfeed and quick traverse”
clutch shifting ?ngerswhich are arranged to‘ be
ly supported to turn on the supporting shaft 60,
acted upon by'means'of shift cams formed on
‘yandqforxning an integral part of the quick trav-'
the two faces of the main driving gear 44." The '
erse driving element 64 of the feed-quick traverse
‘clutch. The feed-quick traverse driving‘ clutch? a"; operation of the ?ngers and ' cams associated
of the present machine is of a standard construc 70 therewith is controlled by imparting [rocking
,movements to the ‘control rod IIB which serve
tion available in the market, and is illustrated
‘ sleeve member 66 which is identi?ed as the driven ' ‘:'tively shift theclutch from one to another of
driving positionsrz. - 'I‘heirotationali movements 1013“ f‘
thatcontr'ol .rod ‘I I6 laree'ini'turnl: controlled by"?
to -.move the shifting ?nger .II 34~:to_-,a..>fu1lyraised _
inoperative position, and at,.'jthe;;sameptime;top
means‘ of solenoids: and a? centering ' spring. sysa
temxwhicniacts onlth‘e rotatable sleever I24 pre-s .
stepped surface IE6 is broughtyinto the path of
move the?nger I 36 downwardlysothat theinner, 1‘
viou'sly described. 1 -At .its:right'-ha-nd1end,; as 5 4 movement. of the cooperating cams \I48,:thus; cans-r ‘
shown in~Fig.;2,:the rod I IShas supported theree.
ing the clutch to‘ be moved to the-feedaposition.
A return rocking, movementof-the control rod’
two' clutch. ushiftingi?ngers .I34 _and1,~.l36; . The
H6 to its intermediate position ‘will causeothe
?nger I34is' ‘rigidly supportedfin ja -receiving1:slot .
lower .orputer stepped surface I58 of the shift-L.
I38‘‘means oftscrews I40; and i's_~;particularlyv ~,1o;!ing.?nger. I34 to be broughtinto the-path of;
on a bracket“ I32; which. provides avs‘upportfor ‘
adapted Ltd cooperate >with=any~one of , a ;ser'ies:of
movement of. it'sycooperating cams I42 to return ~
cam-y elements l42i'formeduoln the rightzyhandor.
theyclutch tov the intermediate neutral position.._
outeriface ofrthe gear 44 as "viewed invFig. .2;- '
Further in accordance with the present ‘inven-W ‘
tion,.thegangular position of the control. rod- Hi6.
I44"for'med"on the left handor inner. face of the: 15,.to~~determine the setting of the feed-quickltrave
The ?nger . I136 is ‘similarly;supportedi'inga' groove .
bracket 1.32,:- andf'is . held ‘in. ‘position thereon'Iby
erse sclutchf is arranged :to be controlled; entirely}.
by means of electrically operated means.‘ As best.
is :-particularly" arranged :to : cooperate -with any.
shown .in Figs..2;,and 3 of .the drawingspthd
one'iof'a ‘number of cams I 48 Lformedon the in-v I ' sleevezmember I24‘ to which the ‘controlrod _I I6
ner; face of :the-gear.44.» Thez?ngers I34;.I36 2011115 keyed, is provided on its rear face with an.
in addition to being-mounted at opposite faces of '
_ eccentric‘ pin€I6? to which is connected; the ar
the bracket I32 are “also mounted on the opposite
mature. shaft i [6210f a double actingsolenoid
sides of the’axisof. rotationvofi the control rod
£64; The solenoid isprovided with two coils I66. .
||6,'.S0- that rotationaljmovement of the control
and I68 which are arranged to be alternatively
rod. from the “intermediate neutral1~position of 25,;energized to‘cause-‘the armature shaft IEZ-to be
Figs;2aandv8?will cause onev or the other shiftl
shifted either. upwardly or downwardly as de
ing. ?nger tokbeemoved>downwardlynto a. dif
sired from the- intermediate position illustrated
ferent operative position with-relation to itscam, ‘
in Figs.‘2 and3,‘ to correspondingly rock the con,
while the’oth'erof said ?ngers is moved. upward
trol rod H6. The solenoid is secured to a'plate
1y. to awwholly; disengaged inoperative position. I1u_.pivota1ly. supported atits lower end
Asbest shown. in
8‘ of the drawings, each of >
on apivot pin.I12,l soqthat-the upper end?of the.
the?ngers" I34; I36'is. provided with two; out-_
solenoid andthetalrmature I‘62-are permitted .to.
wardly stepped cam engagingsurfaces'the‘ -?n-.
follow thecancuat'eymovement of the-connecting
ger I34 being'provided with an'outwardly disposed 1
pint. I160; The, sleeve member I24 is, provided’,
cam engagingsurface. I53 and‘ an inwardly 35I=also ‘with a laterally; extending arm to which"
stepped camengaging surface I52, and the ?n
isconnected the upper‘end of a centeringspring‘
ger- I 36v being similarly provided with an out-.
wardly disposed cam engaging surface I54 and
supportingrod‘l?iv which is slidably supported
an additional. inwardly stepped camengaging
'surfaceIES. . Thesecam engaging surfaces of the
shifting’ ?ngers are .so constructed - and arranged
that for an intermediate or neutral angular posi
tion of the control rod IIB as shown in Figs. 2
and 8, the outwardly stepped cam surfaces I53
and I54 respectively of the?ngers I34, I36 are
inoperative relation to their respective cams I42
and I48. For, this position of the parts,it will
readily be seenthatthe‘control rod; I I6 is posi
tively hel'dinthe intermediate neutral position
intermediate its length within a collar. I18 sup‘
ported on a laterally extending pivot pin I80 on
40 the machine frame.’ Centering springs I82 and»
I84 coiledgabout the rod I16 and engaging be
tween opposite sides of the collar I18 and .cooper
ating abutments on the rod I16, tend at all times.
to return the control rod ‘I I6 to itsintermediate
45 inoperative position.
Under certain conditions of operation, it is.l’re-.
quently desirable to shift the feed-quick traversev
clutch directly from one to. the other clutching
"position. Assumingthat the. solenoid I68 is en-.
illustrated in Fig. 2.’ Assuming that thecontrol 60 “ergized and the. shifting ?nger depressed '
rod' [I6 ‘is now ‘rocked in "a clockwise direction
to the position" shown in,
5; the inner orjleft'
hand vshifting ?nger I36'1is'movedupwardly'to
so that the control rod II 3 isin the quick traverse
position asshown in-Figs. 4 and 5, it may, for ex.-v
ample, be desired to. tie-energize the solenoid I63
and to energize the solenoid’ I66 to shift the
side the p'eriphery of the driving gear 44, while 55' clutch to the feed position. Withthe parts in
at the same time the ?nger I34 is moved down
the position of. Figs. 4 and, 5, and as; shown in
wardly so'that the inwardly‘stepped cam engag
dotted lines in Fig. 8,. an immediate rockingl of
ing surface I52 is brought into the‘ path of move
the control rod I I6 to the alternate feed position
ment of'the cams I42, causing the ?nger I34 and
would have the effect of moving the feed shifting
a fully 'inoperative'position’ in“ which it is out
the‘b'racket I32"'o'n_ which ‘it is/mounted and the v60 ‘?nger. I36 downwardly into interfering engage-E‘v
control ‘rod: I I6 t‘o'be ‘shifted‘bodily to the’ right,
ment with the main driving gear 44 Withconser;
as shown in ‘Fig-i 4; to shift the feed-quick‘trav
quent breakage of the parts. In order to. avoid
erse clutcheto the quick traverse’ position; This
this contingency, a safety vdevice is provided
is also‘thep'osition shown-in dottedlines in Fig.
which .acts positively to prevent rockingw_moVe--v
8. When the control rod H6 is a'gainrocked 65 ment' of the control rod H6‘; andvshifting, ?ngers
to its-‘intermediate or neutral‘position, the'inner
I34, I36 beyond the intermediate position until
' stepped surface I52-is "shifted out of'the path-of"
after the control rod II 6 and’ associated, parts.
movement of the cams" I42, and the 1ower»or~
have been shifted axially to the intermediate
outer stepped surface I54 of the ?nger I36 @is‘
neutral position, whereupon the solenoid I 66 con
moved. into'the- pathof its cooperating cam. ‘I484; 70 tinuously acting on the armature. I62. is per
to. causethe?nger assembly,“ control rod H6 and.
mitted to continue the rocking movement of the.
clutch shifting fork'il I2 to be shifted to .theinter
control rod II6 to the alternate feed position to
mediate neutral position. . Av . rocking‘ movement
engage the. clutch inthe feed position as- shown
of. ,thecontrol rod IIB‘in .a counterclockwise di.-'
in...Figs'...6. and 7.. The, m.echanis_m-;_forpositiyely;
I‘BGtiOlliId the. position shown in Fig..,.7,;serves; 751 controlling; the rockingmovementzofg.12118219511115?
'7 .
derstood from an inspection'of Fig.9 of the draw-ii
ings', in'which is villustrated‘ the electricalxdiaw
comprises the collar I20 rigidly secured to the‘
control rod I I6 which is squared off to provide-on _ ‘
gram: of aisystem'suitable for a milling. machine »
having a table driving motor 38, a pump motor;v _7
its underside an engaging surface I86 for'engagee j
ment'with' two-pins I88 and ‘ I90 formedv on a.
and a‘spindle ‘motor for driving the millingcut; ,
ter spindle ofv'themachinel The feediand. quick .
lateralv extension I92 of a machine-‘supporting
frame. The'pin-s I89, I90 are spaced atopposite:
sides of the control rod H6, and are ‘disposed also “
axially with relation to one another ‘along the
traverse solenoids I66,-.I68 are indicated at the
bottom of Fig. 9, and are shown in a circuitwhich
includes the contaétlTIB-B. This contact is-in
' control rod II8.‘- For the intermediate -ori~.neu- .
‘ tral position of the control rod H6, the'block‘ 10 turhlcontrolled by means of a relay 'T; In the V
7 I20 is disposed between the pins I88, l?iandicani. eventthat the table‘ is'to be operated atv the feed.
rate,ithe ‘closing of 'a' starting switch contacting-6, .
have‘ no’ effect on therocking movement>off..the'~.
and ‘either. the right ‘or left directionalirelay'
switch contact B—8, willcausethe relay T to :be
The disposition of the pins I88, I 98 is;
such as togperrnit movement of thejcontrol rod in 2
‘ energized'to close contact TI 9—5 so that solenoid '
its jrockedposition axially to the- quick» traverse
I66 marked “Feed” will be ‘energized, causing the
‘feed-quick traverse“ clutch; to be‘shifted to the»
position as shown in Figs. 4 and 5. Ifthe-electri~ ‘ ~'
calgoperating ‘connections of the ‘machine are‘
now shifted to the alternate feed position, the‘ pinv
I90 will, act in engagement with the surface, Ito.
of’ the collar I26 as indicated inv Fig. 4, to prevent
_ feed position,~ asiabove set'forth; It'willibe noted,
that each ‘of the feed-quick .traversexswitches'
20 having feed contacts 4—I6, I6,—I‘I and I‘I—I8, '
respectively, is normally biased tothe feed posi-'
anyrocking movement of the control rod I251
tion illustrated in Fig. .9‘ by spring means act- ,
beyond the intermediate neutral position. As. the.
ingv on. the respective switchesv so thatrthe en
ergizing of the relay T only is required to shift
control rod I I6 is'now returned to its intermediate
position as above described, the‘ surface I89 of
thecollar I20 rides out
of engagement ‘with. the: 25 theyieed-rquick traverse clutch to ‘the'feed posi—"
tion; In the event that movement of .the sup;
port- is to be continued at the quick traverse rate,‘
theipressing' of anyone of the quick traverse
switches. designated QT and shown in’ the lower.
pinj I90’,‘thus permitting the controlrod II6 to
be rocked to the alternate feed vpositiomand to >
be shifted axially thereto, as indicated in Figs;
6 and'l.
‘With the present construction, a braking and: 30 portion . of diagrammatic» Fig.‘ 9; will cause‘ the ,.
designated switch contact II-—-I6, I6-I'I or I‘I-'I8‘
detent mechanism is provided which serves to
to be’ opened, ‘thus, de-energizing the feed clutch
maintain: the clutch ,control‘rod yieldably in each,
solenoid I6‘6‘,‘and ‘will .caus‘el'the corresponding‘
of its neutral and quick traverse positions and is‘
one'of the switch contacts 4-—2I; to beiclosed, en
rendered‘operative upon the shifting of the feed-f
‘ ,
quick traverse clutch to its neutral position to 35 ergizingthe quick traverse clutch solenoid I68;
In the event that the machine is to‘be joggedvv
mechanically brake the driven sha?t 60 and the.
at quick traverse with the spindlemotor stopped, '
parts driven therefrom.
the pressing ‘of one of the QT switches above
noted will act in a similar manner to establish a
ported on a sleeve member which also carriesra 40 circuitvthrough the quick traverse solenoid I68. '
In this case, a circuit is established through con‘
disk‘ I96,.,these parts being keyed to ‘turn with
nection 8 to energize the relay T and to close the '
and to be axially movable upon the driven shaft
mechanism, as best shown in Figs. 2 and 3, com-;
member V I94 .sup-v
prises a cone-shaped braking
switch contact TI9—5.
80. -A compression spring I98 coiled about the:
shaft to between the brake ‘disk I96 and a collar 45 Assuming’ that the machine is ‘operating at
*quick traverse but with switch L or R closed and
2110v tends normally to move the brake into its en
the spindle :motor running, when the quick trav
gaging position. A shiiting fork 202 pivotally sus
erse switch QT is now released and permitted '
pended from a pivot pin 204 engages with a face
to return to its normal raisedposition shown in‘
of. the disk I96, and is in turn acted upon
control lever 206 supported to turn on a pivot 50 ,Fig. 9under the pressure of its actutaing spring,
208, and provided with an upward extension and‘
"the circuit through, the quick traverse solenoid 7
an adjustable stop screw 2I0 for engagement
therewith. The control lever 265 is provided at
its outer end with a V-shaped projection 2E2 j for
engagement with any one of three V-shaped
I68 isf'opened and the circuit through the feed‘
solenoid I66 is closed to again shift the quick feed
traverse clutch through the neutral position to
pinned to the sleeve hub of the‘ clutch shifting
thelfee‘d position. If,'on1the other hand, the
‘work support is being moved into position ‘at,
quick traverse, as above ‘suggested, 'with the
fork II2 axially as a unit therewith. In the in“
spindle motor not running, so that the switch 7
notches formed in a sleeve member 2M which. is
termediate or neutral position of the clutch, the
contacts R6—8 .and L8—-8 are both open, the‘
control rod I16 andv associated parts, the V
‘release of the quicktra-verse switch will ‘have the >
shaped member 2 I 2 is engaged within a relatively 60 'elf’ect
also of de-energizing solenoid T, thus open
large V-s'haped groove 2H5 in the sleeve 2M, per? '
mitting the control lever 266 to be rocked down- 1 ,
wardly sufficiently so that‘the brake I94 is en-‘
gaged under the in?uence of its spring: 1556.
Movement of the control rod I I6 in either direc-j
tion to the clutching position, causes the fol
lo'wer 2I2 to ride onto a high portion of the pe
riphery of the sleeve 2I4 where it is engaged in
one vof two shallow V-shaped grooves 248‘, 220, so
that the brake I94 is disengaged, and the control
rod and associated parts will be held .yieldably in
the clutching position.
ing switch contact TI9--5._ Since "both the" feed‘
and quick traverse solenoids I66, I68 are now de
energized, the gfeed-quick traverse clutch returns
to the neutral position, as above set forth. '
Assuming‘ that the support ‘is traveling at the
feed rate and that ‘it, is desired to stop the ma
chine, onepof the switches marked “Stop” on
the diagram ispressed, causing'the'entire‘sec
‘ondary circuit to be renderedlinoperative, so that
relay contact R or LB_—¥,-8,0pens, de-energizing'
relay .T, and the contact TI9_—5_ opens. Inas-r,
much as thegentirersecondary circuit is now dis
‘The operation of the electrical control system
connected, the. feed. solenoid. I66 ,is .deeenergized >
of the machine for controlling the operation of;
the feed-quick traverse clutch will bev readily un 75 ' and ‘ the "power operated shift : mechanism: bee’;
tral' position to stop the machine.
wfingers tov-vcausewtheeclutch toqbe shifted Selec-f
‘comes operative to return the clutch'to' the neu
'tively from- any oneto- another of said neutral
It will be ‘(understood that the-‘examples above
3‘ and“ clutching», positions. »
given of'ithe"operationv of the electrical control
' 4. ‘A driving and control-mechanism for a ‘ma
"system including-the feedand 'qui'ck traverse ‘ 5 ;chine- tool-"supportwhich-comprises power¢ driv
ging. connections, for‘ driving the; support" alter
s'OIénoids’lBS, I68 forv the quick traverse clutch
~are"by~ way of ‘illustration-only, and’ that: the
i-nati-velwat feed and quick traverse rates includ
electrical controls described- are equally well
~ ing .a feed and quick (traverse clutch- havingwneu
' adapted for operation'in accordance with other
- tralw; and 1 alternative ",feed {and quick ;- traverse
Operating cycles. ‘It willbe understoodlalso that
i10 '- clutching positions; and - cont-r01 ' means : therefor
comprising‘ » an I " axially- movable 'clutchj 2; shi-f ting
" 'the several operating switches illustrated may
' rod,- av continuously>rotatings camahavingzitsl rota
‘be controlled either manually or by" automatic
tional; axis parallel .withthat ;of<~;the,= shift; rod,
and having cam-‘surfaces "diSPOSGd‘i'Ql'l opposite
“The nature and scope of the invention having
been indicated and a machine embodying the/'15 faceswhereof?and'followerimeansfcomprising a
means, if so desired.
' pair-of shifting ‘?ngers-each having two camiten
several features'o-f the present invention having
1gaging-surfaces;stepped;- outwardly with relation
‘been speci?cally described,v what is claimed is:
-rl30'-. one: another~ supported- on ‘ said‘ rod‘ and ar
1. A driving-and control ‘mechanism for a’ ma
yrangedat» opposite sidesof therod axis to be acted
’chine tool support which comprises power'driv
ing connections for driving the support 'alternai 1:20 .‘upon, bysthe respective-‘cam surfaces; said '?ngers
:qbeing arranged» for one angular position-of the
tively at vfeed and quick traverse'rates includingr
‘a' feed-quick traverse ‘clutch having neutral and
‘~rodJ-with-t-the‘ outer-_ stepped portions thereof in
1 rtherpath of-.the"respecti-ve operating surfaces to
-maintain the rod- caxiallyinlneutral position, said
.25 : ?ngers :being; further-- arranged f-sov that ~, for a
rockedposition of'the rod in either; direction from
\.saidaangulanposition, oneyof' said ?ngers ris‘lo
alternative'rfeed and quick traverse clutching po
sitions, and'control means therefor comprising
clutch ‘shifting means, a continuously rotating
cam ‘element having operating'surfaces co-acting
with said clutch shifting means to shift the clutch
"in-opposite directions, follower means connected
.cated with the inner, stepped vportion -thereof in
is operative relation .to (its cooperating- .cam surface
surfaces arranged to be acted upon selectively by 3 0 landltheother“of-said ?ngers “is wholly removed,
' with said clutchfsh‘ifting means having follower
.fromiits cooperating camlsurface, and , meansfor
said operating .surfacescxfor. shifting the clutch,
.rockingithelshift rod, in eitherdirection- to, and
' andsmeans‘ forl'shifting the follower “surfaces and
1" operating surfaces relatively to cause selected'fol
’ i .
lower and operating surfaces to co-act selectively
_ 5.,7A,drivingandicontrol
with one another to shift the clutch from any I 3.)rgchinentool support WhIChlCOmPI‘ISBS‘,p0W€1'>dI'1V_
- ing connections ion driving the support alterna
one to another of said neutraland ‘clutching po
ntivellbat feedmand quick traverse ‘rates , including
I: 2. A‘driving and control mechanism for a ma
, l a‘ 'feed—quick,_traverse, clutch s having neutral and
chine tool support which comprises'power driv
, alternative, ,feed ‘and __quick __traverse-. ,clutching
uing’connections for'driving the support alter 40 positions,‘ and controlmeanstherefor comprising
clutchr shifting; means,_ 7 a.‘ continuously, rotating
"natively at feed and ‘quick traverse rates includ
ing a'feed-quick' traverse: clutch having neutral
andzalternative feed‘ and. quick traverse clutching
camlelefment i having oppositely “disposed operat
1 ing surfaces, follower= means" associated withtsaid
1 Clutch shifting meansarransedltq ‘be acted, upon I
positions, and contrlol'rneans therefor comprising
' clutch ‘shifting means,‘ a . continuously rotating M15 by said innervating. surfasesiol'?hiftinatheplutch, ’
cam element having oppositelydisposed operat
and electrically operated. positioning devices in
' ing surf-aces, followerineans' connected with said
of; the ‘follower me'ans'to ‘the operatinglsurfaces
cluding, a solenoid for, controlling the“ relation
clutch shiftingmeans comprising>,a‘pair of shift
tpjcause the v‘clutch to be, shifted‘ selectively from
?ngers shiftable for engagement‘iin a plurality of '
one to another of said
neutral and clutching
i different operating relations respectivelywith said j50 any
oppositely disposed operating surfaces for shifting
"the clutch, and operating meansvfor shifting said
"?ngers for controlling the relation of said ?ngers '
to v‘the’ respective operating surfaces to cause the '
‘connections for driving the'support alternatively
KGQ'A“ driving and control mechanismfor a ma
chine tool support‘whichcomprises power’driving
‘clutch to=be ‘shifted selectively from¢ any one to ‘ 5 _ at feed and quick traverse rates including a feed
' another of said neutral and clutching positions. v
? ° ‘quick ‘traverse clutchhaving neutral and alter
native feed > a'ndquick traverse "clutching ‘posi
_‘ tions,Tand* control means therefor comprising
I 3. A driving and control mechanism for~a ma
" chine tool support which comprises power driv
‘ clutch" shifting means, a continuously rotating
“réiing connections for driving the support‘ alterna
7 “caml element ‘having oppositely 'disposed' operat
Ttively at feed and quick traverse rates‘ including
firig surfaces; follower-meansassociated with'said
a feed-quick traverse-clutch having'neutral and 1 60‘ "clutch
shifting'means comprising'a' pair of shift
alternative feed and quick traverse clutching
'l‘?nge'rs arranged for engagement respectively with
* positions; and control means therefor comprising
‘laiclutch shifting member, a continuously rotat
*said ‘oppositely disposed operating surfaces for ‘
shifting" the v‘Iclutch; and; electrically- operated '
ing-'cam'element having cam surfaces disposed on ' 65 positioning means for ‘moving said ‘?ngers. se¢
‘ opposite facesl’th'ereof, and follower means com
3' 'tive'
into the path of‘inovem'ent"of'thei'respeccause-the clutch to‘ be, '
’ prising‘ a "pair-‘of shiftingi?ngers associated with
said clutch shifting 'memberyeach having 'two
'cam' engaging surfaces ‘stepped outwardly with
- shiftedtoone ortheotherpf said clutchingiposi
relation’ ‘to one *another varranged vto be I’ acted 270’ 7;:Ai'driving and controlwmechanism forama- ‘
upon by the'respective operating surfaces, means I
chine‘ tool support whichpomprises power vdriving '
for controlling the position of ‘said ?ngers to‘move
" one or the other of' said stepsof a selectedi?nger Jatifeed 'andiquick traverse rates including a, feed .
.5 into » the“ path 1of' movement ‘of the cooperating . -: and v. quick‘: traverse; clutch having; neutral. and
:Icam, and ‘means forishiftingthe position ‘ofisaidi' 751z'aiternativej:{feeds and; quick e traverse {clutching}
other of said neutral and clutching positions, and
means for controlling the angular position of said
rotatable shift rod, continuously driven operat
shift rod.
shift rod arranged to be positioned with relation '
to said operatingmeans by rocking movement of ~
13. A driving and control mechanism for a ma
chine tool support which comprises power driving
connections for driving the support alternatively
at feed and quick traverse rates including a feed
quick traverse clutch having neutral and alterna
tive feed and quick traverse clutching positions,
ing means, follower means associated with‘ the
the shift rod to shift the rod axially and the
clutch therewith positively from anyone to an'-_
other of said neutral and clutching positions, .
electrical means acting when energized to rock
the shift rod to one of said clutching positions,
and control means therefor comprising clutch 10 and spring vmeans rendered operative upon the - '
de-energizing of said electrical means to rock said
means, follower means associated with the clutch
shift rod to the neutral position.
shifting means arranged to be acted upon by said
15. A driving and control mechanism for a ma. ‘
‘chine tool support which comprises power driving
operating means for shifting the clutch, electrical
operating positioning means acting when ener 15 connections for driving the support alternatively
gized for controlling the relation of the follower
at feed and quick traverse rates including a feed
I quick traverse clutch havingneutral and alterna
means to the actuating means to cause the clutch
to be shifted positively to one of said clutching
tive feed and quick traverse clutching positions,
positions, and yieldable means rendered operative
mechanical braking means in said driving con
by the de-energ‘izing of said electrical positioning 20 nections, and control means therefor- comprising
clutch shifting means, electrically operated posi
means for controlling. the relation of the follower
means to the actuating means to cause the clutch
tioning devices acting when energized to render
to be shifted positively to the neutral position.
said clutch shifting. means operative to shift the
14. A drivingand control mechanism for a ma
clutch to one or the other of said clutching posi
chine tool support which comprises power driving 25 tions and to release the braking means, and
connections for driving the support alternatively
spring means acting in opposition to said elec
at feed and quick traverse rates including a feed
trically operated devices and operative whenthe
same are de-energized to shift the clutch to neu
quick traverse clutch having neutral and alterna
tive feed and quick traverse clutching positions,
tral position and to set the brake,
and control means therefor comprising‘ clutch 30
shifting means including an axially shiftable and
shifting‘ means, continuously driven operating
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