close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2124347

код для вставки
July 19, 1938.
w. F. GROENE El‘ AL
2,124,347,
CENTER DRIVE CAMSHAFT LATHE
Filed Jan. 21, 1957 '
1ov Sheets-Sheet 1
138
137
B343
132
' 13s
131
150
IA...
_
BY
,
INVENTOR.
WILL/HM F. GROENE
Ross M.BHCON
ATTORNEY.
July 19, 1938-
w. F. GROENE ET AL
2,124,347
CENTER DRIVE CAMSHAFT LATHE
Filed Jan. 21, 1957
u-
*“v
8
10 Sheets-Sheet 2
1
:t
INVENTOR.
WILL/HM F. GEOENE
BY
Ross M1 BACON
I
ATTORNEY.
July 19, 1938.
'
'
‘
w. F. GROENE El‘ AL
2,124,347
CENTER DRIVE CAMSHAFT LATHE
Filed Jan. 21, 19:57
'
10 sneéts-sheet 5
AB
CARIGE TRAVEL
A ‘B
CARRIAGE |
‘INVENTOR.
WILLIHM F. GEOENE
.BY'KQLIWMS.
ATTORNEY.
July 19, 1938.
w, F_ GROENE' Er AL
2,124,347
CENTER DRIVE CAMSHAFT LATHE
Filed Jan. 21, 1937
' l0 Sheets-Sheet 4
ZOE'
STAR STOP I’I6UTOMA
[I
| | '
‘4*
w
'
‘
‘
INVENTOR.
WILL/HM F. Grace/v5
Ross M. BACON
'
ATTORNEY.
July 19, 1938.
F. GRO‘ENE ET AL
'
2,124,347
CENTER DRIVE CAMSHAFT LATHE
Filed Jan. 21, 1937
‘10 Sheets~Sheet 5
95":
Nm
v
‘
BY
-
INVENTORV
WILL/RM F. GROENE
g‘1205.5 M.Bnco~
ATTORNEY.
July 19, 1938-
w. F. GROENE ET AL
I
CENTER DRIVE CAMSHAFT FIATHE
Filed Jan. 21, 1937
2,124,347
I
10 Sheets-Sheet 6
51
// l
15o
FIGEI
211
INVENTOR.
\
WILL/m FGROENE
Ross M..BHGON
ATTORNEY.
July 19,. 1938. -
w. F. GROENE ET AL
2,124,347
CENTER DRIVE CAMSHAFT. LATHE
Filed Jah. 21, 1957
10 ‘Sheets-Sheet 7
mi
IN
55
. 2m
July 19, 1938-
W.VF. GROENE ET AL '
‘2,124,347
CENTER DRIVE; CAMSHAFT LATHE
Filed Jan. 21, 1937
10 Sheets-Sheet 8
In
5’
"
BY
INVENTOR.
,
MILL/am F. GROENE
Ross M. BHGON
‘ATTORNEY.
July 19, 1938. .
'
w.- F. GROENE ET AL
CENTER DRIVE CAMSHAFT LATHE
Filed Jan. 21, 1937
3
"
‘
10 Sheets-Sheet l0
k3
l
r
2,124,347
l
FIQXHI
I lI
LS-C
ao1—
INVENTOR.
‘
WILLIFIM E Groane
Ross Mbncov
ATTORNEY. I
2,124,347
Patented July I9, 1938
._UNITED_ STATES
PATENT OFFICE
2,125,347
_
.
CENTER DRIVE CAMSHAFT LATHE
William F. Groene and Rose M. Bacon, Cincin
nati, Ohio, assignors to The R. K. Le Blond
Machine Tool Company, Cincinnati, Ohio, a
corporation of Delaware
' Application January 21, 1937, Serial No. 121,510
17 Claims.
Our invention pertains to center drive lathes
adapted to chuck and rotate relatively long
shafts, axles, and the like, intermediate the ends
thereof so that machining operations may be
(Cl.
82-—19)
'
.
N
.
fully automatic mechanism for relieving the
turning or longitudinally feeding tools from cut
ting position during' the return travel of the
tools to initial starting position, the purpose of
which is to prevent scoring of the work surface
5 undertaken simultaneously and with a single _
<
i
1
chucking operation on the major portion of said already turned.
We also contemplate providing a manual
workpieces. More particularly this invention
means for operating the tool carriages and a
pertains to a lathe adapted to machining hear
safety device in connection with said operating
ing and other surfaces on camshafts for inter
means
to prevent surprise operation of the rapid 10
nal
combustion
engines.
10
traverse motion of the carriages and possible
' Prior to our invention camshafts for multi
injury to the operator.
cylinder internal combustion engines were
chucked and rotated intermediate the ends of
the camshafts but tools were applied to ma
15 chining only one end of the work, the work later
claimed in application Serial No. 108,039, filed 15
Oct. 28, 1936.
Further objects will appear in the course of
the following description of the drawings in
being rechucked in another machine to complete
the other end of the work. Because of the rela
tively frail nature of such a camshaft it has long
been considered impractical to attempt to simul
taneously machine both‘ ends and intermediate
portions of said camshafts by a ‘single chucking
operation in a single machine.
'
In connection with this lathe we prefer to use
a. chucking device of a character disclosed and
which:
-
'
_ Figure I is a perspective view of'the front of 20
a lathe incorporating the principles of our in
vention.
Figure
By our inven
11 is a perspective view of the rear of
tion we have greatly increased the e?iciency of
the art of camshaft turning in that we have ‘the lathe shown in Figure I.
Figure III is a plan view of the intermediate 25
25 combined the former two operations into a single
operation thereby e?'ecting' great savings ‘ in portion of the lathe showing the relationship
equipment, handling, and in producing more ‘of the ‘work, the chucking mechanism, and the
accurate and greater quantities of the ?nished \ cutting tools as applied to simultaneously ma
chining all the bearing portions and related sur
shafts with considerably less effort.
faces
on a camshaft for a multi-cylinder inter 30
‘An object of our invention is to provide a lathe
whereby turning operations may be undertaken ' nal combustion engine. -
Figure IV is a plan>view partly in section on
on the ends and intermediate portions of rela
tively long, slender work pieces.
line IV-‘IV of Figures VI, VII, and VIII, show
ing the main driving mechanism for rotating
.
Another object of our invention is to provide
the work holder and the power takeoff for the 35
35 a lathe wherein a camshaft may be chucked
and rotated and tools applied to said camshaft
whereby all of the bearings and associated port
I tions may be simultaneously turned in a single
operation.
40
‘
Our intention is further to ‘provide a relatively
simple and efficient feed mechanism for the lathe
wherein none of the feed transmission is reversed
50 during the machining cycle, the purpose of which
is to eliminate ‘costly reversing mechanism in
connection with the feed transmission and‘ also
to eliminate the shock and strain on the appa
ratus inherent in reversible mechanism.
Still another object is to provide simple and
-
Figure V is a diagrammatic Layout of the elec
trical operating and control circuit and associ
ated devices of the lathe.
-
Another object of our invention is to provide
a center drive lathe adapted to chuck and rotate
a camshaft intermediate its ends and to apply
tools to the workpiece whereby all the main
bearing portions, gear ?t, oil grooves, and cham
fering of said main bearings may be simultane
ously accomplished in a single operation.
feed mechanism.
.
I
Figure V1 is ‘a vertical transverse section 40
through the lathe on the line VI-VI of Figures
IV and VIII particularly showing the rapid trav
erse drive mechanism and the operating mecha
, nism for the combined clutch and brake. '
, Figure VII is a vertical transverse section 45
through the lathe on the line VII—VII of Fig
ures IV and VIII particularly showing the clutch
for engaging and disengaging the feeding mo
tion and control mechanism associated therewith.
Figure VIII is an enlarged front elevation of the 50
left hand portion of the lathe showing particu
larly the rapid traverse drive mechanism and
the safety device for preventing actuation of
the traverse motion of the carriages when the
55
carriages are being operated manually.
> 2
2,124,347 r
Figure IX is a vertical transverse section shaft may also be braked from further rotation or
through the lathe on the line IX-IX of Figures coasting immediately upon disengagement of the
‘ III and X showing the relationship of the front driving pulley 32 from said main drive shaft 40.
and rear tool carriages and the cam mechanism
The main drive shaft 40 is journaled and con
for actuating said tool carriages.
, ,
_
?ned from axial movement in anti-friction bear
ings 4| and 42 appropriately mounted in the
Figure X is a front elevation of the front turn
ing or longitudinally feeding tool carriage, partly , housing 38 and has an end portion 43, which pro
broken away, to more clearly show the cam
jects through a suitable closure cap 44 attached
mechanism for actuating the carriage and re
10 lieving the turning tools from the work upon
to housing 38, to which is ?xed a universal joint
45. Also ?xed to the universal joint 45 is the
their return to initial starting position. ,
Figure XI is an axial view of the.cams for
actuating the rear tool carriages.
'
-
Figure XII is a layout of'the periphery of the
cam for actuatingthe front turning or longitudi- .
'nally feeding carriage and relieving the turning
tools from the work' piece.
Figure XIII is a plan view partly in section on
line XIII-XIII, of Figures VI and VII particu
20 l'arly showing the control mechanism for the com
bined‘ brake and chuck and rapid traverse mechaé
nisms.
~
shaft‘45 which-in turn is connected to the driv
ing pinion shaft 41 of the center drive chuck
member ID through the universal joint 48. The
shaft 41 carries the usual ‘driving pinion (not
shown)_for driving the ring'gear (not shown) of 15
the chucking device 49 of the center drive chuck\
member In. It can thus be seen that through
this mechanism driving power from the motor 3|
may be .applied or disconnected from the center
drive chucking device 49 in the member |0'.
20
Y Feed driue mechanism
The general arrangement, Figs. I, II, and III, of
Fixed to the main drive shaft 40 intermediate
the lathe comprises a bed I which is supported on the anti-friction bearings 4| and 42 is a worm 50
legs
2
and
3.
Mounted
on
the
bed
I
are
tailstocks
25
‘adapted to drive the worm wheel 5| (Fig. VlI) 25
4 and 5 each having axially reciprocatable spin-0
dles 6 supporting centers 'l which spindles 8 may
be adjusted axially by means of the usual hand
wheels 8 and locked in adjusted position by means
I
30'
of the usual lever clamping means 9. \On the bed
I between the tailstocks 4 and 5 is also mounted
a center driv‘é chuck member III which is adapted
to grip and rotate a camshaft II intermediate its
ends, as for example in a manner shown in appli
35 cation Serial No'. 108,039, ?led Oct. 8, 1936.
Noting particularly Fig. IH, each side of the
center drive chuck member I0, and between the
tailstocks 4 and 5, are located turning or longitu
dinally feeding tools I2, I3, I4, and I5 adapted to
turn the outside diameter of all the main bearings
‘IS, IT, I8, and I9, respectively; and the tool 28
adapted to turn the gear ?t diameter2| of the
cam shaft ||. Also arranged each side of said
center drive chuck member I8 and between said
45
5.0
55
60
rotatably mounted on the bearing portion 52
and con?ned from all axial movement of the
worm wheel shaft 53 which'is journaled and con
?ned from axial movement by the anti-friction
bearings 54 and 55 appropriately mounted in the v30
housing 38. Mounted on the shaft 53 between
the worm wheel 5| and anti-friction bearing 54
is a clutch member 58 adapted to slide axially of
the shaft 53 but to rotate positively therewith and
having clutch teeth 51 adapted to engage or dis
35'
engage mating clutch teeth 58 ?xed ‘on the worm
wheel 51 by axial'movement of the clutch mem
ber 56. It can thus be seen that by this ar
rangement the worm wheel 5| may be caused to
alternately drive the shaft 53 or to rotate freely 40
on said shaft.
,
'
_
Referring particularly to Figures IV, VI, and
VII, the worm wheel shaft 53 projects rearwardly
of the lathe beyond the bearing 55 into aupocket
tailstocks 4 and 5 are cutting tools 22-23, 24--25, ' 59 and has the usual splined portion 80 to which 45
28—2‘|, 28-29, and 38, which feed transverse of ' may be. applied suitable change gears, as, for ex
the workpiece to thereby chamfer and oilgroove ample, the gear 6| held in place. \on the shaft 53
all of said main bearings I6, I'I, I8, and ‘I9, re
by nut 82. vArranged parallel with the worm
spectively, and ,chamfer the end of the gear ?t wheel shaft 53 is a shaft 63, journaled on and
2|. Such an arrangement as just described per
con?ned from axial movement by the anti-fric
mits the complete machining simultaneously of tion bearings 94 and 65 appropriately mounted in
all the main bearings and associated portions of the housing 38 and has the usual splined portion
a-camshaft in one operation.
66, projecting beyond the bearing 84 and into the
pocket v59, to which may be applied suitable
Work rotating mechamsm
change gears as, for example, the gear 6‘! held in 55
The source of power for rotating the center place by nut 68 which gear is adapted to be driven
drive chuck in the member - I 0 is_ derived from the . by gear 6| on the worm wheel shaft 53.‘ A cover usual electric motor 3| (Fig. V) which is mounted 69 is removably mounted over the pocket 59 for- _
inside the leg 2 and is connected to the main 'drivs easy access to said change gear mechanism.
ing pulley 32 by means of the usual V-belts
On the end ‘III ‘of the shaft 53 projecting beyond 60
housed in the cover 33 at the left hand end of the the bearing. 55 is fixed an over-running clutch 'II
lathe. The main driving pulley '32 (Fig. IV) is
by which the shaft 12 may be rotated in only one
rotatably mounted on suitable bearings 34 and 35 direction, clockwise as shown in Figure VIII, as
carried on the projecting hub 38 of the bracket is characteristic of over-running clutch devices, so ‘
65 31 which bracket in turn is secured to the trans
that the shaft 12 may ohlybe rotated by the shaft 65
mission housing 38 mounted on the left hand end 63 for forward feeding motion through the mech
of the bed by means of the ?ange 38a and bolts anism about to be described. The shaft 12 is
38b and incorporates a combined clutch and journaled on and con?ned from axial movement
brake mechanism 39 substantially as fully dis-J x by the anti-friction bearings 13 and ‘I4 appropri
70 closed and claimed in Patent 1,474,112 issued Nov. ately mounted in the housing 38 and has a worm '
13, 1923, which mechanism will therefore not be
described in detail here. By means of this com
‘I5 ?xed thereon intermediate these hearings
which is adapted to drive the relatively large
bined clutch and brake mechanism 39, the main
worm wheel ‘I6 mounted on the shaft 1'! extending
drive shaft 40 may be alternately connected-or
longitudinally of the lathe and appropriately
75 disconnected from the‘ driving pulley 32 and said
journaled in the housing 38. The shaft 11 pro
75
3
2,124,347
jects to the right (Figures I and VIII) from the
housing 38 and has an end portion 18 to which
is ?xed a coupling ‘I8 which in turn is ?xed .to the
‘feed drive shaft 88 for the front carriage 8|. The
shaft 11 also‘ projects to the left- into a pocket 82
mounted for movement longitudinally of the' bed
I‘, in a guide comprising the faces I88, H8, and
III, and'held in proper engagement with said
faces by suitable gibs II2 secured to the car
riage 8| by screws II3. A cam roller H4 is ro
formed in the housing 88 and has a relatively
tatably mounted on an appropriate stud I I5 ?xed
large gear 83 ?xed on said projection which gear
is adapted to drive an idler gear 84 rotatably
mounted on- a stud 85 ?xed in the housing 38,
10 which idler gear, in turn, is adapted to drive the
gear 86 fixed on the feed drive shaft 81 for the
in the cam plate I88 and engages in the cam slot
I84 so that upon rotation of the cam I82 by shaft
rear tool carriages 88 and 88.
88 the cam plate I88 may be actuated longitu
10
dinally of the bed I and carriage 8|.
A pair of cam rollers I I8, appropriately mount
This arrangement ' ed on studs II'I ?xed in the cam plate I88, engage
clearly sets forth the mechanism whereby both
in slots “8 (Fig. III) of cams II8 secured to the
tool slides I28 by screws I2I, the tool slides I28
15 be simultaneously actuated in feeding motion being arranged to slide to and from the axis of 15
‘the lathe on the usual dovetail guides I22. It'
from the main drive motor 3|.
can thus be‘ seen that when the cam plate I88 is
the front and rear carriage feed mechanisms may
Rapid traverse drive
‘ moved relative to the carriage 8| the cam roller
Noting particularly Figures VI and VIII, power ||8will likewise be moved in slots “8 of cams
II8 so as to cause transverse movement or move- 20
20 for actuating the tool carriages in rapid traverse
movements is derived ‘from the .electricymotor
88 mounted on the housing 38. The shaft 8| of
the motor 88 projectsv into a compartment 82
formed integral with the housing 38 andhas a
pinion 93 ?xed thereon which is adapted to drive
the idler gear 94 appropriately rotatably mount
ed on a stud 85 ?xed in the housing ,38, which
idler gear in turn is adapted to'drive the gear 88
secured to the shaft 12. It can thus be seen that
80 by energizing the motor 88 the shaft ‘I2 and the
mechanism driven through the worm ‘I5 and
worm wheel ‘I8 may-be rotated bylsaid motor. It
is to be .noted (Figure VIII) that the motor is
arranged to rotate the shaft ‘I2 only in the. same
35 direction as it is normally rotated in feeding mo
tion by the shaft'83 as described. It is also to
be noted that by use of the over-running clutch
‘II the motor 88 may at any time be energized to
accelerate and rotate the shaft 12" at a relatively
40 much greater speed than it is rotated by shaft 83
' without in any way affecting the rotation of shaft
83 and the driving mechanism connected thereto,
and, by de-energizing the motor 88 theshaft ‘I2
will again be automatically driven by the shaft
45 83 when the rate of rotation of shaft ‘I2 has de
ment of the slides I28 to or from the workpiece
II.
On the tool slides I28 are mounted appro
priate tool holders m, I24,- I25, and I28 for
holding the respective tools I2, I3, I4, and I5 and
28 which perform cutting operations as already 25
described.
The movement of the tool slides I28 and the
tools mounted thereon relative to the work piece
of camshaft II, is diagrammatically shown by the
arrows A-Ba-C-D indicated on the slides I28 30~
and the movement of the carriage 8| on the bed I
is shown by the arrows A—B and C--D on the ‘
carriage shown in Figure III. Noting particular
ly Figures III and XII, at the beginning of the
machining cycle the slides I28 and carriage 8|
are at A, the tools I2, I3, I4, I5, and 28 being
withdrawn from cutting position and to the right
of the respective portions I8, II, M, I8 ' and 2|
to be turned on the camshaft II. As the cam I82
is rotated, the roller II4 is moved longitudinally .40.
from A to B in the cam slot I88 while the roller
I88 does not move as it travels from A to B in slot
I88 as this portion of the cam' slot I83 is parallel
to the direction of rotation of the cam i82. Thus
the carriage is held stationary relative to the bed 45
of the lathe while the cam plate I88 is moved
arrangement the tool actuating mechanism may relative to the carriage 8| whereupon the rollers
be rotated constantly in the same direction, except “6 bearing against the angular vportions I21 of
when stopped for loading or unloading work in the slots N8 of cams II9 cause the slides I28 to
50 the lathe, and that at any'desired time rapid travel toward the work to cutting position, indi 50
' celerate‘d to the speed of said shaft 83. By this
traverse motion may be imposed upon said mech
anism or may be disconnected therefrom and the
feeding automatically continued.
5.5
Front tool carriace.
Referring particularly to Figures III, IX,'X,
and XII, the feed drive shaft 88, which is con
?ned from axial movement by being connected to
‘ the shaft ‘Ifl as described/is supported in suitable
60 journals 81 and 88 in the brackets 88 and I88..re
cated by arrow‘ A-B, Fig. III.
Next, the roller 688 is caused to follow the an- '
nularly disposed portion from B to C of the cam
slot I88 upon continued rotation of cam I82 to
- thereby ‘cause longitudinal feeding of the car 55
riage 8| to the left (Fig. III) so as to cause the
aforementioned cutting tools to turn their re
spective'portionsto ‘be machined. In order to
maintain the rollers II8 in position for holding
the slides H8 in proper cuttingposition as shown
spéctively, these brackets being secured to the bed in Fig. III the portion of the'slot I84 of cam I82,
I of the lathe by suitable screws I8I. On the traveled by roller II4 from B to C, \"Is arranged
"shaft 88, between the bearings 81 and 88, is ?xed " parallel with the same portion B to C‘of slot I83
the cylindrical cam I82 which has a pair‘of cam so that there will be no relative motion of the
65’ slots I83 and I84 arranged around its periphery. cam plate I88 and the carriage 8|, the cam plate
Noting Figures IX and X the front carriage 8| 8| being moved relative to the bed I of the lathe
is mounted for“ longitudinal movement on the
at the same rate and in the same direction as
lathe. A’ cam roller I88, is rotatably mounted on
70 an appropriate stud I81 ?xed in the“ front car
this arrangement theturning or longitudinal feed
60
65
usual dovetail slide I88 along thebed Iof the": that of the relative movement of the carriage
riage 8|, and engages inthe cam slot I88so that
upon rotation of the cam I82 by-shaft 88 the
front carriage 8| may be actuated longitudinally
of the bed I.
'
» A relatively long cam plate I88 is slidably
8| to. the bed I in traveling from B .to C.
By
operations on the workpiece are'completed. ' I
At the completion of the, turning operation the‘
roller I88 is again caused to follow, a portion of
the cam slot I88 ‘from C to D, which. is parallel
to the direction of motion of the cam I82, where 75
' 9,194,841
by the carriage 8 I is held stationary on the bed
The same reference characters A. B, C and D
at the, completion of said turning. Meanwhile (Figure III) have been used for ‘both the front
the roller. H4 is caused to follow the angularly turning tools and the rear ‘forming tools so as
related portion of cam slot I04 from C to D‘ to more clearly show the relative positions si
whereby the cam plate I08 is moved relative to multaneously assumed by both groups of tools
the carriage 8i causing the rollers iii to bear during the machining cycle. For example as
against the angular portions I28 of the cam slots the front tools-are moved from A to B into cut
II8 of cam II8 and thereby start the withdrawal ‘ ting position the rear tools (as indicated by thev
arrows on the rear tool carriages 88 and 88 of
Figure III) are moved from A to B in rapid 10
arrow C-D of Figure III a substantial distance traverse; as the front tools move from B to C
from the .work before the carriage 8i and slides performing the turning operation the rear tools ,
I20 are simultaneously moved to the initial start
move from B to C at coarse‘ feed for the purpose
ing position A as roller I08 is caused to move along of removing any excessive stock or ?ash which
15 the angular portion of slot I03 from D to A, might exist on the work .I I. Normally, no actual 16
. returning the carriage, and roller H4 is caused , cutting is done by the rear tools during their
to continue along the angular portion of slot I04 travel from B to C. Next, the front tools are
‘of the slides and tools from cutting position, the
10 tools being moved along a path indicated by
from D to A tofully retract the slides I20 and
the tools from the work piece, the slides and
tools following a path relative to‘ the bed I sub
stantially as shown by arrow D--A of Figure III.
It can thus be seen that by this mechanism we
provide means actuated from a non-reversing
source of power to bring turning tools to position
for turning operations and to relieve said tools
from said position when returning the tools to
initial starting position for the purpose of pre
venting any marring of the previously turned
surface._
.
Rear tool carriages
withdrawn from cutting position from C to D
while the rear tools begin and complete the form
ing operations and dwell from C to D1—D; and
?nally the front tools are further retracted and
returned to initial starting position from D to A
while the rear tools are similarly retracted to
their initial starting position from D to A. It is
to be noted that as the tools travel from A to B
and from D to A the feeding cams and the) shaft
80 and 81 associated therewith are rotated‘ at
rapid rates by the rapid traverse motor 88 by
. means of the mechanism already ‘described and
that as the tools travel from B to D said cams 30
Referring particularly to Figures III, IX, and and shafts are rotated at feeding speed directly
\ EU, the rear tool carriage 88 is pivotally mounted
and axially confined on the shaft I29, which shaft
‘is ?xed in the tailstock 4 and the center drive
‘chuck member I0 and the rear tool carriage .89
is pivotally mounted and axially con?ned on the
shaft I 30, which shaft is fixed in the tailstock 5
and the center drive chuck member I0. Appro
priate tool holders I3I, I32, I33 and I34 carry the
40 respective tools 22—23, 24—25, 28—2‘I, and 28— '
29-30 on the integral upright standards I35 and
I38 of the carriage 88 and, I3‘! and I38 of car
45
riage 88. Suitable elongated holes I3Ia and
I32a are provided in the standards I3I and I32
toallow passage of shaft 46. On the lower rear
ward portion of each tool carriage 88 and 89 are
formed integral forked projections I39 which
carry a roller I40 between the forked ends on a
from the main drive motor II as described. Thus
it can be seen that we provide ‘cam means for
actuating the tools at rapid traverse and various
rates of feed and that we supplement the func- ' 35
tions of the cams with appropriate high and low
speed drives for said cams to render them more
effective in producing said rapid traverse and
various feeding rates of tool movement. It is
further to be noted that we accomplish all of 40,
said tool movements without reversing any por
tion of the lathe transmission.
Operation and control
During the normal operation of the lathe the 45
main drive motor 3| is at all times rotating. The
usual start push button I48 and stop push but- ‘
ton I41 are provided in the push button control
station I48 for turning the motor 8| on and of!
when the lathe is not being used.
50
The combined clutch and brake mechanism
suitable stud “I fixed in said forked portions.
The feed drive shaft 81 is journaled in suitable
brackets I42 and I43 secured to the rear of the
bed I by screws I44 (Fig. II). Peripheral cams 38 is operated by manipulating the starting han
I45 are ?xed on said shaft 81, preferably adjacent dle I48 which has an integral vertical rock shaft
the brackets I42 and I43 for adequate support, I50 carried in bearings I 5|, I52,-and I53 in the
55 which cams I 45 contact and support the rollers ’housing 38 (Figure VI). Immediately below the 55
bearing I5I is a thrust collar I54 and a shifter
I40 of the tool holders 88 and 88, whereby rota
tion of the shaft 81 and the cams I45 will cause yoke I55 ?xed to the shaft I50 to thereby prevent
_ the tooLholders 88 and 89 to be rocked about their axial movement of the shaft I50. The shifter
respective pivot shafts‘v I28 and I30 to move the yoke I55 has the usual shoes I58 at its outer ends
60 rear tools Ill-23, 24—25, 26—2'I, and 28——-29—30, which ride in the annular slot I51 in the shifter
‘spool I58. The spool I58 is free tomove axially
to or from the work piece II.
Noting particularly Fig. XI, the cams I45 have of the shaft 40 upon which it is carried and is
' their peripheries so arranged that upon rotation caused .to rotate with said shaft 40 by means of
of said cams by shaft 81 the rollers I40 are caused the pin I59 which passes diametrically through
50
65 to travel along these cams from A to B to cause
the rear tools to move in rapid traverse toward
the camshaft II; as the rollers travel from B to
the spool I58, through the axially elongated-slots
I80 in the shaft 40,"and through the shifter rod
I8I. By this arrangement the combined clutch
a C said tools are actuated at‘ relatively coarse feed; , and brake mechanism can, be manually rendered
effective or ineifectiye- as fully set forth inPatent
1,474,112 aforementioned ‘so that by moving the 70
travel from D1 to D the tools will be held'stae (handle I48 toward the right hand end of the lathe
tionary in “dwell ‘for ‘sizing the work piece; and as the main motor 3! will be caused to rotate the
the rollers travel from D to A, the tools will be center drive chucking device 48 and to drive the returned from the work in rapid traverse to the ’ feeding ‘mechanism, and that by‘ returning'said,
handle vI48 toward the left hand end of the lathe 75
75 initial starting position A.
.
,
'
as the rollers travel from C to D1 said tools are
70 actuated at relatively ?ne feed; as the rollers
5
2,124,847 . '
handle just after the tools ‘have left position D
(Figure 111) in rapid traversing to the initial
the motor 3I will be vdisconnected and the center
drive chucking device 49 and the feed mechanism
starting position A.
. stopped.
and XIII) is an arm member I62 secured to the
rock shaft I56 by a suitable pin' I63. Below the
' member I62 is pivotally ‘mounted the latch mem
the self closing coolant control valve I92. By 10
10 rock shaft I56.. The latch member is normally
manipulating the starting lever 149 the latch
urged in a clockwise direction ‘(Figure X111)
about the rock shaft I56 by the tension spring I65
connected to a stud I66 ?xed in the housing 38
and connected at its other end to a projecting
_
'
able supports I89 and I96 in the housing 38
which rod in turn contacts the plunger I'9I of
ber I64 on the rock shaft I56and which member
6 is also adapted to axial movement on‘ the said
15 arm I61 of the latch member I64.
.
Means are also provided for automatically con
trolling the coolant supply for the tools compris
ing a pin‘ I81 ?xed on the latch member I 64
which engages the push rod I88 carried in suit
Directly below the bearing I52 (Figures VI, VII,
_
Noting Figures VI, VII, and, XIII, the latch
member I64 is normally urged axially upward, of
the shaft I56 by the lever I68 which is pivotally
member. I64 will be moved as described thereby
starting work rotation and feeding of the tools, '
the pin I81 ~ pushing the rod I88 against the
plunger I9I to open valve I92 causing coolant to 15
HOW to the cutting tools, and upon tripping the
starting lever to stop work rotation and tool
feeding the pin I81 will be withdrawn from rod -
mounted on the shaft I69 and has forked end I88 allowing the plunger to'push the rod I88
20 portions I16 each of which have pins I'll ?xed, and exterrd itself, thereby closing valve I92 and v20
therein and adapted to engage in peripheral shutting oil’ the coolant from the cutting tools.
In Figure V is shown the general arrange
slots I12 in the hub portion I13 of the latch
ment of the control mechanism for rendering
member I64, said lever I68 also having a pro
the rapid traverse motor 96 operative and inoper
jecting arm I14, extending diametrically oppo
,
1
, 25
25 site to-said portions I16, to the end of which is ative at appropriate times.‘
The
limit
switches
LS-—-A
and
LS-B
are
attached a tension spring I15 whose other end
single throw switches which are mounted on
is ?xed to the stud I16 ?xed in the housing 38.
Formed integral with the member I62 is a the, bracket I93 secured. to the bed I by bolts
projecting arm I11 adapted to engage a pin I18 I94, the switches being bolted together each side
30' fixed in the ‘arm I 61 of'the latch member I64
whereby rotation of shaft I56 in an anti-clock
wise direction (‘Figure XHI) will cause similar
rotation in the latch member I64 whereupon the
spring I65 is stretched, and upon release ofsaid.
lever the shaft I56 may be returned in a clock
wise direction by the spring I65.
In order'to hold the latch member I64 in the
anti-clockwise rotated position shown particu
49
larly in Figures VII and XIII, a latch, dog~ I19 is
provided on the latch- member I64 which is
adapted to engage and latch about the catch
plate I86 fixed-yon housing 38 under the in?uence
of the spring I15 and associated mechanism. as
described which normally urges the member I64
and its dog I19 against said catch plate I86. It,
is to be noted that when the latch member I64 is
so heldby the catch plate. I86 the handle lever
I49 is free to be manipulated at any time to
operate the combined clutch and brake mecha
so
nism 39 for stopping or starting work rotation
and tool feeding.
‘
‘
of the bracket I93 by suitablebolts I95. ,Each 30
switch has the usual plunger I96 and roller I91.
The limit 'switch IS-A is actuated by the cam
I98 and the limit switch LS-B is actuated by the
cam I99, both of which cams, are appropriately
mounted on the shaft 81 (Figure XIII). _
_
35
The limit switch LS--C is a two-way switch
adapted to render either switch LS-'—A or LS-B
operative, and is mounted on a plate 266 by
screws 26I which plate inyturn'is secured to the
housing 38 by suitable screws 262, this switch
having the usual plunger 283 and roller 264.
This switch is actuated by the cam portion 265
formed integral with the latch member I64. The
switch normally contacts the terminals 266
(Figure V) when the roller 264 is released as
shown in Figure XIII and when the starting
lever I49 is tripped as described, the cam portion
265 depresses the-roller 264 and plunger 263 so
as to contact the terminals 261 and disconnect
terminals 266.
‘
>
50
The limit switch LS-D is a safety switch
which functions in connection with the manual
Means are provided for automatically disen
gaging the dog I19 from the catch plate I86 so means for actuating the tool carriages.
In the push button station I48 is also pro
as to trip the latchv member I64 and thereby ro
55 tate shaft I56 and disengage the spindle rotation vided a. two-position snap switch 268 whereby 55
andv feeding .at a. predeterminedpoint in the the entire rapid traverse electrical, system may
__machining cycle. This ‘means comprises the . be rendered operative or inoperative by setting
lever'a‘rm I8I formed integral with the lever. I68 the switchr268 either at “automatic” or“‘hand"
which supports a roller I82 on a suitable pin I83 positions respectively as indicated on ‘said switch._ ‘
The operating cycle of the machine is sub 60
60 fixed in the end thereof. On the shaft 81 is
stantially
as follows: The main drive motor 3|
mounted a trip dog‘ I84 having a cam lobe I85
which is adapted to contacttheroller I82 at a is operating‘at all times having been set in mo
predetermined position of rotation of. shaft 81 tion by pressing the f‘Start” button I46. After
and to thereby raise lever I8I (Figures VI and having appropriately loaded and chucked a work
65 VII) against the spring I15 thus moving the piece in the machine,"the starting handle I49 is 65
latch member I64 axially downward to disengage moved to the right (Figure I)...whereupon the
the dog I19 from catch plate I86 whereupon the work is rotated and the feeding mechanism set
in motion. As the handle I49 is so moved the
spring I659 rotates the latch member I84 clock
wise (Figure XIII) and, through the mechanism limit switch LS-C is actuated by latch member
described, disconnects the main drive motor 3I " I64 and its cam 265 to disconnect terminals 261
from the work rotating and feeding mechanism. and connect terminals 266. At this, time the
A suitable adjusting screw I86 is providedtin the > limit switch LSl-A is relieved by the cam I98 .
trip ‘dog I84 so that said dog I84 may be clamped ' and is thereby closed, and limit switch LS-B is
in a circumferential position on shaft 81, prefer
.ably in such a. position as to trip the starting
contacted and held open by cam I99. Under
these conditions the rapid traverse motor 96 is 75
r
e
,
,
»
.
2,124,847
energised to traverse the tool carriages from A ' ally in the opposite direction to normal rotation
.
it will be necessary to disengage the clutch 59
When the tool carriages have been rapid trav
(Figures IV and V11) as the worm ‘wheel 5| can
ersed to the‘ position B, the limit switch LS-A not drive the worm 50 to permit such rotation
is opened by the cam I99 de-energizing the rapid of shaft 12. The clutch 56 may be quickly en
to B (Figure 111). '
traverse motor 90 and arresting the rapid trav
gaged and disengaged by manipulating the con
erse motion, the limit switch 15-3 is relieved
from the cam I99 and. thereby preset in closed
in the bearings 2_I9 and ‘M4 in the housing 99,
- position for rapid traverse return, and the limit
switch 18-0 is still maintained with terminals
209 in contact. With this arrangem nt the, tool
carriages are actuated in feeding
ovement
\ from position B to position D to thereby complete .
trol lever 2“ to rotate the shaft 2i2 journaled'
which shaft has an integral tooth 2l5 out there
on which engages in the annular slot‘ H6 in the 10'
clutch member 56 so that by rotation of the -
shaft 212 said clutchmember 59 may be moved
axially. for engagement or disengagement of the
the machining portion of the cycle for all the
clutch teeth 51 and‘ 58.
tool carriages.
A safety device is provided whereby the rapid 15
traverse motor cannot be rendered effective to
rotate the shaft 12 at rapid traverse speed so
-_
'
I.
When the position Dhas been reached the cam
lobe ill of the trip dog I94 contacts the roller
I82 and thereby trips the starting handle I49 to
5 stop work rotation and tool feeding movements
as described, whereupon the cam 299 of the latch
‘member I94 depresses the roller 2'04 and plunger
203 of limit switch LS-C disconnecting terminals
206 and connecting terminals 201. Meanwhile
the limit switch LS-A is still held open by the
cam I98 and the limit ‘switch 18-13 is still re
lieved from the cam I99 and remains closed.
Under these circumstances the rapid traverse
motor 90 is again energized to thereby withdraw
the tool carriages to the initial starting or load
ing andunloading position A.
As the tool carriages reach position-A the limit
switch LB_—A is relieved of the cam I99 and
preset in closed position and the limit switch
18-8 is actuated by cam I99 and held open, the
limit switch LB-C still maintains the- terminals
201 in contact so long as the starting handle
“9 remains‘ tripped to disconnect the motor 3|
from the work rotating and feeding mechanism.
Upon again moving the starting handle I49 to
the right-the limit switch I.'8-‘-C will disconnect
, - terminals 201 and connect terminals 209 to there
- by repeat the cycle described above.
>
long as the crank handle 2l0 is applied to the
squared end portion 209 thereof. This device
comprises the normally open limit switch I$-D 20v
conveniently placed near the end 209 of the shaft
12 and connected in series with the motor 90 so
that said motor can only be rendered operative
by closing said switch LS_——'D. The switch LS—D
is fully enclosed, in a pocket 2|‘! covered by the 25
cover ‘M8 and has a stud'2l9 ?xed in the pocket
2" upon which may be placed the crank handle
2“) in such a way as to close the limit switch
18-D. It can thus be seen that when the crank
handle M0 is placed on the end 209 of shaft 12 30
the limit switch LS—D will be open preventing
operation of the motor 90 and before the motor
can be rendered operative the crank handle 2“!
must be removed from the end 209 and placed
on stud 2i9 so as to close limit switch 1S-D.
35
Having fully set forth and described our in
vention what we claim as new and desire to se
cure by Letters Patent is:
-1. In a lathe, a. rotatable work holder, ‘means
for rotating said work holder, tool feeding de 40
vices reciprocatable relative to a work piece in
J said work holder, rotary cam means for longi
When »it- is desiredto use the starting handle‘ tudinally feeding said tool feeding devices, com
I49 for inching the center drive chucking device
49 around for unclamping the work piece there
1 ' from, the cam I99 is maintained in contact with
- limit switch LB-A to hold said switch open as
bined rotary and straight cam means for reliev
ing said tool feeding devices‘relative to the work
piece, and non-reversing transmission mecha
45
nism operable by the means for rotating said
the tool carriages travel back and while said
carriages remain at position A. The cam I99 is
work holder to render said cam means effective.
so arranged under these conditions that when
for rotating said vwork holder, tool feeding de 50
the starting handle is moved to begin the operat
ing cycle‘ the tool carriages move to the work
piece under‘ feeding speed during a few revolu~
tions of the chucking device 91 before entering
into rapid traverse movement toward the work.
The starting handle I49 may be manipulated to
inch said chucking device a few revolutions when
the tools are at the starting position without the
2. In a lathe,-a rotatable work holder, means
vices operable to ‘feed cutting tools to and from
a work piece in said work holder, cam means for
actuating said tool feeding devices, non-revers
ing transmission mechanism operable by the
means for rotating said work holder to actuate 55
said cam means‘ for feeding motion of said de
vices, and means for imposing more rapid rota
machining cycle, immediately commencing my
tion upon said transmission mechanism. for actu
ating said tool feeding devices‘ in rapid, traverse
rapid traverse of the tools to the work,
motion.
, _
Means are provided for manually actuating
the tool carriages in... either direction when, for
‘
'
60.
3. In a lathe, a rotatable work holder, means '
for-rotating said work holder, tool feeding de
instance, the cutting tools are being set or re
vices operable to feed cutting tools to and from a
placed after sharpening. The end of the shaft work piece in said work holder, cam means for
12 extending beyond the gear 96 has a squared actuating said tool feeding devices, non-reversing
end portion 209 to which may be applied the transmission mechanism operable by the means
usual crank handle 2|0 for easy manual rota
.for rotating said work holder to actuate said cam
tion of the shaft 12 and, through the feed mecha- ' means for feeding ‘motion of said devices, means
nism, movement of the tool carriages. The for imposing more rapid rotation upon said trans- .
shaft 12 may be rotated in normal feeding or . mission mechanism for actuating said tool feed
rapid traverse direction at any time by said han
ing devices in rapid traverse motion, and means
dle asvthe over-runningclutch 'il automatically
disconnects the ‘shaft 12 from the shaft 63 as
described when shaft 12 is so rotated. However,
should it be desired to rotate the shaft ‘I2 manu
for automatically disengaging said transmission
mechanism from. the means for rotating said
work holder when said transmission mechanism
is being more rapidly rotated.
75
7
2,124,347
4. In a lathe, a rotatable work holder, means
for rotating said work holder, tool feeding de
vices operable to feed cutting tools to and from
a work piece in said work holder, cam means
' for actuating'said tool feeding devices, non-re
versing transmission mechanism operable by the
means for rotating said work holder to'actuate
said cam means for feeding motion of said de
vices, manual means for rotating said trans
10 mission means in either direction, means for
automatically
disengaging
said transmission
lathe, means for reciprocating said cam plate by
said rotary'cam means, and cam means mounted
on said tool slides actuated by said cam plate.
8. In a lathe, a rotatable work holder, tool
feeding devices operable to and from a work
piece in said work holder, a constantly operating
source of power for rotating said work holder
and operating said tool feeding devices at feeding
speeds, a source of power independent of said first
mentioned source of power for operating said tool 10
feeding devices at rapid traverse speeds, mechani- ,
mechanism from the means for rotating said cally operated electrical control means operablev
work holder when said transmission is rotated , by the movement of said tool feeding devices for
manually in forward direction, and manual
15 means for disengaging said transmission mecha
nism from said means for rotatingsaid work
holder, when 'said transmission mechanism is
manually rotated in reverse direction.
.
5. In a lathe, a rotatable work holder, means
20
for rotating ‘said work holder, tool feeding de
rendering said source of powerfor operating said»
tool feeding devices'at rapid traverse speeds ef-
15
fective or ineffective.
9. In a‘ lathe, a rotatable work holder, tool
feeding devices operable to and from a work piece
in said work holder, a‘constantly operating source
of power for rotating said work holder and op
20
erating said tool feeding devices at feeding speeds,
manually operable electrical-control means for
vices operable to feed cutting tools to and from
a work piece in said work holder, non-reversing
transmission mechanism actuated by the means
for rotating said work holder to actuate said cam
25 means for feeding motion of said devices, means
for imposing more rapid rotation upon said trans
rendering said source of power operative or in
operative, a source of power independent of said
?rst mentioned source of power for operating said 25
_ mission mechanism for actuating said tool feed
mechanically operated electrical control means ‘
ing devices in rapid traverse motion, means for
applying manual rotation to said transmission
'30 mechanism, and means to render said means for
imposing more rapid rotation upon said trans
mission mechanism ineffective when said means
for manual rotation is applied to said trans
mission mechanism.
as
6. In a lathe, a rotatable work holder for
supporting and rotating a work piece inter
mediate its ends, means for supporting the ends
,of’said work piece, means for rotating or arrest
ing rotation of said work holder comprising a
40 source of power for rotating said- work holder
and a combined clutch and brake mechanism for
rendering said source of power effective or inef
fective, tool feeding devices operable each side of
said work holder and work piece supported there
45 in, cam means for actuating said tool feeding de
vices, means for ‘actuating said cam means for
moving said tool-feeding devices at feedin'g speeds
comprising a shaft driven by saidmeans for ro
tating said work holder and a pluralityof cam
shafts driven by said ?rst mentioned shaft for
50
actuating said cams,‘ and means for moving said
tool feeding devices at rapid traverse speeds com
prising a source of power, independent of the
source of power for rotating said‘ work holder,
55 connected to and adapted to rotate said ?rst
mentioned shaft at a more rapid rate than said
shaft is rotated by said means for rotating said
work holder, and means for automatically disen
gaging said‘?rst mentioned shaft from said means
60 for rotating said work holder when said source of
tool feeding devices at rapid traverse speeds,
operable by the movement of said tool feeding
devices for rendering said source of power for op
erating said tool feeding devices at rapid traverse 30
speeds effective or ineffective, and manually op
erable means for rendering said mechanically
. operated electrical. control means effective or in
effective.
I
10. In a lathe, a rotatable-work holder, tool 35
feeding devices operable to and from a work
piece in said work holder, a constantly operating
source of power for rotating said work holder
and operating said tool feeding devices at feeding
speeds,‘ transmission mechanism connecting said 40
constantly operating source of power to said work
holder, and tool feeding devices, a manually op
erated engageable and releasable connection be
tween said source of power and said transmission
mechanism, a source of power independent of said 45
?rst mentioned source of power for operating said
tool feeding devices at rapid traverse speeds, and,
electrical control means operated by the opera
tion of the engageable and releasable connection
and the movement of said tool feeding devices to 50
render said last mentioned source of power effec
tive or ineffective.
'
11‘; In a lathe, a rotatable work holder, tool
feeding devices operable to and from a work piece
in said work holder, a constantly operating source 55
of power for ,rotating said work holder and op
erating said tool feeding‘devices at feeding speeds, .
means for connecting or disconnecting said source
of power'from said work holder and tool feed
ing devices, a source of power independent of 60
said ?rst mentioned source of power for operat
ing said tool feeding devices at rapid traverse
rapid traverse speeds is operating and for auto
matically re-engaging said shaft with said means
for rotating said work holder when said source of , speeds, means operable by the movement of said
rapid traverse speeds is rendered inoperative.
tool feeding devices to render said last mentioned
v'7. In a lathe, a bed, a carriage longitudinally source of power operative to rapid traverse said 65
reciprocatable on said bed, a rotary cam mounted
tool feeding devices toward said work piece,
on said bed, means on said carriage to engage saidv means operableby the movement of said tool
cam whereby said carriage may be longitudinally I feeding devices to render said'last mentioned
reciprocated by rotation of said cam, tool slides
70 reciprocatably' mounted ‘on said carriage ‘for
source of power operative‘ to rapid traverse said
'tool feeding devices from said work piece, and 70
movement to and from the center line, of said ‘ means actuated by the operation of said conn‘ect
lathe, and means operatedby said cam ‘means for ing and disconnecting means to alternately render
reciprocating said tool slides comprising a cam one or the other of said last mentioned means ef
plate reciprocatablys'mounted‘on said carriage for
75 longitudinal movement relative to the bed of the
fective.
,
~
‘
.
12. In a, lathe, a rotatable work holder, tool
8
2,124,347
. feeding devices operable to and from a work
piece in said work holder, a constantly operating
source of power for rotating said work holder
and operating said tool feeding devices at feed
mounted on said bed, means for rotating said
work holder, tool feeding devices pivotally mount- _
ed on said bed adapted to move cutting tools in
arcuate paths relative to a work piece in said
work holder,-peripheral cams rotatably mounted
on said bed, means onv said tool feeding devices
to engage the periphery of said cams, various
ing speeds, means for connecting or disconnect
ing said source of power to said work holder and
tool feeding devices, means for holding said con
necting vand disconnecting means in connected differently radially positioned cam surfaces
position, means operable by the movement of said . formed on the periphery of said cams for effect
10
tool feeding devices to automatically disconnect
ing various rates of feeding and dwell ‘forsald 10
said connecting and disconnecting means, in
tool feeding devices, and means for rotating said
dependent manually operable means for a‘ctu
ating said connecting and disconnecting means,
a source of power independent of said ?rst men
15 tioned source of power for operating said tool
cams.
>
I
16. In a lathe, a bed, a rotatable work holder
mounted on said bed, means for rotating said
work holder, tool feeding devices pivotally 15
feeding devices to rapid traverse speeds, means mounted on said bed adapted to move cutting
operable by the movement of said tool feeding tools in arcuate paths relative to a work piece
devices to render said last mentioned source of in said work holder, peripheral cams rotatably
power operative to rapid traverse said tool feed
mounted on said bed, means on said tool feed
20 ing devices toward said work piece, means oper
ing devices to engage the periphery of said cams, 20
able by the movement of said tool feeding de
various differently radially positioned cam sur
vices to render said last mentioned sourceof faces formed on the periphery of said cams for
power operative to rapid traverse said tool feed‘ effecting various different rates of feeding and
ing devices from said work piece, and means dwell for each of said tool feeding devices, and
actuated by the operation of said connecting and\ means fonrotating said cams.
25
disconnecting means to alternately render one
17._ In a lathe, a bed, a rotatable work holder '
or the other of said last mentioned means e?ec \mounted on said bed, means for rotating said
tive.
work holder, tool, feeding devices pivotally
13. In a lathe, a rotatable work holder, means
30
for rotating said work holder, tool feeding devices
reciprocatable relative to a work piece in said
work holder, a single cam means for longitudi
nally feeding and relieving said ‘tool feeding de
vices‘ from said work piece, and non-reversing
means for rendering said cam means effective.
14. In a lathe, a rotatable work holder, means
for rotating said work holder, tool feeding devices
reciprocatable relative to a work piece in said
work holder, means for longitudinally feeding
‘ and relieving said tool feeding devices from said
work piece comprising, a cam drum, cam means
on said cam drum, and non reversing means for
rotating said cam drum.
-
15. In a lathe, a bed, a rotatable work holder
mounted on‘said bed adapted to move cutting
tools in arcuate paths relative to a work piece in 30
said work holder, peripheral cams rotatably
mounted on‘ said bed, means on said tool feed
ing devices to engage the periphery of said
cams, various radially positioned cam surfaces
‘formed on the periphery of said cams for effect
ing various rates of feeding and dwell for said
tool feeding devices, means for rotating said
cams at relatively slow speed to cause said feed
ing and dwell, and means for rapidly rotating
said cams to effect ‘a rapid traverse of said tool '
feeding devices.
'
,
WILLIAM F. GROENE.
ROSS M. BACON.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 954 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа