close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2405522

код для вставки
fhg. s, 1946.
’
QH. SCHURR'
-
f 2,405,522
MACHINE TOOL
Filed April l. 1942
»
7 Sheets-Sheet -1
l
E.
Hfs ATTQHNEYS.
A|l8~ 5, 1946-
l
i
c. H. scHuRR
MACHINE' TOOL
1
2,405,522
`
Filed `April l, 1942
t
'7.Sheets-Sheet 2
Fis. 5
ÍNVEÑTOR:
am.,
Hfs ArronNsvs.
Aug» 6» 1946. v
_
c. H. scHuRR
~2’405’5j22
MACHINE TOOL
Filed April 1, 1942
'
7 sheets-sheet :s
F76. 3
@Vm/¿M+
-H/s ATTORNEYS.
c. H. sca-MRR
‘
MACHINE
.
2,405,52
TOOL
ì
Filed April 1, 1942
'1 sheets-shew 4 `
(O
T4
à* @mam
Aug. 6,> '1946.
c. H. scHuRR
- 2,405,522
MACHINE 'TOOL
Filed April l. 1942
'__ __
'7 sheen-sheet 5
¿.....__
r
£75.12
¿if
3%@ 60%.?
@MS
.ì
n
70E/VE,”
CALH. SCHURR
MACHINE TOOL I
FilÀed April l, 1942
.HA/S
'7 Sheets-Sheet 6
A TTOENEYS
Patented Aug. 6, `1946
2,405,522Í
UNITED STATES lTE'E‘ OFFIC
2,405,522
MACHINE TOOL
Charles H. Schurr, Cleveland, Ohio, assigner ’to
The Lees-Bradner Company, Cleveland, Ohio, ,
a corporation of Ohio
Application April 1, 1942, Serial No. 437,112
17 Claims.
1
This invention relates to a machine tool, and
particularly to a tool which is adapted to the
accurate forming of surfaces .on metal and like
materials.
An object of the invention is to provide an
improved machine tool -which will form non-cy
lindrical surfaces with extreme accuracy.
Another object is to provide an improved ma
chine tool which will be of simple and rugged
construction.
Another object is to provide an improved ma
chine tool which will require relatively few mov
ing parts.
Another object is to provide an improved ma
chine tool which will have extremely little back
lash or looseness.
Another object isto provide .an improved ma
chine tool which will occupy relatively small iioorl
,i
space.
Another object is to provide an improved 1na~
chine> tool which will ybe neat and compact.
Another object is to provide an improved ma
chine tool which may be easily operated.
Another object is to provide an improved ma-
chine tool which may be quickly and easily ad
justed to accommodate itself to performing differ
ent operations.
Another object is to provide an improved ma
chine tool which maybe readily and economically
manufactured.
Another object is to provide an improved ma
chine tool which shall be both quick and eiilcient
in its operation.
i
(Cl. 90--11.62)
2
scale than `that to which the parts are shown in
the preceding ?lgures;
Figure 8 lis an enlarged fragmentary cross sec
tional view of the automatic feeding device taken
on the line VIII-VIII of Figure 4;
Figure 9 is a fragmentary sectional view taken
on the line IX-IX'of Figure 3;
Figure 10 is a fragmentary sectional view taken
on the line X-X of Figure 3;
Figure 11 is a diagrammatic view of the various
driving connections ofthe apparatus of the pre
ceding figures; and
Figure 12 is a diagrammatic illustration of the `
electric circuits involved.
Figure 13 'is a View partly in plan and partly in
section, taken on the line XIII-XIII of Figure
1; and
Figure 14 is an elevational View, partly in sec
tion, taken on the line XIV-XIV of Figure 13.
20 In Figure 1, the machine is >shown as having a
supporting base or pedestal I, this conveniently
being,as shown, a hollow casting opening toward
its bottom and having -spaced top walls 2 and 3
.
and transverse webs‘or walls 4, 5, 5, 1 and 8, and
25 front and 'back walls 9 and I0.
‘Upon the upper surfaces of the top walls 2
and y3y -are formed, integrally therewith, longitu
dinally extending Ways I I and I2.
Extending along the front, rear, vand one end
30 of the base is a trough I3, formed integrally there
with, whichfopens into a central depressed space
between walls 6 and 1, these walls being provided
with horizontal lianges I4 and l5 upon which a
Other objects will hereinafter appear.
rectangular container IB is supported for the re
The invention will be better understood from 35 ception of chips, this container being movable like
the description of one practical embodiment
thereof, illustrated in the accompanying draw
ings, in lwhich:
Figure 1 is a front elevational view of a ma
a drawer into and out of the space between'the
walls 6 and 'I for convenience in 'removal of the
chips.
Mounted upon the ways II and I2 are a work
chine tool, the type chosen for illustration being 40 head and a cutter head.
that commonly called a thread milling machine,
The latter is shown to the right in Figures 1
embodying the invention, parts of the base being
and 4, and consists of a supporting bracket in
broken away;
dicated generally at I'Iprovided with bearings I8
Figure 2 is a transverse fragmentary sectional
and I9 in which is supported, with its axis gen
View taken on the line II-II of Figuij’e 1;
45 erally parallel to the ways, a tool spindle 20.
Figure 3 is apartially elevational and partially
The end .of the tool spindle projects at 2| be
transverse view taken on the line'III-III of Fig
' yond the end 0f the base and is provided with a
ure 1;
'
pulley 22 keyed to it and -held upon the tapered
Figure 4 isa longitudinal _sectional view taken
end 2| of the spindle as by a nut 213, this pulley
on the line IV-IV of Figure 3;
50 being shown as grooved for the use of a double
Figure 5 is a iragmentaryisectional View taken
V-belt 24.
on the line V-V of Figure 3; '
The belt is driven from a pulley 25 fixed to the
Figure 6 is a fragmentary sectional view taken
shaft
of a motor 26 located within the space in
on the line VI-VI of Figure 3.;
`
the base'deñned by walls 'l and 8,'top >3, and be
Figure 'l is a plan View of a machinel to 'a smaller 65 tween fr'ont 9 and back 1U.
2,405,522
3
The pulleys and belt are protected by a cover
21 secured to the base and the work head by
screws 21a. The spaces between the spindle and
head are covered by rings 28, 29 and 38, which
retain lubricant in the bearings, and prevent theentry of chips, dirt, and the like.
Journalled in the cutter head is a transverse
4
12 in axial alignment therewith and provided with
a skew gear 13.
The clutch member 88 may be moved in either
direction by a yoke 14 carried by a vertical shaft
15 which extends upwardly through the top of
the frame and is provided on its outer end with
a hand lever 16.
On the rear part of the frame is hinged at 11
a bracket 18 carrying a motor 19, the shaft oi
wheel 32 and having keyed to it a skew gear 3 .
0 which is provided with a pulley 88 over which pass
This meshes with a skew gear 34 keyed to a
V-belts 8l to a pulley 82 fixed to a longitudinally
lead screw 35 which extends lengthwise of the _
extending shaft 83.
machine to substantially the remote (or left
This shaft has secured to it a skew gear 84
hand) end of the bed. The lead screw is pre
meshing with skew gear 13, and at its outer end
vented from axial movement by thrust bear~
detachably connected to it one of a series of
ings 38.
,
'
>
change gears 85 which drives, through an idler
The work head is shown to the left in Figures , gear 86, another change gear 81 detachably se
l and 4, and includes a carriage 31 slidable upon
cured to the shaft 88 which in turn has formed
ways Il and l2.v The carriage has’a depending
upon it a worm 89, the latter meshing with worm
boss 38 in which is secured a nut 39, engaging the
wheel 10.
'j
threads 48 of the leadÍscrew 35, by which the 20
Thus, it will be apparent that the work spindle
carriage may be moved upon its ways.
may be driven at either of two speeds, controlled
A locking screw and handle 4| are provided
by the position of lever 18.
for clamping the carriage at any desired adjusted
If the jaw clutch 89 is engaged, the drive is
shaft 3l provided on itsI outer end‘with a hand
from motor 19 through pulley 88, belts 8|, pulley
The upper surface of the carriage is formed 25 ' 82, shaft 83, change gears 85, 88, and 81 to shaft
42
and
43,
upon
which
is
‘
with transverse-,ways
88, thence through worm 89 to worm wheel 1E]
position.
,
,
K
slidably mounted a'transversely movable slide 44
having a'flat upper surface provided with a cen~
which is now clutched to the shaft 63 and so in
turn drives the worm 62, rotating the gear 80 and
tral circular depression 45.
with it the spindle at a speed suitable for cut
The lower surface of the slide has a depending 30 ting.
boss 48; movable in the space between the ways 42
As the spindle rotates, the threaded ring 58,
and> 43, provided with a nut 41 engaging the
traveling upon the ’fixed shoe 58 moves the spindle
threads of a screw 48 for moving the- slide upon
axially by an amount determined by the lead of
the carriage,
35 the threads of parts 58 and 58. If a different
L'I'he operation of this screw will be described
more fully hereinafter.
K
`
'
Upon the upper surface of the slide is a frame
49 having a circular plate 5i) attached to it, this
vfitting closely within the recess 45 so that the
axial feed is desired, these two parts may be read
ily replaced by others having the proper lead.
If, however, the lever 16 is moved in the oppo
site direction, it disengages jaw clutch t9~ and
engages friction clutch 1I. Now power is trans
frame Ymay be angularly adjusted with respect to 40 mitted from shaft 83 through skew gears 84 and
Vthe slide. This adjustment is permitted by ma
13 to shaft 12, through clutch 1l to shaft 53, and
chine screws 51 threaded into the slide and ex
tending through arcuate slots in the lower portion
it will be apparent that the latter now is driven at
a substantially higher rate of speed than when
of the frame 49.
the jaw clutch is engaged.
The frame carries spaced bearings 52 and 53A, 45 It also is driven preferably in a reverse direc
in which is rotatably and slidably mounted a hol
tion, thus providing a quick return, moving the
low work spindle 54. This spindle on .its end
spindle to its initial position.
adjacent the cutter head has an outwardly ex
In practice, a spring is provided for rotating
tending iiange 55 which limit-s its axial motion
shaft
15 in the direction to engage the jaw clutch
5.0
elements 89, so that the operator may move the
inone direction.
At the other end the work spindle has keyed
lever into position to engage the friction clutch
to it a removable externally threaded ring 55 held
1|, and, when the return motion has been com
in place by an internally threaded ring or nut 51.
pleted, merely releases the lever, whereupon the
Theexternal thread of ring 58 is engaged by
spring will cause the engagement of the jaw clutch
a conjugate thread cut into a segmental shoe 58' 55 elements 89, so that he need not hold these ele
detachably secured to the frame by screws 59.
ments engaged while the cutis being performed.
Also keyed to the exterior ofthe spindle 54 is
A brake 98 is provided on a shaft 83, this being
a gear 88, held in place by an internally threaded
electrically controlled to stop the parts, as will be
ring or nut'8l, which gear meshes with a worm
.
82 formed integrally with a transversely extend 60 more fully described hereinafter.
The forward end of screw 48 is journalled in
ing shaft'53.
the carriage 31 as indicated at 9|, the screw hav
This shaft is supported at its forward end in
ing a shoulder which abuts the journal and so
bearings 54 carried by the frame, the end of the
shaft projecting through a cap 85 and being 65 limits its outward movement.
Beyond the journal the screw shankA is sur»
squared, as indicated at t5,> for the application of
roundedby a compression spring 92 bearing at
a wrench or the like in effecting adjustments.
one end against a collar 93 secured to screw 48
Shaft 83 is journalled at 51 within the frame
and has splined to it a clutch member 68. This
clutch member is provided on one end with a jaw
clutch element 69 engageable with ’a correspond
ing jaw element fixed to a skew gear 18.
AThe other end of clutch member 68 is arranged
to cooperate'with a disc friction clutchfil,> by
which the shaft 83 may beconnected with a shaft
and at its` other end against a flange 94 formed
within a sleeve 95, the other» side of this flange
bearing upon a thrust bearing 95, which, in turn,
abuts the journal 9i.'
The outer end of the screw is squared as indi
cated at 91 for the reception> of a hand wheel,
crank,` or the like, byfwhich thescrew may be
2,405,55221'
5
rotated ~for adjustments, or, if desired, »to impart
a »manual feed.
Y
'
,
,
A depending -boss 9’8`is formed integr-allyA with
the sleeve 95 and enters a groove in a cam 99.
6
load circuit breaker |53, to the coil |54 -con-`
trolling the magnetic switch |31, the circuit con
tinuing through conductor | 55, a second thermal
overload switch I 56, and a conductor |51, back
The cam is secured to a short vertical shaft H38
which is pivoted` in a casing I?I secured to the
tothe end of line |36.
front of the carriage.
l
_Fixed -to the cam is a worm wheel |92 mesh- `
button It@ is depressed to'complete the circuit,
current flows through switch M9, conductor 15H3,
y
ri‘hus, it will be seen that when starting push
ing with the worm |63 upon a shaft | 6d.
push button I 5| , thermal overload circuit breaker
To the outer end of the shaft is attached a l0 |53, solenoid |5fi, conductor |55, thermal >over
change gear I |35' meshing with a change gear
|66 detachably íixed to a short horizontal shaft
|01, the inner end of which is provided with a
worm wheel |68 driven by the worm |09 formed
in the shaft ||ï| of a motor I||.
'
Fixed to the other end of the motor shaft is a
brake I I2.
v
The functioning of these parts will more fully
appear from the description of the operation of
the machine.
-
It will be noted that the motor 2% is mounted
upon -a plate H3, pivoted at |||i within the base,
and having supporting screws H5 threaded
through its free end, whereby the amount of
weight imposedupon belts 2d may be adjusted to
load switch iäß, conductor |51, back to the main
line conductor |3ë, closing the contacts of the
magnetic switch |31, and energizing conductors
|38, i3@ and Mil to operate motor 26. The clos
15 ing of the magnetic switch also connects line
Hill with conductor |52 in parallel with start
button M9 and acting as a hold in when the
butto-n is released.V
When it is desired to stop the motor 26, the
push button |5| may be actuated, breaking the
circuit and discontinuing the currrent to the coil
i5@ and so permitting switch |51 to» open.
Connected to the opposite Contact of switch
|5| from conductor |52 is a conductor |53, one
end of which is connected. to switch |22. It is
maintain these belts at any desired tension.
provided with a branch conductor |59 having its
The recess between walls 6 and 1 terminates at
end connected to switch |25 and having another
a nearly horizontal bottom wall IIS which per
branch conductor me connected to switch |33.
mits coolant lluid to iiow down into a sump ||l
It will be noted that conductor |53 may b-e
formed in the rear of the base.
30 energized by closing the starting switch MQ and
A cam |20 is i'lxed to Shaft 15, and two switches
is de~energized simultaneously with coil i’öéi by
|2| and |22 are arranged to be valternately actu
the opening of switch 55|, so that the start and
ated by this cam as the lever 16 is moved from
stop switches control all the circuits supplied by
one side to the other.
current through conductor |58.
The external surface of cam 99 is formed into
From the other terminal of switch |22, a con
an additional cam surface contacting the Vend of
ductor |e| extends to one terminal switch |32,
a horizontal rod |23 provided with two adjustable
and from another contact of this latter switch a
conical collars |2¢| and |25 which are respectively
conductor |62 is connected to a conductor |63
arranged to actuate switches |25 and |21 in ac
having one end connected to a terminal of switch
cordance with the rotation of cam 99.
40 |2| and its other end connected to a terminal
A forked follower I28'embraces the gear Sii, this
switch |21.
follower being ñxed to a rod |29 provided with
From the third terminal of switch |32 a con
two conical collars |36 and ISI, thesebeing posi
ductor Hill extends, being attached to a con
tioned to `actuate switches |32 and |33, respec
ductor |55, one end of which
connected to the
tively.
other terminal of switch itl', and the other end
Thus, it will be seen that the switches |2I and
of Ywhich passes through a thermal overload
|22 are controlled by the position of the lever 1d;
switch |56, the coil |i¥1 of a magnetic switch |58,
|26 and |21 are controlled by the position of
a thermal overload switch |69, and a conductor
cam 99, and, consequently, in accordance with
|10, which is` connected to one end of line IÃ1|,
the position of the slide upon the carriage and
the other end of which is connected to line |35.
switches |32 and |33 are controlled by the axial
Lines |12 and |13 connect, respectively, lines
movement of the spindle in its bearings.
|35 and |34 with the magnetic switch |65, and
The switches and motor are connected as indi
through the magnetic switch to conductors Hd,
cated in Figure 12.
’
|15 and |15 connected to the motor |||. Branch
Current is supplied from a power line or gener 55 conductors |11 and |13 connected, respectively,
ator through conductors |34, |35 and |36, pass
to conductors |1|| and |16, extend to the ends of
ing through a magnetic switch |31 to conductors
the coil |19 of the magnetic brake H2.
I 38, |39 and läd, which connect, through a manu
A conductor lâ@ connects the second end of
ally operable reversing switch indicated generally
switch |2$ with line H53.
'
at I4I, with conductors M2, |43 and IM, respec 60
A conductor I 8| connects the second contact
tively, connected to the motor 26.
of switch |2| with the second contact of switch
Also connected to the switch |31 are conduc
tors |45, IME and |41 connected to motor H9,
so that whenever the magnetic switch |31 is
|33.
l
A conductor |82 extends from a third contact
of switch |2| to a thermal overload relay |83,
closed the motor HS operates, supplying coolant 65 thence to the coil |86 of a magnetic switch |85,
to the cutter.
a second thermal relay iii, anda conductor |81
Connected to one terminal or" line |315 is a con
connected with one terminal of line ißt, the
ductor |63 which extends to a normally open
other end of which is connected to line i3d.l
starting push button M9, the other side of this
Lines |89 and No connect, respectively, lines
button being connected by a conductor |53 to a 70 |35 and |34 with the magnetic switch iß’â, `while
contact of a normally closed stopping push but
lines |9I, |92 and ISS connect the corresponding
ton |5I, and from this same contact of the sec
ond push button a conductor |52 passes to the
terminals of this switch through a manual re
versing switch |94 to the terminals of motor 19.
switch |31. From the other side of stop button
Branch conductors |95 and |95 connected, re
-I'5I current may pass through a thermal over 75 spectively, to conductors -|9| and |93, are con#
2,405,522
brake 96.
8
.The release Of 'the lever, of- course' opens
switch |22 but this does not effect the operation,
inasmuch as the circuit controlled thereby has
nected to the ends of> the coil |91 of magnetic
Y
` Thus, it will be apparent that current is sup
been broken at switch |32.
plied to motors 19 and ||| only after the actu
ation of the starting switch |49, and that such
current is discontinued by the actuation of the
Y
The actuation of switch |32 has now es
tablished a circuit between conductors |62A and
|64, thence through conductor |65 to coil |61 of
magnetic switch |68, again closing this switch .
It will also be apparent that coils |19 and |91
and energizing motor || | to feed the cutter in to
are energized to retain their respective brakes
||2 and 96 in inoperative position only while the 10 depth, this motion, of course, being likewise im
parted to the cam 89 and moving abutments |24
motors 19 and ||| are operating.
and |25 .to the right, as seen in Figure 12. At
The operation of the device is as follows: The
the extreme position of these abutments, they
operator presses the start push button |49 which
open switch |26 and close switch |21.
permits current to flow through the magnet |54
The opening of switch |26 breaks .the circuit
of switch |31, closing this switch and supplying 15
between conductors |59 and |63, .discontinuing
current to motors 26 and ||9.
the current to both coils |61 and |84, and stop
It simultaneously supplies current to line |58.
ping both motors ||| and 19, at which time the
After inserting a piece of work in the chuck
parts have progressed to their positions at- the
|98 and clamping it by rotating hand wheel |99,
the operator moves lever 16 to his left, closing 20 iinish of the cut, and it is time for the operator
switch |22 and permitting switch i2| to establish v to replace the work piece with a fresh one.
It will :be noted‘that neither of .the feed motors
a connection between conductors |8| and |82.
19 and | | | can be operated until the cutter motor
At this point of the operation, switch |33 is
26 has been started, thus insuring that the oper
closed, so that current may flow through con
ductors |59 and |66, switch |33, conductor |8i, 25 ator will not start the piece ñrst and force the
cutter and work into each other beforethe cutter
switch |2| and conductor |82 to energize the
is rotated.
coil |84 of magnetic switch |85, starting the ino
While I have described the illustrated embodi
tor 19.
ment of my invention in some particularity, ob
Simultaneously, current passes through switch
|22 and thence through conductor |6| to switch 30 viously many others will readily occur to those
skilled in this art, and I do not, therefore, limit
|32, then through conductors |62 and |63 to
myself to the precise details shown and described,
switch |21 and through this switch to conductor
but claim as my invention all embodiments, var
|65 connected to coil |61 of magnetic switch
iations, and modifications thereof coming within
|68, closing this switch t0- energize motor |||
which retracts the cutter from depth so that it 35 the scope of the appended claims. ~
I claim:
Y
Y
will clear the work during its return to its start
1. A machine tool comprising a tool holder, a
ing position.
rotatable work spindle, means for rotating said
As the motor | | | rotates to retract the cutter,
spindle, the tool holder and spindle being rela
cam 99 rotates, moving rod |23 to the left, as
stopping switch |5|.-
_
seen in Figure 12, so that when the cutter is 4.1' tively adjustable axially, radially, and angularly,
an externally threaded ring detachably secured
fully retracted the cam will cause contact |25 to
to the spindle, a segment having a thread con
open switch |21 and contact |24 to close switch
|26.
The opening of switch |21 breaks the circuit
between conductors |63 and |65 and stops the
motor |||.
'
Motor 19 continuesV to operate, moving the
spindle to the left and carrying with it contacts
|38 and |3|.
jugate to the thread on said ring, and detachable
securing means fixing said segment relative the
tool holder, the threads of the segment and ring
being in engagement.
2. A machine tool comprising two independ
ently rotatable spindles, driving means connect
ed to one of said spindles, separate driving means
When the spindle has reached its extreme po 50 connected to the other spindle, feed means ca
pable of relatively moving the spindles actuated
sition, these contacts will have moved switch |32
to-establish the circuit between conductors |62
and |64, and have reopened switch |33, thus
breaking the circuit between conductors |66 and
|8| and discontinuing current through the lat
ter to switch | 2|, conductor |82, and coil |84 of
magnetic switch |85, thus causing this magnetic
by said second driving means, disengageable posi
tive power transmission mechanism between the
second mentioned driving means and the second
mentioned spindle, a second disengageable power
transmissionmechanism capable of transmitting
motion at a dinerent rate of speed between the
second mentioned driving means and the second
mentioned spindle, and means for selectively al
switch to open and stop motor 19.
The operator then releases lever 16, and its
spring swings this lever to his right. This mo 60 ternately engaging said power transmission
mechanisms.
tion opens switch |22 and establishes .the circuit
3. A machine tool comprising two independ
between conductors |63 and |82.
ently rotatable spindles, driving means connected
Current now ñows through conductor |59,
to one of said spindles, separate driving means
switch |26, conductor |80, conductor |63, switch
|2|, and conductor |82 to coil |84 of magnetic 65 connected to the other spindle, feed means ca
switch |85, again closing this switch and causing
the motor 19 again to operate.
The operator’s action in releasing the lever
and the rotation of this lever and its, shaft have
caused the yoke 14 to disengage the quick return
clutch 1| and lto engage the cutting clutch 69,
so that the spindle is now driven in the opposite
or cutting direction and 'at a lower rate of speed
than was the case when the lever was retained
by the operator to his left.
pable of relatively moving the spindles actuated
by said second driving means, disengageable pos
itive power transmission mechanism between the
second mentioned driving means and the second
mentioned spindle, a second disengageable power
transmission mechanism capable of transmitting
motion at a different rate of speed between the
second mentioned driving means and the second
mentioned spindle, and means for selectively a1
75 ternately engaging said power .transmission
2,405,522
i9
10
mechanisms, a second` feed means capable of
moving the spindles relatively'in a different di
means for driving said spindles, a feeding element
rection, and means controlling said second men
tioned feed means in accordance with the opera
tion of said power transmission mechanisms.
responding feeding element in engagement there
with and fixed with respect to said bearings,
4; A'machine tool, comprising a rotatable spin
dle, driving means therefor, two power transmit
ting mechanisms between said driving means and
said spindle arranged to rotate the spindle at
different speeds relative to that of the driving
means, clutch means for selective alternate en
gaging either of said transmissionV mechanisms,
feed means actuated in accordance with the ro
tation of the spindle, a second feed means, inter
carried by said second mentioned spindle, a cor
means for moving the slide on the carriage, and
means for moving the carriage on the base.
9. A machine tool comprising a rotatable and
axially translatable spindle, driving means there
for, power transmission mechanism interposed
between the driving means and the spindle com
prising two gear trains, a jaw clutch between one
lof said gear trains and the spindle, and a friction
clutch between the Aother gear train and the
spindle.
‘
,
connections between said clutch means and said 15
lo. A machine tool comprising a rotatable and
second feed means causing the latter to operate
axially translatable spindle, driving means there
in vpredetermined relation to the operation of the
for, power transmission mechanism interposed
power transmitting mechanisms.
between the driving means and the spindle com
5. A machine tool comprising two spindles, a
prising two gear trains, a jaw clutch between one
motor arranged to drive one of said spindles, a 20 of said gear trains and the spindle, a friction
second motor arranged to drive the other of said
clutch between the other gear train and the spin
spindles, two power transmission mechanisms in
dle, and common control means for said clutches
terposed between said last mentioned motor and
permitting engagement of only one at a time.
spindle capable of driving the spindle at different
l1. A machine tool comprising a rotatable and
speeds relative the speed of its motor, clutch 25 axially translatable spindle, driving means there
means for selectively engaging either of said pow
for, power transmission mechanism interposed
between the driving means and the spindle com
prising two gear trains, a jaw clutch between one
the third motor actuated in accordance with the
of said gear trains and the spindle, a friction
clutch means, and control means fo-r the sec 30 clutch between the other gear train and the spin
er transmission mechanisms, a feed means, a
third motor connected thereto, control means for
ond and third motors actuated in accordance with
the operation of the first mentioned motor.
6. A machine tool comprising two spindles, a
motor arranged to drive one of said spindles, a
second motor arranged to drive the other of said
spindles, two power transmission mechanisms in
terposed between said last mentioned motor and
dle, threaded means carried by the spindle, and
stationary threaded means in engagement there
with.
»
l2. A machine tool comprising a rotatable and
axially movable spindle, a threaded element car-`
ried by the said spindle, a stationary threaded ele
ment in engagement therewith, a gear fixed to the
spindle capable of driving the spindle at different
spindle, a worm in engagement with the gear, and
speeds relative the speed of its motor, clutch
driving means for rotating said worm, a clutch
means for selectively engaging either of said pow 40 between the worm and the driving means, and
ing in accordance with the rotation of said sec
manual means for rotating the worm.
13. A machine tool comprising a base, a slide
ond mentioned spindle, control means actuated
movably supported thereby, a screw for moving
by .said feed means, said control means control
the slide upon the base having a threaded por
' er transmission mechanisms, feed means operat
ling the second mentioned motor, a second feed 45 tion engaging a threaded element fixed to the
slide, a bearing stationary with respect to the base
means, a third motor> connected thereto, control
means for the third motor actuated in accordance
supporting the screw, a thrust bearing between
with the clutch means, and control means for the
the screw and stationary bearing, a second thrust
second and third motors actuated in accordance
bearing on the opposite side of the stationary
50 bearing, a sleeve Ibearing upon said last men
with the operation of the ñrst mentioned motor.
'î'. A machine tool comprising a base, stationary
tioned thrust bearing and surrounding a portion
bearings carried thereby, a spindle rotatably sup
of the screw, a collar fixed to the screw within
ported by said bearings, ways upon the base ex
the sleeve, a compression spring interposed be
tending in the direction of the axis of the spindle,
tween the collar and sleeve, automatic means for
a carriage slidable upon said ways,
slide 55 moving the sleeve, and manual means for rotating
mounted on the carriage and movable in 'a direc
the screw within the sleeve.
tion transverse to said ways, bearings carried by
14. A machine tool comprising a base, a slide
the slide, a spindle rotatably and slidably’ï-carried
movably supported thereby, a screw for moving
by said bearings, means for driving said spindles,
the slide upon the base having a threaded por
a feeding element carried by said second men
tioned spindle, a corresponding feeding element
in engagement therewith and fixed with` respect
60 tion engaging a threaded element fixed to the
slide, a bearing stationary with respect to the base
supporting the screw, a thrust bearing between
>to said bearings, means for moving the slide on the ,
the screw and stationary bearing, a second thrust
carriage, and means for moving the carriage on
bearing on the opposite side of the stationary
the base.
_,
65 bea `ing, a sleeve bearing upon said last mentioned
8. A machine tool comprising a base, stationary
thrust bearing and surrounding a portion of the
bearings carried thereby, a spindle rotatably sup
screw, a collar fixed to the screw within the sleeve,
ported by said bearings, ways upon the Ibase ex
a compression spring interposed between the
tending in the direction of the axis of the spindle,
collar and sleeve, a cam connected to move said
a carriage slidable upon said ways, a slide 70 sleeve, and manual means for moving the screw
mounted on the carriage and movable in a direc
within the sleeve.
tion transverse to said ways, bearings carried by
l5. A machine tool comprising a rotatable work
the slide and angularly adjustable with respect
spindle, a tool holder, driving means for rotat
to the motions of the carriage and slide, a spindle
rotatably and slidably carried by said bearings,
ing the spindle about its axis, feed means actu
ated by the rotation of said spindle for movingy
2,405,1522
11
the spindle and holder relatively in the direction
of the axis of the spindle in two opposite direc
tions, and independent feed means for moving the
spindle and holder relatively in a direction trans
verse to the spindle axis.
_
16. A machine tool comprising two rotatable
spindles, driving means connected to one of said
12
17, A machine toolcomprising a rigid- station
ary base, a spindle carried by said base and ro'
tatable and axially movable with respect thereto,
a threaded element detachably ñxed to said spin
dle, a second threaded element having a thread
conjugate to that of the iirst mentioned element
and in engagement therewith fixed relative to said
base, a holder carried by said base and iixed in
relation thereto, and driving means connected to
spindles, independent driving means connected
to the other said spindles, feed means actuated
by said second driving means for feeding the spin 10 said spindle, a Vrotatable spindle carried by the
holder, and driving means for said last mentioned
dle relatively in oneV direction, and control means
spindle independent of said first mentioned
permitting the second mentioned driving means
driving means.
'
to operate only while the first driving means is in
CHARLES H. SCHURR.
operation.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 362 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа