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Патент USA US2123649

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July 12, 1938.‘ pomsman sonme
I R. AND
|_. (Jun
MILLING
IIH MACHINE DRIVE
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Filed Sept. '1, 1937 ‘
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July 12,- 1938.
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R, L, GOTTA
2,123,649
COMBINED BORING AND MILLING MACHINE DRIVE
Filed Sept. 1, 1957
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July 12, 1938;
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COMBINED BORING AND-MILLING MACHINE DRIVE
Filed Sept. 1, 1957
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Patented July 12, 1938
2,123,649 }
UNITED STATES
PATENT OFF-ICE ; 3
2,123,649
COMBINED BORING.‘ AND mums
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,Ralph L. Gotta, Philadelphia, Pa; assig'llol' to
'William Sellers 8;‘ Company, Incorporated,
Philadelphia, Pa., a corporation of Pennsyl
vania
Application September‘ 1, 1937,"Serial No. 162,023.
8 Claims. (01.29-26)
‘This invention relates to machine tools, and 'struction shown in the accompanying drawings
more particularly to a drive for controlling the wherein, for the purposeof illustration, I have
several movements of the various operating parts shown a preferred embodiment of my invention
of machine tools such as horizontal boring and
milling machines. Such‘ machines usually com
prise a bed or work support ‘upon. which is mount
ed for longitudinal movement a saddle which,
in turn, bears a table mounted for transverse
movement.‘ Columns arise from opposite ends
_10 of the bed, one carrying a boring head and the
other an outboard support for the boring spindle.
The head and outboard support are vertically
shiftable upon their respective columns and the
head carries a spindle, or spindles, which must
15 be both rotated and longitudinally shifted. Since
the spindle rotation and traverse of one of the
movable elements must takeplace simultaneously,
separate driving transmissions must be provided
to take care of these operations. The transmis
and wherein:
'
‘
'
Fig. 1 is a side elevation of’a combined boring
and milling machine, embodying a drive con
structed in accordance with my invention;
Fig. 2 is a diagrammatic illustration of the
transmission mechanism’ employed; .
Fig. 3 is an enlarged sectional view through the
~unidirectional drive; and
I
Fig. 4 is a section on line 4—4v of Fig. 3.
Referring now more particularly to the draw
ings, the numeral It generally designates a base
upon which is mounted for longitudinal move
ment a saddle H and table l2.- Mounted at'
opposite ends of the base are columns i3 and it
upon which are mounted for vertical movement
a boring head l5 and an outboard support It.
sion governing the rotation of the spindle must _ The head supports a driving motor l1 and mounts
be made reversible toenable use of right or left ' a spindle, or spindles, It for both rotation and
longitudinal movement. Contained within the
hand cutters, taps or thelike, and the transmis
sion controlling the spindle feed must derive its head is a speed control transmission unit I9 driv
power from the spindle itself for, obviously, in ‘en from the motor through a reversing gearing 20
tapping, thread-cutting operations and the like and driving spindle-operating units Ito and I8?) 25
selectively connectable to the spindle by a clutch
the rotative speed of the spindle must be .accu
rately correlated to the speed at which the spin- ' I8c having'a neutral point. Likewise contained
die is fed. Furthermore, the spindle feed must in the head and driven from the unit lab is a
be reversible simultaneously with the spindle in feed control transmission 2| driving, through a
order that tools such as taps may be properly reversing gear 22, the spindle feed screw 23. The 30
withdrawn. It will be seen that if this spindle output shaft 24 ofthe feed control transmission
feed transmission is used to control the feeds of drives a‘ vertical lay shaft 25 which, as in general
the head, saddle and table each time that the constructions, is splined to permit vertical move
spindle feed is reversed or the direction of rota
ment of thehead. In the base of the machine
tion of. the spindle reversed, the direction of . a casing 26v is provided into which the lower end 35
operation of the three remaining units would be of the shaft 25 extends, and in this casingare _
.likewise reversed, with the result that control disposed a reversing gear 21 controlling rotation '
handles utilized in connecting these parts with of the screws'29 and 29 ‘which control vertical
the feed transmission‘ will be meaningless as to movement of the head and outboard- support re
position, a given position at one time causing feed spectively and a reversing gear 30 which, through
of the‘ associated unit in-one direction and at clutches 3| and 32, controls the operation of, the I
another time feed of the unit in the opposite “saddle feed screw 33 and the table drive shaft
Y
_
direction.
An important object of this invention is the
provision of a construction such that the feed
transmission controlling the feed of the'spindle
may likewise be employed‘ in operation of the
_ headftable and saddle while still enabling the
34 operating the drive nut‘35 engaging the table ,
feed screw 36. These elements in the main are
merely conventionally indicated, since they may
be ofrany usual and well-known construction.
Bevel gear 31 secured to’the lower end of lay
shaft 25 meshes with a pair of oppositely faced
use of levers the positions of which will indicate bevel gears 38, loosely mounted on a shaft 39
50 the direction of movement of the part with which _ and each provided with an overrunning clutch
they are associated.
'-
49 through which shaft 39 can be driven in ‘one
~
Another object of the invention'is the provision‘ direction only. It will be obvious that si'nce'these
of a_ construction su'chthat a single pilot wheel
may be utilized in feeding of any‘ of the spindle,
55 the head, the table or the .saddle, and when
employed in feeding the head, table or saddle
running in the predetermined unidirection with
out regard to the direction of operation of ‘the
may be operated ineither direction to provide
spindle feed from which this drive is ‘derived. ‘It .
movement of the affected part in the direction
is thus possible to utilize a _Singlej;§§?_ unit in
selected by its individual control lever. ‘
90
gears 39 are oppositely driven by gear 31, shaft
39 will be, driven from the bevel gear which is
I
These and other objects I attain by'the con
operation of the various movablegeléments of the
machine.
‘-
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00
2,128,649
It will be obvious that, since shaft 39 is uni
directional and controls the operation of the vari
ous movable elements including head I 5 and
outboard support I6, which may be considered
as a unit, the saddle II and table if, the con
‘ trol levers 42, 43 and “controlling respectively
the saddle I I, table l2, and head l5, may be so
positioned thata vmovement ‘in a, given direction
thereof will cause a movement of the associated
10 part in the same direction, and this-without re
gard towhether or not the reversible transmis
sion ‘from which 'theyvderive their power is op
erated in one or'the other direction.
_
The output shaft 24 of the feed unit, in addi
15 tion to being movable through its‘motor drive, is
transmission having an output shaft controlling
the axial movement of‘the spindle, a second
shaft, an irreversible driving connection between
said second shaft and the output shaft of the
transmission and a reversible driving connection 5
between the first-named shaft and a feeding
means for said head.
'
, 4. In a machine tool. embodying a vertically
movable head, an axially movable spindle car
ried by the head, a reversible‘ variable speed 10
transmission having an output shaft controlling
‘the axial movement-of the spindle, a second shaft,
an} irreversibe driving connectionv between said
second shaft and the output shaft of the trans
mission, a reversible driving connection between 16
movable throughia pilot wheel 4| which may be the ?rst-named shaft and a feeding means for
selectively engaged therewith through the usual said head, and'means to manually operate the
clutch mechanisms, not herein disclosed. Pilot output shaft of the transmission.
wheel ll, may, therefore, be employed in opera
5. In a machine tool embodying a vertically
tion of any of the movable elements since the ‘movable head, an
movable spindle car- 20
output shaft 24 “controls, throughthe several ried by the head, a horizontally movable saddle
clutches and reversing mechanisms 2.1, 3|, and and a table movable transversely upon the sad
32, the operation of each of the movable ele
dle, a reversible variable speed transmission hav
ments. This feature is of considerable advan- ‘ ing. an output shaft, a feeding means for said
25 tage in the type of machine illustrated in that
spindle, a reversible connection between the 25
the operator may set the control levers for move
output shaft of the transmission and said feed
' ment of the selected part'in the selected direc
ing means, a second shaft, an irreversible driv
tion and, without reference to'the direction of ing connection between said second shaft and
movement of the pilot. wheel all, may shift the the output shaft of , the transmission and a re
30 selected part in a selected direction.
If, for ex-, , versible driving connection between the ?rst- 80
ample, while standing close to his work he is’ ' named shaft and feeding means for each of said
able to reach an arm of the pilot wheel but is head, said saddle and saidtable;
unable to move that arm through a suflicient arc
6. In a machine tool embodyingya vertica
to enable him to grasp a further arm, he may movable head, an axially movablev spindle car
oscillate the pilotwheel and thereby produce a ried by the head, a» horizontally movable saddle.35
continuous movement of the affected partin the‘ and a table movable transversely upon the sad
dle, a reversible variable speed transmission hav
Since the construction of the various elements ing an output shaft, a feeding means for said
may be considerably varied and the arrangement spindle, a reversible connection between the out
of the transmissions and transmitting shafts put shaft of the transmission and said feeding 40
may likewise ‘be varied to suit any-particular set means, a shaft, an irreversible driving connec- '
of conditions for which the machine must be. tion between said shaft and the output shaft of
constructed, I do not wish to be understood as the transmission, a reversible driving connection
selected
direction.
‘
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limiting myself to .the ' particular ‘arrangement
between‘ the ?rst-named shaft and 1 feeding
therein illustrated except as hereinafter claimed.
means for each of said head, said saddle and said 45
table, and means ‘to manually operate the out
1. In a machine tool embodying-a vertically put shaft of the. transmission.
.
movable head, an axially movable spindle car
7. In a machine tool embodying a'vertically
ried by the head,‘a horizontally movable saddle movable head, an axially movable spindle car
and a table movable transversely upon the saddle, ried by the head, a reversible ‘variable speed 5”
a reversible variable speed'transmissionhaving transmission having an output shaft, a feeding
an output shaft controlling .the axial movement means for said spindle, a reversible connection
of the spindle, a second_'- shaft, an irreversible between the output shaft ‘of the transmission
driving connection between said second shaft and said ‘feeding means, a second shaft, an ir
55 and the output shaft of the transmission and a ' reversible driving "connection ‘between said sec- 55
reversible drivin connection between the ?rst
‘0nd shaft and theoutput shaft-of the transmis
na'med shaft an feeding means for each of said sion and a reversible ‘driving connection between
head, said-saddle-and said table.
the ?rst-named shaft and a feeding means for
2. In amachine tool embodying a vertically said head.
'
00 movable head, an axially movable spindle carried
8. In a machine tool embodying a vertically 6p
by the head, a, horizontally movable saddle and a movable head, an axially movable spindle car
table movable transversely upon the saddle, a ried by the head, a rave ble variable speed,
reversible variable speed transmission having an transmission having an out ut shaft, a feeding
output shaft controlling the axial movement of means for said spindle, a r versible connection
the spindle, a shaft, an irreversible driving con
between the output shaft of the transmission and ‘5
nection between said shaft and-the output shaft said feeding means, a second shaft, an irreversi
of the'transmission, a reversible driving connec
ble driving connection between said second shaft
tion between theilrst-named shaft and feeding and the output shaft of the transmission, a re
means fc_v each of said head, said saddle and said versible driving connection between" the first
table, and means to manually operatethe output named shaft and‘a feeding means for said head, to
I
claim:
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shaft of the transmission.
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3. In a machine tool embodying a vertically
movable head, 'an» axially movable spindle car
ried by the head, a reversible variable speed
. and means to manually operate the output shaft
of the-transmission.
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RALPH! L. CO'I'I‘A.
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