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Патент USA US2110958

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March 15, 1938.
2,110,958
H. LINDNER
DRILLING MACHINE
Filed ‘July 15, 1.935
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4 Sheets-Sheet 1
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llnvenz‘or:
Herberf L/hdner
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March 15, 1938.-
‘
v H, LlNDNER
DRILLING MACHINE
Filed July 13, 1955
Fig.4 _
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2,110,958
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4 Sheets-Sheet 3
March 15; 1938. Y
H. LINDNER
‘
2,110,958
DRILLING MACHINE
Filed July 1;, 1955
4 Sheets-:Sheet 4
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[/7 yen/0r:
l/eréerf Lind/Yer
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2,110,958
I Patented Man-15,1938
'- UNITED STATES
PATENT OFFICE
2,110,958
DRILLING MACHINE
Herbert Lindner, Berlin-Wittenau, Germany
‘Application July 13, 1935, Serial No. 31,266
. ‘In Germany July 17, 1934'
'
14' Claims. (01. tabs)
Setting the‘ table of a machine drill when such
table is mounted for movements inv coordinate di
rections by means of microscopic observation of
scales arranged to move with the table is a well
known method of attaining accuracy in the re
sultant setting so that holes may be drilled at ac-.
curately determined points in the work. Such a
method, however, involves much loss of time,
since the setting of the table, no matter how
10 great the distance it must be moved, is accom
plished manually and is thus necessarily slow.
‘ Other drilling machines have been constructed
wherein the setting of the table is effected by
feed screws arranged to move the table in its
15 coordinate directions, such screws being hand
ment of the table or tool slide after approximate
position has been obtained by the power-driven
means.
'
With the'foregoing and other objects-in view.
the invention consists in the details of construc-
V claimed.
' ,
In describing the invention in detail, reference
will be had to the accompanying drawings form
ing ‘part of this application, wherein like char
acters denote corresponding parts in the several
headsrassociated with verniers. ’ vSuch adjusting
screws and their nuts are subject to wear with the
views, and in which-
consequence that back-lash develops in the ad
_
constructed in accordance with this invention;
Figure 2 is a front elevation of the lower par-rt 2.0
of such a machine drill;
Even if the screws
part of the invention; .
be arranged for clutch connection to "servo
motors to speed up the adjustment, the factor of
inaccuracy still persists and the machines .are
thus unsuitable-for ?ne work.
‘
A still further'form of machine drill embodies
a table wherein the coordinate movements arev
electrically e?ected'by servo-motors, the bed sup
» porting the tablé being provided for each coordi-'
nate direction with a'scale and vernier on- which
is mounted an adjusting stop and a coacting stop
‘
Figure 1 is a side elevation of_ a machine drill
This type of machine is thus not only slow, since
the screws are manually operated, but is apt to be
, inaccurate in the settings.
,
tion and in the arrangement and combination of ,10
parts to'be hereinafter more fully set forth and
operated and provided with circularly graduated
. lusting devices after a certain amount of service.
..5
justment of the table or tool slide to be attained.
A fourth important object of this invention is
to provide auxiliary manually operated means
adapted to be operated to obtain accurateadjust
-
‘
-
Figure 3v illustrates a plan view of the front ‘
‘
Figure 4 illustrates a diagrammatic view of the
bed-adjusting means including its gearing;
Figure 5 illustrates a schematic view of the
optical arrangement for such a machine drill;
Figure 6 illustrates a section on the line 6-6
of Figure 1;
'
'
Figure 7 illustrates an enlarged longitudinal 30
section‘ showing a modi?ed form of manual ad-'
justing means used herewith;
,
'_
Figure 8 illustrates a view similar to Figure 7 .
but showing a second modi?cation of the manual
'
'
'
->
vide‘d such that contact of coaoting stops effects adjusting means;
Figure 9 illustrates a detail view showing in
release from the action of the respective motor.
However, the time required to eifect suchrelease I section one form of microscopic apparatus for ob
being. arranged on the table and means being pro
. 3
as well as the inertia of the moving table pre
35
serving the scales used;
Figure 10 illustrates a view similar to Figure 9
and showing a second'form of such microscopic 40
device; and Figure 11 is ‘a front elevation of
plished under a magni?er. _>'
One important object of the present invention ’ another type of coordinate or jig boring machine
is to provide an improved means for adjusting the constructed in accordance with. the invention.
In the embodiment of the invention illustrated 45
table or tool slide of ‘a machine drill having all
in the accompanying drawings Figs. 1-6, there is 7
45 the advantages and none of the defects inherent
vents accuracy of adjustment, even though the
setting of the. ?rst mentioned stop be accom
v in the machines above described.
,
-
A second important object of this invention is
to provide improved means for‘ adjusting the
' ' table or tool slide of a machine drill, which means
include power driving means for quickly adiust
ing the table approximately-to its desired posi
.
tion.
-
-
A third important object of this invention is to
' provide a novel arrangement of scale and scale
65
observing microscopes for enabling accurate ad
provided a hollow .bed I irom the rear central
‘
portion of which rises a hollow standard 2 ex-'
tending forwardly to‘support a' vertically adjust- _
able head 3 carrying the drill spindle; The drill w
spindle is rotated by a motor (not shown) _
through gearing (not shown) contained in the
gear casing 5. The motor and gearing just men
tioned form no part of the present invention and
it isfor this reason that they are not shown, the u
2,110,958
spindle drive being of any well known or desired
form.
The sub-table 9 is supported for movement lon
gitudinally of the machine by rollers 6 and ‘l on
shears or ways ‘I’ and is provided centrally with
a pair of spaced ribs laterally engaging the prox
imal sides‘ of guides 8 formed on the middle part
of the bed I. On top of the sub-table 9 is a pair
of shears or ways 10 and H between which is a
10 rib l2. The bed proper I 3 is supported on and
nally of the bed I.
By this means the sub-table,
and consequently the table, may be adjusted lon
gitudinally of the bed.
On the top of the casing I4 is provided a pair of
operating handles 42 and 43 which are suitably
connected to the respective clutch members 28
and 36 so that by manipulation of these handles,
the clutches may be engaged and disengaged.
Also on top of the casing, ports are provided
through which may be observed measuring devices
guided by the parts III, II and I 2 just as the ' Z1 and Z2'of the type embodying a series of disks, 10
sub-table is supported on the base, but the table each bearing the digits 0 to 9. On the shaft 21 is
moves laterally of the sub-table. Obviously, fixed a bevel gear 44 which meshes with a bevel
movement of the sub-table correspondingly gear 46 ?xed on a shaft 46'. On the shaft 46' is
15 moves the table toward the front or rear of the
machine, while the movement of the table on the
sub-table effects lateral movement of such table
relative to the bed. Thus, the table is mounted
for movement in two coordinate directions be
20 neath the drill spindle, the axis of which is in
?xed position.
‘
A casing I4 is mounted on the front of the bed
substantially at its center, thus being in position
for, easy access by the operator of the machine.
25 Power driving means, such as a servo-motor, one
end of which is shown at l5 in Figure 1, is car
ried by the casing l4. Mounted on the shaft of
this motor is a chain gear 15b driving a chain gear
l5¢l ?xed on the shaft l5a by means of a' chain l5°.
30 The shaft l5a extends through the casing I4 and
has on its outer end a hand wheel 59. Further
?xed on the shaft I58L is a worm l6 which meshes
with a worm gear I‘! splined on a shaft 2| ex
tending longitudinally of the casing and project
35 ing through its front.
The front end of this
shaft is provided with an operating handle where
by it may be longitudinally moved, the shaft 2|
being slidably mounted in the casing. Fixed on
the shaft 2| is a relatively small gear I8 and a
40 relatively large gear I9.
The small gear I8 is
arranged to mesh with a gear 22 ?xed on a shaft
extending through the casing. On the shaft 23
is also ?xed a gear 25 wherewith the gear l9
meshes when the shaft 2| is moved forwardly to
disengage the gear l8 from the gear 22. Thus,
the gears I8, I9, 22 and 25 form a change-speed
gearing. The gear 25 carries a clutch member
26. Alined with the‘shaft 23 is a shaft 21 which
extends longitudinally of the bed and has splined
50 thereon a clutch member 28 movable into and out
of engagement with the clutch member 26 so that
the shaft 21 ~may be made to revolve in unison
with the shaft 23. On the shaft 2-‘! is splined a
worm 28 which meshes with a worm-wheel 29
u in ?xed on a vertical shaft 30.
A gear 3| is ?xed
on the upper end of the shaft 30 and meshes
with a rack 32 ?xed transversely to the under
side of the table I3. It may now be seen that
revolution of the shaft 21 will cause lateral move
60 ment of the table, the splining of the worm 28 on
its shaft 21 permitting this in any position of
the sub-table 9. On the shaft 23 is also ?xed a
gear 24 meshing with a gear 33 rotatably mount
ed on a shaft 35 extending longitudinally of the
bed I and into the casing l4. The gear 33 is
provided with a clutch member 34 adapted for en
gagement and disengagement by a clutch member
36 splined on the shaft 35.‘ By this means, the
shaft 35 may, whenever desired, be driven from}
the shaft 23.
_
Fixed on the shaft 35 is a worm 31 which-mesh
es with a gear 38 ?xed on a vertical shaft 4|.
The shaft 4| has a gear 33 ?xed to its upper end
and this gear meshes with a rack 40 ?xed to the
?xed a bevel gear 41 which meshes with a bevel
gear 48 mounted on the shaft of the measuring
device Z1. Similarly, on the shaft 35 is ?xed a
bevel gear 45 meshing with a beveled gear 49 ?xed
on a shaft 49'- carrying a second bevel gear 50
meshing with a bevel gear 5| ?xed on the shaft of
the device Z2. The two gear trains just described
are so proportioned that for each unit of space
traversed by the table or sub-table, such unit is
indicated by the respective measuring device Z1
or Z”.
,
25
Beneath the bed, is mounted a revoluble scale
52 having the scale divisions arranged spirally
thereon. In the form shown inFlgures 1 to 6,
an edge graduated disk 51 is fixed adjacent one
end of the scale 52 and adjacent this disk, is a 30
?xed disk 5'!’ bearing on its edge, vernier gradu
ations.
The disk 51 carries a bevel gear ,528 '
which meshes with a bevel gear 52b ?xed on r
short shaft 52c which extends through a housing
52‘1 carried by the sub-table. On the upper end
of the shaft 52c is a manipulating knob 56. Sim
ilarly, a revoluble scale 53 is provided for the
sub-table, the operating means for which may be
identical with that of the scale 52, or as shown in
Figure 5 the graduated disk 51 is provided with
a knurled head 5'1,a for rotating the scale 53. 40
For the scale 52 there is provided a microscope
having an eye-piece 55 projecting above the cas_
ing and an object-piece 55a ?xed in the sub-table
9 adjacent the scale 52. Similarly, for the scale
53 is a microscope having an eye-piece 54 and an
object-piece 54‘1 mounted on a tube 54b which is
?xed on the lower portion of the front of the
standard 2. In each microscope arrangement
the light rays traverse the open space between
object-‘piece and eye-piece passing a hole 69, (10)
in the front‘ wall~of the sub-table 9.
In Figures 9 and 10 are shown certain micro- I
scope arrangements for use herewith. In each
of these ?guresjre?ecting prisms p are used to
direct the light rays, indicated by arrows, through
the lenses of the lens systems. In Figure 9, the
object-end of the microscope is provided. with a
semi-transparent mirror 54¢I mounted on a. tube
54*. A lamp 54r provides light which is re?ected
from this mirror onto the- scale 53 and the light
passes back through the mirror to the eye-piece
54. .In the form shown in Figure 10, a lamp 558
is mounted in the microscope tube and light from
this lamp is re?ected by the prism 1)’ onto the
scale 52, the light being re?ected from the scale
back through the objective of the microscope to
the eye-piece._
A modi?cation of the adjusting device for fine
measurements is shown in Figure 7_wherein the
scale 52 passes through a sleeve; 52' having a
chamber 52!. A collar 52(2 is provided on the
sleeve in this chamber and between this collar
and the bottom of the chamber there is pro—
15 under side of the sub-table 9 to extend longitudi _ videcl a spring 61 which urges .thecollar away
60
3
2,110,908
from the bottom _ and consequently urges the
wheel 50' are provided. Scales for measuring the
scale in the same direction. The mouth of the
chamber is closed by a nut 60u wherethrough is
scopic means for observing the scales, an'd'meas».
displacement ‘of these movable members, micro- ,1
screwed a micrometer screw 60 having a head 6|
uring devices for approximately measuring the;
fixed thereon. The head 6| has a skirt 6|“ sur
rounding the graduated barrel 60b of the nut,
the skirt 6| being provided with a' graduated sur
in a similar manner as in thetype of machine;
drill described before.
face as is common in micrometers. A ball bear
ing 00° is located between the scale 52 and screw
10 50. A key -66 is‘ provided to prevent the scale
from rotating.
'
-
In the form shown-in Figure 8, there is pro
vided a slide 63 guided to move transversely of
the microscope tubes, and having a vglass 55°,
15 (54“) on which. is ruled lines 62“ adapted to be
- brought into coincidence with the scale lines. A
micrometer screw 04 is fitted in a nut 88 ?xed in
a barrel (iiia projecting from the microscope tube.
This screw bears against a stem 58“ projecting
20 from the-slide'63. A head 65 is hired on the
screw 64 and has a graduated skirt 05" surround
ing the barrel which is also graduated. In each
of these forms, the micrometer is used in the
- ordinary manner to obtain the ?ne adjustment.
25
A snap switch 58 on top of the casing ll con
trols the current for the servo-motor I51, A hand
wheel 59 is ?xed on the projecting end of the
shaft '5“.
-
In order to understand the manipulation of the
30 machine, let it be supposed that the cylindrical
scales are graduated in millimeters, the disks 5‘!
each having 100' graduations and the vernier 9
graduations occupying the space of 10 of the disk
graduations. Let it be also supposed that the
microscopes are provided with suitable means to
indicate the line of collimation. First, the table‘
displacement of the said members are arranged ,-.
There has thus been provided a highly. e?i-v ~ ‘
cient device of the kind for the purposes speci?ed.
It is obvious that changes may be made in the 10
form and construction of the invention without
departing from thematerial principles involved.‘
It is not, therefore, desired to confine the inven
tion to the exact forrn‘herein shown and de
scribed-‘but it is desired to include all forms
which come within the scope of the appended
claims.
I
5
claim:
. 1. In
'
.
'
'
-
a
,
-
a machine drill, a bed, a sub-table
mounted on said bed for movement in a de?nite 20
path, a table mounted on said sub-table for move
ment in a path at an angle to the path of move
ment of ‘the sub-table, a servo-motor having a
circuit including a switch, gearings driven from
said servo-motor and arranged to move the sub
table and table along their paths upon operation
of the motor, said gearings including clutch
means for the sub-table and other clutch means
for the table, said motor actuating a shaft for
driving said, gearings, a hand wheel on said shaft
whereby the shaft may be rotated when the mo
tor circuit‘ is opened, measuring means for ap
‘proximately indicating the movements of the
table and sub-table, and gearings connecting said
measuring means respectively with the gearing
for the sub-table and the gearing for the table.
2. In a machine drill, a bed,'a sub-table mount
, or sub-table, as the case may be, will be con-. '
nected through its gearing to the shaft l 5‘. Now, ed on said bedfor movement in a de?nite path,
a table‘ mounted on said sub-table for‘ move‘
a division of the scale 52 or 53 respectively. is . ment. in a path at an angle to the path of move 40
brought, by rotation of the knob 56, into coinci
ment of the sub-table, a servo-motor having a
dence with the line of collimation of its micro
circuit including a switch, gearings driven from
scope and the reading on theproper measuring, said servo-motor and arranged to move the sub
device Z1 or Z2 noted. The knob 56 is now turned table and table along their paths upon opera
until the scale-on the disk and the Vernier indi
tion of the motor, said gearings including clutch
cate the proper fractional parts. of a millimeter means for the sub-table and other clutch means
- desired. The switch 58 is now closed to bring the ‘for the table, said motor actuating a shaft for
servo-motor into service. and the motor is allowed driving said gearings, a hand wheel on said
to‘ operate until the respective measuring device shaft whereby the shaft may be rotated when
Z1 or Z2 indicates that the desired adjustment has the motor circuit is opened, measuring means.
50 been approximately attained. The motor is now for approximately indicating the movements of, '
cut out and the hand wheel '59 operated until the the table and sub-table, gearings connecting said».
required scale division for the whole number .01’ measuring means respectively with the gearin
millimeters is brought into the line of collimation‘ e for the sub-table and the gearing for the table; ,
of the microscope.
,
scales carried by said sub-table and table,. said Fat
55
By this means. it is possible to readily attain scales being mounted on the sub-table and table.
an accuracy as close as 0.001 mm. and that with ‘ independently of the means for-moving the‘ table _
great rapidity. The invention may be employed and sub-table and extending in their directions’ 1. ,
in any type of. coordinate or jig boring machine: of movement, and microscopes arranged for ob?
for example, in a machine drill of the kind in . servation of said scales.
.'
i
3. In a machine drill, a bed, a sub-table mounts .
» ed on said bed for movement in a de?nite ‘path, _
rights (planing machine type of housing). while a table mounted on said sub-table for move-1M‘,- ’
.60 which the tool spindle support is slidably mount
ed on a cross rail carried on two vertical no
the work table is slidable cnthe bed oi’ the ma
chine 1 in a path at right angles to the path of.
movement of the tool spindle support. Such a
_ machine is illustrated in Figure 11 as a sche
matic i'ront elevation.v The work-table 12 slides
' fromthe bed II on which rise the two verticalup
70
rights or standards 13 carrying the cross-rail
‘ll. Siidably-mounted ‘on the cross-rail ?ll is the
tool spindle support 15. Movement of the table
" ' ‘I2 is effected by a servo-motor IE or by the hand
mentin a path at an angle tothe path of .move-
'
ment of the sub-table, a servo-motor having a. 05
circuit. including a switch, gearings' driven from
' said servo-motor and arranged to move the'sub-,
table and table along their paths upon opera
tion of the motor, said gearings includingclutch . '
means for the sub-table and other clutch means;
for’ the table,‘said motor actuating a shaftffo
driving said gearings, a hand wheel on vsaid sh
whereby the shaft may be rotated when the'n‘rdl ‘
wheel 59. Similarly, for. transverse movement of tor circuit is opened, measuring means, for- ap
vproxirnately indicating the movements of the 75
76 the tool spindle support a motor i5’ and a hand
4
2,110,958
table and sub-table, gearings connecting said
servo-motor and arranged to move the sub-table
‘measuring means respectively with the gearing and table along their paths upon operation of
for the sub-table and the gearing for'the table, the motor, said gearings including clutch means
scales carried by said sub-table and table, said for the sub-table and other clutch means for the
Cl scales being mounted on the sub-table and table
table, said motor actuating a shaft for driving 5
independently of the means for moving the table said gearings, a hand wheel on said shaft where
and sub-table and extending in their directions by the shaft may be rotated when the motor cir
of movement, microscopes arranged for observa
cuit is opened, measuring means for approxi
tion of said scales, said scales being mounted for mately indicating the movements of the table
10 movement-‘of adjustment on the sub-table and
and sub-table, gearings connecting said measur
table respectively, and manually operable means ing means respectively with the gearing for the
for adjusting said scales.
'
sub~table and .the gearing for the table, scales
4. Ina machine drill, a bed, a sub-table mount
carried by said sub-table and table, said scales
ed on said bed for movement in a de?nite path,
a table mounted on said sub-table for movement
in a path at an angle ,to the path of movement of
the sub-table, a servo-motor having a circuit
including a switch, gearings driven from said
being mounted on the sub-table and table inde
pendently of the means for moving the table and
sub-table and extending in their directions of ,
movement, microscopes arranged for observation
of said scales, said scales each including a rotat
servo-motor and arranged to move the sub-table
able rod having graduations arranged spirally
20 and table along/their paths upon operation of _ thereon, a graduated disk ?xed to said rod, man 20
the motor, said gearings including clutch means
for the sub-table and other clutch means for
the table, said motor actuating a shaft for driv
ing said gearings, a hand wheel on ‘said shaft
whereby the shaft may be rotated when the
motor circuit is opened, measuring means for
approximately indicating the movements of the
table and sub-table, gearings' connecting said
measuring means respectively with the gearing
for the sub-table and the gearing for the table,
scales carried by said sub-table and table, said
scales being mounted on the sub-table and table ,
independently of the means for moving the table
and sub-table and extending in their directions
of movement, microscopes arranged for observa
tion of said scales. said scales being mounted for
movement of adjustment on the sub-table and
ually operable means operatively connected to
the disk to effect rotation of the disk and rod.
and a vernier cooperating with the graduations _’
of said disk.
’
_
'7. In a machine drill, a bed, a sub-table mount 25
ed on said bed for movement in a de?nite path, a
table mounted on said sub-table for movement
in a path at an angle to the path of movement
of the sub-table, a servo-motor having a circuit
including a switch, gearings driven from said 80
servo-motor and arranged to move the sub-table
and table along their paths upon operation of
the motor, said gearings including clutch means
for the sub-table and other clutch means for the
table, said motor actuating a shaft for driving
said gearings, a hand wheel on said shaft where
by the shaft may be rotated when the motor cir
table respectively, and manually operable means cuitv is opened, scales carried by said ‘sub-table
for adjusting said scales, said'last means in- , and table, said scales being mounted on the sub
40 eluding a graduated disk and a vernier scale for
table and table independently of the means for
said disk.
'
‘
moving the table and sub-table and extending
5. ma machine drill, a bed, a. sub-table mount-v in their directions of movement, microscopes ar
ed on said bed for movement in a de?nite path,
ranged for observation of said scales, control~
, a table mounted on said sub-table for movement
ling levers for said clutches, eye-pieces, for said
in apathat an angleto the path of movement
microscopes, and an operator’s table, said con 45
of the sub-table, a servo-motor having a circuit
trolling levers, switch and eye-pieces being'lo
including a switch, gearings driven from said~ cated on said operator’s table.
servo-motor and arranged to move the sub-table
r‘ 8. In a machine drill, a bed, a sub-table mount
and table along their paths upon operation of - edv on said bed for movement in a definite path, a
the motor, said gearings including clutch means table mounted on said sub-table for movement in
50
for the sub-table and other clutch means for the
a path at an angle to the path of movement of
table, said motor actuating a shaft for driving the sub-table, a servo-motor having a circuit in- _
said gearings, a hand wheel on said shaft where
eluding a switch, gearings driven frdm said servo—
. by the shaft may be rotated when the motor cir
- cuit is opened, measuring means for approxi
mately indicating the movements of the table
and sub-table, gearings connecting said meas
uring means respectively with the gearing for
motor and arranged to move’ the sub-table and
table along their paths upon operation of the
motor, said gearings including clutch means for ,
the sub-table and other clutch means for the‘
table, said motor actuating a shaft for driving
the sub-table and the gearing for the table, scales » said gearings, a hand wheel on said shaft where
GU
carried by said sub-table and table, said scales
being mounted on the sub-table and table inde
pendently of the means for moving the table and
sub-table and extending in their directions of
by the shaft may be rotated when the motor cir
cuit is opened, measuring means for approxi
mately indicating the movements of the table I
to the disk to effect rotation of the disk and rod.
and sub-table, gearings connecting said measur
‘ing means respectively with the gearing for the
sub-table and the gearing for the table, scales 65
carried by said sub-table and table, said scales
being mounted on the sub-table and table inde
pendently of the means for moving the table and,
sub-table and extending in their directions of
6. In a machine drill, a bed, a sub-table mount
ed on said bed for movement in a de?nite path,
movement, microscopes arranged for observa—
tion of said scales, controlling levers for said 70
movement, microscopes arranged for observation
of said scales, said scales each including a rotat
able rod having graduations arranged spirally
thereon, a graduated disk ?xed to said rod, and
manually operable means operatively connected‘
a table mounted-on said sub-table for‘ movement clutches, eye-pieces for said microscopes, and an
in a path at an angle to the path of _movement' operator’s ‘table, said controlling levers, switch '
.of the sub-table, a' servoi-motoi' having a circuit and eye-pieces being located on-said operator's
including a switch, gearings driven from said
> table.
5
c
12. In a machine'drill of ‘the type having a bed,
a sub-table and a table and wherein the sub-ta
9; In a machine drill, a bed,’a sub-table mount
ed on said-bed for movement in a de?nite path,
a table mounted on said sub-table for movement
in a path at an‘ angle to the path of movement
of the sub-table, a servo-motor having a circuit
ble is guided on the bed to move in a rectilinear
path and the table is guided on the sub-table to
move in a rectilinear path at rightangles to the
path of the sub-table, said machine drill having
including a switch, gearings driven from, said
means for moving said sub-table and table along
servo-motor and arranged to/rnove thesub-table
and table along theirpaths upon 0 ration of the
motor, said gearings including clu ch means for
their paths including an operator’s stand, a
servo-motor, a circuit for said‘ motor including'a
switch'located at said operator’s stand, gearings 10
connecting said motor with said sub-table and
table and driving said sub-table and table, each
'
10 the sub-table and other ‘clutch means for the
table, said motor actuating a shaft for driving
said gearings, a hand wheel on said shaft where
by the shaft ‘may be rotated when the motor cir
cuit vis opened, measuring means ‘for approxi
16 mately indicating the movements of the table
and subetable, gearings connecting said measur
of said gearings including a clutch, means for se
lectively operating said clutches ‘and including
operating handles mounted on said stand, scales 15
. carried by said sub-table and table, microscopic
means for observing each ‘scale and having an eye
piece mounted on said stand, the gearings driv
carried by said sub-table and table, said scales - _'ing said sub-tablev and table including a. main
being mounted on the sub-table and table‘ inde? “shaft driven'by said motor, and a hand wheel on 20
pendently oi the means for moving the table and
13. In a machine drill of the type having a bed,
‘sub-table and extending‘ in their'directions of
movement,- microscopes arranged for observation a sub table and a table and wherein the sub~
' of said scales,_cont_rolling' levers for said clutches, table is guided on the bed to move in a rectilinear
eye-pieces for said microscopes, and an operator's path and the, table is guided on the sub-table 25
, table, said controlling levers, switch and eye-g ‘to move in a, rectilinear path at right angles to’
' pieces being located on said operator’s table, said thepath of the sub-table, said machine drill hav
ing means [for moving said sub-table and table
‘approximate measuring means being located be
along their paths including an operator’s stand, a
neath the operator's table and the operator’s ta
servo-motor, a circuit for said motor including a 30
~80 ble" having openings wherethrough the approxi
mate measuring means may be observed.
_ , switch located at said operator’s stand, gearings
connecting said motor with said sub-table and
10. In a machine drill oi the typehaving a bed
table and driving said sub-table and table, each
a sub-table and ‘a table and wherein the sub
ing means respectively with the gearing for the
sub-table and the gearing for the table. scales
'
saidmain shaft. '
.
-
table is guided on the bed to move in a rectilinear
of said gearings including a clutch, means for
located at said; operator’s stand, gearings con-7
the'clutches and the sub-table and table, the
gearings driving said sub-table and table includ
85 path and the table is guided on the sub-table to selectively operatingvsaid clutches and including 35
.move in a rectilinear path at right angles to the operatingv handles mounted ‘on said stand, a
‘\path of the sub'-tab1e,'-said machine drill having - pair of rotary mechanical measurement indica
means for m
g said sub-table‘v and table ‘along tors mounted’ on‘said stand and exposed for
visual observation, gearings connecting the indi
their paths including an operator’s stand, a servo
cators with the ?rst mentioned gearings between
40 motor, a‘; circuit for said motor including aswitch
nectingsaid motor with said sub-table and table
and driving. said sub-table and table, each of
ing a main shaft driven tby said motor, and a
said gearings including a clutch, means for se
hand wheel on said main shaft.
, I
‘
45 lectively operating said clutches and including
14. In a machine drill of the ‘type having a bed,
operating handles mounted on said stand, a pair —’a ‘sub-table and a table and wherein the sub
of rotary mechanical measurement indicators table is guided on the bed to move ‘in a rectilinear
path and the table is guided on the sub-table to
mounted on said stand and ‘exposed for visual ob
servation, and gearings connecting the indica-' move in a rectilinear path at right anglesto the
path of the sub-table, said machine drill having 50
50 tors with - the ?rst mentioned ‘gearings between
means for moving said sub-table and table along‘
the-clutches and the sub-table and table.
11. In a machine drill of the type having a bed, their paths including‘ an operator’s stand, a servo
a sub-tableand a table and wherein the sub-table, , motor, a circuit for said motor including a
is guided on the bed to movein a rectilinear path switch located at said operator’s stand, gearings.
.and the table isguidedon‘ the sub-table to move connecting said motor ‘with said sub€table and
‘in a rectilinear path at right angles to the path _ table and driving saidsub-table and table, each,
- or the sub-table, said machine drill having means . of said gearings including a clutch, means for
for moving said sub-table and table along their selectively operating said clutches and including
paths including an operator’s, stand, a servo 1 operating handles mounted on said stand, scales
carried by said sub-table and table, microscopic
a circuit for said motor including ‘a switch
.00 motor,
located at said operator’s stand, gearings con
65
V60
means for observing each scalev and having an _
necting said motor with said sub-table and table
eye piece mounted on said-‘stand, a pair of rotary
and driving said sub-table and table, ‘each of said:
mechanical measurement'indicators mounted on -
gearings including a clutch, means for selectively‘
said stand and exposed for visual observation,. 65
gearings,con_necting the indicators with the ?rst
mentioned gearings between‘ the clutches and the
operating said clutches ‘and including operating
handles mounted on said stand, scal'es carried by
said sub-table and table, microscopic means forv ‘ sub-table and table, ‘the gearings driving. said
sub~table and table including a main shaft driven
by said motor, and a hand wheel on sai'djmain ,.
a, _, observing each scale and having‘an eye piece
' , mounted on‘said stand, a pair of rotary mechani
cal measurement indicators .mounted on'said
stand and exposed/tor visual observationiiand '_
..8ha?;.'
_ gearings connecting'the‘ indicators with the ?rst-'_
‘mentioned s earings ‘between- the clutches and
the sub-tab e and table.
- ,
__
'
-
HERBERT mags/a.
70
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