Page 1
★
FEATURES
BAUSH
RADIAL DRILLING
AND
TAPPING MACHINES
Page 2
ever work is done on single spindle
, Baush Radial Arm Drilling and
ing Machines are proving capable
aintaining
:y, speed, and dependability, as well
xibility.
ecially
needs of today’s three-shift opera-
, the machines described in this
tin have become very popular with
aft and automotive manufacturers,
h engineers have developed new re
lents,
>ility without sacrificing accuracy,
rol and adjustment are held within
i simple motions, easily learned by
operators. Manual effort has been
:ed to a minimum.
neet
1 arm combination tapping and
rig machine, Baush offers the im-
;d model shown in the left-hand
ration. This machine is identical
the improved model for lead screw
ng only (shown at right), except
the head is equipped to receive
al quill holder and spindle with
e taper for drills up to y<±' dia. in
Each machine has these outstand-
Karacteristics:
mn and base are constructed in one
of heavy ribbed cast iron section
integrally cast ways 18" overall
i. Adjustable knee table is mounted
e ways and supported by a powerful
l jack. Table is locked in position
and clamping studs,
m is of large rectangular section to
nize deflection. It is rigidly
light ball bearing rollers within
:arriage.
ited beneath the arm, and four are
larly supported on eccentric journals
idjustment
l-inch diameter post with swivel
age mounted on ball thrust bear-
gives steady support to arm at any
me position throughout an arc of
The lead screw spindle assembly
Dunted in a heavy quill which in
is held in a stout quill binder at
)wer part of the head.
machine will handle parts up to
feet in height, including fixture.
I parts are clamped onto the ad-
ble
ed by means of a convenient hand
:. Minor vertical adjustments for
"e clearances or variations in tap-
levels
uill vertically. Parts too large to be
d on the table may be set on the
high standards in ac-
designed to meet the mani-
giving greater speed and
TWO MACHINES
the growing demand for a
RIGIDITY
mounted
Four of these rollers are
of
tension or play. A
VERSATILITY
knee table, which is raised or
are quickly made by moving
PRECI
LEAD S
TAPF
BAUSH COMBINATION RADIAL DRILLING AND TAPPING MACHINE
For single spindle drilling and countersinking with automatic depth control; or lead
screw tapping with electric counting switch and automatic return. Has eight spindle
and lead screw assemblies. Quick change-over from one operation — or spindle
size — to another. Weight 3500 lbs. net.
TWO SINGLE SPINDLE MACHINES
RIGIDITY
-
VERSATILITY
-
ACCURA
DES
Page 3
m
Rigid heid-
houses electrical
control mechan
ism and spindle
quill
.
Carriage-
arm moves on p
ball bearings T
rSc brake
die drive
ifimtely vari-
ble speed drive
7" dia. swivel post
- carnage mount
ed on ball thrust
bearings
"ri
Colu n n - heavy
Crank - pro
vides easy ad
justment of
table height
Powerful
screw jack
supports knee
table
Adjustable knee ta
ble. Working surface
22" * 26". Vertical
travel 18
Eight marked
drawers for hold
ing spindles and
nuts when not in
ise
Rugged base, in
tegrally cast with
column for great
er rigidity
Heavy ways
which k n
table slides
and down
^
cast r >n
coo
; houses
nt tank,
and elec-
iquipmcnt
i
!
For single spindle lead screw tapping. Design and construction are identical with that
of BAUSH COMBINATION RADIAL DRILLING AND TAPPING MACHINE, shown at the
left, except that this model is not equipped for drilling and countersinking. Weight
3500 lbs. net.
BAUSH RADIAL LEAD SCREW TAPPING MACHINE
IGNED FOR THREE-SHIFT OPERATION
Y ■ EFFICIENCY
¥
-
DEPENDABILITY
floor along side the machine, since the
arm swings in an arc of 360° and the
spindle head covers a working area of 35
square feet.
ACCURACY
Where accurate taps and tap drivers
are used, a fit between class 3 and 4
threads may be obtained with these
machines. This precision is possible be
cause of (1) lead screw tap driving, a
principle that insures proper thread
characteristics; and (2) a laterally float
ing head which allows the spindle to
in the hole, and thus prevents any tend
ency to enlarge the thread diameters.
Correct depths of threading are con
follow the irregularities
of thread cutting
sistently obtained by the use of an auto
matic electric counting switch. This
mechanism counts out the proper num
ber of spindle revolutions, and (by the
use of a magnetic disc brake mounted
on the spindle drive) causes the motor
to stop the spindle precisely at the end
of the tapping cycle.
Drilling depths, also, are set easily by
means of a graduated post with lock
nuts and a stop bracket, mounted on
the quill holder at the side of the head
of the combination drilling and tapping
machine.
Squareness of table and spindle is
assured by extra heavy ways scraped to
close dimensions.
EFFICIENCY
Tapped holes with No. 3 and No. 4
class of thread fit may be obtained auto
matically on these BAUSH machines
in one tapping operation — without
rough tapping.
Faster tapping work output with less
rejections is possible because of the
electric counting switch mentioned. This
switch not only governs the cycle of the
tapping spindle, causing it to stop posi
tively at a pre-determined depth after
the thread cutting has been completed
but also reverses the motion automati
cally, causing the tap to withdraw and
stop at the starting position.
Setting of this counting switch for
correct tapping depth is simplified
through the use of a numerical chart
located on the side of
the tapping head.
Motor start and stop buttons are
placed conveniently on the front of the
tapping head just below the counting
switch. The stop button is used in
drilling and countersinking, and also
enables the operator to stop and reverse
the motor at any point of tap travel
in case of emergency.
Speed changes are made by simply
turning a combination speed indicator
handwheel which is located at the side
Page 4
of the motor housing. This handle
con-
trols an infinitely variable speed drive
employing a Reeves variable speed
pulley. Tap and lead screw changes are
accomplished quickly by a single motion
on a spring latch. Lead screw spindle
assemblies are stored away in eight in
dividual drawers located conveniently
beneath the table.
DEPENDABILITY
All gears in the tapping head are mount
ed on ball bearing-supported shafts,
and run in a bath of oil. Lead screw is
made of special alloyed steel from a
master, and the lead screw nut is made
of special hard bronze for smooth, long-
wearing operation. A safety device in
Specifications
Horsepower of Motor
Drilling capacity (in steel) hand feed V2* dia.
Tapping capacity (in steel) power
feed
......................................................
Size of spindle
Spindle speeds, infinitely variable.
Lead screw travel
Quill adjustment.
Vertical adjustment of knee table
Minimum distance spindle
of column
Maximum distance spindle
of column . ............... ...............
Working
Safe
load
jack supported)
Minimum distance spindle nose to
table
nose
.............................
...........................................
surface of knee
limit on knee table (screw
.....................................................
................................
to center
to center
table
... 18"
.........
Vz
Vz° dia.
2 M.T.
. . 180 to
540
2"
4"
12"
42"
22"
2000 lbs.
8"
R.P.M.
x 26"
the form of a compensating spring is
incorporated in the lead screw assembly.
It prevents damage to the machine and
to the work should the operator run
the tap onto the work surface. All elec
trical equipment is of the best, tried
and proved to insure proper control at
all times.
In developing these improved ma
chines Baush engineers have recognized
the need for unvarying accuracy. Each
feature has been tested thoroughly.
Every precaution has also been taken
to insure RIGIDITY — VERSATIL
ITY — EFFICIENCY and DEPEND
ABILITY : qualities that will mean
better production and lower costs, with
less tie-ups and less maintenance.
Maximum distance spindle nose to
table
...........
Thickness of machine bed ...............
Maximum distance spindle nose to
top of base
Maximum distance spindle nose to
floor
Size of ways for
Floor
space
of arm
Floor space required for foundation
Overall height of machine
Net
weight
Shipping
Size of packing case
.................................
........................
.....................................................
knee
required for max. swing
table
...............
...............
of
machine (approx.)
weight
...
30"
47i/2"
53"
11/2" thick
x 18" wide
. 57" radius
. 32" wide x
57"
long
. 84"
. . 3500 lbs.
5500 lbs.
44"
wide
95" deep x
99" high
x
Interchangeable for Drilling and Countersinking
or for Lead Screw Tapping
The Baush Combination Radial Arm Tapping
and Drilling Machine offers quick and easy
change-over from drilling and countersinking to
lead screw tapping or
advantage, especially on heavy parts where a
few
small
it
saves
holes are to be drilled and tapped, as
transferring the job to another machine.
vice
versa. This is a great
BAUSH MACHINE
The quill holder accommodates either a
drilling or tapping spindle. When a latch is
pressed, the spindle assembly drops out, and
the assembly for another type spindle is easily
set in place. Eight file drawers in knee table
to hold lead screw spindles.
TOOL COMPANY
Springfield, 7, Massachusetts, U. S. A.
13 M 9-14
SINCE 1896
Printed in U. S. A.
BADS
Hydraulic Multiple Spindle Drilling and Tapping Machines
Universal Joints
Combination Drilling and Tapping Machines
Lead Screw Tapping Machines
Worms and Gears
Horizontal Boring Mills
Loading...