Post on 31-Jan-2017
SELF-FEED DRILL UNITS
MK III BROOMATICSALES/ENGINEERING
FEATURES
The Building Blocks of Low Cost Drilling and
Tapping Automation
Table of Contents
PAGE 1 FIG. 1 PNEUMATIC MK III WITH STANDARD 3/8” CAPACITY DRILL CHUCK.
PAGE 2 FIG. 2 ELECTRIC MK III WITH TYPE 650 MULTI-SPINDLE DRILLING HEAD.
PAGE 3 FIG. 3 OPTIONAL EQUIPMENT THAT CAN BE FITTED TO THE MK III.
PAGE 4 FIG. 4 RANGE OF MOUNTING CLAMPS THAT ARE OFFERED. FIG. 5 SWARF EXCLUSION KIT FITTED TO THE MK III.
PAGE 5 FIG. 6 METHOD OF ATTACHING THE HYDRAULIC FEED CONTROL. FIG. 7 METHOD FOR ADJUSTING THE HYDRAULIC FEED CONTROL.
PAGE 6 FIG. 8 CONTROL HEAD SHOWING SEPARATE INLET PORTS FOR AIR SUPPLY.
FIG. 9 CONTROL HEAD ADAPTED FOR SINGLE AIR CONNECTION.
PAGE 7 FIG. 10 CONTROL HEAD SHOWING NON-RETURN VALVES FITTED. FIG. 11 CONTROL HEAD SHOWING PORT ADAPTERS FITTED IN
DWELL PORTS.
PAGE 8 FIG. 12 CONTROL HEAD SHOWING METHOD OF ADJUSTING FORWARD FEED RATE.
FIG. 13 CONTROL HEAD SHOWING METHOD OF ADJUSTING RETURN FEED RATE.
PAGE 9 FIG. 14 CONTROL HEAD WITH SPOOL VALVE PARTIALLY REMOVED. FIG. 15 CONTROL HEAD WITH SPOOL VALVE AND BRASS BUSH
REMOVED.
PAGE 10 FIG. 16 CONTROL HEAD WITH THE TWO NEEDLE VALVE CARTRIDGES REMOVED.
FIG. 17 QUILL PULLED FORWARD TO SHOW THE METHOD OF CHANGING THE SPEEDS.
PAGE 11 FIG. 18 FEED STROKE ADJUSTMENT SCREW POSITIONED ABOVE AUTO RETURN VALVE.
FIG. 19 BUILT IN SOFT START FEATURE INCORPORATES FOUR ROWS OF HOLES.
PAGE 12 FIG. 20 STRIP DOWN OF THE PNEUMATIC MKIII INTO SUB- ASSEMBLIES.
PAGE 13 FIG. 21 SELECTING AVERAGE DRILLING FEEDS AND SPEEDS CHART
AIRMACHINES.COM
1
FIG
. 1P
ne
um
ati
c M
K II
I wit
h s
tan
da
rd
3/
8"
ca
pa
cit
y d
ril
l c
hu
ck
an
d o
pti
on
al
fo
ot
mo
un
tin
g b
ra
ck
et.
AIRMACHINES.COM
2
FIG
. 2E
lec
tric
MK
III w
ith
typ
e 6
50
mu
lti-s
pin
dle
dr
illi
ng
he
ad
an
d o
pti
on
al
fo
ot
mo
un
tin
g b
ra
ck
et.
AIRMACHINES.COM
3
FIG
. 3O
pti
on
al
eq
uip
me
nt
th
at
ca
n b
e f
itt
ed
to
th
e M
K II
I un
it
(A)
Bay
on
et
no
se
ho
us
ing
ad
ap
tor
(B)
Typ
e 6
50
ad
jus
tab
le t
win
sp
ind
le d
ril
lin
g h
ea
d(C
) T
ype
95
0 a
dju
sta
ble
tw
in s
pin
dle
dr
illi
ng
he
ad
(D)
Sin
gle
sp
ind
le t
ap
pin
g h
ea
d(E
) E
xh
au
st
co
lle
cto
r w
ith
mu
ff
ler
s(F
) A
dju
sta
ble
hyd
ra
uli
c f
ee
d c
on
tro
l u
nit
(G)
Sc
re
wd
riv
er
att
ac
hm
en
t
(A)
(C)
(B)
(D)
(E)
(F)
(G)
AIRMACHINES.COM
4
FIG. 4Range of mounting clamps that are offered for use with the MK III unit
FIG. 5MK III drill unit with the swarf exclusion kit fitted.
AIRMACHINES.COM
5
FIG. 6Method of attaching the hydraulic feed control unit onto the MK III control head.
FIG. 7Method for adjusting the hydraulic feed control rate.
AIRMACHINES.COM
6
FIG. 8Pneumatic control head assembly showing the separate inlet ports for the feed
cylinder and motor air supply. Pneumatic units are shipped with dual porting unless single air supply is specified. Electric units require only one connection for the feed
cylinder. Ports are shown fitted with 1/4" NPT port adaptors.
FIG. 9Pneumatic control head showing how the unit can be adapted for single air
connection feeding both the feed cylinder and motor.Note seal body and filter plug.
AIRMACHINES.COM
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FIG. 10Pneumatic control head assembly showing the non-return valves (check valves) fitted in position for the remote forward and return ports. Threaded 1/8" NPT.
FIG. 11Pneumatic control head assembly showing port adapters fitted in the dwell ports so that a pneumatic timer can be used to delay the return stroke for controlled depth
drilling. Threaded 1/8" NPT.
AIRMACHINES.COM
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FIG. 12Pneumatic control head assembly showing the method of adjusting the forward feed
rate. Clockwise rotation reduces the feed rate and counter clockwise rotation increases the feed rate.
FIG. 13Pneumatic control head assembly showing the method of adjusting the return feed
rate. Clockwise rotation reduces the feed rate and counter clockwise rotation increases the feed rate.
AIRMACHINES.COM
9
FIG. 14Pneumatic control head assembly with the spool valve partially removed from the
brass bush. (Note: The spool valve is the only moving part in the control head assembly and it is mounted on “O” rings.
FIG. 15Pneumatic control head assembly with the spool valve and brass bush removed.
(Note: The brass bush is also mounted on “O” rings and can be easily replaced as a spare part. To replace the bush on competitive tools requires that the expensive
control head is also replaced.
AIRMACHINES.COM
10
FIG. 16Pneumatic control head assembly with the two needle valve cartridges removed showing
their component parts. (Note: If needle valve seat is damaged, only the cartridge requires replacement – not the whole control head as on competitive tools.
FIG. 17MK III Unit with the quill pulled forward to show the method of changing the speed
of tools without stripping down the complete unit.
AIRMACHINES.COM
11
FIG. 18Feed stroke adjustment screw positioned above auto return valve. Stroke range
5/16" thru 3" (8mm - 75mm). Note: The first 5/16" of stroke is used by the soft start control for the air motor. See detail below.
FIG. 19Built in soft start feature incorporates four rows of holes within the feed tube to
gradually supply air to the motor over the first 5/16" of stroke. This protects rotor blades and gear boxes from sudden shock loads, extending the life of the tool.
AIRMACHINES.COM
12
FIG
. 20
Str
ip d
ow
n o
f t
he
pn
eu
ma
tic
mk
III b
ro
om
ati
c in
to s
ub
-as
se
mb
lie
s s
ho
win
g t
he
sim
pli
cit
y o
f c
on
str
uc
tio
n.
Material
Drill D
iameter
1/16
Alum
inum
Brass
Cast Iron
/ Mild
Steel
Steel M
edium
Carbon
(250
BHN)
Stainless S
teel
304
Plastic / Woo
d
NOTE
: Ta
ble
show
s ave
rage
settin
gs a
nd is
inte
nded
as a
gui
de o
nly.
Adj
ust f
or to
ol li
fe, p
rodu
ctio
n ra
te, h
ardn
ess o
f mat
eria
l, an
d ty
pe o
f too
l use
d. Th
e cu
ttin
g to
ol m
anuf
actu
rer s
houl
d be
abl
e to
pro
vide
gui
delin
es fo
r a sp
ecifi
c ap
plicat
ion.
SELE
CTIN
G A
VERA
GE
DRILLING FEE
DS A
ND
SPEE
DS
1.6
2.4
3.2
4.8
6.4
7.9
9.5
11.1
12.7
14.3
15.9
17.5
19.1
20.6
3/32
1/8
3/16
1/4
5/16
3/8
7/16
1/2
9/16
5/8
11/16
3/4
13/16
RPM
FEED
/IPR
HP
TH
RUST (LBS)
SFM
RPM
FEED
/IPR
HP
TH
RUST (LBS)
SFM
RPM
FEED
/IPR
HP
TH
RUST (LBS)
SFM
RPM
FEED
/IPR
HP
TH
RUST (LBS)
SFM
RPM
FEED
/IPR
HP
TH
RUST (LBS)
SFM
RPM
FEED
/IPR
HP
TH
RUST (LBS)
SFM
12224
.001
.03
11
200
9168
.001
.03 6
150
4456
.001
.04
12
70
3667
.001
.05
19
60
3183
.001
.03
15
50
6366
.001
.03 9
100
6112
.002
.06
25
200
4075
.003
.17
35
200
3056
.003 .
22
45
200
2445
.004
.32
65
200
2037
.005
.44
96
200
1746
.006
.57
135
200
1528
.007
.71
180
200
1358
.007
.87
238
200
1222
.008
1.07
238
200
1111
.008
1.23
300
200
1018
.010
1.42
365
200
940
.011
1.68
440
200
8489
.001
.04
17
200
6367
.001
.03
11
150
4584
.002
.04
17
150
3056
.003
.09
33
150
2292
.004
.18
55
150
1834
.005
.27
80
150
1528
.005
.34
105
150
1309
.006
.46
134
150
1146
.007
.52
167
150
1013
.008
.78
200
150
917
.009
.94
245
150
834
.010
1.18
290
150
764
.011
1.28
330
150
705
.011
1.45
380
150
2971
.002
.04
24
70
2139
.002
.06
39
70
1425
.004
.12
69
70
1070
.005
.21
135
70
856
.006
.28
165
70
713
.007
.36
225
70
611
.008
.43
295
70
535
0.10
.55
345
70
475
0.10
.76
430
70
428
.012
.90
570
70
389
.013
1.05
650
70
357
.014
1.20
700
70
329
.015
1.40
795
70
2546
.002
.09
35
60
1835
.002
.13
62
60
1220
.003
.24
105
60
917
.004
.43
150
60
733
.006
.48
198
60
611
.006
.66
260
60
524
.008
.99
333
60
458
.008
1.24
395
60
408
.010
1.50
460
60
367
.011
1.85
615
60
334
.012
2.10
765
60
310
.013
2.25
880
60
290
.013
2.45
1050
60
2122
.001
.05
29
50
1528
.002
.08
54
50
1018
.002
.10
105
50
764
.003
.14
255
50
611
.004
.23
342
50
509
.005
.35
435
50
436
.005
.41
540
50
382
.006
.56
650
50
340
.007
.74
774
50
305
.007
.82
900
50
278
.008
1.0
1035
50
255
.009
1.3
1139
50
235
.009
1.4
1240
50
4244
.002
.03
14
100
2037
.003
.03
40
100
3056
.002
.03
20
100
1528
.004
.05
58
100
1224
.004
.06
68
100
1018
.005
.08
89
100
873
.006
.12
112
100
764
.007
.16
142
100
679
.008
.20
160
100
611
.009
.25
176
100
555
.010
.31
188
100
509
.011
.37
219
100
470
.012
.44
231
100
4705 Belmont AvenueYoungstown, OH 44505 USA
Phone: +1-330-759-1620Fax: +1-330-759-9906
Email: info@airmachines.comWeb: www.airmachines.com