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

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AIRMACHINES.COM

2

FIG

. 2E

lec

tric

MK

III w

ith

typ

e 6

50

mu

lti-s

pin

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dr

illi

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ad

an

d o

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fo

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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

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ad

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tab

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win

sp

ind

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d(C

) T

ype

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(A)

(C)

(B)

(D)

(E)

(F)

(G)

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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

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ow

n o

f t

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to s

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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

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ol  m

anuf

actu

rer  s

houl

d  be

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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  

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.03    6  

150  

4456  

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.04  

 12  

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3667  

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.05  

 19  

 60  

3183  

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 15  

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6366  

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100  

6112  

.002    

 .06  

     25  

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4075  

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.17  

35  

200  

3056  

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22  

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200  

2445  

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.32  

65  

200  

2037  

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96  

200  

1746  

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135  

200  

1528  

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200  

1358  

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.87  

238  

200  

1222  

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1.07  

238  

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1111  

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1.23  

300  

200  

1018  

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1.42  

365  

200  

940  

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1.68  

440  

200  

8489  

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17  

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6367  

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11  

150  

4584  

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3056  

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2292  

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1834  

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.27  

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1528  

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105  

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1309  

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1146  

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167  

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1013  

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.78  

200  

150  

917  

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.94  

245  

150  

834  

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1.18  

290  

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764  

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1.28  

330  

150  

705  

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1.45  

380  

150  

2971  

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2139  

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.06  

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1425  

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 69  

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1070  

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856  

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.28  

165  

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713  

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.36  

225  

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611  

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295  

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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  

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329  

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1.40  

795  

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2546  

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.09  

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1835  

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 62  

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1220  

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.24  

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917  

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.43  

150  

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733  

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.48  

198  

 60  

611  

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.66  

260  

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524  

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.99  

333  

 60  

458  

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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  

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29  

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1528  

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1018  

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764  

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509  

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435  

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436  

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540  

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382  

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.56  

650  

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340  

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.74  

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305  

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.82  

900  

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278  

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1.0  

1035  

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255  

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1.3  

1139  

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235  

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1.4  

1240  

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4244  

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14  

100  

2037  

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40  

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3056  

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1528  

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1224  

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1018  

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873  

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112  

100  

764  

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142  

100  

679  

.008  

.20  

160  

100  

611  

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.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