COMPACT 75
COMPACT 75
Operator’s manual for drilling machine
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5. OPERATING INSTRUCTIONS
The drilling machine has a spindle with Morse Taper MT3 to use twist drill (by using the
reduction adapter if necessary) and annular c
utters. Arbor mark AMT is mounted in spindle conical
taper to fix annular cutters.
Milling cutter (2) is located inside arbor body (1) and is fastened with screws (3). While fastening the
cutter in the socket, be aware that screws should be screwed tight so that they could not come
unscrewed. It is important to position the cutter in relation to the socket in such a way that fixing flats
on the cutter shank are positioned opposite to the fixing screws (3). Both fastening screws (3) should
be used to fasten
the cutter. Pilot (5) is located inside the cutter. It makes it easier to position milling
cutter over centre of a planned hole. During drilling as the cutter goes deep into steel, the pilot moves
back into the arbor body and tightens discharge spring (4).
That spring ejects slug which is a by-
product of milling a hole with a centre free cutter (Drawing No. 3).
Drawing No 3
Types of holes that can be done with a milling cutter
.
Drawing No 2.
Principle of milling cutter’s work