Nitto Kohki LO-3550, Instruction Manual

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14
Blade stay
Blade
Pull the blade away
Clearance 0.5 〜 0.8mm
Fig. 19
6 MACHINE OPERATION
WARNING
●
Always Wear Safety Glasses.
●
Always Wear Hearing Protection.
●
Wear respiratory protective equipment.
●
Never touch the mounted cutter and the
rotating parts of the machine such as the
S p i n d l e A r b o r a f t e r t h e p o w e r c a b l e i s
connected to power source.
6-1. Start and Stop
(1) Magnet ON
Turn on the power switch to activate magnetic
power. (Fig. 20).
(2) Drill Motor ON
Turn on the start switch to run the drill motor.
(Fig. 20)
(3) Stop
Turn off the stop switch to stop the drill motor.
Turn off the power switch to deactivate magnet
power, and make complete stop.
ON OFF
LOAD
Stop switch
OVER LOAD
OFF
OFF
ON
ON
MAGNET
Power switch
Start switch
Fig. 20
6-2. How to Use the Feed Handle (Fig. 21)
The socket part of handle has ratchet mechanism.
You do not have to remove the handle from the
handle shaft every time in order to change the
position.
Pulling the handle in the direction of arrow causes
the handle to disengage from the handle shaft.
While disengaging from the shaft, the handle can
be turned to the next lock position. Handle lock
positions are
fi xed at each 60° pitch.
Handle position can be
changed without moving
up or down the cutter.
Pulling the handle in the
direction of arrow causes
the handle to disengage
from the handle shaft.
Fig. 21
6-3. Drilling Oblong Hole
CAUTION
Always drill slowly.
Drill round holes in the order of ① , ② , ③ to get an
oblong hole. For the steps ② and ③ , take care so
that the cutter may not be fed into the work piece
with so much force.
File away any remaining excesses. See Fig. 22.
Spacing of round holes should be so arranged that
the Pilot Pin will always hit the material yet to be
machined.
1 2 3
File away any remaining excesses.
Fig. 22
6-4. Drill Stacked Plates
CAUTION
●
When drilling stacked plates, fi x the steel plates
so that the gap between the plates must be less
than or equal to 1mm.
●
Use special one-touch Jetbroach Cutters
exclusively designed for stacked plates.
6-5. Drilling Procedure
CAUTION
(1) Punch Mark
Always a large punch mark should be stamped
quite vertical to the work piece. Be careful to get
the precise position for the punch mark since it
serves as the drilling center guide. (Fig. 23)