Unibor UA5000 Autofeed - Manual (Page 4)

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M ANUAL FEED A
UTO
F
EED
F OR MANUAL CUTTING :-
Start the drill as described above. Ensure that
the capstan handles are pulled out. Lower the
cutter to the surface by turning the handle; and
with light pressure cut an initial groove. Increase
pressure until motor is loaded then maintain
steady pressure until cut is complete.
• When the cut is complete the slug will be
ejected from the cutter. Switch off the machine.
C AUTION - The ejected slug will be hot
and sharp, do not touch with bare hands.
If the slug is not ejected by the pilot pin, the
slug should be removed by using a thin punch on
the flange of the slug between the teeth of the
cutter.
NOTE:–
• Applying too much pressure will not speed
the cut, it will reduce the life of the tool and may
cause damage to the motor.
• If swarf becomes blue in colour then more
cutting oil is required.
• If the power is interrupted during the cut, the
machine must be reset before the motor will
restart. The power switch must be manually set
to ‘Off’ and then back to ‘On’ to reset.
Autofeed
Manual feed
F OR AUTO-FEED CUTTING :-
Once the drill has been aligned with the centre
mark, start the drill as described above. Ensure
that the capstan is pushed in. The machine will
then feed through the work-piece automatically
and return when the cut is complete.
C AUTION - Once the machine has started
autofeeding, do not touch the capstan handles
until the cut has finished
• When the cut is complete the slug will be
ejected from the cutter, and the motor will stop.
Pull the capstan handles outwards and turn the
capstan to raise the cutter out of the work piece
Switch off the magnet.
N OTES FOR C UTTING & A UTO - FEEDING :
• For elongated holes, laminated plates or
where the exit side is slanted or radiussed,
manual feed MUST be used .
• In certain circumstances, if the drill motor
has reached the upper or lower limit, it may not
be possible to start the motor. If this occurs, the
capstan should be rotated to allow the slide to
raise or lower in order to reset the switch.
• When the machine is being used manually,
it is not possible to engage the auto-feed
mechanism when cutting has already started. If
auto-feed is required the drill motor should be
raised to it’s uppermost position in order for the
automatic cycle to be reset and start the cycle
from the beginning.
• If there is insufficient cutting force during
cutting, the machine will continue traversing
until the bottom of the arbor is 5mm above the
work surface (lower limit). The machine will then
return to the upper limit position.
DURING CUTTING, ALWAYS ENSURE THAT CUTTING GUARDS ARE IN PLACE.
Ensure that the machine is disconnected from the
power supply before attempting to maintain the
machine or to fit or change the cutter.
I NSERT P ILOT P IN .
The pilot pin is used to align the cutter and eject
the slug on completion of the cut.
Ensure the pilot is the correct length and diameter
for the cutter being used and is sharp.
Slide the pilot through the hole in the centre of
the cutter shank.
F IT THE C UTTER .
The cutter shank has two flats that must be
aligned with the grub screws in the arbor.
Insert the cutter shank into the arbor. The screws
must be tightened (using the 4mm Allen key
supplied) evenly so that the cutter is prevented
from moving. (A cutter with a shank diameter of
19.05mm/¾” and cutting diameter of no larger
than 50mm/1¾” must be used).
S ELECT MOTOR SPEED .
Dependent on the size of the cutter being used,
move the speed selector on the motor gearbox
to slow or fast. As a general guide, fast is used
for cutters up to 30 -32mm, and slow for the
larger sizes.
C UTTING O IL .
For optimum performance and tool life, use only
the concentrated Ecocool cutting oil supplied.
This should be diluted with clean water in the
proportions of 20:1, the bottle supplied makes
1 litre.
Fill the integral tank on the machine and open the
tap to supply oil to the cutter, the flow should be
sufficient to keep the cutter and swarf wet all
through the cut, preventing the overheating that
increases cutting time and shortens cutter life;
and ensuring that the slug is ejected cleanly.
If the cutting surface is vertical or steeply
inclined, then cutting paste, gel or foam should
be used.
P REPARATION
• Connect the machine to the power
source and turn on the supply.
• Mark the centre of the required hole to be
drilled with a centre punch and hammer.
P OSITION THE M ACHINE .
Ensure that the workpiece is clean and flat.
If foreign matter (swarf, rust, etc.) is caught under
the magnet, there is a danger of the machine
moving on the workpiece.
Position the machine by aligning the pilot with
the centre mark.
N OTE : Ensure that the safety chain is fitted
before drilling.
W ARNING - ALWAYS use the safety
guard and wear safety goggles while using this
machine.
E NERGISE THE M AGNET .
Operate the rocker switch
C AUTION
Check the machine is firmly attached to the
workpiece.
S TART THE M OTOR .
Press the switch
C AUTION - Do not touch rotating parts
D RILLING