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drill slides away in the drill holder, a slight burr
occurs on the drill shank, which makes centric
clamping impossible. A burr which occurs in this
way must in any case be removed by grinding.
Clamping the workpiece
Fig. G
The drill bench and the footplate of the bench drill
are provided with grooves for fastening clamping
tools. Always clamp the workpiece in the machine
clamp or other clamping tools. In this way you will
prevent accidents and even increase the drilling
accuracy because the workpiece is in a fixed
position.
Adjusting the bench
The drill bench is fastened to the drill column
and can be adjusted in height after loosening the
fastening handle (6). Adjust the bench in such a
way that there is still enough space between the
top of the workpiece and the point of the drill. You
can also swivel the bench sideways, if you wish to
clamp a workpiece directly onto the footplate.
Fig. I
For slanted drilling and with a slanted supporting
surface of the workpiece the bench can be
swivelled. For this purpose loosen the hexagonal
screw (20) on the hinge point of the bench and
remove the centring. Swivel the bench (19) to the
desired position. Then screw down the hexagonal
screw (20) properly using a wrench.
Number of revolutions, speed of rotation, supply
The supply - the feed motion of the drill - takes
place by hand on the 3-armed drill lever. The
speed of rotation is determined by the number of
revolutions of the drill spindle and by the diameter
of the drill. The correct choice of supply and the
number of revolutions of the drill spindle are the
deciding factors for the lifespan of the drill. The
following applies as a basic rule: with a larger
diameter of the drill the number of revolutions
must be adjusted lower; the greater the firmness
of the workpiece, the greater the cutting pressure
must also be.
In order not to overheat the drill in this case, the
supply and speed of rotation must be lowered
at the same time. In addition, the drill must be
cooled with drill oil. For thin plates, quite large
drillings must be carried out carefully with little
8
supply and little cutting pressure, so as to get
a precise result and so that the drilling remains
the correct size. For deep drilling (larger than 2 x
the diameter of the drill) the discharge of chips is
more difficult and the temperature of the drill is
higher. Therefore lower the supply and the number
of revolutions and ensure a better discharge of
chips by regularly pulling back the drill. For drilling
with a greater diameter than 8 mm, pre-drilling
must take place, so that early wear of the drill -
main cutting edge can be avoided and so that the
drilling point is not too heavily loaded.
5. MAINTENANCE
Make sure that the machine is not live
when carrying out maintenance work on
the motor.
This machine has been designed to operate
over a long period of time with a minimum of
maintenance. Continuous satisfactory operation
depends upon proper machine care and regular
cleaning.
Cleaning
Keep the ventilation slots of the machine clean to
prevent overheating of the motor. Regularly clean
the machine housing with a soft cloth, preferably
after each use. Keep the ventilation slots free from
dust and dirt. If the dirt does not come off use a
soft cloth moistened with soapy water. Never use
solvents such as petrol, alcohol, ammonia water,
etc. These solvents may damage the plastic parts.
Please clean the tool immediately after use.
Lubrication
Every bearing in the drill press has been pre-
lubricated in the factory. Further lubrication is
unnecessary. From time to time, you should
grease the racks and pinions, the table lifting
mechanism, the spindle and the splines of the
hollow shaft. Open the drive belt guard and squirt
a little oil onto the spindle shaft. Do not allow any
oil to touch the drive belt!
Faults
Should a fault occur, e.g. after wear of a part,
please contact the service address on the
warranty card. In the back of this manual you find
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