5. After the belt is positioned on the
desired steps the motor and
spindle pulleys, push motor (D)
Fig. 14, away from the drill press
head until the belt is properly
tensioned and tighten tension knob
(B). The belt should be just tight
enough to prevent slipping.
Excessive tension will reduce the
life of the belt, pulleys and
bearings. Correct tension is
obtained when the belt (C) can be
flexed about 1 inch out of line
midway between the pulleys using
light finger pressure.
Operation
Your drill press is to be used with drill
bits with a shank 1/2 inch or less in
diameter. The following will give the
inexperienced operator a start on
common drill press operations. Use
scrap material for practice to get a feel
of the machine before attempting
regular work.
Installing and removing drill press
1. Disconnect machine from power
source.
2. Insert smooth end of drill bit (A)
Fig. 15, into chuck (B), as far as it
will go, and then back the bit out
1.5mm, or up to the flutes for
small bits.
3. Make certain that the drill bit (A)
Fig. 15, is centered in the chuck
(B) before tightening the chuck
with the key (C).
4. Turn the chuck key (C) Fig. 15,
clockwise to tighten and
counterclockwise to loosen the
chuck jaws.
Fig. 15
5. Tighten all three chuck jaws to
secure the drill bit sufficiently so
that it does not slip while drilling.
6. Make sure chuck key (C) Fig. 15, is
removed from chuck before
starting drill press.
Correct drilling speeds
Factors which determine the best
speed to use are: kind of material
being worked, size of hole, type of
drilling cutter, and quality of cut
desired.
Warning: Use the recommended
speed for the drill press bit and
workpiece material.
15