Kaltenbach KPS Series, Manual

Page: 120 / 268

KPS SERIES
Technical Documentation
M-UK-KPS--06
11/02/03 Page 120 of 138
KALTENBACH
6.2.12 Drills General Information
Next to the important fact of having a suitable drilling machine, it is even more
important to have the right drills with the correct method of grinding.
A high-quality drill, which has been grinded in the correct way, possesses / brings the
following features:
-
a nice and clean surface of the hole
-
a round- shaped hole (not triangular)
-
minimum amounts of (small) chips
-
long usage-time
-
optimum feed rates possible (gain in the production)
-
optimum cutting speed (gain in the production)no drill-resonance
-
Short chips
6.2.13
Drill Types and qualities
The best drills to purchase for drilling steel profiles are normal spiral drills; these should
have the quality HSS or better.
For the optimum lubrication and cooling of the drills, it is recommended to use drills
with internal cooling channels. When using this type of drill, it has to be made sure
that the drilling machine is suitable and has a facility for these tools, e.g. a micro
dosage system.
Advantages of using the drills with cooling channels are:
-
longer usage-time of the drill
-
better holes in the profiles
-
no pollution of work or environment (because of mist cooling)
NOTICE
When the drills with cooling channels are not used, the dosage
system should be switched off.