Kaltenbach KPS 501, Manual

Page: 124 / 268

KPS SERIES
Technical Documentation
M-UK-KPS--06
11/02/03 Page 124 of 138
KALTENBACH
6.2.17 Drill Cooling
6.2.17.1
Micro lubrication system
Principle of working
The cooling of the drill is in mainly obtained by heat transfer to the drill-chips (for this
reason, the drill feed should therefore never be too low). The compressed air flowing
through the drill will cool the drill tool, the oil is mainly added to get a lubrication and
much less for a cooling effect.
The life of the drill tool is not effected if it is not directly foreseen with oil, of course
under the condition that the drill is correctly sharpened and the tool is used with the
correct feed and rpm.
Experiences
-
When activating the micro-lubrication system after a new drill has been
inserted in the machine, it takes time before it is visual that the oil is coming
out of the drill
-
If the drill is taken out, the customer experiences that accumulated oil comes
out of the drill holder
-
It is thought that the micro-lubrication system is a mist-spray system
Answers
-
In the standard drill adapters which are available on the market, both for
automatic tool change and for manual change (ISO40), openings have been
incorporated in order to release the drill from the adapter with a tool. These
openings, which are of course necessary, will fill with oil due to the
centrifugal force of the revolving drill. Only after this opening has been filled
completely with oil, does the full flow-through of oil to the drill follow. Once the
drill is released, this accumulated oil escapes.
-
There will never be a situation that there is a mist spray out of the end of the
drill, even if there is a direct connection of the oil feed tube to the drill.
-
A micro-lubrication system is a system producing drops of oil, which will give
only a oily air flow out of the drill, if the unit is correctly adjusted (minimal oil
volume and maximal air pressure).