HEIDENHAIN SW 688945-03 - Manual (Page 496)

496 Tool and technology database
7.
3 T
ool data
NC center drill
Select "New tool."
Select special tools.
Select special drilling tools.
Select NC center drill.
The help graphics illustrate the dimensions of the tools.
Special parameters for NC center drills
DV
Hole diameter
BW Point angle
For further tool parameters, see page 489.
For drilling operations with constant cutting speed, the
drilling diameter (DV)
is used to calculate the spindle
speed.