HEIDENHAIN CNC Pilot 4290 Pilot - Manual (Page 62)

62
Undercut angle for undercuts according to DIN 509 E and F: 15°
Transverse angle for an undercut according to DIN 509 F: 8°.
where:
I = depth of undercut
K = width of undercut
R = undercut radius
P = depth of end face
Undercut DIN 509 F Simple t
u
rning cy
cles
Undercut according to DIN 509 F
Diameter I K R P
† 18
0.25 2 0.6 0.1
> 18 – 80 0.35 2.5 0.6 0.2
> 80 0.45 4 1 0.3
Undercut according to DIN 509 E
Diameter I K R
† 18 0.25 2 0.6
> 18 – 80 0.35 2.5 0.6
> 80 0.45 4 1