HEIDENHAIN SW 548328-05 DIN Programming - Manual (Page 313)

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313
4.21 Under
c
ut cy
cles
Undercut type K G858
G858 machines an undercut. This cycle performs only one cut at an
angle of 45°. The resulting contour geometry therefore depends on
the tool that is used.
Tool position at the end of the cycle: Cycle starting point
Example: G858
%858.nc
[G858]
N1 T9 G95 F0.23 G96 S248 M3
N2 G0 X60 Z2
N3 G858 X50 Z-30 I0.5
END
Parameters
X Corner point of contour (diameter)
Z Corner point of contour
I Undercut depth
 Undercuts can only be executed in orthogonal, paraxial
contour corners along the longitudinal axis.
 Cutting radius compensation:
Active.
 Oversizes: are not taken into account.