HEIDENHAIN CNC PILOT 640 - Page 260

DIN/ISO programming | Form elements of turning contour
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HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
Undercut form H (H=8)
If you do not enter W, the Angle will be calculated on the basis of K
and R. The final point of the undercut is then located at the Contour
corner.
Parameter:
H: Cut type H (H = 8)
K: Underc. breadth
R: Radius – Undercut radius (no input: The circular element is not
machined)
W: Angle – Undercut angle
BE, BF, BD, BP and BH.
Further information: "Machining attributes for form elements",
Page 246
Example: Call G25-Geo Form H
. . .
N.. G1 Z-15
Longitudinal element
N.. G25 H8 K4 R1 W30
Type H
N.. G1 X20
Transverse element
. . .
Undercut form K (H=9)
Parameter:
H: Cut type K (H = 9)
I: Undercut depth
R: Radius – Undercut radius (no input: The circular element is not
machined)
W: Angle – Undercut angle
A: Angle to longitudinal axis (default: 45°)
BE, BF, BD, BP and BH.
Further information: "Machining attributes for form elements",
Page 246
Example: Call G25-Geo type K
. . .
N.. G1 Z-15
Longitudinal element
N.. G25 H9 I1 R0.8 W40
Type K
N.. G1 X20
Transverse element
. . .