HEIDENHAIN CNC PILOT 640 - Thread with Undercut G24-Geo

DIN/ISO programming | Form elements of turning contour
4
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
257
Thread with undercut G24–Geo
G24 defines a linear basic element with a longitudinal thread and
subsequent thread undercut (DIN 76). The thread is an outside or
inside thread (metric ISO fine-pitch thread DIN 13 Part 2, Series 1).
Parameter:
F: Thread pitch
I: Undercut depth
K: Underc. breadth
Z: Final point of the undercut
FP: Do not machine the element (only necessary for
TURN PLUS)
1: Yes
BE, BF, BD, BP and BH.
Further information: "Machining attributes for form elements",
Page 246
Program G24 only in closed contours
The thread is machined with G31
Example: G24-Geo
. . .
FINISHED PART
N1 G0 X40 Z0
N2 G1 X40 BR-1.5
Starting point for thread
N3 G24 F2 I1.5 K6 Z-30
Thread with undercut
N4 G1 X50
Next transverse element
N5 G1 Z-40
. . .