HEIDENHAIN CNC Pilot 4290 Pilot - Manual (Page 15)

15
Thread with undercut G24-Geo
G24 defines a linear base element, a linear thread (external or internal
thread; metric ISO fine-pitch thread DIN 13 Part 2, Series 1) and a sub-
sequent thread undercut (DIN 76).
Calling the contour macro:
N..G1 X..Z..B.. /Starting point for thread
N..G24 F..I..K..Z.. /Contours for thread and undercut
N..G1 X.. /Next surface element
Parameters
F:
Thread pitch
I: Depth of undercut (radius)
K: Width of undercut
Z: End point of the undercut
• G24 can be used only if the thread is cut in the direction of
contour definition.
• The thread is machined with G31.
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