HEIDENHAIN CNC Pilot 4290 - Manual (Page 99)

HEIDENHAIN CNC PILOT 4290 87
Recess or free rotation
B: Outside radius/chamfer; starting point near corner - default: 0
■ B>0: Radius of rounding
■ B<0: Width of chamfer
P: Outside radius/chamfer; starting point distant from corner -
default: 0
■ P>0: Radius of rounding
■ P<0: Width of chamfer
R: Inside radius (in both corners of recess) – default: 0
The CNC PILOT refers the recess depth to the reference
element. The recess base runs parallel to the reference
element.
Thread with undercut G24-Geo
Linear base element with linear thread (external or internal thread;
metric ISO fine-pitch thread DIN 13 Part 2, Series 1) and a subsequent
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
■ Use G24 only if the thread is cut in the definition
direction of the contour.
■ The thread is machined with G31.
4.5 Geometry Commands