HEIDENHAIN TNC 410 ISO Programming - Manual (Page 339)

HEIDENHAIN TNC 410, TNC 426, TNC 430 313
8.1
0
Spe
c
ial Cy
cle
s
TOLERANCE (Cycle G62, not TNC 410)
The TNC automatically smoothes the contour between two path
elements (whether compensated or not). The tool has constant
contact with the workpiece surface. If necessary, the TNC
automatically reduces the programmed feed rate so that the program
can be machined at the fastest possible speed without short pauses
for computing time. As a result the surface quality is improved and the
machine is protected.
A contour deviation results from the smoothing out. The size of this
deviation (tolerance value) is set in a machine parameter by the
machine manufacturer. You can change the pre-set tolerance value
with Cycle G62.
U U U U Tolerance value : Permissible contour deviation in
mm
Example: NC block
N78 G62 T0.05*
Machine and control must be specially prepared by the
machine tool builder for use of this cycle.
Before programming, note the following:
Cycle G62 is DEF active which means that it becomes
effective as soon as it is defined in the part program.
You can reset Cycle G62 by defining it again and confirming
the dialog question after the tolerance value with NO
ENT.. Resetting Cycle 32 reactivates the pre-set tolerance: