HEIDENHAIN TNC 620 (340 56x-02) Cycle programming - Manual (Page 275)

HEIDENHAIN TNC 620 275
12.5 T
O
LERANCE (Cy
c
le 32, DIN/ISO: G62)
Please note while programming:
With very small tolerance values the machine cannot cut
the contour without jerking. These jerking movements are
not caused by poor processing power in the TNC, but by
the fact that, in order to machine the contour element
transitions very exactly, the TNC might have to drastically
reduce the speed.
Cycle 32 is DEF active which means that it becomes
effective as soon as it is defined in the part program.
The TNC resets Cycle 32 if you
„ Redefine it and confirm the dialog question for the
tolerance value
with NO ENT
„ Select a new program with the PGM MGT key
After you have reset Cycle 32, the TNC reactivates the
tolerance that was predefined by machine parameter.
In a program with millimeters set as unit of measure, the
TNC interprets the entered tolerance value in millimeters.
In an inch program it interprets it as inches.
If you transfer a program with Cycle 32 that contains only
the cycle parameter Tolerance value T, the TNC inserts
the two remaining parameters with the value 0 if required.
As the tolerance value increases, the diameter of circular
movements usually decreases. If the HSC filter is active
on your machine (ask your machine manufacturer, if
necessary), the circle can also become larger.
If Cycle 32 is active, the TNC shows the parameters
defined for Cycle 32 on the CYC tab of the additional status
display.