HEIDENHAIN TNC 620 (340 56x-02) Cycle programming - Manual (Page 355)

HEIDENHAIN TNC 620 355
15.13 D
A
TUM IN ONE AXIS (Cy
c
le 41
9, DIN/ISO: G41
9
)
15.13 DATUM IN ONE AXIS (Cycle 419,
DIN/ISO: G419)
Cycle run
Touch Probe Cycle 419 measures any coordinate in any axis and
defines it as datum. If desired, the TNC can also enter the measured
coordinate in a datum table or preset table.
1 The TNC positions the touch probe to the programmed starting
point
1 at rapid traverse (value from FMAX column) following the
positioning logic (see “Executing touch probe cycles” on page
283).The TNC offsets the touch probe by the safety clearance in
the direction opposite the programmed probing direction.
2 Then the touch probe moves to the programmed measuring height
and measures the actual position with a simple probing
movement.
3 Finally the TNC returns the touch probe to the clearance height and
processes the determined datum depending on the cycle
parameters Q303 and Q305 (see “Saving the calculated datum”
on page 312).
Please note while programming:
X
Y
Q264
Q263
+
–
– +
Q267
Q272=2
Q272=1
1
SET_UP(TCHPROBE.TP)
+Q320
Before a cycle definition you must have programmed a
tool call to define the touch probe axis.
If you use Cycle 419 several times in succession to save
the datum in more than one axis in the preset table, you
must activate the preset number last written to by Cycle
419 after every execution of Cycle 419 (this is not required
if you overwrite the active preset).