HEIDENHAIN TNC 620 (340 56x-02) Cycle programming - Manual (Page 373)

HEIDENHAIN TNC 620 373
16.4 MEA
S
URE ANGLE (Cy
c
le 420, DIN/ISO: G420)
16.4 MEASURE ANGLE (Cycle 420,
DIN/ISO: G420)
Cycle run
Touch Probe Cycle 420 measures the angle that any straight surface
on the workpiece describes with respect to the reference axis of the
working plane.
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 defined traverse direction.
2 Then the touch probe moves to the entered measuring height and
probes the first touch point at the probing feed rate (column F).
3 Then the touch probe moves to the next starting position 2 and
probes the second position.
4 The TNC returns the touch probe to the clearance height and saves
the measured angle in the following Q parameter:
Please note while programming:
X
Y
1
2
Parameter number Meaning
Q150 The measured angle is referenced to the
reference axis of the machining plane.
Before a cycle definition you must have programmed a
tool call to define the touch probe axis.
If touch probe axis = measuring axis, set Q263 equal to
Q265
if the angle about the A axis is to be measured; set
Q263 not equal to Q265 if the angle is to be measured about
the B axis.