HEIDENHAIN TNC 620 (340 56x-02) Cycle programming - Manual (Page 405)

HEIDENHAIN TNC 620 405
16.13 MEA
S
URE PLANE (Cy
c
le 431, DIN/ISO: G431)
16.13 MEASURE PLANE (Cycle 431,
DIN/ISO: G431)
Cycle run
Touch Probe Cycle 431 finds the angle of a plane by measuring three
points. It saves the measured values in system parameters.
1 Following the positioning logic (see “Executing touch probe
cycles” on page 283), the TNC positions the touch probe at rapid
traverse (value from FMAX column) to the programmed starting
point
1 and measures the first touch point of the plane. The TNC
offsets the touch probe by the safety clearance in the direction
opposite to the direction of probing.
2 The touch probe returns to the clearance height and then moves in
the working plane to starting point
2 and measures the actual value
of the second touch point of the plane.
3 The touch probe returns to the clearance height and then moves in
the working plane to starting point
3 and measures the actual value
of the third touch point.
4 Finally the TNC returns the touch probe to the clearance height and
saves the measured angle values in the following Q parameters:
X
Z
Y
1
2
3
+X
+Y
A
B
Parameter number Meaning
Q158 Projection angle of the A axis
Q159 Projection angle of the B axis
Q170 Spatial angle A
Q171 Spatial angle B
Q172 Spatial angle C
Q173 to Q175 Measured values in the touch probe axis
(first to third measurement)