HEIDENHAIN TNC 640 (34059x-05) Cycle programming - Manual (Page 557)

MEASURE PLANE (Cycle 431, DIN/ISO: G431) 16.13
16
TNC 640 | User's Manual Cycle Programming | 1/2015
557
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, the TNC positions the touch
probe at rapid traverse (value from FMAX column) (see
"Executing touch probe cycles", page 444) to the programmed
touch point
1 and measures the first 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 of the plane.
4 Finally the TNC returns the touch probe to the clearance
height and saves the measured angle values in the following Q
parameters:
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)