HEIDENHAIN TNC 320 (340 55x-03) Touch Probe Cycles - Manual (Page 136)

136
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MEASURE PLANE (touch probe cycle 431,
DIN/ISO: G431)
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 “Running touch probe cycles”
on page 21), 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 Measured value in the touch probe axis