HEIDENHAIN iTNC 530 (340 49x-04) Touch Probe Cycles - Manual (Page 63)

HEIDENHAIN iTNC 530 63
3.1 Measur
ing W
o
rk
piece Misalignment
 Center in 1st axis Q321 (absolute value): Center of
the hole in the reference axis of the working plane.
 Center in 2nd axis Q322 (absolute value): Center of
the hole in the minor axis of the working plane. If you
program Q322 = 0, the TNC aligns the hole center to
the positive Y axis. If you program Q322 not equal to
0, then the TNC aligns the hole center to the nominal
position (angle of the hole center).
 Nominal diameter Q262: Approximate diameter of the
circular pocket (or hole). Enter a value that is more
likely to be too small than too large.
 Starting angle Q325 (absolute): Angle between the
reference axis of the working plane and the first touch
point.
 Stepping angle Q247 (incremental): Angle between
two measuring points. The algebraic sign of the
stepping angle determines the direction of rotation
(negative = clockwise) in which the touch probe
moves to the next measuring point. If you wish to
probe a circular arc instead of a complete circle, then
program the stepping angle to be less than 90°.
X
Y
Q322
Q321
Q262
Q325
Q247
The smaller the angle, the less accurately the TNC can
calculate the circle center. Minimum input value: 5°.