HEIDENHAIN ITNC 530 - CYCLE PROGRAMMING User Manual page 483

If it is possible to leave the calibration sphere clamped to the machine
table during machining, you can compensate for machine drift, for
example. This procedure is also possible on a machine without rotary
axes.
1 Clamp the calibration sphere and check for potential collisions.
2 Set the preset in the calibration sphere.
3 Set the preset on the workpiece, and start machining the
workpiece.
4 Use Cycle 452 for preset compensation at regular intervals. The
TNC measures the drift of the axes involved and compensates it in
the kinematics description.
Parameter number Meaning
Q141 Standard deviation measured in the A axis
(–1 if axis was not measured)
Q142 Standard deviation measured in the B axis
(–1 if axis was not measured)
Q143 Standard deviation measured in the C axis
(–1 if axis was not measured)
Q144 Optimized standard deviation in the A axis
(–1 if axis was not measured)
Q145 Optimized standard deviation in the B axis
(–1 if axis was not measured)
Q146 Optimized standard deviation in the C axis
(–1 if axis was not measured)
HEIDENHAIN iTNC 530 483