HEIDENHAIN iTNC 530 (340 49x-06) Cycle programming - Manual (Page 484)

484 Touch Probe Cycles: Automatic Kinematics Measurement
1
8
.5 PRESET COMPENSA
TION (Cy
c
le 452, DIN/ISO: G452, Option)
Please note while programming:
In order to be able to perform a preset compensation, the
kinematics must be specially prepared. The machine tool
manual provides further information.
Note that all functions for tilting in the working plane are
reset. M128 or FUNCTION TCPM are deactivated.
Position the calibration sphere on the machine table so
that there can be no collisions during the measuring
process.
Before defining the cycle you must set the datum in the
center of the calibration sphere and activate it.
For rotary axes without separate position encoders, select
the measuring points in such a way that you have to
traverse a distance of 1° to the limit switch. The TNC
needs this distance for internal backlash compensation.
For the positioning feed rate when moving to the probing
height in the touch probe axis, the TNC uses the value
from cycle parameter Q253 or machine parameter
MP6150, whichever is smaller. The TNC always moves
the rotary axes at positioning feed rate Q253, while the
probe monitoring is inactive.
If the kinematic data attained in the optimize mode are
greater than the permissible limit (MP6600), the TNC
shows a warning. Then you have to confirm acceptance of
the attained value by pressing NC start.
Note that a change in the kinematics always changes the
preset as well. After an optimization, reset the preset.
In every probing process the TNC first measures the
radius of the calibration sphere. If the measured sphere
radius differs from the entered sphere radius by more than
you have defined in machine parameter MP6601, the TNC
shows an error message and ends the measurement.
If you interrupt the cycle during the measurement, the
kinematic data might no longer be in the original condition.
Save the active kinematic configuration before an
optimization with Cycle 450, so that in case of a failure the
most recently active kinematic configuration can be
restored.
Programming in inches: The TNC always records the log
data and results of measurement in millimeters.