Please Note While Programming - HEIDENHAIN TNC 640 User Manual

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Touch Probe Cycles: Automatic Kinematics Measurement | MEASURE KINEMATICS (Cycle 451, DIN/ISO:

Please note while programming:

Before starting the cycle make sure that M128 or
FUNCTION TCPM is deactivated.
Cycle 453, as with 451 and 452, is exited with an active
3-D ROT in automatic mode that matches the position of
the rotary axes.
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 preset in the
center of the calibration sphere and activate it, or you
define the input parameter Q431 correspondingly to 1 or
3.
If machine parameter mStrobeRotAxPos (No. 204803)
is not equal to –1 (M function positions the rotary axis),
only start a measurement if all rotary axes are at 0°.
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 the
whichever is smaller. The TNC always moves the rotary
axes at positioning feed rate Q253, while the probe
monitoring is inactive.
The TNC ignores cycle definition data that applies to
inactive axes.
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 an emergency the most recently active kinematic
configuration can be restored.
For angle optimization, the machine manufacturer must
have adapted the configuration correspondingly. Angle
optimization can be particularly useful on small, compact
machines.
Compensation of the angle is only possible with option
#52 KinematicsComp.
If the kinematic data attained in the Optimize mode are
greater than the permissible limit (maxModification),
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
maxDevCalBall (No. 204802) the TNC shows an error
message and ends the measurement.
Programming in inches: The TNC always records the log
data and results of measurement in millimeters.
694
FMAX value,
HEIDENHAIN | User's manual for cycle programming | 10/2017
G451, option)