HEIDENHAIN TNC 640 User Manual page 715

Touch Probe Cycles: Automatic Kinematics Measurement | KINEMATICS GRID (Cycle 453, DIN/ISO: G453,
option)
Q253 Feed rate for pre-positioning? Enter the
traversing speed of the tool in mm/min during
positioning. Input range 0.0001 to 99999.9999;
alternatively FMAX, FAUTO, PREDEF
Q380 Ref. angle in ref. axis? (absolute): Enter
the reference angle (basic rotation) for measuring
the measuring points in the active workpiece
coordinate system. Defining a reference angle can
considerably enlarge the measuring range of an
axis. Input range 0 to 360.0000
Q423 Number of probes? Define the number of
probe measurements with which the TNC is to
measure the calibration sphere in the plane. Input
range: 3 bis 8. Less measuring points increase
speed and more measuring points increase
measurement precision.
Q431 Preset (0/1/2/3)? Define whether the TNC
automatically sets the active preset into the center
of the sphere:
0: Do not set the preset automatically into the
center of the sphere: Preset manually before
cycle start1: Automatically set the preset to the
center of the sphere before measurement (the
active preset is overwritten): Manually pre-position
the touch probe before the cycle start via the
calibration sphere
2: Automatically preset into the center of the
sphere after measurement (the active preset is
overwritten): Preset manually before cycle start
3: Preset before and after measurement into
the center of the sphere (the active preset
is overwritten): Pre-position the touch probe
manually before cycle start via the calibration
sphere
If you have activated the preset before the calibration
(Q431 = 1/3), then move the touch probe by the safety
clearance (Q320 + SET_UP) to a position approximately
above the center of the calibration sphere before the start
of the cycle.
HEIDENHAIN | User's manual for cycle programming | 10/2017
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