Calibrating Touch Probes; Calibrate Touch Probe Standard G747 - HEIDENHAIN CNC PILOT 640 User Manual

Touch probe cycles | Calibrating touch probes
5.4

Calibrating touch probes

Calibrate touch probe standard G747

Cycle G747 measures with the programmed axis and, depending
on the selected calibration method, calculates the touch probe
adjustment dimension or the ball diameter. If the tolerance values
defined in the cycle are exceeded, the cycle corrects the touch
probe data. The result of the measurement is saved additionally in
the variable #i99.
Further information: "Touch probe cycles for automatic mode",
Page 521
From the current position the touch probe moves along
Cycle run:
the defined measuring axis toward the measuring point. When the
stylus touches the workpiece, the measured value is saved and the
touch probe is positioned back to the starting point.
The control outputs an error message if the touch probe does
not reach any touch point within the defined measuring path.
If a Max. deviation WE was programmed, the measuring point
is approached twice and the mean value is saved as result. If
the difference of the measurements is greater than the Max.
deviation WE, the program run is interrupted and an error message
is displayed.
Parameters:
R: Calibration method
0: change CAx
1: change ball diameter
2: change setup dimension
D: Measuring axis – axis in which the measurement is to be
made
K: Incr. meas path w/ Ri. (the algebraic sign determines the
probing direction) – maximum measuring path for probing
AC: Target pos. nominal value – touch point coordinate
BD: Tolerance position +/ – measurement result range in which
no compensation is applied
WE: Max. deviation – probe twice and monitor the dispersion
of the measured values
F: Measuring feed – feed rate for probing (if nothing is entered,
the measuring feed rate from the touch probe table is used)
If the entered measuring feed rate F is higher than the one in
the touch probe table, the feed rate is reduced to the value from
the touch probe table.
Q: Tool orientation (machine-dependent)
Orient the touch probe in the programmed probing direction
before each probing operation.
P: PRINT outputs
0: OFF – do not display measuring results
1: ON – display measuring results on the screen
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
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