HEIDENHAIN iTNC 530 (60642x-04) - Manual (Page 612)

612 Manual Operation and Setup
14.9 W
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obe
Circle center as preset
With this function, you can set the preset at the center of bore holes,
circular pockets, cylinders, studs, circular islands, etc.
Inside circle:
The TNC probes the inside wall of a circle in all four coordinate axis
directions.
For incomplete circles (circular arcs) you can choose the appropriate
probing direction.
 Position the touch probe approximately in the center of the circle
 Select the touch probe function: Press the PROBING
CC soft key
 Probing: press the NC Start button four times. The
touch probe touches four points on the inside of the
circle
 If you are probing to find the stylus center (only
available on machines with spindle orientation,
depending on MP6160), press the 180° soft key and
probe another four points on the inside of the circle
 If you are not probing to find the stylus center, press
the END key
 Datum
: In the menu window, enter both coordinates of
the circle center, confirm with the SET DATUM soft
key, or write the values to a table (see "Writing the
measured values from touch probe cycles to datum
tables", page 598, or see "Writing the measured
values from touch probe cycles in the preset table",
page 599)
 To terminate the probing function, press the END key
Outside circle:
 Position the touch probe at a position near the first touch point
outside of the circle
 Select the probe direction by soft key
 Start the probing procedure: Press the NC Start button
 Repeat the probing process for the remaining three points. See
figure at lower right
 Datum : Enter the coordinates of the preset and confirm your entry
with the SET DATUM soft key, or write the values to a table (see
"Writing the measured values from touch probe cycles to datum
tables", page 598, or see "Writing the measured values from touch
probe cycles in the preset table", page 599, or see "Storing
measured values in the pallet preset table", page 600)
 To terminate the probe function, press the END key
After the probing procedure is completed, the TNC displays the
current coordinates of the circle center and the circle radius PR.
X
Y
X+ X–
Y+
Y–
X
Y
X+
X–
Y+
Y–