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14
Touch Probe Cycles: Automatic Datum Setting
14.9 DATUM FROM INSIDE OF CORNER (Cycle 415, DIN/ISO: G415)
14.9
DATUM FROM INSIDE OF CORNER
(Cycle 415, DIN/ISO: G415)
Cycle run
Touch Probe Cycle 415 finds the intersection of two lines and
defines it as the datum. If desired, the TNC can also enter the
intersection into a datum table or preset table.
1 Following the positioning logic, the TNC positions the touch
probe at rapid traverse (value from FMAX column) (see
"Executing touch probe cycles", page 299) to touch point
figure at upper right) that you have defined in the cycle. The
TNC offsets the touch probe by the safety clearance in the
direction opposite to the respective traverse direction.
2 Then the touch probe moves to the entered measuring height
and runs the first probing process at the probing feed rate
(column F). The probing direction is derived from the number by
which you identify the corner.
1 Then the touch probe moves to the next starting position
from there probes the second position.
2 The TNC positions the probe to starting point
starting point
4
3 Finally the TNC returns the touch probe to the clearance height
and processes the determined datum depending on the cycle
parameters Q303 and Q305 (see "Characteristics common to all
touch probe cycles for datum setting", page 326) and saves the
coordinates of the determined corner in the Q parameters listed
below.
4 If desired, the TNC subsequently measures the datum in the
touch probe axis in a separate probing.
Parameter number
Q151
Q152
356
to probe the third and fourth touch points.
Meaning
Actual value of corner in reference axis
Actual value of corner in minor axis
1
(see
2
and
3
and then to
HEIDENHAIN | TNC 320 | User's manual for cycle programming | 9/2016
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