Datum From Inside Of Rectangle (Cycle 410, Din/Iso: G410); Cycle Run - HEIDENHAIN TNC 320 User's Manual For Cycle Programming

DATUM FROM INSIDE OF RECTANGLE (Cycle 410, DIN/ISO: G410) 14.4

14.4 DATUM FROM INSIDE OF
RECTANGLE (Cycle 410,
DIN/ISO: G410)

Cycle run

Touch Probe Cycle 410 finds the center of a rectangular pocket and
defines its center as datum. If desired, the TNC can also enter the
coordinates into a datum table or the 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 1. The
TNC calculates the touch points from the data in the cycle and
the safety clearance from the SET_UP column of the touch
probe table.
2 Then the touch probe moves to the entered measuring height
and runs the first probing process at the probing feed rate
(column F).
3 Then the touch probe moves either paraxially at measuring
height or at clearance height to the next starting point
probes the second touch point.
4 The TNC positions the probe to starting point
starting point 4 to probe the third and fourth touch points.
5 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).
6 If desired, the TNC subsequently measures the datum in the
touch probe axis in a separate probing and saves the actual
values in the following Q parameters.
Parameter number
Q151
Q152
Q154
Q155
HEIDENHAIN | TNC 320 | User's manual for cycle programming | 9/2016
3 and then to
Meaning
Actual value of center in reference axis
Actual value of center in minor axis
Actual value of length in the reference
axis
Actual value of length in the minor axis
2 and
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