Measure Rectangle Inside (Cycle 423, Din/Iso: G423, Software Option 17); Cycle Run; Please Note While Programming - HEIDENHAIN TNC 620 User Manual

Touch Probe Cycles: Automatic Workpiece Inspection | MEASURE RECTANGLE INSIDE (Cycle 423, DIN/ISO:
G423, software option 17)
15.7 MEASURE RECTANGLE INSIDE
(Cycle 423, DIN/ISO: G423, software
option 17)

Cycle run

Touch Probe Cycle 423 finds the center, length and width of a
rectangular pocket. If you define the corresponding tolerance
values in the cycle, the TNC makes a nominal-to-actual value
comparison and saves the deviation value in system parameters.
1 Following the positioning logic, the TNC positions the touch
probe at rapid traverse (value from FMAX column) (see
"Executing touch probe cycles", Page 339) 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 to probe the third and fourth touch points.
4
5 Finally the TNC returns the touch probe to the clearance height
and saves the actual values and the deviations in the following
Q parameters:
Parameter number
Q151
Q152
Q154
Q155
Q161
Q162
Q164
Q165

Please note while programming:

Before a cycle definition you must have programmed a
tool call to define the touch probe axis.
If the dimensions of the pocket and the safety clearance
do not permit pre-positioning in the proximity of the
touch points, the TNC always starts probing from the
center of the pocket. In this case the touch probe does
not return to the clearance height between the four
measuring points.
HEIDENHAIN | TNC 620 | User's manual for cycle programming | 10/2017
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
Deviation at center of reference axis
Deviation at center of minor axis
Deviation of side length in reference
axis
Deviation of side length in minor axis
and
2
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