420 Touch Probe Cycles: Automatic Workpiece Inspection
16.8 MEAS. RECTAN. OUTSIDE (Cycle 424, DIN/ISO: G424)
16.8 MEAS. RECTAN. OUTSIDE
(Cycle 424, DIN/ISO: G424)
Cycle run
Touch Probe Cycle 424 finds the center, length and width of a
rectangular stud. 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 (see “Executing touch probe
cycles” on page 318), the TNC positions the touch probe to the
probe starting point 1 at rapid traverse (value from MP6150). The
TNC calculates the probe starting points from the data in the cycle
and the safety clearance from MP6140.
2 Then the touch probe moves to the entered measuring height and
probes the first touch point at the probing feed rate (MP6120).
3 Then the touch probe moves either paraxially at the measuring
height or linearly at the clearance height to the next starting point
2 and probes the second touch point.
4 The TNC positions the probe to starting point 3 and then to starting
point 4 to probe the third and fourth touch points.
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 Meaning
Q151 Actual value of center in reference axis
Q152 Actual value of center in minor axis
Q154 Actual value of length in the reference
axis
Q155 Actual value of length in the minor axis
Q161 Deviation at center of reference axis
Q162 Deviation at center of minor axis
Q164 Deviation of side length in reference axis
Q165 Deviation of side length in minor axis
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