HEIDENHAIN TNC 640 (34059x-05) Cycle programming - Manual (Page 554)

Touch Probe Cycles: Automatic Workpiece Inspection
16.12 MEASURE BOLT HOLE CIRCLE (Cycle 430, DIN/ISO: G430)
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TNC 640 | User's Manual Cycle Programming | 1/2015
16.12 MEASURE BOLT HOLE CIRCLE
(Cycle 430, DIN/ISO: G430)
Cycle run
Touch Probe Cycle 430 finds the center and diameter of a bolt
hole circle by probing three holes. 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 444) to the center of the
first hole
1 .
2 Then the probe moves to the entered measuring height and
probes four points to find the first hole center.
3 The touch probe returns to the clearance height and then to the
position entered as center of the second hole 2 .
4 The TNC moves the touch probe to the entered measuring
height and probes four points to find the second hole center.
5 The touch probe returns to the clearance height and then to the
position entered as center of the third hole 3 .
6 The TNC moves the touch probe to the entered measuring
height and probes four points to find the third hole center.
7 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
Q153 Actual value of bolt hole circle
diameter
Q161 Deviation at center of reference axis
Q162 Deviation at center of minor axis
Q163 Deviation of bolt hole circle diameter