HEIDENHAIN TNC 640 (34059x-01) Cycle programming - Manual (Page 488)

488 Touch Probe Cycles: Automatic Workpiece Inspection
1
7.1
1 MEA
S
URE COORDINA
TE
(Cy
c
le
427
, DIN/ISO: G427)
17.11 MEASURE COORDINATE
(Cycle 427, DIN/ISO: G427)
Cycle run
Touch Probe Cycle 427 finds a coordinate in a selectable axis and
saves the value in a system parameter. 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 The TNC positions the touch probe at rapid traverse (value from
FMAX
column) following the positioning logic (see "Executing touch
probe cycles" on page 373) to the starting point 1 . The TNC offsets
the touch probe by the safety clearance in the direction opposite
the defined traverse direction.
2 Then the TNC positions the touch probe to the entered touch point
1 in the working plane and measures the actual value in the
selected axis.
3 Finally the TNC returns the touch probe to the clearance height and
saves the measured coordinate in the following Q parameter:
Please note while programming:
X
Z
1
Parameter number Meaning
Q160 Measured coordinate
Before a cycle definition you must have programmed a
tool call to define the touch probe axis.