HEIDENHAIN TNC 640 (34059x-04) Cycle programming - Manual (Page 416)

Touch Probe Cycles: Automatic Measurement of Workpiece
Misalignment
15.2 BASIC ROTATION (Cycle 400, DIN/ISO: G400)
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TNC 640 | User's Manual Cycle Programming | 3/2014
15.2 BASIC ROTATION (Cycle 400, DIN/ISO:
G400)
Cycle run
Touch probe cycle 400 determines a workpiece misalignment by
measuring two points, which must lie on a straight surface. With
the basic rotation function the TNC compensates the measured
value.
1 Following the positioning logic, the TNC positions the touch
probe at rapid traverse (value from FMAX column) (see
"Executing touch probe cycles", page 410) to the programmed
touch point
1 . The TNC offsets the touch probe by the safety
clearance in the direction opposite to the defined traverse
direction.
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 to the next starting position 2 and
probes the second position.
4 The TNC returns the touch probe to the clearance height and
performs the basic rotation.
Please note while programming:
Before a cycle definition you must have programmed
a tool call to define the touch probe axis.
The TNC will reset an active basic rotation at the
beginning of the cycle.