Measure Angle (Cycle 420, Din/Iso: G420, Software Option 17); Cycle Run; Please Note While Programming - HEIDENHAIN TNC 620 User Manual

15
Touch Probe Cycles: Automatic Workpiece Inspection
15.4 MEASURE ANGLE (Cycle 420, DIN/ISO: G420)
15.4 MEASURE ANGLE (Cycle 420,
DIN/ISO: G420, software option 17)

Cycle run

Touch Probe Cycle 420 measures the angle that any straight
surface on the workpiece describes with respect to the reference
axis of the working plane.
1 Following the positioning logic, the TNC positions the touch
probe at rapid traverse (value from FMAX column) (see
"Executing touch probe cycles", page 304) 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
from there probes the second position.
4 The TNC returns the touch probe to the clearance height and
saves the measured angle in the following Q parameter:
Parameter number
Q150

Please note while programming:

Before a cycle definition you must have programmed
a tool call to define the touch probe axis.
If touch probe axis = measuring axis, set Q263
equal to Q265 if the angle about the A axis is to be
measured; set Q263 not equal to Q265 if the angle is
to be measured about the B axis.
392
Meaning
The measured angle is referenced to
the reference axis of the machining
plane.
2 and
HEIDENHAIN | TNC 620 | User's manual for cycle programming | 9/2015