Measure Angle (Cycle 420, Din/Iso: G420); Cycle Run; Please Note While Programming - HEIDENHAIN TNC 640 User Manual

16
Touch Probe Cycles: Automatic Workpiece Inspection | MEASURE ANGLE (Cycle 420, DIN/ISO: G420)
16.4 MEASURE ANGLE (Cycle 420, DIN/ISO:
G420)

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 The TNC positions the touch probe at rapid traverse (value from
FMAX column) following the positioning logic (See "Executing
touch probe cycles", page 497) to the starting 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.
592
Meaning
The measured angle is referenced to
the reference axis of the machining
plane.
2 and
HEIDENHAIN | User's manual for cycle programming | 10/2017