Preset From Outside Of Corner (Cycle 414, Din/Iso: G414); Cycle Run - HEIDENHAIN TNC 640 User Manual

15
Touch Probe Cycles: Automatic Presetting | PRESET FROM OUTSIDE OF CORNER (Cycle 414, DIN/ISO: G414)
15.8 PRESET FROM OUTSIDE OF CORNER
(Cycle 414, DIN/ISO: G414)

Cycle run

Touch Probe Cycle 414 finds the intersection of two lines and
defines it as the preset. If desired, the TNC can also enter the
intersection into a datum table or preset table.
1 Following the positioning logic, the TNC positions the touch
probe at rapid traverse (value from FMAX column) (See
"Executing touch probe cycles", page 497) to touch point
figure at upper right). The TNC offsets the touch probe by the
safety clearance in the direction opposite to the respective
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). The TNC derives the probing direction automatically
from the programmed 3rd measuring point.
1 Then the touch probe moves to the next starting position
from there probes the second position.
2 The TNC positions the probe to starting point
starting point 4
3 Finally the TNC returns the touch probe to the clearance height
and processes the determined preset depending on the cycle
parameters Q303 and Q305 (See "Characteristics common to
all touch probe cycles for presetting", page 528) and saves the
coordinates of the determined corner in the Q parameters listed
below.
4 If desired, the TNC subsequently measures the preset in the
touch probe axis in a separate probing.
Parameter number
Q151
Q152
556
to probe the third and fourth touch points.
Meaning
Actual value of corner in reference axis
Actual value of corner in minor axis
1 (see
2 and
3 and then to
HEIDENHAIN | User's manual for cycle programming | 10/2017