HEIDENHAIN TNC 640 (34059x-02) Cycle programming - Manual (Page 89)

UNIVERSAL PECKING (Cycle 205, DIN/ISO: G205) 3.8
3
TNC 640 | User's Manual Cycle Programming | 5/2013
89
Retraction rate for chip breaking Q256
(incremental): Value by which the TNC retracts the
tool during chip breaking. The TNC retracts the tool
at a feed rate of 3000 mm/min. Input range 0.1000
to 99999.9999.
Dwell time at depth Q211: Time in seconds that
the tool remains at the hole bottom. Input range 0 to
3600.0000
Deepened starting point Q379 (incremental with
respect to the workpiece surface): Starting position
of drilling if a shorter tool has already pilot drilled
to a certain depth. The TNC moves at the
feed
rate for pre-positioning from the set-up clearance
to the deepened starting point. Input range 0 to
99999.9999
Feed rate for pre-positioning Q253: Traversing
velocity of the tool during positioning from the set-
up clearance to a deepened starting point in mm/
min. Effective only if Q379 is entered not equal to
0. Input range 0 to 99999.999, alternatively
FMAX,
FAUTO