HEIDENHAIN TNC 640 (34059x-05) ISO programming - Manual (Page 409)

Dwell time FUNCTION FEED DWELL 11.8
11
TNC 640 | User's ManualDIN/ISO Programming | 1/2015
409
11.8 Dwell time FUNCTION FEED DWELL
Programming dwell time
Application
The behavior of this function varies depending on the
respective machine.
Refer to your machine manual.
The FUNCTION FEED DWELL function is used to program a
recurring dwell time in seconds, e.g. to force chip breaking in a
turning cycle. Program
FUNCTION FEED DWELL immediately prior
to the machining you wish to run with chip breaking.
The defined dwell time from
FUNCTION FEED DWELL is not
effective with rapid traverse and probing motion.
Damage to the workplace!
Do not use
FUNCTION FEED DWELL for machining
threads.
Procedure
Proceed as follows for the definition:
Show the soft-key row with special functions
Select the menu for defining various plain-language
functions
Select the FUNCTION FEED soft key
Select the FEED DWELL soft key
Define the interval duration for dwelling D-TIME
Define the interval duration for cutting F-TIME
NC block
N30 FUNCTION FEED DWELL D-
TIME0.5 F-TIME5*