
B-63943EN-1/02 6.INTERPOLATION FUNCTION
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Warning
WARNING
During threading, stopping feed without stopping the spindle
is dangerous because the cutting depth will abruptly increase.
Feed hold is, therefore, disabled during threading. If
attempted during threading, feed stops in the same way as
single block stop upon the completion of the first
non-threading block after the termination of threading mode.
The feed hold lamp (SPL lamp), however, lights immediately
after the feed hold button (on the machine operator's panel) is
pressed. The lamp goes off when feed stops (the CNC enters
the single block stop state).
Caution
CAUTION
1 Feedrate override is ignored during threading, 100% being
assumed.
2 During threading, spindle override is ignored, 100% being
assumed.
3 When the first non-threading block is executed after threading
mode has been finished, and the feed hold button is pressed
again (or the feed hold button has been held down), the
execution of the non-threading block is stopped immediately.
4 When threading is executed in the single block status, the tool
stops after execution of the first block not specifying
threading.
5 When the previous block was a threading block, cutting will
start immediately without waiting for detection of the 1-turn
signal even if the present block is a threading block.
6 When a dry run operation is performed the dry run rate
becomes the longitudinal axis feedrate.
7 For T series, the threading retract function is supported only
for the threading cycle.
Reference item
Manual name Item name
USER’S MANUAL
(B-63944EN)
Threading