
6. INTERPOLATION FUNCTION
B--63003EN--1/02
470
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 fold 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
1 Feedrate override is ignored during thread cutting, 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 thread cutting is executed in the single block status,
the tool stops after execution of the first block not specifying
thread cutting.
5 When the previous block was a thread cutting block, cutting
will start immediately without waiting for detection of the
1-- turn signal even if the present block is a thread cutting
block.
6 When a dry run operation is performed the dry run rate
becomes the longitudinal axis feedrate.
7 For T series, the thread cutting retract function is supported
only for the threading cycle.
Warning
Caution