
12. DIRECT OPERATION FOR
MACHINING PROGRAMS
CREATED CONVERSATIONALLY
B–63284EN/03
OPERATION
178
(2) Override playback
When a conversational machining program, for which override
teaching is performed, is executed, its memorized override values
are automatically applied (override playback).
In this case, however, note that an override value of 100% must be
set. Otherwise, the feedrate will be overridden twice.
When a conversational machining program is executed using the
override playback function, OVR.PLAY BACK blinks on the
execution in–progress screen.
When conversion to an NC program is performed while the override
playback function is being used, overridden feedrate data is output.
WARNING
When using the override playback function, especially when
increasing an override value, make sure that the override
value is sufficient for successful machining.
If the override value is too high, the machine may be forced to
perform unnatural machining, possibly causing damage to the
tool and/or machine, and even injuries.
NOTE
1 If override teaching is performed with a machining program
being executed using the override playback function,
override values, produced by multiplying one override value
by another, are memorized.
2 The override teaching and override playback functions can
be used with the following processes:
– Bar machining (excluding finish machining)
– Pattern repeating (excluding finish machining)
– Residual machining
– End facing
– Grooving (excluding finish machining of trapezoidal
grooves)
– Necking
– Center drilling/drilling
– C–axis center drilling/drilling
– C–axis grooving/notching/cylindrical machining
– Y–axis center drilling/drilling
– Y–axis milling