HEIDENHAIN iTNC 530 (340 49x-03) - Manual (Page 665)

HEIDENHAIN iTNC 530 665
12.9 A
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aptiv
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F
eed Contr
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l Sof
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Option (AFC)
Remember the following before you record a teach-in cut:
„ If required, adapt the control settings in the AFC.TAB table
„ Enter the desired control setting for all tools in the AFC column of the
tool table TOOL.T.
„
Select the program for teach-in.
„ Activate the adaptive feed control by soft key (see “Activating/
deactivating AFC” on page 667).
When you record a teach-in cut, the TNC internally sets
the spindle override to 100%. Then you can no longer
change the spindle speed.
During the teach-in cut, you can influence the measured
reference load by using the feed rate override to make any
changes to the contouring feed rate.
You need not run the complete machining step in the
teach-in mode. If you can no longer significantly change
the cutting conditions, then you can immediately switch to
the servo control mode. Press the EXIT LEARNING soft
key, and the status changes from L to C.
You can repeat a teach-in cut as often as desired. Manually
reset the ST status to L. It may be necessary to repeat the
teach-in cut if the programmed feed rate was far too fast
and forces you to sharply decrease the feed rate override
during the machining step.
For a tool, you can teach-in as many machining steps as
desired. A machining step always begins with M3 (or M4)
and ends with M5.
The TNC changes the status from teach-in (L) to
controlling (C) only when the recorded reference load is
greater than 2%. Adaptive feed control is not possible for
smaller values.
You machine tool builder can provide a feature with which
the teach-in cut can be automatically ended after a
selectable time. The machine tool manual provides further
information.