HEIDENHAIN iTNC 530 (340 49x-03) ISO programming - Manual (Page 588)

588 12 Test Run and Program Run
12.9 A
d
aptiv
e F
eed Contr
o
l Sof
tw
a
re
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 590).
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.
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.
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 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.