HEIDENHAIN TNC 640 (34059x-05) - Manual (Page 410)

Programming: Special functions
11.3 Adaptive feed control AFC (Option #45)
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TNC 640 | User's Manual
HEIDENHAIN Conversational Programming | 1/2015
The TNC records the total machining time for all
teach-in cuts
(LTIME), all control cuts (CTIME) and
the total time difference
(TDIFF), and enters it after
the keyword TOTAL in the last line of the log file.
The TNC can only calculate the time difference
(
TDIFF) if you have completed the teach-in step.
Otherwise the column remains empty.
Proceed as follows to select the
<name>.H.AFC2.DEP file:
Select the
Program Run, Full Sequence operating
mode
Shift the soft-key row
Select the table of AFC settings
Show the log file
Tool breakage/tool wear monitoring
This feature must be enabled and adapted by the
machine tool builder.
Refer to your machine manual.
With the breakage/wear monitor, a cut-based tool breakage
detection during active AFC can be realized.
Through the functions that can be defined by the machine tool
builder you can define a percentage value for wear or breakage
detection with respect to the rated power.
When the defined limit spindle power range is not maintained, the
TNC conducts an NC stop.