HEIDENHAIN TNC 320 (340 55x-05) ISO programming - Manual (Page 146)

146 Programming: Tools
5.2 T
ool D
a
ta
Automatic tool change if the tool life expires: M101
When the specified tool life has expired, the TNC can automatically
insert a replacement tool and continue machining with it. Activate the
miscellaneous function M101 for this. M101 is reset with M102.
Enter the respective tool life after which machining is to be continued
with a replacement tool in the TIME2 column of the tool table. In the
CUR_TIME
column the TNC enters the current tool life. If the current
tool life is higher than the value entered in the TIME2 column, a
replacement tool will be inserted at the next possible point in the
program no later than one minute after expiration of the tool life. The
change is made only after the NC block has been completed.
The TNC performs the automatic tool change at a suitable point in the
program. The automatic tool change is not performed:
„ During execution of machining cycles
„ While radius compensation is active (RR/RL)
„ Directly after an approach function APPR
„ Directly before a departure function DEP
„ Directly before and after CHF and RND
„ During execution of macros
„ During execution of a tool change
„ Directly after a TOOL CALL or TOOL DEF
„ During execution of SL cycles
The function of M101 can vary depending on the individual
machine tool. The machine tool manual provides further
information.
Caution: Danger to the workpiece and tool!
Switch off the automatic tool change with M102 if you are
working with special tools (e.g. side mill cutter) because
the TNC at first always moves the tool away from the
workpiece in tool axis direction.