Tool Change - HEIDENHAIN TNC 370 User Manual

4
Programming
4.2 Tools
Tool change
Automatic tool change
Automatic
tool change can vary depending on
the
individual
machine tool,
Your
machine manuaI
provides more
information on this. function.
If your machine is built for automatic tool changing, the TNC 370 controls
the replacement of the inserted tool by another from the tool magazine.
The program run is not interrupted.
Manual tool change
To change the tool manually, stop the spindle and move the tool to the
tool change position. Sequence of action:
l
Move to the tool change position (under program control, if desired)
l
Interrupt program run (see page 3-4)
l
Change the tool
l
Continue the program run (see page 3-5)
Tool change position
A tool change position must lie next to or above the workpiece to prevent
tool collision. With the miscellaneous functions M91 and M92 (see page
5-54) you can enter machine-referenced rather than workpiece-
referenced coordinates for the tool change position.
If TOOL CALL 0 is programmed before the first tool call, the TNC 370
moves the spindle to an uncompensated position.
If a positive fsngth compensation value was in effect before
TOOL CALL 0, the ~Ieaf~t#ce to the workpiece is
FedLEed.
4
J
1
-I
4
d
.'
4-l 4 TNC 370