HEIDENHAIN TNC 407 (280 580) User Manual User Manual
Page 75
TNC 425/TNC 415 B/TNC 407
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4
Programming
Tool change
Tool change is a machine tool dependent function. See your machine tool manual.
Automatic tool change
If your machine is built for automatic tool changing, the TNC 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:
• Move to the tool change position (under program control, if desired)
• Interrupt program run (see page 3-5)
• Change the tool
• Continue the program run (see page 3-6)
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
5-65) 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 moves
the tool spindle in the tool axis to a position that is independent of the tool
length.