Specifications

_____________________________________________________________________
_____________________________________________________________________
CONCISE GUIDE FANUC 38
To use the Tool Radius Offset therefore means to enable 3 functions from the program:
G41
➨ Activate the Tool Radius Offset for a PIECE ON THE RIGHT as to the tool direction.
G42
➨ Activate the Tool Radius Offset for a PIECE ON THE LEFT as to the tool direction.
G40
➨ Deactivate the tool radius offset.
La Tool Radius Offset is usually only used in the finishing stages to obtain the correct profile. In fact, this
programming makes it possible to define exactly the profile specified on the drawing allowing the control to
automatically offset the errors caused by the insert position and radius. To work with offset the instructions
must be entered in the program to activate and deactivate the function and to supply the control with the
information regarding the insert (radius and orientation).
On machines fitted with the back spindle option the activation functions (G41 / G42) and deactivation
functions (G40), are applied as described in the previous diagram.