6. C–AXIS CONTROL
This function performs C–axis offset as part of a tool change operation
based on a T command, either before or after the mechanical
attachment/detachment of rotary tools and tool holders.
1 Exchanging a regular tool with a rotary tool or a tool in a multiple–tool
T code output
C axis offset
(Coupling enable signal)
Indexing by C–axis command
C–axis connection confirmation
(1)When a T command supporting angle change or multiple–tool
control is specified, a T code and the TF signal are output. At the
same time, tool indexing and C–axis offset are performed.
(2)Upon the completion of tool indexing and C–axis offset, the CNC
sets the coupling enable signal CPEN to 1. Using this signal, the
machine couples the C–axis and tool holder. The PMC sets C–axis
unconnected signal DFDC to 0 to notify the CNC that coupling has
(3)Then upon the completion of tool change, the PMC returns the
TFIN signal to the CNC.
(4)Tool angle change is performed according to the C–axis command.
When multiple–tool control is applied, tool indexing is performed
within the multiple–tool holder.
C–axis Offset Type B