6. CAUTIONS ON C–AXIS FAPTC–AXIS FAPT FUNCTION
The setting of the number of simultaneous moving axes in the approach
and the return relief can be specified by 0300 – 0304 system parameters.
The simultaneous 1 axis, 2 axes or 3 axes can be specified at the approach.
The simultaneous 1 axis or 2 axes can be specified for X and Z at the return
1) Simultaneous 1 axis specification
The move order of C–axis always becomes last.
The order of X–axis and Z–axis is set by MTF 1084.
2) Simultaneous 2 axes specifications
i) When MTF 1307 is set to 1, the axes move according to the setting
of MTF 1084. For instance, when MTF 1084 is set to 1, the order
becomes as follows:
Approach in end face: ZC–axis to X–axis
Approach in outside diameter: XC–axis to Z–axis
ii) In case MTF 1307 is 0, the C–axis moves after the move of
The meaning of under–mentioned MTF changes because C–axis
machining is added.
The 2018th: Simultaneous 3 axes approach
The 2031st: First motion in simultaneous 1 axis approach
First motion in simultaneous 2 axes approach
The 2032nd:2nd motion in simultaneous 1 axis approach
3rd motion in simultaneous 1 axis approach
2nd motion in simultaneous 2 axes approach
Setting of Parameter
Specification of Move
Order at the Time of
Type of NC Data