Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 391)

Axis Motion
Chapter 14
14-15
Important: Cylindrical interpolation requires that the cylindrical
interpolation rotary axis rollover value be 360 degrees.
This discussion assumes the following AMP axis name assignments. Refer
to the literature provided by your system installer for the axis names used
by your machine.
Feed axis is Z
Park axis is Y
Linear axis is X
Rotary axis is A
Figure 14.9 shows a typical mill configuration for cylindrical interpolation.
Figure 14.9
Typical Mill Configuration for Cylindrical Interpolation
Milling Tool
Workpiece
Z
Cylindrical Interpolation
Feed Axis
X Cylindrical Interpolation
Linear Axis
Y
Cylindrical Interpolation
Park Axis
Contour milled into cylindrical
workpiece surface
A Cylindrical Interpolation
Rotary Axis
Important: The center of the rotary axis must coincide with the center-line
of the workpiece on which contours are machined during cylindrical
interpolation.