Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 399)

Chapter
17
17-1
Spindles
This chapter describes spindle speed control, orientation, and direction, and
the virtual C axis.
Topic: See page:
Spindle Speed Control 17-1
Controlling Spindles (G12.1, G12.2, G12.3) 17-9
Spindle Orientation (M19, M19.2, M19.3) 17-10
Spindle Direction (M03, M04, M05) 17-12
Virtual C Axis 17-13
Synchronized Spindles 17-23
If you are using a dual-processing system, spindle control is different.
Refer to page 30-13 for details.
Relative speed of the revolving workpiece to the cutting tool tip is referred
to as the cutting speed. Required cutting speeds can be attained by
designating proper spindle speeds. Figure 17.1 illustrates the relationship
between workpiece diameter (D), spindle speed (N) and cutting speed (V).
Figure 17.1
Relationship between Cutting Speed, Spindle Speed, and Diameter
Chuck
Nrpm
Workpiece
D Diameter
Vm/
min
17.0
Chapter Overview
17.1
Spindle Speed Control