Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 565)

Chapter
24
24-1
Compound Turning Routines
Compound turning routines are routines that make multiple passes across
the workpiece to cut a specific contour into the workpiece. A set of
blocks, called contour blocks, define the final contour shape of the
workpiece. A calling block, containing one of the following G-codes, sets
the parameters for the execution of the routine and defines what blocks are
used as the contour blocks.
Topic: On page:
G73 O.D. and I.D. Roughing Routine (along Z-axis) 24-2
G74 Rough Facing Routine (along X-axis) 24-15
G75 Casting/Forging Roughing routine (parallel to work shape) 24-29
G72 O.D. and I.D. Finishing Routine 24-35
Important: Descriptions in this chapter are written assuming the control is
in the G18 plane and that plane has been defined as the ZX plane. If your
system has a different plane active, operation of these features is different.
Parameters are defined here assuming Z is the first axis in the plane, and X
is the second axis in the plane. If, for example, the XZ plane is the
currently active plane, descriptions in this document should be interpreted
accordingly (i.e., Z axis description applies for X axis and X axis
description applies to Z axis. Refer to your system installer’s
documentation for details on the plane definitions on your system.
If you are using a dual--processing system, refer to page 30-14 for details
about spindle control.
Important: Any rapid motions that are generated by the execution of a
compound turning routine are always performed using exponential
ACC/DEC. Refer to chapter 18. Compound turning routines ignore the
AMP parameter that determine the ACC/DEC type normally used for
rapid moves. If AMP parameters have not been configured to properly
allow rapid motions using exponential ACC/DEC, a SERVO AMPLIFIER
FAULT error may be generated during the execution of these routines.
24.0
Chapter Overview