Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 476)

Tool Control Functions
Chapter 20
20-20
If tool life is measured by the number of uses (1 is selected as tool life
type), then the units for the expected tool is the number of programs that
the tool may be selected as an active tool in. The accumulated life of a
tool is increased by one if that tool is selected in a program as the active
tool. Remember that the same tool may be active more than once in a
program, however its accumulated life only increments by one. Enter
the total number of program executions that can use the tool before the
tool no longer meets the required tolerance for the part being cut.
If tool life is measured in units of distance (2 is selected as tool life
type), then the units for the expected tool life is either inches or
millimeters (depending on the current operating mode of the tool).
Enter the distance of travel that the tool is expected to cut and still be
within the tolerance required for the part being cut. The accumulated
life of a tool is only measured when that tool is the active tool, and it is
performing a cutting operation. Moves that are are rapid, or blocks that
do not produce axis motion are not added to the accumulated tool life.
For multi-axis moves (including arcs and helices) the distance added to
the accumulated life is the vectorial distance, not necessarily the
distance traveled on each axes.
During turning cycles only the distance that the tool travels along the
workpiece contour is added to the accumulated life. The other three
moves of the cycle are not added regardless of if they are executed at
cutting speed. The entire finishing pass for the contouring routine (if
any) is used to increase the accumulated tool life.
Entering Specific Tool Data
The following steps describe the method of entering specific tool data for
tool management. This includes tool offset numbers, and expected tool
life:
Important: This section assumes that the steps required to assign tools to
specific groups has been performed as described in section 20.5.1.
1. Press the {OFFSET} softkey.
(softkey level 1)
PRGRAM
MANAGE
OFFSET MACRO
PARAM
PRGRAM
CHECK
SYSTEM
SUPORT
FRONT
PANEL
ERROR
MESAGE
PASS-
WORD
SWITCH
LANG