Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set User Manual
Page 510
Tool Control Functions
Chapter 20
20-26
The following is a discussion of the units that should be entered for the
different tool life measurement types:
0.
Time - If tool life is measured in units of time (0 is selected as tool
life type), then the units for the expected tool life is minutes. Enter
the minutes of operation that the tool is expected to operate 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
rapid, or blocks that do not produce axis motion are not added to the
accumulated tool life.
1.
Number of times used - 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 activated more then once in a program,
however its accumulated life will only increment by one. Enter the
total number of program executions that may use the tool before the
tool will no longer meet the required tolerance for the part being cut.
2.
Distance - 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 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 axis.