Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 475)

Tool Control Functions
Chapter 20
20-19
This section assumes that tools have already been assigned to their specific
groups. This section describes specific information that is to be entered
into the tool life management tables for the individual tools. This
information may also be entered into the tool management tables using the
programming method described on page 20-22. This information includes:
Tool length offset number
Tool diameter/radius offset number
Expected life of a tool
Tool length and diameter/radius offset number
Use this feature of tool life management so the programmer does not need
to know what tool has been called by tool life management and still have
the correct tool offsets and cutter compensation activated.
Important: The control only automatically enters the tool length and
cutter compensation offset numbers. This may or may not activate the tool
length offset or cutter compensation features. These features must still be
activated as normal.
Expected Tool Life
Use this feature of tool life management to set the expected life of a tool.
The type of tool measurement used is assigned to the tool group as
described in section 20.5.1. This tool measurement type determines the
units that are used for the expected tool life.
As a tool is used the amount of usage is recorded and displayed as the
accumulated tool life (the amount of the expected tool life that has been
used). This is displayed individually for each tool on the tool data display
screen. The accumulated tool life can be reset to zero by pressing the
{RENEW TOOL} softkey.
The following is a description of the units that should be entered for the
different tool life measurement types:
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.
20.4.2
Assigning Detailed Tool
Data