Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 73)

Offset Table and Setup
Chapter 3
3-5
Figure 3.4
Tool Tip Radius for Typical Lathe Tool
.05
Radius
Tool Length (Wear Table)
The tool length wear compensation offset takes into account the wear that a
tool incurs from normal usage. Enter a value in the table that is equal to
the difference between the tool tip positions, before and after tool wear.
Tool Tip Radius Compensation - TTRC (Wear Table)
The tool tip radius wear compensation offset takes into account the normal
wear that a tool tip incurs from normal usage. Enter a value in the table
that is equal to the difference between the tool tip radius before and after
tool wear. Tool tip radius wear compensation is factored into both the X
and Z axes.