Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 499)

Dresser/Wheel Radius Compensation
Chapter 15
15-11
Entire Wheel Radius
The control can compensate for any grinding error resulting from the
radius of the entire grinding wheel. To do so, you must enter the radius of
the wheel in the radius table for radius compensation to properly
compensate. This method of compensation does not require the control to
activate any X-length offset. Activate only a Z-length offset with the X
offset being compensated for by the wheel radius.
Figure 15.10
Entire Wheel Radius Compensation for a Typical Grinding Wheel
Wheel gauge point on spindle from
which wheel offsets are usually
measured
Entire Wheel Radius
Z length
offset
This length offsets select this
point as the control point for
programming
12090-I
See Table 15.A for compensation direction for G codes.
If using an entire wheel compensation scheme in conjunction with the
in-process dresser feature (see chapter 21), you can choose to use a radius
offset number 33. This offset number cannot be accessed through the
normal radius offset table. Radius offset 33 is created and maintained
automatically by the in-process dresser feature and accounts for changes in
wheel radius as the wheel is dressed.