Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 708)

In-process Dresser
Chapter 21
21-2
Important: The in-process dresser feature requires that your control be
configured such that the S word controls the grinding speed. For
cylindrical grinders, this means you must be capable of performing CSS on
the grinding wheel, not the part spindle. See spindle speed control, page
12-34 for details on CSS and spindle configurations.
Figure 21.1
Roll Dresser Motion Perpendicular to Grinding Wheel Centerline
Roll or
Crush dresser
Grinding wheel
Dresser must be capable of
motion perpendicular to grinding
wheel centerline (dresser axis)
Change in wheel length can only
be compensated for on one axis
12095-I
While the in-process dresser is active and dressing the grinding wheel, the
wheel is shrinking in diameter. The control uses the value entered into the
in-process dresser table to calculate the amount of wheel shrinkage per
wheel revolution. See the description on page 21-10 for details on the
“Dressing Amount Per Rev” parameter.
The control uses this amount of wheel shrinkage to generate an in-process
dresser offset. This offset is similar to a wheel length offset. It
compensates changing wheel diameter by creating additional length
offsets. The axis that this dresser offset is applied to is determined by the
current plane selection.
21.1
Offset Generation While
Dressing