Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 533)

Dresser/Wheel Radius Compensation
Chapter 15
15-45
For one of these cases that changes the radius compensation direction, the
control attempts to find an intersection of the actual compensated paths:
Linear-to-Circular, Circular-to-Linear, or Circular-to-Circular Paths
If the control finds an intersection, it modifies the end-point of the original
compensated path and the start-point of the new compensated path to equal
that intersection (see Figure 15.38).
Figure 15.38
Change in Compensation with Actual Path Intersection
G41
G42
G41
Programmed
Compensated path G41
Programmed path
r
+
+
r
r
r
+
+
Programmed
path
Compensated
path G42
Compensated
path G42
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