Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 549)

Cutter Diameter Compensation
(G40, G41, G42)
Chapter 21
21-31
Figure 21.26 through Figure 21.29 illustrate the basic motion of the cutting
tool as it executes program blocks during cutter compensation:
Figure 21.26
Cutter Compensation Tool Paths Straight Line-to-Straight Line
180
• • •
270
270
• • • • • •
90
• • •
180
0
• • •
90
generated block
G41
G42
Programmed path
G41
G42
Programmed path
•
G41
G42
Programmed path
•
•
•
G41
G42
Programmed path
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
0
• • •
90
G41
G42
Programmed path
• r
r
r
r
G39.1 (Circular Generated Block) G39 (Linear Generated Block)
G39.1 (Circular Generated Block) G39 (Linear Generated Block)
270
• • • • • •
•
G41
G42
Programmed path
r
r
r
r
r
generated block
Linear
Circular
generated
Linear
block
generated
Circular
block