Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 539)

Cutter Diameter Compensation
(G40, G41, G42)
Chapter 21
21-21
Figure 21.18 and Figure 21.19 show examples of typical entry moves using
type B cutter compensation:
Figure 21.18
Tool Path for Entry Move Straight Line-to-Straight Line
0
• • •
90
90
• • •
180
180
• • •
270
270
• • •
360
E
G41
G42
Programmed
path
G41
G42
Programmed
path
G41
G42
Programmed
path
G41
G42
Programmed
path
B
A
C
Start-point
Start-point
A
D
C
B
r
r
•
•
r
r
r
•
•
A
B
C
D E r
r
r
r
r
r
A
B C r
r
r
Start-point
Start-point
G39 (Linear Generated Blocks)
G39 (Linear Generated Blocks)
r
r
r
r
G39.1 (Circular Generated Block)
0
• • •
90
G41
G42
Programmed
path
Start-point
r
r
r
A
B
C D
•
G39.1 (Circular Generated Block)
270
• • •
360
G41
G42
Programmed
path
•
Start-point
r
r
r
A
B
C D