Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set User Manual
Page 395
Axis Motion
Chapter 14
14-19
The angle for the A move in the G02 block above was determined using
the following equation, with L = 20 and R = 100.
360 ( L )
•
=
-------------
2
•
( R )
Where :
Is :
•
The angle to be programmed for the A axis.
L
The length of the arc along the circumference of the cylinder, as required to
define a legal endpoint for the arc programmed in the G02/G03 block.
R
The radius at which the feed axis is positioned. This is the active R value
programmed in the initial G16.1 block, not the R radius for the G02/G03 block.
Figure 14.10 illustrates the results of Example 14.7 with a two-dimensional
plot of the circumferential tool path.
Figure 14.10
Results of Cylindrical Interpolation, Example 14.7
A
(degrees)
X
100
80
60
40
51.459
160
270
360
N02
N05
N04
N07
N08
N09
Feed of 10
into cylinder
0