Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 389)

Using QuickPath Plus
Chapter 15
15-9
Circular to Linear blocks
When the coordinates of the intersection of a circular path into a linear
path are unknown, use the following format. G13 or G13.1 must be
programmed in the first of the two blocks. These blocks must be
programmed in absolute.
Format:
G13G02I__K_; or G13G02R__;
G01,A__Z__X__; G01,A__Z__X__;
Important: K values are the normal integrand values when you use this
format (measured from start point of arc to arc center).
Example 15.5
Arc Into Line Without Programming Intersection Point
G0X0Z0.;
G13G03K4I10F.1;
G01,A0X10Z20;
Figure 15.6
Results of Arc Into Line Without Intersection, Example 15.5
Z
X Control generates
intersection
2
4
6
8
10
2 4
6
8 10 12 14 16 18 20
Important: R cannot be programmed to specify the arc radius for linear to
circular block combinations unless the two tool paths are tangent.