Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 427)

Using QuickPath Plus
Chapter 15
15-9
Linear to Circular Blocks
When the coordinates of the intersection of a linear path into a circular
path are not known, use the following format. Note that G13 or G13.1
must be programmed. These blocks must be programmed in absolute.
Format:
G13 G01 ,A__ ; or G13G01 ,A__ ;
G02 X__ Y__ I__ J__ ; G02 X__ Y__ R__ ;
Important: If the second block is an arc and it is programmed using I, J,
and K integrands, the values programmed with I, J, and K are not
measured from the start point of the arc. This is because the start point of
the arc is normally unknown when using this format. When using this
format the integrands specify the distance from the end point of the arc to
the center point.
Example 15.4
Line Into Arc Without Programming Intersection
G00X25.Y0.F500
G01G13.1,A90;
G03X7.Y15.I9.21J-2.;
M30;
Figure 15.5
Results Of Example 15.4
X
Y
20 15 10 5 25
90
•
135
•
7
R 10.0
20
15
10
5
J
I
Important: R may not be programmed to specify the arc radius for linear
to circular block combinations unless the two tool paths are tangent.