Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 432)

Using Chamfers and Corner Radius
Chapter 16
16-2
Using Chamfers
Program a chamfer size following the address ,C to cut a chamfer between
consecutive tool paths. The chamfer word must follow a comma (,) and is
programmed in the first of two paths connected by the chamfer. The value
following the ,C address is the amount of tool path cut of each
programmed tool path by the chamfer. The angle that the chamfer makes
with the tool paths is dependant on the size of the chamfer.
The chamfer size is measured from the intersection of the two blocks. If
the block is linear, then the distance programmed with the ,C word is
measured from the intersection of the two tool paths along the linear path.
If the block is circular, then the chamfer distance programmed is applied as
a chord length on the arc measured from the intersection between the two
blocks. This applies regardless of the combination of arcs and lines to be
cut with a chamfer.
Example 16.1
Using the Basic Chamfer ,C
N10 G00 Y0 X25 F100;
N20 G01 Y20., C5.0;
N30 X5.0;
N40 M30;
Figure 16.1
Results From Chamfer Example 16.1
5.0
5.0
Y
X
N30
N20
25 20 15 10 5
20
15
10
5