Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 392)

Chamfering and Corner Radius
Chapter 16
16-2
There is a limit of 4 non-motion blocks allowed between the first and
second motion blocks defining the corner transition. A non-motion block
is any block that does not generate axis motion in the currently active
plane. The control generates an error if more than 4 non-motion blocks are
programmed between the cornering plane.
Use the chamfering and corner radius features are often used in
conjunction with QuickPath Plus. They can be programmed in either
absolute (G90) or incremental (G91) modes.
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.
Measure the chamfer size from the intersection of the two blocks.
If the block: Then:
linear distance programmed with the ,C-word is measured from the
intersection of the two tool paths along the linear path.
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
chamfered.
The ,C-word can be programmed any where in a block as long as no space
is programmed between the comma and the chamfer distance.
Example 16.1
Basic Chamfering Using ,C
N10 Z25.0 X0.0 F.1.;
N20 G01X20.,C5.0;
N30 Z5.0;
16.1
Chamfering