YASKAWA YASNAC 3000G

2.14.6
CIRCLE
CUTTING
(G12,
G13>+
When
R
is
zero or
is
omitted,
the
tool
moves
over
the
entire
path
at
cutting
feedrate
designated
by
the
F
code.
In
circle
cutting
(G12, G13),
compensation
for
the
;
tool
radius is
made
regardless
of
the
program¬
ming
of
G41,
G42
(tool
radius
compensation).
Program
G12,
G13
in
G40
(tool
radius
compensa¬
tion
cancel)
mode.
When
the
signs
of
I,
R
and
(D)
are
properly
con¬
sidered,
a
circle
can
be
cut
in
the
negative
direc¬
tion
of
X
axis.
I,
R
and
(D)
are
all
negative
in
the
example
shown
below.
Cutting
the
Y
direc¬
tion
is
impossible.
G12
I-
• •
R-
•
•
D.
•
-
F-
•
•
*
.
(G
13)
With
this
command,
circle
cutting
is
programmed;
i
Y
1/,
/
Tool
©
4
/<£
©
Y
©X
I
4
z
urn
/
z
©
/
©,
Tool
"'N
o
k
Z-
x
/A-m
START
POINT
J
I-(D)
/
/
I
©
Z
Tool
path
G
12:
©
-
0-
®
-
©
-
©
-
©
G13;
©-0-0-©
-
©-
©
(D)
represents
a
set
value,
of
tool radius
compensation.
R-(D)
hr
I-(D)
I
Tool
path
G
12:
©-©-©-©-0-0
G
13:
©+®ÿ0ÿ©ÿ
©+
©
(D)
represents
a
set
value
of
tool
radius
compensation.
G
12
;
Clockwise
(CW)
G13:
Counterclockwise
(CCW)
I;
Raidus
of finished
circle
(incremental
value
with
sign)
R:
Rapid
traverse
section
(incremental
value
with
sign)
D:
Tool radius
compensation
No.
•F;
Cutting
feed
rate
G
12;
Clockwise
(CW)
G
1
3:
Counterclockwise
(CCW)
I;
Radius
of
finished
circle
(incremental
value
with
sign)
R:
Rapid
traverse
section
(incremental
value
with
sign)
D:
Tool radius
compensation
No.
F:
Cutting
feed
rate
Fig.
2. 14.
C.
1
Circle
cutting
is
performed
on
the
XY
plane,
and
a
circle
is
cut.
with
the
tool
moved
from
the
cen¬
ter
of
the
circle
as
indicated above.
In
sections
(
(0
,
((T))
designated by
R,
the
tool
moves
at
a
rapid
traverse rate
regardless
of
the
F
code. This is
for
reducing
the
air
cut
time,
and the
rapid
traverse
rate
is
set
by
a
parame¬
ter
according
to
the
type
of
machine.
(Parame¬
ter
No.
"66")
Fig.
2.
14.
6.
2
-
30
-