okuma G71, G72 User Manual
I
13-2.
13-2-1.
THREAD
CUTTING
Longitudinal
G71
In
r
mode
COMPOUND
Thread
thread
vl
CYCLE
Cutting
cutting
(G71/G72)
Cycle
cycle
(G71)
as
shown
below
performed:
is
“K
3277-E
Starting
point
thread
[cycle
P-166
of
cutting
H./2
I
.1.
z
\
X
H/2
Format
Description
:
N0001
Final
X:
Z
Z:
Taper
A:
Difference
I:
X
1
G7
of
diameter
coordinate
angle
thread
For
(expressed
taper
Z
each
thread,
in
(I)
A
word:
of
of
radius
thread
end
point
in
use
D
B
between
radius)
either
U
of
H
thread
starting
B
""]D/2
2
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M
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L
taper
point
word.
I
or
A
and
point
end
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MACHINERY
WORKS
LTD.
3277-E
P-167
4
B:
Cutter
(0°
D:
Depth
(Expressed
U:
Finishing
(Expressed
;
H:
is
Thread
(Expressed
L:
Chamfering
(Effective
assumed
E
F
:
Same
:
!
J
M:
Q:
Used
(For
The
13-2-5.)
tip
B
<
of
provided.)
not
height
as
in
to
select
details,
number
point
180°;
cut
in
in
allowance
in
in
distance
m
as
the
G33
of
angle
if
0°
the
diameter)
diameter;
diameter)
M23
mode;
distance
mode
thread
refer
threads
first
in
to
B
no
no
final
if
equivalent
cutting
2-3.)
for
command
thread
cutting
finishing
thread
no
L
word
pattern
multi-thread
is
cycle
cutting
is
to
and
provided.)
cycle
is
provided
lead.)
one
mode
thread
performed
le
eye
of
cutting
in
M23
infeed.
if
(refer
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mode
U
,
to
word
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Compound
cutting
H
Fixed
cycle
Cycle
as
(G72)
show
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Per
Point
of
thread
Starting
P-168
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cutting
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3277-E
P-169
Format
Description
1
N0001
X:
Z:
A:
K:
Distance
For
B:
Cutter
D:
Depth
W:
Finishing
(No
:
G72
X
coordinate
Z
dimension
Taper
taper
(0°
<.
finishing
of
angle
tip
B
<
of
X
Z
each
of
between
thread,
point
180°;
cut
in
allowance
A
word:
of
cycle
(K)
end
final
starting
angle
0°
the
BDWHLEFJMQ
point
use
if
first
is
thread
either
B
no
performed
of
point
command
thread
thread
cutting
or
A
and
K
is
cutting
if
cycle
point
end
word.
provided.)
a
W
word
cycle
for
taper
is
not
thread
provided.)
H:
Thread
L:
Chamfering
(Effective
assumed
E
F
Same
J
M:
Q:
Used
(For
The
13-2-5.)
;
,
height
as
in
select
to
details,
number
distance
in
to
the
G32
of
M23
distance
mode
thread
refer
threads
in
mode;
to
final
if
equivalent
cutting
2-3.)
for
multi-thread
no
thread
L
word
pattern
cutting
is
one
to
and
thread
cycle
provided
lead.)
mode
in
of
cutting
M23
infeed.
mode,
(refer
is
L
to
1
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1
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13-2-3.
Code
M
the
In
specifying
(1)
M
M32
M33
M34
When
cally
Note
(2)
M
M73
Specifying
block
code
calling
thread
specifying
.....
.....
either
selects
:
If
disregarding
code
specifying
.....
Thread
cutting
straight
zigzag
straight
(not
of
B
word
Infeed
available
these
M32
for
cutting
infeed
infeed
mode.
has
infeed
pattern
Cutting
thread
mode
infeed
M
"0"
of
cutting
and
mode
along
along
with
codes
value,
selected
pattern
1
Mode
and
infeed
thread
thread
specification)
A
is
not
infeed
mode.
Infeed
compound
pattern
face
face
provided,
is
Pattern
fixed
(on
(on
made
should
left
right
the
parallel
cycle,
be
face)
control
3277-E
M
codes
presented.
face)
automati
the
to
P-170
axis
ft
i;
'
'
Infeed
cycle
After
D/2, D/4,
if
as
When
performed
.....
M74
M75
Infeed
Infeed
cycle
fxmslimg
no
formed
Infeed
In
depth
optimum.
determined
3
until
specified.
much
no
until
(W)
U
.
each
of
bit
6.
is
that
as
U
.
pattern
is
word
patterns
thread
cut
made
the
point
and
D/8
the
(W)
word
made
by
"H
-
eye
£
0
is
cutting
is
Whether
by
the
(in
D
by
point
is
reached,
D/8,
And
in
specified
is
2
(in
D
(W)"
U
s
1
niseis
specified,
and
3
determined
pattern
setting
diameter)
D
mm
away
leaving
finishing
the
amount
provided,
diameter)
position
wxxn
4
path
so
3
of
from
infeed
finishing
U
finishing
infeed
finishing
the
of
that
or
pattern
optional
in
(W)
in
is
thread
metal
each
-
"H
amount
cycle,
.
each
reached.
snioizixfc
cycle
removal
4
is
parameter
thread
(W)"
U
changed
is
allowance
infeed
cycle
thread
After
of
U
is
cutting
selected
cutting
position.
is
cutting
W
C
not
cycle,
rate
(bit)
U
is
not
j
*
per¬
(W)
made
that,
is
is
No.
as
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Optional
.....
0
1
OKUMA
parameter
Infeed
Infeed
MACHINERY
(bit)
pattern
pattern
No.
3
4
WORKS
3,
LTD.
bit
6:
is
327
7-E
P-171
Infeed
a)
M3
1)
Pattern
,
M34
2
D2
Each
mined
the
cutting
point
"
-faD"
"H
"U(W)"
finishing
designated
2)
D2
In
cutting
i
for
and
points
will
M33
to
of
until
Finally,
carry
not
program
is
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b)
3:
is
designated.
(
H2
thread
by
-
the
>
workpiece
point
"/
2D",
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U(W)".
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to
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the
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thread
point
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and
dZ
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is
the
to
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each
provide
paths
carried
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designated.
U(W))2
(H
-
cutting
cutting
OD;
"D",
and
the
path
Finally,
out
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the
(H
U
-
cutting
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dl
path,
for
Sn
are
dn
most
appropriate
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out
if
path
point
the
the
"n"th
the
reaches
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(W))2
D)
d2
the
determined
point
tool
cycle
U(W)
}
first
second
the
carried
}
path,
and
and
"n"th
accuracy
This
of
.
is
in
which
path
cutting
metal
S2
"H
is
not
the
path
path
the
cycle.
out
assume
for
path,
so
metal
cycle
U(W)"
-
fed
The
designated
cycle
is
the
is
created
at
at
cutting
cutting
tool
if
the
removal
the
then
that
removal
while
is
"U(W)"
by
finishing
is
deter¬
depth
cutting
point
is
fed
The
U(W)
thread
volume
second
cutting
S2
to
volume
the
number
repeated
is
reached.
cycle
in
at
point
is
path,
Sn
to
the
from
of
by
not
SI
is
1)
1
OKUMA
>(H2
D2
Thread
point
being
is
reached.
cutting
Finally,
carry
carried
not
program.
MACHINERY
-
cutting
at
nD"
"f
point
out
H
-
each
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the
finishing
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cycle
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thread
point
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The
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with
cutting
of
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1/2
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designated
the
!,H
paths,
(W)"
cutting
path
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cycle
in
U(W)"
the
to
is
the
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.
BW
3
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-
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