YASKAWA yasnac i80m

(b)
Each
pitch
dwell
command
In
deep
hole
drilling
G73
and
G83,
drill
load
can
be
reduced
by
inserting
a
small
dwell
at
the hole
bottom
of
each
pitch.
The
dwell
time
is
commanded
by
setting
Pm401
or
address
P.
O
If
each
pitch
dwell
is
commanded
by
the
program,
setting
PnvJOl
is
overridden.
If
not
commanded
by
the
program,
dwell
is
performed
according
to
the
value
of
setting
Pm-Jfll
(l
=
lmst.
PO
is
also
matched
to
PnvIUI.
©
The
default
value
of
hole
bottom
dwell
can
be
set
with
#401.
0
PnvIOl
can
be
nullified
by
parameter
Pm-1017
04.
If
there
is
no
P
command
at
this
lime,
pitch
dwell
is
not
performed.
I
Pm4017
D4
=
0
:
Pm401
invalid
Pm4017
D4
=
l
1
Pm4l)l
valid
(c)
Lift
in
the
middle
command
(C-point
command)
It
is
possible
to
lift
the
tool
to
R-point
in
the
middle
of
high-speed
deep
hole
drilling
G73;
in
addition,
the
tool
can
be
single-block
stopped.
As
a
result,
it
is
possible
to
remove
chips
during
the
cycle.
This
is
commanded
with
address
C.
The
C-point
is
specified
by
an
unsigned
incremental
value.
The
cutting
tool
retracts
to
the
R-point
after
each
drilling
of
distance
C.
For
C-a.\is
set
as
the
additional
axis,
this
command
is
invalid.
This is
axis
command
with
address
C.
First
drilling
depth:
(R+C)
Secuiid
drilling
depth:
IR+2C)
-
Initial
point
Point
R
CL
1
1
o
t
u
Point
C
.
4
Point
C
®
Dwell
0
Single-block
stop
-
*-ÿ
-
Point
Z
Both
C
and
Q
are
unsigned
incremental
values.
Specification
of
negative
value
is
meaningless.
Fig.2.13.8
Lift
in
the
Middle
Command
(
C-point
Command
)
185
-