YASKAWA yasnac i80m Instruction Manual page 219

(c)
Operation
( i
)
M
*
*
command
Gear to perform solid tapping is selected.
When it is
not
commanded, only gear A is used.
(
ii
) G93 command
When the G93 command is executed, thespindle
stops
and
a position
control loop relative
to
the
spindle
is created for the solid
tap
mode
to
be entered. Depending on
parameter
setting (Pm 1053 D2=
1),
the
solid
tap
mode
can
be entered after the
spindle
division is performed
and the spindle is positioned
at
the designated position after it
stops.
The spindle dividing is performed
at
the
proper
position only
when the
rotation
numbers of the spindle and spindle PG rotation is 1
to
1.
This
mode is canceled by G94.
I
(iii) G84/G74 commands
•
G84 command
111
Positioned
as
commanded by X.
Y
i-l Positioned
at
R-point
13)
Spindle rotated in normal direction, and cutting fed
up
to
Z-point
(It is checked
at
the beginning of this block whether the deviation
pulse of spindle artd Z-axis
is
within the designated
quantity.
Error detection
ON)
1-1)
Spindle stopped
(deviation pulse of
spindle
is checked
here)
(5)
Dwell
(if
P
commanded)
IG)
Spindle rotation
reversed, and cutting fed
up to
R-point
(7)
Spindle stopped
(S) Positioned
at
the initial point
(in the case of 098)
Q
<i>
n
INITIAL IUINT
«5>
R-H.il NT
V
<3>
tf).
ZltJlNT
<5>
Linear accel/decel
(constants
set
by Pm2-l7l) is automatically applied
to
the spindle
movement.
Fig.2.13.16
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195
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