2.8.30.1 Taper Multiple Cornering (G111) (Cent’D)
(iii)
(iv)
(v)
(vi)
(vii)
When the second straight line is desig-
nated by X(U) and Z (hJ)commands, the
second beveling and rounding are dis-
abled.
If this designation is attempted,
an error is caused.
The combination of the firstbeveling and
the second rounding or the firstround-
ing and the second beveling is also availa -
ble.
When the first straight line designation
addresses A,
I, and K are allspecified,
A is ignored.
The first straight line is
created by I and K commands alone.
When the second straight line designation
addresses B, X(U) , and Z(W) are “all
specified and two of the first straight
line designation addresses A, 1, and K
are further specified, B is ignored.
The second straight line is created by
X(U) and Z(W) commands.
How to specify straight line move angles
Aand B:
Specify a positive value for the counter-
clockwise
rotational angle from Z–axis
positive direction,
and a negative value
for the clockwise rotational angle from
Z-axis positive direction.
(Specification range: -360.000 S A, B ~
360. 000)
EXAMPLE :
\
4--+*
A1350r A225
Notes :
1. G 111 is
nonmodal G code and is valid only in
the specified block.
?
ti. Addresses hi, S, and T cannot be specified
in the block specified with Gill.
3.
If the first beveling portion to be specified
by address C of the block specified with
G 111 has the contour shown below, the
specification is disabled:
4
5
(i) Outside the rectangle enclosed by the
start and end points .
‘“[’ +--,
PO;N-
1
I
1
L—— —_ —— ___ 1 SrAf7T
POINT
(ii) Between the straight line going from start
point to end point at angle of 45° and the
straight line going from end point to start
point at angle of 45°.
END
PCllNT I
h
\
\
\
\
\
\
\
\
\
\
45’
~i. \\
\
\
\
1
\\
\
\
\
START
POINT
The end point in the above diagram is the
end point of the second straight line with no
second beveling and rounding .
When Gill block is executed on a single block
basis, the movement up to the end point is
performed assuming the maximum of four
blocks .
Writing G 111 block in the buffer, the control
unit performs all computations for the first
and second straight lines and the first and
second beveling and rounding.
For some
contours, the computation time requires more
than 500 msec. If the move time in the pre–
ceding block is shorter than the computation
time, the movement stops, sometimes causing
undesirable effects on the cutting surface .
To prevent the stop of movement due to the
computation time, ii is recommended to pro–
vide the buffering state (M93 command) be–
fore the four blocks before specifying G 111
block command.
140
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