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Scaling
(G50, G51) %
Forms instructed
by a
part
program
can be expanded
or
contracted
to
any
desired
rate
of
magnification.
2.8.4
(1)
The
following
G codes
are used
for this
purpose.
Table 2.8.5
C
Code
Group
Mean
inn
Scaling
OFF
G5A
15
l
G5I
Scaling ON
15
(2)
|
G51 I
......
J
. .....
K
P
|
With the above command, the form is
expanded or
contracted around
the coordinate value
specified by I, J,
and K
as
the
center
of
scaling
by
the
rate
of magnification specified
by
P.
O)
|
G50 :
The above
command
cancels
the scaling mode.
(4)
The magnification
rates
of
expansion and
contraction
are
0.000001
to
99.999999 times.
(5)
The command unit of
P is 1=0.000001.
When P
is instructed with
a
decimal
point appended, it is
assumed
for the G51 block
only
that
there
are
six
digits
after the decimal point.
(Example)
P 0.999999
-
-
0.999999 times
P
2.0
-
-
2 times
-
0.000002 times
P 2
(6)
If the
magnification rate specified by P
is
omitted, a
rate
of magnifica¬
tion
determined
by setting
Pm0S03 and Pm0804 is assumed.
I
Rate of
magnification
=
Pm0803/Pm0804
j
(Example)
Pm0S03
=
3,
Pm0804 = 100
Rate of
magnification
=
3/100
=
0.03 times
The
rate
°t
magnification
determined
by
settingmust
not
exceed the
range
of
expansion
and contraction
stipulated
above.
-
97
-
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