Table 2.11
Arc Center
Coordinate
(10000, – 2700)
100 – 60
I
—=20mm
2
–
J2~2 – 202. ,;~
K
= –19.596+ –19.60 mm
The above case can be programmed as follows.
Gol z-. . F.. . ;
] G02 x60.
z-46.6 120. K-19.6 F.. . ; \
The feedrate commanded by the F code is a
tangential feedrate.
Notes :
1.
The direction of the arc of G02 for Clockwise
is defined as follows.
!!When viewing the X, Z plane in -Y direction
in the right–hand coordinate system, the tool
moves clockwise from the beginning point of
the arc.“
Therefore, the direction of rotation in the
plate (-X, Z plane) in the figure below is
presented inversely.
-.
u
.
G 03
2. When the end point of arc is not designated
on the circumference specified by the radius,
the alarm is not displayed and the tool path
is as follows.
The mark o indicates the end
point of arc.
&
v
/
Y 42
*--
W/c
CENTER
o--
-0
P
/
Note that if the end point is designated in the
shaded area, the alarm is not displayed and the
tool will continue to move endlessly.
The end point coordinate should be precisely
commanded when the circular interpolation is
apphed to the tool nose radius compensation, or
the tool may not move properly. Generally, it
is recommendable to calculate up to the next
digit of least input increment and count frac-
tions over 1/2 as one and disregard the rest.
3.
When the control is provided with Radius
Programming for Circular Interpolation, ra-
dius value can be commanded by G02, G03
instead of G22, G23.
EXAMPLE
a.
G03 X80,0 Z15. O 1-10.0 K-30. O F150 ;
x
I
END
‘a”aatl=?oo
I
I
z
15.00
55.00
b. G03 U40. O W-40. O 1-10.0 K-30. O F150 :
x
&
END
POINT
–40 {Jo
40.00
20.00
20.00
CENTER_~-
– 10.0(1
–30 lx)
15 0[1
z
:,500
2.8.5 DWELL (G 04)
(1) G04 U(P) . . . ;
This command interrupts feed for the length
of time designated by the address U or P.
(2) Dwell is programmed as an independent
block .
29
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