1. G Function Description
3. how to use R:
When θ≦180 degree, R is positive.
G02
G03
X_
Y_
R25.0;
When 180 degree＜θ＜360 degree, R is negative.
G02
G03
X_
Y_
R 25.0;
When θ=360 degree, only use I、J、K.
Start point
Center #2
Center #1
Arc α ≦180.
(R positive)
α ≦180
∘
α ＞180
∘
Arc α ＞180.
(R negative)
Program example 1:
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G90 G00 X5500 Y4000;//positioning to start point of arc
G17 G90 G03 X1500 Y4000 I-3000 J-1000 F200;
//absolute command
(G17 G91 G03 X-4000 Y2000 I-3000 J-1000 F200;
//increment command)
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