Fagor 8025 T CNC, Руководство по эксплуатации

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22 8025/8030 CNC PROGRAMMING MANUAL
6.6. G09. ARC PROGRAMMED BY THREE POINTS
By means of the G09 function a circular path (arc) may be defined, by programming the
end point and an intermediate point (the initial point of the arc is the starting point of the
movement).
In other words, an intermediate point is programmed instead of the center. This feature can
be useful when a part is programmed in PLAY BACK and after writing G09 in the block
the machine can be manually shifted to the intermediate point of the arc and press ENTER.
Then to the final point and press ENTER. In this way, the block will be stored in the
memory.
Cartesian coordinates (XZ plane)
N4 G09 X+/-4.3 Z+/-4.3 I+/-4.3 K+/-4.3
N4 : Block number.
G09 : Code identifying 3 point arc definition.
X+/-4.3 : X value of the arc’s final point.
Z+/-4.3 : Z value of the arc’s final point.
I+/-4.3 : X value of the intermediate point.
K+/-4.3 : Z value of the arc’s intermediate point
Polar coordinates (XZ plane)
N4 G09 R+/-4.3 A+/-4.3 I+/-4.3 K+/-4.3
N4 : Block number.
G09 : Code identifying 3 point arc definition.
R+/-4.3 : Radius (referred to polar origin) of the final point of the arc.
A+/-4.3 : Angle (referred to polar origin) of the final point of the arc.
I+/-4.3 : X value of the intermediate point.
K+/-4.3 : Z value of the arc’s intermediate point
The intermediate point must always be programmed in cartesian coordinates.