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G02 and G03
Format
G02
{
}
G17
[X x ][Y y ]
G03
G02
{
}
G18
[X x ][Z z ]
G03
G02
{
}
G19
[Y y ][Z z ]
G03
Parameter
x
y
z
cx
cy
cz
radius
Description
This cuts an arc at the specified feed rate and spindle speed from the current tool position to the specified point. Circular interpolation
can be carried out only on the X-Y plane, Z-X plane, or Y-Z plane.
The specification for the two-dimensional plane is made with G17, G18, or G19. These specify the X-Y plane, Z-X plane, and Y-Z
plane, respectively. The specification for the X-Y plane is enabled when the machine's power is switched on.
To specify the destination point for interpolation, use is made of addresses X and Y for G17, X and Z for G18, and Y and Z for G19.
The center point for the arc is specified with addresses I and J for G17, I and K for G18, and J and K for G19. I, J, and K always specify
the movement distance (incremental value) to the centerpoint of the circle or arc, with no regard for G90 or G91. It is also possible to
specify the radius R for the arc instead of using I, J, or K.
When the point of the current tool position is specified as the destination for interpolation, a circle with a center angle of 360° is cut.
G02 and G03 differ in the direction of interpolation for the arc (i.e., the direction of tool movement). G02 performs clockwise circular
interpolation, whereas G03 performs counterclockwise interpolation.
+X
22
[I cx ][J cy ]
{
}
R radius
[I cx ][K cz ]
{
}
R radius
[J cy ][K cz ]
{
}
R radius
Function
Coordinate or movement distance (X axis)
Coordinate or movement distance (Y axis)
Coordinate or movement distance (Z axis)
Movement distance to circle (arc) center (X axis)
Movement distance to circle (arc) center (Y axis)
Movement distance to circle (arc) center (Z axis)
radius
+Z
Clockwise
Counterclockwise
Circular Interpolation
Acceptable range
+Y
X
Effective range
Range 1
Maximum cutting range
Range 1
Maximum cutting range
Range 1
Maximum cutting range
Range 1
Maximum cutting range
Range 1
Maximum cutting range
Range 1
Maximum cutting range
Range 3
Maximum cutting range
Z
G02
G03
G02
G02
G03
G03
Y
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