GSK 980MDc, User Manual

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Chapter 3 G Command
33
I Programming
Arc interpolation in XZ plane, Y axis linear interpolation linkage;
Arc interpolation in YZ plane, X axis linear interpolation linkage;
Function: Only two axes of circular interpolation can be linked for controlling tool movement along with the
arc on the selected plane in any time. If the 3rd axis is specified simultaneously in linear
interpolation mode, it will be linked by linear interpolation type to constitute helical interpolation.
G02 movement path is CW from start to end points. G03 movement path is CCW from start to
end points.
Explanation:
G02 and G03 are modal G commands;
R is an arc radius, its value
：
-99999999
～
99999999×least input increment
；
When the circle center is specified by address I, J and K, they are corresponding with the X, Y and Z
axes separately.
I is the difference between the center point and the arc start point in the X axis direction, I= center
point coordinate X- X coordinate of arc start point; its value
：
-99999999
～
99999999×least input
increment;
J is the difference between the center point and the arc start point in the Y axis direction, J=center
point coordinate Y- Y coordinate of circle arc start point; its value
：
-99999999
～
99999999×least input increment ;
K is the difference between the center point and circle start point in the Z axis direction, K=center
point coordinate Z- Z coordinate of circle start point; its value ： -99999999 ～ 99999999×least input
increment.
Note
：
When I, J and K are for whole-circle that they have signs according to the direction. And they are positive
values when I, J and K share the same directions with X, Y and Z axes; otherwise they are negative ones.
Item Specified content Command Meaning
G17 Specifying XY plane arc
G18 Specifying ZX plane arc
1 Plane specification
G19 Specifying YZ plane arc
G02 CW
2 Rotating direction
G03 CCW
G90 mode Two axes of X, Y and Z
End point in the part
coordinate system
3 End point
G91 mode Two axes of X, Y and Z Distance from start to end points