10.4.G03 – Circular Interpolation (Counter Clockwise)
This command describes a circular motion in a counter clockwise direction. The arc starts at the current position and the center is defined by the I, J values as an offset of the current position or R for radius. The X & Y values define the finish point.
Syntax & Parameters
G03 starts an arc movement beginning at the X & Y coordinate location where the G03 was issued.
X Value – This is the X coordinate defining the end point
Y Value – This is the Y coordinate defining the end point
I Value – are relative coordinates and define the X center coordinate as an offset of the starting point X coordinate.
J Value – are relative coordinates and define the Y center coordinate as an offset of the starting point Y coordinate.
Z Value – The addition of a Z value will describe a helical move.
R Value – Is used to define the arc radius.
Example program for making an Arc
N10 G00 X40 Y30 Z-1 N20 G02 X50 Y20 I10 J10
- In the above example in the first line moves to position X40 Y30 Z-1
- An arc is made starting at position X40 Y30 and ending at coordinate X50 Y20 with centre at position X50 Y30 moving in a clockwise direction. The Z height does not change.
- The Arc centre is calculated as follows
- Starting position X40 + I10 = Center X coordinate X50
- Starting position Y30 + J0 = Center Y coordinate X30
Note: Units are defined as either inches or mm depending on your machines setup or G20 or G21 command in use.
1 of 1 users found this section helpful