Question:
A tool of an NC machine has to move along a circular arc from (20,20) to (10,10), while performing an operation. The center of the arc is at (20,10). Which one of the following NC tool commands performs the above mentioned operation?
A tool of an NC machine has to move along a circular arc from (20,20) to (10,10), while performing an operation. The center of the arc is at (20,10). Which one of the following NC tool commands performs the above mentioned operation?
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Use G03 for clockwise circular interpolation and G02 for counterclockwise circular interpolation in NC programming.
Updated On: Dec 26, 2025
- N020 G03 X20 Y20 X10 Y10 R10
- N020 G02 X20 Y20 X10 Y10 R10
- N020 G02 X10 Y10 X20 Y20 R10
- N020 G01 X20 Y20 X10 Y10 R10
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The Correct Option is A
Solution and Explanation
In NC (Numerical Control) machining, the movement of the tool is commanded using G-codes. For circular motion:
- G03 is used for clockwise circular interpolation.
- G02 is used for counterclockwise circular interpolation.
- R represents the radius of the circular arc.
In this case, the tool needs to move from the point (20,20) to (10,10), with the center of the arc being at (20,10). Since the movement is along a circular arc, and given that the center of the arc is specified, the G03 code for clockwise circular interpolation is used. Therefore, the correct command is: \[ \text{N020 G03 X20 Y20 X10 Y10 R10} \] Thus, the correct answer is (A).
- G02 is used for counterclockwise circular interpolation.
- R represents the radius of the circular arc.
In this case, the tool needs to move from the point (20,20) to (10,10), with the center of the arc being at (20,10). Since the movement is along a circular arc, and given that the center of the arc is specified, the G03 code for clockwise circular interpolation is used. Therefore, the correct command is: \[ \text{N020 G03 X20 Y20 X10 Y10 R10} \] Thus, the correct answer is (A).
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