Cutter radius compensation (CRC) moves a tool by affecting which aspect of the tool?

Cutter radius compensation (CRC) moves a tool by affecting which aspect of the tool?

• A. The tool's dimensions change
• B. Spindle speed changes
• C. The feed rate changes
• D. The workpiece origin shifts

Answer: (A)

Cutter radius compensation works by offsetting the programmed tool path by the cutter’s radius, so the actual cutting edge follows the desired contour even though the tool itself is a different size. In practice, the control uses a different tool radius in its calculations, effectively changing the dimensions it uses for path generation. The spindle speed, feed rate, and workpiece origin are not altered by CRC, they remain as programmed. So the effect is that the tool’s dimensions (as used by the CNC to compute the path) are changed to match the intended geometry.

Cutter radius compensation works by offsetting the programmed tool path by the cutter’s radius, so the actual cutting edge follows the desired contour even though the tool itself is a different size. In practice, the control uses a different tool radius in its calculations, effectively changing the dimensions it uses for path generation. The spindle speed, feed rate, and workpiece origin are not altered by CRC, they remain as programmed. So the effect is that the tool’s dimensions (as used by the CNC to compute the path) are changed to match the intended geometry.