The displayed feed rate does not match the programmed value

Question:

In thread milling cycles and in the Bore Milling cycle I program a feed rate of 3000 mm/min. However, the TNC displays a much smaller feed rate even though the potentiometer is set to 100%. Why?

Answer:

The TNC is using the correct feed rate at the tool’s cutting edge. The feed rate shown always refers to the cutter’s center point path. The feed rate programmed in the cycles is in effect at the tool’s cutting edge, meaning that the feed rate displayed for the cutter’s center point path is proportionally lower, depending on the tool radius.