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The displayed feed rate does not match the programmed value

NC FAQ1003

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. 

Product type

FAQ Program run TNC 310 TNC 640 TNC 155 TNC 410 TNC 355 TNC 426/430 TNC 407 iTNC 530 TNC 128 TNC 620 TNC 320 Milling-turning Milling Machine control TNC 415/425
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