What does the term "feed rate" refer to in CNC machining?

The term "feed rate" in CNC machining specifically refers to the speed at which the tool engages the material being cut. It is a crucial parameter that determines how quickly the tool advances through the workpiece. A higher feed rate means the tool moves faster, impacting production efficiency, surface finish, and tool wear. Adjusting the feed rate can directly affect the cutting performance, load on the tool, and overall machining quality.

The other choices do not accurately describe feed rate. The distance moved with each rotation relates more to the depth of cut or pitch, the time taken for the entire machining operation pertains to cycle time, and the rate of power consumption concerns energy efficiency, rather than the physical movement of the cutting tool through the material. Understanding feed rate is essential for optimizing machining processes and achieving desired results in CNC operations.