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 material is fed into the cutting tool during operation. This is a critical parameter because it directly affects the efficiency of the machining process, the quality of the finished part, and tool wear. The feed rate determines how quickly the tool advances into the material, and it needs to be correctly set to optimize cutting conditions.

In contrast to the definition of feed rate, the speed of the spindle rotation is a separate metric, indicating how fast the cutting tool itself is spinning. The distance the tool moves per revolution pertains to how much material is engaged with the tool during each revolution, which is related but not the same concept. The amount of material removed per minute reflects the productivity of the process but does not define the feed rate itself. Understanding the correct definition of feed rate is essential for anyone involved in CNC machining, as it influences the overall manufacturing process.