What does 'feed rate' refer to in CNC machining?

Feed rate in CNC machining refers to the speed at which the cutting tool moves across the material being machined. This measurement is crucial as it directly influences the quality of the cut, the surface finish of the machined part, and the overall efficiency of the machining process. A well-chosen feed rate helps in optimizing the cutting conditions, ensuring that the material is removed effectively while preventing tool wear and overheating.

In essence, if the feed rate is too high, it might lead to poor surface finish or excessive tool wear, whereas if it's too low, it could slow down production times and potentially result in thermal issues or altered material properties. Hence, understanding and correctly setting the feed rate is vital for successful CNC operations.