What does the term 'feed' refer to in machining?

The term 'feed' in machining specifically refers to the rate at which the cutting tool moves or travels along the surface of the workpiece during the machining process. This is a critical parameter because it directly affects the material removal rate, surface finish, and tool wear. By controlling the feed rate, machinists can optimize these factors to achieve the desired machining outcome. A properly selected feed rate ensures efficient cutting without causing excessive wear on the tool or damage to the workpiece.

Other aspects of machining, such as vertical movement of the tool, the direction of tool approach, and tool rotation speed, are also important, but they pertain to different parameters and do not define the term 'feed.' The vertical movement relates to the depth of cut, the direction addresses how the tool engages with the workpiece, and tool rotation speed impacts the cutting action itself but does not specifically define 'feed.' Understanding the precise meaning of feed is essential for effective machining operations.