Which term describes the distance advanced by the cutting tool for each revolution of the spindle?

The correct term that describes the distance advanced by the cutting tool for each revolution of the spindle is "Feed." In machining processes, feed refers to the linear distance that the cutting tool moves in relation to the workpiece during one complete rotation of the spindle.

Understanding the concept of feed is crucial in manufacturing, as it directly affects the efficiency of the cutting process, surface finish, and tool wear. A higher feed rate can reduce machining time but may lead to lower surface quality or increase the wear on the tool due to higher material removal rates. Conversely, a lower feed rate typically results in finer finishes but can increase machining time.

The other terms relate to aspects of machining but do not accurately define the distance moved by the cutting tool per spindle revolution. Speed typically refers to the rotational speed of the spindle, pitch usually describes the distance between threads in a screw or the angular advance of the tool, and depth refers to how deep the cut penetrates into the workpiece. Each of these has its own significance in machining, but none describe the specific distance moved by the tool as it relates to spindle rotation like feed does.