Red Seal Machinist Practice Exam

Which measurement term describes the total angular movement of a tool during a milling operation?

1. Feed rate

2. Revolution

3. Speed

4. Stroke

The correct answer is: Revolution

The term that describes the total angular movement of a tool during a milling operation is revolution. In milling operations, a tool is rotated around its axis, and one complete rotation is referred to as one revolution. This measurement is crucial for understanding how the tool interacts with the workpiece, as it dictates the cutting action, the material removal rate, and the overall efficiency of the milling process. In context, other terms such as feed rate, speed, and stroke refer to different aspects of machining. Feed rate pertains to how fast the workpiece is fed into the tool, speed can refer to the rotational speed of the tool (often measured in RPM), and stroke generally relates to linear motion of a tool or component, particularly in applications like sawing or drilling, rather than the angular movement involved in milling. Thus, revolution accurately captures the essence of the angular displacement during the milling process.