In milling, which statement describes the operation?

In milling, which statement describes the operation?

• A. The cutter rotates and removes material from a stationary workpiece.
• B. The workpiece rotates and the cutter is stationary.
• C. Both rotate the workpiece and the cutter.
• D. It is only used for plastics.

Answer: (A)

In milling, the cutting action is produced by a rotating cutter that removes material as it feeds across a fixed workpiece. The workpiece is held stationary (in a vice or fixture) while the high-speed cutter removes material to shape the part. This distinguishes milling from turning, where the workpiece itself rotates and the cutter is relatively stationary. While you can set up special machines where both parts move, the standard operation described here is a rotating cutter removing material from a stationary workpiece. Milling isn’t limited to plastics; it’s used on metals, plastics, wood, and other materials.

In milling, the cutting action is produced by a rotating cutter that removes material as it feeds across a fixed workpiece. The workpiece is held stationary (in a vice or fixture) while the high-speed cutter removes material to shape the part. This distinguishes milling from turning, where the workpiece itself rotates and the cutter is relatively stationary. While you can set up special machines where both parts move, the standard operation described here is a rotating cutter removing material from a stationary workpiece. Milling isn’t limited to plastics; it’s used on metals, plastics, wood, and other materials.