Question

Which of the following statements is NOT correct. with regard to milling machines?
1. They perform operations with high.accuracy.
2. These machines are famous for their better surface finishing.
3. They can hold more than one cutter at a time.
4. They have a lower rate of metal removal compared to other similar machines, such as a shaper.

Answer 1

Correct Answer - Option 4 : They have a lower rate of metal removal compared to other similar machines, such as a shaper.

Explanation:

Milling:

• It is a machining process where the cutting tool carries out a rotary motion and the workpiece a rectilinear motion.
• The process is used to machine external surfaces, slots, and contoured surfaces using multitoothed milling cutters or end mills. Milling cutters are also available for cutting surfaces of revolution, cutting off metals, machining threads, and cutting gears.

Characteristics of milling:

• They perform operations with high accuracy
• They can hold more than one cutter at a time
• These machines are famous for their better surface finishing
• The high Material removal rate