Topic: Machining and Machine Tool Operations
A milling cutter having 8 teeth is rotating at 150 RPM. If the feed per tooth is 0.1, the table speed in mm per minute is
- A. 120
- B. 187
- C. 125
- D. 70
Answer: A. 120
Explanation: The table speed (or feed rate) is given by the product of the feed per tooth ($f_t$), the number of teeth ($z$), and the rotational speed ($N$). Substituting the given values: Table speed = $0.1 \times 8 \times 150 = 120$ mm/min.