In a shaping process, the number of double strokes per

Home » Materials Science and Manufacturing Engineering » Materials Science and Manufacturing Engineering Miscellaneous » Question

In a shaping process, the number of double strokes per minute is 30 and the quick return ratio is 0.6. If the length of the stroke is 250 mm, the average cutting velocity in mm/min.

1. 3.0
2. 4.5
3. 7.5
4. 12.0

Correct Option: D

Number of Double stroke = 30
Quick Return Ratio = 0.6 = M
Length of Strike = 250 mm = L
Average cutting velocity = L.N (1 + 19)
= 30 × 250 (1 + 0.6) = 12 m /min