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A cutting tool has a nose radius of 1.8 mm the feed rate for a theoretical surface roughness of Rt = 5 microns is
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- 0.268 mm/rev
- 0.187 mm/rev
- 0.036 mm/rev
- 0.0187 mm/rev
- 0.268 mm/rev
Correct Option: A
Nose Radius = 1 – 8 mm, f =? Rt = 5 microns (Peak to valley height.)
| 0.005 = | ||
| 8Rt |
f = √0.005 × 8 × 1.8 = 0.268 mm / rev
