Direction: In an orthogonal cutting experiment, an HSS tool having the following tool signature in the orthogonal reference system (ORS) has been used: 0-10-7-7-10-75-1 Given: Width of cut = 3.6 mm, Shear strength of workpiece material = 460 N/mm²; Depth of cut = 0.25 mm; Coefficient of friction at chip tool interface = 0.7.
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Minimum power requirement (in kW) at a cutting speed of 150 m/min is
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- 2.5
- 3.25
- 3.35
- 3.45
Correct Option: B
| Fs = | sinφ |
| sin32.5 |
Fs = 770N
| = | Fs | R(cos(φ + β - α)) |
Fc = 1299 N
Power = Fc × V
| = | 60 |
Power = 3.25kW
