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Unformatted text preview: F t F n F c F s Shear angle ) cos( sin / ) cos(+= bA F C solution • From t1 and t2 get the chip thickness ratio and calculate the shear angle φ tanφ = r t cos α / (1 r t sin α) r t = t1/t2 • From the power and the speed get the cutting force Fc Power = Fc speed • From the shear angle and the rake angle get the friction angle τ • From the friction angle calculate the friction coefficient µ 2 / 2 / 4 / α τ π φ += N F = = μ tan Cont. • From the friction coefficient and the cutting force calculate the trust force from: Ft = (µ Fc  Fc tanα) /(1+ µ tanα) α μ tan tan t c c t F F F F+ = • Calculate Fs from: • Calculate the dynamic shear stress Sd from Sd = Fs/As As = w t1/sinφ φ sin cos t c s F F F=...
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 Winter '08
 Brown
 Force, Shear, Stress, shear angle, Fc Ft Fn, Fs Fc, dynamic shear stress

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