Manufacturing Technology: Unit I: Mechanics of Metal Cutting

work done and power required in cutting

Mechanics of Metal Cutting - Manufacturing Technology

Let V - Cutting speed (m/s) Fz = Cutting force, N Work done in cutting, W = Fz × V N-m/s or W Work done in shear, Ws = Fs × Vs

WORK DONE AND POWER REQUIRED IN CUTTING

Let

V - Cutting speed (m/s)

Fz = Cutting force, N

Work done in cutting, W = Fz × V N-m/s or W

Work done in shear, Ws = Fs × Vs

where

Vs = Velocity of chip relative to work in m/s

Fs = Shear force in N

Work done in friction, Wf = P × Vc

where

Vc - Velocity of chip relative to the cutting tool in m/s

P - Frictional force

Total work done,

W = Ws + Wƒ


Horse power used in metal cutting is estimated by measuring the gross horse power (HP)g and tare horse power (HP)t.


Manufacturing Technology: Unit I: Mechanics of Metal Cutting : Tag: : Mechanics of Metal Cutting - Manufacturing Technology - work done and power required in cutting