Mechanics of metal cutting

TERMINOLOGY
 α : Rake angle F: Frictional Force
 b : Frictional angle  N: Normal Frictional Force
 ϕ : Shear angle  V: Cutting velocity
 Ft : Thrust Force Vc: Chip velocity
Fc: Cutting Force Vs: Shear velocity

Fs: Shear Force
 Fn: Normal Shear Force

, ‘Facing’ Forces For Orthogonal Model
Velocity of F C Tangential Force
Tool relative to 'Cutting' Force
DIRECTION OF ROTATION workpiece V

WORKPIECE
Fr Radial Force
‘Thrust’ Force

FL
Longitudinal Force




CUTTING TOOL

DIRECTION OF FEED


Note: For the 2D Orthogonal Mechanistic
Model we will ignore the Longitudinal
component End view