In: Advanced Math
The cutting ratio in an orthogonal cutting model is given by To/Tc = sinϕ/Cos(ϕ-α)
What is:
ϕ = ?
α = ?
Orthogonal Cutting Model
Orthogonal cutting uses a wedge-shaped tool in which the cutting edge is perpendicular to the direction of cutting speed.
Rake angle :- The rake angle α is the angle between the front or cutting face of the tool and a line perpendicular to the workpiece. In other words, the rake angle is the angle of the surface of a cutting tool tip over which the removed chips flow.
Shear plane :- As the tool is forced into the material, the chip is formed by shear deformation along a plane called the shear plane, which is oriented at an angle ϕ with the surface of the work as shown in the figure below---
The cutting ratio in an orthogonal cutting model is given by--
.
where--
ϕ = shear angle
and
α = rake angle
as shown in the figure above.
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