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Analysis of Orthogonal Machining

During orthog...

Question

During orthogonal cutting of $M S$ with a $10 d e g$ rake angle tool, the chip thickness ratio was obtained as $0.4$ . The shear angle (in degrees) evaluated from this data is

A

6.53

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B

20.22

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C

22.94

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D

50.00

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Solution

The correct option is C $22.94$
$α = 10^{o}, r = 0.4$

The shear plane angle:
$ϕ = t a n^{- 1} (\frac{0.4 c o s 10^{o}}{1 - 0.4 s i n 10^{o}}) = {22.94}^{o}$

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