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Surface Finish in Machining Part - II

A tool with s...

Question

A tool with side cutting edge angle of $30^{o}$ and end cutting edge angle $10^{o}$ is used for fine turning with a feed of $1 m m / r e v$ . Neglectign nose redius of the tool, the maximum (peak of valley) height of the surface roughness produced will be

A

0.16 m m

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B

0.26 m m

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C

0.32 m m

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D

0.48 m m

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Solution

The correct option is A $0.16 m m$
$h_{m a x} = \frac{1}{t a n (S C E A) + c o t (E C E A)}$
$\Rightarrow h_{m a x} = \frac{1}{t a n 30^{o} + c o t 10^{o}} = 0.16 m m$

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