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Surface Finish in Machining Part - II

A 60 deg symm...

Question

A $60 d e g$ symmetrical $V$ tool is used in shaping at workpiece with a depth of cut of $0.1 m m$ and feed of $0.1 m m / s t r o k e .$ The theoretical peak to valley height, in $m m$ , of the surface produced is

A

0.043

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B

0.067

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C

0.086

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D

None of these

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Solution

The correct option is C $0.086$

$t a n 30^{o} = \frac{0.05}{R_{t}}$
$\Rightarrow R_{t} = \frac{0.05}{t a n 30}$
$= 0.086 m m = 86 m i c r o n s$

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