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Thermal Expansion

A milling cut...

Question

A milling cutter having $8$ teeth is rotating at $100 r p m$ . The workpiece feed is set at $40 m m / m i n$ the feed per tooth is

A

5 m m

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B

0.05 m m

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C

0.4 m m

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D

0.2 m m

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Solution

The correct option is B $0.05 m m$
Numer of teeth $= 8$
Feed $= 40 m m / m i n$

$Feed No.of teeth = \times feed per tooth \times r p m$

$40 = 8 \times$ feed per tooth $(f_{t}) \times 100$
$f_{t} = \frac{40}{8 \times 100} = 0.05 m m$

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