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Thread Cutting Part-IV

For cutting d...

Question

For cutting double start screw threads of pitch $1.0 m m$ on a lathe, the thread cutting tool should have a feed rate of

A

0.5 m m / r e v

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B

1.0 m m / r e v

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C

2.0 m m / r e v

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D

4.0 m m / r e v

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Solution

The correct option is C $2.0 m m / r e v$
Feed in thread cutting $=$ lead of threads
$=$ number of starts $\times$ pitch
$= 2 \times 1.0 = 2 m m / r e v$

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