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Which of the following screw thread is used for lead screw of lathe?

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+1 vote
in Machine Kinematics by (38.0k points)
Which of the following screw thread is used for lead screw of lathe?

(a) square thread

(b) trapezoidal threads

(c) buttress threads

(d) V threads

I had been asked this question in semester exam.

This intriguing question comes from Friction of a V-thread topic in chapter Friction of Machine Kinematics

1 Answer

0 votes
by (106k points)
Correct choice is (b) trapezoidal threads

For explanation: The square threads are employed in screw jacks, presses and clamping devices.

             For lead screw of lathe, trapezoidal threads are used.

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