Q82
The lead screw of a lathe has _________ threads.
A.
Single start
AnswerB.
Double start
C.
Multi-start
D.
Any one of these
Answer: Option A
Solution
Answer: Option A
Solution:
A single-start thread has one continuous thread running along the body of the screw
A trapezoidal thread is used in the leadscrew of lathe machine.
It has a 30 degree included angle.
Stronger at the root.
Easy to manufacture compared to square thread.