Tumbler gear mechanism is used to change the direction of lead screw and feed rod in lathe machines. By Engaging tumbler gear, the carriage can be moved automatically from tailstock end to headstock
8) Tumbler gear quadrant is used for
Answer is:
Changing the direction of rotation of the lead screw
Explanation:
Related Lathe MCQ - Machinist(Set-1) with Answers
Answer is:
Just below the nose of the headstock spindle
Explanation:
Gap or extension-type lathes are similar to toolroom lathes except that gap lathes can be adjusted to machine larger diameter and longer workplaces The operator can increase the swing by moving the bed a distance from the headstock, which is usually one or two feet.
In a gap bed lathe, the gap is provided just below the nose of the headstock spindle.
Answer is:
Ball centre
Explanation:
Ball centre is sometimes used for tapering by the "set-over tail stock" method. The standard centres cannot sit squarely in the center hole when the tail stock is set over.
Answer is:
Swiveling the compound rest
Explanation:
Swivelling the compound rest method is used for cutting steep taper.
Answer is:
Mandrel
Explanation:
Mandrel is used to hold the work-piece for machining diameter concentric to its hole or bore.
