Reference Book
screw) meshes with a worm gear (which is similar in appearance to a spur
gear). The two elements are also called the worm screw and worm wheel.
Shaft:- A shaft is a rotating machine element, usually circular in cross section,
which is used to transmit power from one part to another, or from a machine
which produces power to a machine which absorbs power. The various parts
such as pulleys and gears are mounted on it.Levers:- A lever is a rigid body capable of rotating on a point on itself. A lever
amplifies an input force to provide a greater output force, which is said to
provide leverage.
Cams:- A cam is a rotating or sliding piece in a mechanical
linkage used especially in transforming rotary motion into
linear motion or vice versa. A cam follower is a machine
part that moves up and down in contact with a cam on a
rotating shaft.
Chain and sprocket:- Chain drive is a way of transmitting mechanical power
from one place to another. A sprocket is a wheel with teeth that mesh with a
chain.