Experiment No.4
Objective:
To perform four
Bar Link Mechanism.
Apparatus:
Connecting Rod,
Crank.
Procedure:
Set the
equipmwnt for the experiment of four linked bar mechanism.
Adjust the angle
of the circle of the crank at zero degree and measure the corresponding value
of angle on the 2nd scale.
Twist the angle
of the circle at 20° and measure the value of angle in degree on the 2nd
scale.
Repeat the above
process by increasing 20° of the angle of circle until 360° and plot a
graph b/w both the angular measurements.
Theory:
Four bar link mechanism:
A
four bar link mechanism also called four bar linkage, is the simplest movable
closed chain linkage.
It
consists of four bodies called bars or links , connected in a loop by four
joints, generally, the joints are configured so the links move in parallel
planes, and the assembly is called a planer link bar.
A four-bar linkage,
also called a four-bar, is the
simplest movable closed chain linkage. It consists of four bodies,
called bars or links, connected in a loop by four joints. Generally, the joints
are configured so the links move in parallel planes, and the assembly is called
a planar four-bar linkage. If the linkage has four hinged joints with axes angled to intersect in a single point, then the links move on concentric spheres and the assembly is called a spherical four-bar linkage. Bennett's linkage is a spatial four-bar linkage with hinged joints that have their axes angled in a particular way that makes the system movable
Graph:
Conclusion:
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