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 Apparatus is a
motorized unit consisting of a camshaft driven by a variable speed motor.
The shaft runs in a double bearing. The free end of the camshaft has a
facility to mount the cam easily.
The follower is properly guided in gunmetal
bushes and the type of follower can be changed according to the cam under
test. Graduated circular protractor is fitted co-axial with the shaft. And a
Dial Gauge fitted on the follower shaft is used to note the follower
displacement for the angle of cam rotation. A spring is used to provide
controlling force to the follower system. Weights on the follower shaft can
be adjusted as per the requirement. An arrangement is provided to regulate
the speed. The apparatus is very useful for testing the cam performance for
jump phenomenon during operation. On this apparatus the effect of change of
inertia forces on jump action of cam-follower during operation can be
observed. It is useful for testing various cam & follower pairs. Three cams
and three followers will be supplied with the apparatus. Theses are already
hardened to reduce the wear.
SCOPE OF EXPERIMENTATION:
With the help of combination of provided
cams and followers following experiments can be conducted:
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To plot the n-q (Follower
displacement Vs Angle of rotation) curves for different cam follower pairs
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The follower bounce can be observed
by using a stroboscope (Optional) & effect of follower weight on bounce
can be studied.
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To study the effect of follower
weight on bounce.
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To study the effect of spring
compression on bounce.
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The tests can be repeated by
changing compression springs, follower weights and cam speed.
UTILITIES REQUIRED:
TECHNICAL DETAILS:
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Cam Shaft
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Cams
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Followers
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Compression Spring
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Weights
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Motor
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Dial Gauge
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