For high speed engines, the cam follower should move with
Uniform
velocity
Cycloidal
motion
Simple
harmonic motion
Uniform
acceleration and retardation
Cycloidal
motion
The
follower should move with cycloidal motion in case of high speed cams because
in cycloidal displacement program, it is observed that, there are no abrupt
changes in the velocity and the acceleration at any stage of the motion. Thus, it
is the most ideal program for high speed engines.
Hence, the correct option is (B).
&Key Points:-
●In
Simple Harmonic Motion (SHM) of follower, abrupt change of acceleration results
in infinite jerk, vibration and noise, so it is used only for low or moderate
cam speeds.
●Constant
acceleration and deceleration is adopted only up to moderate speed.
●Constant velocity of the follower is not suitable from practical point of view.
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