Mechanical Engineering - Theory of machines - Discussion

Thank you all for the explanation.

Because cycloidal motion has uniform rise and return.

From the diagram of acceleration and angular displacement of cam, acceleration becomes zero when there is maximum velocity which smoothens motion in the high-velocity rise.

The graph represents of SHM that of uniformity rather than other types of profile.

@All.

I will explain where all these motions are used:

1) SHM:- In these motion, there is an infinite jerk, vibration and noise so it would be suited for low and moderate speed.

2) Constant acceleration and deceleration (parabolic) :-There are abrupt changes in the acceleration at beginning, midway and the end of the follower motion. At midway, an infinite jerk is produced. So best suited up to moderate speed.

3) Constant velocity:-Due to the infinite inertia forces, it is not suited from the practical point of view.

4) Cycloidal:- There are no abrupt changes in the velocity and the acceleration at any stage of the motion, so it is an ideal programme for high-speed follower motion.

Low and moderate speed Follows SHM.