Theory of Mechanism and Machine I

A cam drives a flat reciprocating follower in the following manner: During first 120° rotation of cam, the follower moves outwards through a distance of 20 mm with simple harmonic motion. The follower dwells during next 30° of cam rotation. During next 120° of cam rotation, the follower moves inwards with uniform velocity motion. The follower dwells for next 90° of cam rotation. The minimum radius of the cam is 25 mm. Draw the profile of the cam. Determine the maximum acceleration of the follower when the cam shaft rotates at 100 rpm and sketch the acceleration profile nature.