Cam 1, a round eccentric, rotates about fixed axis A. located at the distance e from geometrical centre a of the cam. Follower 2 reciprocates In fixed guides B-B and has yoke b consisting of two flat faces d and two c i rcular p o rtions c. When cam 1 rotates, follower 2 has harmonic motion according to the equation s₂=e*sin(φ) where s₂ is the displacement of follower 2, e Is the eccentricity of cam 1 and φ is the angle of cam rotation. The corresponding velocity and acceleration of the follower are v₂=ωe*cos(φ) and a₂=-ω²e*sin(φ) where ω is the angular velocity of cam 1. Follower 2 has in stantaneous dwells when cam 1 contacts portions c of yoke b. Positive motion Is achieved because the diameter of cam 1 equals the distance between flat faces d (breadth) of yoke b.
$2982$SmC,3L$