Question

If φ is the angle of action of cam on the circular flank, and r1 is the base circle of the cam, then the maximum velocity of the follower is given by the equation.

(a) ω(R-r1)sin φ

(b) ω(R+r1)sin φ

(c) ω(R-r1)cos φ

(d) ω(R+r1)cos φ

This question was posed to me during an internship interview.

My query is from Circular Arc Cam with Flatfaced Follower topic in section Cams of Machine Dynamics

Answer 1

The correct answer is (a) ω(R-r1)sin φ

To explain I would say: The velocity of the follower is dependent of the following factors:

base circle radius, rotation speed of the cam, angle of action of cam on the circular flank and Radius of circular flank.