Question

A cam should be designed only using uniform rise and fall within first half of cam profile, the remaining is dwell period, and without any dwell period in between the rise-fall periods and rise and fall periods should be same. The maximum rise in follower is 35 mm. How much the follower will rise when the follower is 240 degrees from its initial position of a cam?

(a) 17.5

(b) 11.6

(c) 0

(d) 23.3

I got this question during a job interview.

The origin of the question is Cam topic in section Curves used in Engineering Practice of Engineering Drawing

Answer 1

The correct choice is (c) 0

The explanation: According to the given conditions there is the only movement in follower up to 180 degrees of shaft rotation and between it at the middle the follower make maximum rise that is at 90 degrees. So there will be no rise in the follower in the second half of cam profile.