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Draw the profile of cam operating a roller reciprocating follower ..........

Question: 

Draw the profile of cam operating a roller reciprocating follower with the following data :

Minimum radius of cam = 25 mm

lift = 30 mm

Roller diameter = 15 mm

The cam lifts the follower for 120owith SHM followed by a dwell period of 30o. Then the follower lowers down during 150o of the cam rotation with uniform acceleration and deceleration followed by a dwell period.

Answer: 

ii) cam profile: