with simple harmonic motion from datum zero to a maximum rise in 100° of cam rotation, dwell for 80° and return with simple harmonic motion to datum zero in the remaining 180° of cam rotation. Assuming your own values for the rise, base circle
ONLY NEED PART B QUESTION c
A)
A follower for a cylindrical cam is required to travel with simple harmonic motion from datum zero to a maximum rise in 100° of cam rotation, dwell for 80° and return with simple harmonic motion to datum zero in the remaining 180° of cam rotation. Assuming your own values for the rise, base circle diameter and slot dimensions, draw a displacement diagram and suggest a layout for the cylindrical cam.
B).
a). A radial cam with a reciprocating follower is to be driven by a constant-speed motor at 150 rpm. The follower is to start from a dwell, accelerate to a uniform velocity of 25 in/s, maintain this velocity for 1.25 in of rise, decelerate to the top of the lift, return, and then dwell for 0.10 s. The total lift is to be 3.00 in. Determine the complete specifications of the displacement diagram.
b). Assuming that the displacement characteristics in part A are to be achieved by a radial cam with a reciprocating flat-face follower, determine the minimum face width and the minimum prime-circle radius to ensure that the radius of curvature of the cam is everywhere greater than ρmin = 0.25 in.
c). Assuming that the displacements determined in part A are to be achieved by a radial cam with a reciprocating radial roller follower, determine the minimum prime-circle radius that ensures that the pressure angle is everywhere less than 30◦. Evaluating above mentioned choices of cam follower types, explain the advantages and disadvantages of each application.
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