cam is to give the following motion to a knife-edged follower: Outstroke during 75° of cam rotation; 2. Dwell for the next 60° of cam rotation; Return stroke during the next 80° of cam rotation, and 4. Dwell for the maining 145° of cam rotation. The stroke of the follower is 30 mm and the inimum radius of the cam is 40 mm. The follower moves with uniform velocity iring both the outstroke and return strokes. Draw the profile of the cam when ) the axis of the follower passes through the axis of the camshaft, and (b) the is of the follower is offset by 25 mm from the axis of the camshaft. Determine e maximum velocity and acceleration of the follower during its ascent and escent, if the cam rotates at 250 r.p.m. Draw the displacement, velocity and celeration diagrams for one complete revolution of the cam

A plate cam with a reciprocating radial roller follower is to be designed such that the displacement of the follower is Y = 15(1-cos 20) mm. The prime-circle radius is to be RO = 40 mm, and the roller is to have a radius of Rr 12 mm. The cam rotates counterclockwise. For the cam rotation angle © = 30-, determine the following: (a) The coordinates of the point of contact between the cam and the follower in the rotating coordinate system. (b) The radius of curvature of the cam profile. (c) The pressure angle of the cam

Draw the cam clearly

1. A cam must rise in 3 seconds at constant velocity of 0.25 in/sec in the first segment. Then the follower must return to the zero position in 5 seconds with a full return cycloidal motion and then dwell for 3 seconds in segment 3. The final segment will be a full rise cycloidal motion. The total cycle time is 12 seconds, and the maximum height is in the first segment. Full return cycloidal motion 1 y = L + sin 2π Full rise cycloidal motion y = L sin Determine the following: The cam angular velocity. b. The cam rotation segment widths, B1 c. The lift (height) of the constant velocity segment. а. B4 , in degrees. Round off to nearest degree. d. The height at 0 = 180° е. The peak cam linear velocity V(t)peak with zero angular acceleration in segment 4.

A cam have the following specifications: Follower to move outward through 5 cm during 90° of cam rotation, it dwells for the next 60°. The follower then return to its original position through an angle 0R and then dwell for the rest of the cam rotation of 110°. The displacement of the follower is to take place with constant speed motion during both the outward and return strokes. The least radius of the cam is 4 cm. If the cam rotates at 300 r.p.m., construct the displacement, velocity and acceleration diagrams. Also determine The displacement, velocity, acceleration and the pressure angle for the following angles (40°, 75°, 145°, 200°).

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