Plot the displacement diagram for a cam with roller follower of diameter 10 mm. The required motion is as follows; 1- Rising 60 mm in 135° with uniform acceleration and retardation motion. 2- Dwell 90° 3- Falling 60 mm for 135° with Uniform acceleration-retardation motion. Then design the cam profile to give the above displacement diagram if the minimum circle diameter of the cam is 50 mm.

A cam drive is used for a mechanism incorporated in a shoe-sewing machine.The cam follower must rise outward 0.5 in. with cycloidal motion in 0.7 s, dwellfor 0.2 s, fall 0.25 in. with cycloidal motion in 0.5 s, dwell for 0.2 s, fall 0.25 in. withcycloidal motion in 0.5 s and then repeat the sequence. Determine therequired speed of the cam and graphically plot a follower displacementdiagram.

Design a single-dwell cam to move a follower from 0 to 2 inches in 60 deg, fall 2 inches in 90 deg, and dwell for the remainder. The total cycle must take 2 seconds. Use the polynomial method to design s v a j functions. Plot the s v a j diagrams.

Draw the displacement diagram and profile of the cam operating a roller reciprocating follower and with the following data: Shaft diameter 10 mm; Minimum radius of cam 25mm; lift = 40mm; roller diameter=15mm. The cam lifts the follower for 120° with Simple Harmonic Motion (SHM) followed by a Dwell of 30° .Then follower lowers down during 150° of cam rotation with SHM followed by a Dwell period. If the cam rotates at a uniform speed of 100 RPM clockwise direction. Calculate the maximum velocity and acceleration during the ascent and descent period. Maximum Velocity and Acceleration During Ascent and Descent

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.

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°).

Design a cam to raise a valve with simple harmonic motion through 50 mm in 1/3 of a revolution,keep if fully raised through 1/12 revolution and to lower it with harmonic motion in 1/6 revolution.The valve remains closed during the rest of the revolution. The diameter of the roller is 20 mm andthe minimum radius of the cam is 25 mm. The diameter of the camshaft is 25 mm. The axis of thevalve rod passes through the axis of the camshaft. If the camshaft rotates at uniform speed of 100r.p.m. ; find the maximum velocity and acceleration of a valve during raising and lowering.