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A cam drive is required for a shaker platform. This platform is used to test the shipping-worthiness of packaged items. The cam follower must rise outward 1.0 in. with contant acceleration in 0.7 sec, dwell for 0.2 sec, fall with constant acceleration in 0.5 sec, and then repeat the sequence. Determine the following for the given problems: 1. Calculate the time for a full cycle 2. Calculate the required rotational speed of the cam 3. Determine the cam rotation for each follower motion interval 4. Plot the displacement diagram

Draw the cam profile for a knife-edge follower having the followingmotion: rise 50 mm during 150 deg turn with gravitational motion, dwell for 30deg, fall 50 mm during 150 deg turn with gravitational motion, and dwell for 30deg. Use 100 mm base circle. Cam rotates clockwise. Scale 1:1

Problem: A cam is to be used for a platform that will repeatedly lift boxes from a lower conveyor to an upper conveyor. Plot a displacement diagram and determine the required speed of the cam when the follower motion sequence is as follows: 1. Rise 1.5 in. in 1 s. 2. Dwell for 0.9 s. 3. Fall 1 in. in 0.5 s. 4. Rise 0.5 in. in O.4 s. 5. Dwell 0.6 s. 6. Fall 1 in. in 0.7 s. Find: 1. Calculate the Time for a Full Cycle 2. Calculate the Required Rotational Speed of the Cam 3. Determine the Cam Rotation for Each Follower Motion Interval 4. Plot the Displacement Diagram.

Answer d and e

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°).

Explore the profile of a disc cam to give uniform velocity during outstroke of 25 mm to a knife edge follower during the first half of the cam revolution. The return of the follower also takes place with uniform velocity during the remaining half of the cam revolution. Shaft diameter is 25 mm. The axis of the knife edge follower passes through the axis of the cam. The cam is rotating with constant rpm.

flat faced reciprocating follower has the following motion:a) The follower moves out for 80° of cam rotation with uniformacceleration and retardation, the acceleration being twice theretardation.b) The follower dwells for the next 80° of cam rotation.c) It moves in for the next 120° of cam rotation with uniformacceleration and retardation, the retardation being twice theacceleration.d) The follower dwells for the remaining period.The base circle diameter of the cam is 60 mm and the stroke of thefollower is 20 mm. The line of movement of the follower passes throughthe cam centre.Draw the displacement diagram and the profile of the cam very neatlyshowing all constructional details.

A disc cam is to give uniform motion to a knife edge follower during out stroke of 50 mm during the first half of the cam revolution. The follower again returns to it's original position with uniform motion during the next half of the revolution. The minimum radius of the cam is 50 mm and the diameter of the cam shaft is 35 mm. 1.Draw the fully defined displacement diagram of the follower. 2.Draw the profile of the cam when the axis of the follower passes through the axis of the cam shaft.

Construct a single dwell cam with roller follower with the following conditions: 0 degrees to 60 degrees - dwell 60 degrees to 150 degrees - 30 mm rise 150 degrees to 210 degrees - dwell 210 degrees to 360 degrees - return motion Choose your own size for the prime circle diameter and the roller follower.You can use any possible combination of motion that conforms with the fundamental law of cam design.

Please Help with (a) to (d) A follower is required to rise through a total displacement of 8 inches in 110° of cam rotation and dwell at 8 inches for 40 °, Then the follower should return to the zero position in 130° and finally dwell for 80° before repeating the cycle. a. Select displacement Functions that result in a smooth transition across the boundaries for the displacement. b. Determine the range and Beta for each segment. c. In an Excel spreadsheet, determine the displacement heights in each of the above segments for a range of 0≤0≤360° in 10° increments. d. Discuss the effect of the velocity and acceleration at the boundaries.

Draw the profile of a cam operating a roller reciprocating follower and with the following data: Minimum radius of cam =25 mm; lift=30mm; Roller diameter= 15mm. The cam lifts the follower for 120° with SHM, followed by a dwell period of 30. Then the follower lowers down during 150° of cam rotation with uniform acceleration and retardation followed by a dwell period. If the cam rotates at a uniform speed of 150 RPM. Calculate the maximum velocity and acceleration of follower during the descent period