Consider the following statements:1. For a radial-translating roller follower,parabolic motion of the follower is verysuitable for high speed cams.2. Pitch point on pitch circle of a camcorresponds to the point of minimumpressure anglewhich of the statements given above is/arecorrect ?(b) 2 only(a) 1 only(c) Both 1 and 2(d) Neither 1 nor 2

Answered: Image /qna-images/answer/ef41a006-98bc-4057-bce5-42ed25e2316f.jpg

Answered: Consider the following statements: 1.…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Q1) Following is the data for a circular arc cam working with a flat faced reciprocating follower : Minimum radius of the cam 28.5 mm; Total angle of cam action = 110° ; the lift of the follower is 13 mm, Radius of the circular arc = 80 mm ; Nose radius = 3 mm. 1. Find the distance of the Radius of the circular arc ; 2. Draw the profile of the cam to full scale; 3. Find the angle through which the cam turns when the point of contact moves from the junction of minimum radius arc and circular arc to the junction of nose radius are and circular arc 4. Find the velocity and acceleration of the follower when the cam has turned through an angle of 10°.( The angle is measured from the point where the follower just starts moving away from the cam.) The angular velocity of the cam is 200 rpm.
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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
Draw a Cam with uniform motion of follower based on the following data. 45 mm minimum diameter of Cam, 50 mm lift (rise) with uniform velocity, 0º to 90º Rise, 90º to 180º Top dwell, 180º to 270º Fall, 270º to 360º bottom dwell, clockwise rotation. The diameter of Cam Shaft hole is 25mm.
For a plate cam with translating offset follower with knife-edge similar to the following Figure, the offset e=10mm , radius of the base circle 7 = 40mm . The cam rotates counter-clockwise. The follower has the motion as same as the previous problem. Please design the cam profile by graphical method by pencil and keep auxiliary lines. 77T
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Q1:- The circular arc cam rotates uniformly at 600 rpm and operates a flat-footed reciprocating follower. The base circle radius= 24 mm, the nose circle radius= 3 mm, the center distance between the base and nose circles = 30 mm and the distance between the pitch circle center to the center of curvature of the circular flank= 120 mm. The follower retaining spring is to be designed so that at the beginning of the nose, the spring force is 10% greater than the value required to hold the follower on the cam, and in the full lift position, the spring force is 5% greater than the required value. Find the spring stiffness and the spring force at the zero lift position if the total mass o the reciprocating parts is 1.25 kg.
5. Design a Cam with uniform motion of follower based on the following data. 50 mm minimum diameter of CAM, 50 mm lift (rise) with uniform velocity, 0o to 90o Rise, 90o to 180o Top dwell, 180o to 270o Fall, 270o to 360o bottom dwell , clockwise rotation.
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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
Create a cam profile based on the displacement diagram below.These are the details for the cam follower set up: Roller follower with diameter of 10 mm Base circle of 50 mm Clockwise motion
Must answer all 3 . Calculate the values asked.

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