2. Suppose you have to design the rise motion of a double dwell follower motion. The crankshaftrotation range over which the rise event occurs is ẞ. To maintain good vibration characteristics,one of your design requirements is to ensure the continuity of the jerk throughout the wholemotion. Compute the svaj equations that satisfy the fundamental law of cam design along withthe design requirement prescribed above. [20 points]

Answered: Image /qna-images/answer/ede21a41-3da1-432d-970a-c1f616a3e17e.jpg

Answered: 2. Suppose you have to design the rise…

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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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.
Required Q5/ A cam is to be designed for a knife edge follower with the following data : 1. Cam lift = 40 mm during 90° of cam rotation %3D with simple harmonic motion. 2. Dwell for the next 30°. 3. During the next 60° of cam rotation, the follower returns to its original position with simple harmonic motion. 4. Dwell during the remaining 180°. Determine the maximum velocity and acceleration of the follower during its ascent if the cam rotates at 240 r.p.m. Vo=1 m/s & ao= 50.6 m/s2 O Vo=9 m/s & ao= 40.6 m/s2 O Vo=12 m/s & ao= 200.6 m/s2 Vo=5 m/s & ao= 30.6 m/s2 Dogo 7 of 7
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
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Design a cam in non dimensional form consisting of 5 sections, each having the following characteristics: Determine equations for the cam profile for each section and box your answers for clarity. Hint: For each segment write the boundary conditions and apply them to the corresponding equation. Segment 1: (0 < y <) Has a cubic profile: Y = Ay³ + By² + Cy + D Starts from zero Dwells at zero Rises to the height of 4/3 Dwells at the height of 4/3 Segment II: (< y < 1) Dwells at the height of 4/3: Segment III: (1 < y <¹) Has a parabolic profile : Y = Ay² + By + C Starts from the height of 4/3 Dwells at the height of 4/3 Declines to the height of 1 Segment IV: (< <) Has a linear motion: Y = 4y - B Starts from the height of 1 Segment V: (
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
Project 4: Cam-follower is used in a range of applications to convert rotational motion to linear motion of a follower at specific characteristics and time period. Your role is to construct the profile of a cam that specify the following motion requirements of a follower: Motion.1: first part of lift period at constant acceleration of 2 m/s? over rotation of 30° Motion.2: second part of lift period at constant deceleration of 2 m/s? over the next 30° Motion.3: follower produces constant displacement for next 90° Motion 1 and 2 are the rise/lift period and must be 15 mm displacement and the fall is identical to rise/lift period and must return to the base again at 210°. The base of the circle cam is 140 mm. Produce the profile of cam for 2°intervals and find out speed of cam in rpm and the corresponding time interval for each segment of the profile. Provide both a table of data and final sketch including all the information on it. 1. Explore the profiles that will achieve a specified…
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.
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Using the nomogram and the information for the plate cam above (plate cam rotates at 300 rev/min) and drives a reciprocating radial roller follower through a half rise of 80 mm in 170 o of cam rotation. Find the minimum radius of prime-circle if simple harmonic using y’ and y” from problem the homework and the pressure angle is not to exceed 25o . Use the nomogram (NOTE: The nomogram is for Full-Rise Motion Curves!).
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.

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