Illustration of cam, Mechanical Engineering

Assignment Help:

Illustration of CAM

A cam rotating at consisted angular velocity operates an oscillating follower. Draw cam profile for the given data:

Angular displacement of the follower = 20o
Angle of dwell after outstorke = 45o
Angle for outstroke with SHM = 90o
Angle for return stroke along uniform acceleration & retardation for retardation 5/3 of acceleration = 75o
Distance among pivot centre and roller centre = 10.5 cm
Distance of the pivot point from centre of rotation of cam = 14 cm
Roller radius = 1.5 cm
Minimum radius of the cam = 15 cm

Solution:

Draw displacement diagram with appropriate scale . The corresponding lift shall be 10.5 × (20/ 180) × π = 3.665 cm. The diagram is illustrated in figure

For drawing cam profile you might proceed as:

(a) Draw two concentric circles having radii equivalent to minimum cam radius & minimum cam radius as well as roller radius along above chosen scale.

(b) Mark primary position of roller and situate pivot centre A having distance from cam centre & distance from roller centre.

(c) Draw a circle having O as centre and radius equivalent to OA.

(d) Having OA as zero angle line plot angles for outstroke θo, dwell & return stroke θr and divide angles θo & θr in equivalent parts say 8. Mark points on pivot circle i, j, k, etc.

(e) Having i, j, k, etc. as centres and radius equivalent to distance among pivot centre & roller centre, draw arcs that give points on prime circle 1, 2, 3, etc.

(f) Transfer displacement from displacement diagram, above the prime circle with arcs like 1 – 1′, 2 – 2′, 3 – 3′, etc.

(g) Along centres at 1′, 2′, 3′, etc. draw series of arcs having radius equivalent to roller radius to denote follower position.

(h) Draw a smooth curve that is tangential to all of these follower positions. It is the needed cam profile.


Related Discussions:- Illustration of cam

Predict the output of load - curved beam theory, A load cell based on a "pr...

A load cell based on a "proving ring" is shown below.  The circular portion of the load cell has an inner radius of 1.25 in and outer radius of 1.50 in.  The ring has a depth (i.e.

Friction, law of static friction

law of static friction

Pumps, three indications of centrifugal pump cavitating

three indications of centrifugal pump cavitating

Mandatory checks during the first six services , MANDATORY CHECKS DURING TH...

MANDATORY CHECKS DURING THE FIRST SIX SERVICES Various steps in servicing of motorcycle are given below in a tabular form. 2.3.1 First Service and Second Ser

Explain the process for solve screw conveyer problem, Process for solve scr...

Process for solve screw conveyer problem For fully automatic extension of screw conveyer according to screed width we have to go for some design changes, At the end of main

Where a and b are positive constants, Assume the production function is giv...

Assume the production function is given by the following equation (where a and b are positive constants): Q = aL+bK. What is the marginal rate of technical substitution of labor fo

Physics, show that the avogadro constant is the number of atoms in 0.072kg ...

show that the avogadro constant is the number of atoms in 0.072kg of carbon-12

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd