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

Draw bending moment diagram for the beam, Draw bending moment diagram for t...

Draw bending moment diagram for the beam: A cantilever beam carries a uniformly distributed load of 2 t/m over the total length of 6 m and point loads of 5 t, 3 t, 7 t & 2 t a

Feathering system, what is feathering system in turbo prop type aircraft

what is feathering system in turbo prop type aircraft

Classification based on mode of welding, Classification Based on Mode of We...

Classification Based on Mode of Welding Manual welding: In this welding the entire welding operation is performed and controlled by hand. Here, there are two movements involv

Find out the product of inertia of a rectangular area, Find out the product...

Find out the product of inertia of a rectangular area: Find out the product of inertia of a rectangular area b × d with respect to its sides as illustrated in Figure Solut

Expression for condition of maximum discharge, Drive an mathmatical express...

Drive an mathmatical expression for condition of maximum discharge through the chimney. Dry saturated steam is supplied from a boiler to a steam engine at a pressure of 15 bar.

General tools of tool and equipment , GENERAL TOOLS: General tools include...

GENERAL TOOLS: General tools include spanners, screw drivers, files, pliers, vices, punches, mallets, chisels, grinders, drilling machine, oil and grease guns, etc.

Velocity acceleration, velocity acceleration by relative method and intenta...

velocity acceleration by relative method and intentan methodto be showed graphical on it?

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