Page 34 - BE Mech Curriculum and Syllabus - R2017 - REC

Department of MECH | REC

Introduction: Classification of mechanisms - Basic kinematic concepts and definitions - Degree of freedom,
Mobility - Kutzbach criterion, Gruebler’s criterion - Grashof’s Law - Kinematic inversions of four-bar chain
and slider crank chains - Limit positions - Mechanical advantage -Transmission Angle. Special mechanisms -
Quick return mechanisms, Straight line generators, Universal Joint - rocker mechanisms - Indicator diagrams
- Hooke’s Joint - Steering Mechanisms - Robotic Mechanisms - linkages - Simple Planar Linkages

UNIT II KINEMATICS OF LINKAGE MECHANISMS 12
Introduction: Displacement, velocity and acceleration analysis of simple mechanisms - Graphical method -
Velocity and acceleration polygons - Velocity analysis using instantaneous centres, Relative velocity method,
rubbing velocity - kinematic analysis of simple mechanisms -Acceleration due to Coincident points - Coriolis
component of Acceleration - Introduction to linkage synthesis problem.

UNIT III KINEMATICS OF CAM AND FOLLOWER 12
Introduction: Classification of cams and followers - nomenclature and definitions - Displacement diagrams of
follower motion - kinematic coefficients of follower - Uniform velocity, parabolic, simple harmonic and
cycloidal motions - Derivatives of follower motions - Layout of plate cam profiles -Specified contour cams -
Circular arc and tangent cams - Pressure angle and undercutting - sizing of cams.

UNIT IV GEARS AND GEAR TRAINS 12
Introduction: Gear Terminology - Law of toothed gearing - Characteristics of Involutes and cycloidal tooth
profiles –Spur Gear terminology and definitions - Gear tooth action - contact ratio - Centre distance variation
- minimum number of teeth - Interference and undercutting. - Helical, Bevel - Worm - Rack and Pinion
gears [Basics only]. Gear trains - Speed ratio, train value -Synthesis of Simple, compound and reverted gear
trains - Analysis of Epicyclic gear trains.

UNIT V FRICTION IN MACHINE ELEMENTS 12
Introduction: Surface contacts - Sliding and Rolling friction - Friction drives - Friction in screw threads -
Bearings and lubrication - Friction clutches - Belt and rope drives - Friction in brakes - Band and Block
brakes.

OUTCOMES:
 Application of mechanism and linkages in the assembly of a system / machine.
 Solving the problems with respect to the displacement, velocity, and acceleration of any link at any
point of a mechanism.
 To develop the design of few linkage mechanisms and cam mechanisms for specified output motions.
 Creating the basic concepts of toothed gearing and kinematics of gear trains
 Justify the effects of friction with respect to the application

TEXT BOOKS:
th
1. Uicker, J.J., Pennock G.R and Shigley, J.E., “Theory of Machines and Mechanisms”, 4
Edition, Oxford University Press, 2014.
2. Rattan, S.S, “Theory of Machines”, 4 Edition, McGraw-Hill, 2014.
th

REFERENCES:
1. Thomas Bevan, "Theory of Machines", 3rd Edition, CBS Publishers and Distributors, 2010.
2. Cleghorn. W. L, “Mechanisms of Machines”, Oxford University Press, 2015
3. Robert L. Norton, "Kinematics and Dynamics of Machinery", Tata McGraw-Hill, 2009.
rd
4. Ghosh. A and Mallick, A.K., “Theory of Mechanisms and Machines", 3 Edition, Affiliated East-
West Pvt.
Ltd., New Delhi, 2006.
5. Rao.J.S. and Dukkipati.R.V. "Mechanisms and Machine Theory", New Age International., New
Delhi, 2006.

Curriculum and Syllabus | B.E. Mechanical Engineering | R2017 Page 34