ME2203-KINEMATICS OF MACHINERY |
UNIT I BASICS OF MECHANISMS |
Definitions – Link, Kinematic pair, Kinematic chain, Mechanism, and Machine. -Degree
of Freedom – Mobility - Kutzbach criterion (Gruebler’s equation) -Grashoff's law-
Kinematic Inversions of four-bar chain and slider crank chain - Mechanical Advantage-
Transmission angle.
Description of common Mechanisms - Offset slider mechanism as quick return
mechanisms, Pantograph, Straight line generators (Peaucellier and Watt mechanisms),
Steering gear for automobile, Hooke’s joint, Toggle mechanism, Ratchets and
escapements - Indexing Mechanisms. |
UNIT II KINEMATIC ANALYSIS |
Analysis of simple mechanisms (Single slider crank mechanism and four bar
mechanism) - Graphical Methods for displacement, velocity and acceleration; Shaping
machine mechanism - Coincident points – Coriolis acceleration - Analytical method of
analysis of slider crank mechanism and four bar mechanism. Approximate analytical
expression for displacement, velocity and acceleration of piston of reciprocating engine
mechanism. |
UNIT III KINEMATICS OF CAMS |
Classifications - Displacement diagrams - Parabolic, Simple harmonic and Cycloidal
motions – Graphical construction of displacement diagrams and layout of plate cam
profiles - circular arc and tangent cams - Pressure angle and undercutting. |
UNIT IV GEARS |
Classification of gears – Gear tooth terminology - Fundamental Law of toothed gearing
and involute gearing – Length of path of contact and contact ratio - Interference and
undercutting - Gear trains – Simple, compound and Epicyclic gear trains - Differentials. |
UNIT V FRICTION |
Dry friction – Friction in screw jack – Pivot and collar friction - Plate clutches - Belt and
rope drives - Block brakes, band brakes. |
REFERENCE |
Text Books |
1. Ambekar A. G., Mechanism and Machine Theory, Prentice Hall of India, New
Delhi, 2007.
2. Uicker J.J.,Pennock G.R., Shigley J.E., “Theory of Machines and
Mechanisms”(Indian Edition), Oxford University Press, 2003. |
Reference Books |
1. Thomas Bevan, “Theory of Machines”, CBS Publishers and Distributors, 1984.
2. Ramamurti,V.,’ Mechanism and Machine Theory”, Second Edition, Narosa
Publishing House, 2005
3. Ghosh A and A.K.Mallick, “Theory of Mechanisms and Machines”, Affiliated East-
West Pvt. Ltd., New Delhi, 1998.
4. Rao J.S and Dukkipati R.V, “Mechanism and Machine Theory”, Wiley-Eastern
Ltd., New Delhi, 199 2.
5. John Hannah and Stephens R.C, “Mechanics of Machines”, Viva Low-Prices
Student Edition, 1999 |
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