ME2203-KINEMATICS OF MACHINERY |
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. |
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. |
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. |
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. |
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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