# Theory of Machines for MSBTE I Scheme (IV - Mech. - 22438)

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Unit - I Fundamentals and type of Mechanisms 1.1 Kinematics of Machines : Introduction to Statics; Kinematics, Kinetics, Dynamics : Kinematic links, joints, pairs, chain and its types, constrained motion and its types, Inversion, Mechanism, Machine and structure. 1.2 Inversions of Kinematic Chains and their materials : Four bar chain - Locomotive coupler, Beam engine and Pantograph. Single slider Crank chain - Pendulum pump, Rotary I.C. engine mechanism, Oscillating cylinder engine, Whitworth quick return mechanism Quick return mechanism of shaper; Double slider chain - Scotch Yoke mechanism, Elliptical trammel, Oldham's Coupling. Unit - II Velocity and Acceleration in Mechanisms 2.1 Concept of relative velocity and relative acceleration of a point on a link, angular acceleration, inter - relation between linear and angular velocity and acceleration. 2.2 Analytical method and Klein's construction to determine velocity and acceleration of different links in single slider crank mechanism. 2.3 Drawing of velocity and acceleration diagrams for simple mechanisms. Determination of velocity and acceleration of point on link by relative velocity method (Excluding Coriollis component of acceleration). Unit - III Cams and Followers 3.1 Introduction to Cams and Followers. Cam and follower terminology, Classification of Cams and Followers. Applications of Cams and Followers. 3.2 Types of follower motions and their displacement diagrams - Uniform velocity, Simple harmonic motion, uniform acceleration and retardation. 3.3 Drawing of profile of a radial cam based on given motion of reciprocating knife - edge and roller follower with and without offset. Unit - IV Belt, Chain and Gear Drives 4.1 Belt Drives - Introduction to Flat belt, V - belt and its applications, materials used for flat and V - belts. Introduction of timing belt and pulley, Angle of lap, length of belt, Slip and creep. Determination of velocity ratio of tight side and slack side tension, centrifugal tension and initial tension, condition for maximum power transmission, Merits, demerits and selection of belts for given applications. 4.2 Chain Drives - Introduction to chain drives, Types of chains and sprockets, Methods of lubrication, Merits, demerits and selection of chains for given applications. 4.3 Gear Drives - Introduction to gear drives, Classification of gears, Law of gearing, gear terminology, Types of gear trains, Train value and velocity ratio for simple, compound, reverted and epicyclic gear trains using spur and helical gears. Merits, demerits and selection of gear drives for given applications. Unit - V Brakes and Clutches 5.1 Introduction to Brakes - Types, Functions and Applications. 5.2 Construction and principle of working of i) Shoe brake, ii) Band brake, iii) Internal expanding shoe brake iv) Disk Brake. 5.3 Braking force, braking torque and power for shoe and band brake. 5.4 Clutches - Uniform pressure and Uniform Wear theories, Introduction to Clutch - Types, Functions and Applications, Construction and principle of working of : a. Single - plate clutch b. Multi - plate clutch c. Centrifugal clutch d. Cone clutch e. Diaphragm clutch. Unit - VI Flywheels, Governors and Balancing 6.1 Flywheel - Introduction to Flywheel - need, function and application of flywheel with the help of turning moment diagram for single cylinder 4 - Stroke I.C. Engine.

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