R.G.P.V. BHOPAL
MECHANICAL ENGG 4TH SEM

Mechanisms and Machines:Mechanism, machine, plane and space mechanisms, kinematic pairs,kinematic chains and their classification, degrees of freedom,Grubler’s criterion,kinematic inversions of four bar mechanism and slider crank mechanism, equivalent linkages,pantograph, straight line motion mechanisms, Davis and Ackermann’s steering mechanisms,Hooke’s joint.

UNIT-II

Kinematic analysis of plane mechanisms using graphical and Cartesian vector notations:Planar kinematics of a rigid body, rigid body motion,translation,rotation about a fixed axis, absolute general plane motion. General case of plane motion, relative velocity method, velocity and acceleration analysis, instantaneous center and its application, Kennedy’s theorem, relative motion, Coriolis component of acceleration; velocity and acceleration analysis using complex algebra (Raven’s) method.

UNIT-III

Gears: Classification of gears, nomenclature, involutes and cycloidal tooth profile properties, synthesis of tooth profile for spur gears, tooth system, conjugate action, velocity of sliding, arc of contact, path of contact, contact ratio, interference and undercutting, helical,spiral, bevel and worm gears.

UNIT-IV

Cams: Classification of followers and cams, radial cam nomenclature,analysis of follower motion (uniform, modified uniform, simple harmonic, parabolic, cycloidal), pressure angle, radius of curvature, synthesis of cam profile by graphical approach, cams with specified contours.Gear Trains:Simple, compound, epicyclic gear trains;determination of gear speeds using vector, analytical and tabular method; torque calculations in simple, compound and epicyclic gear trains.

UNIT-V
Gyroscopic Action in Machines:angular velocity and acceleration,gyroscopic torque/ couple;gyroscopic effect on naval ships; stability of two and four wheel vehicles,rigid disc at an angle fixed to a rotating shaft

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