EURIE405:Mechanisms and Machinery
End Exam Con. Eval Category Semester Lectures
Hours per week
Lecture Schedule for the Academic year 2012-‘13 UNIT Topic Sub Topics Lecture hours
UNIT - I
8 Mechanisms Introduction, mechanism and machine, and rigid and resistant bodies, link, kinematic pair, degrees of machines freedom, classification of kinematic pairs, kinematic chain, mechanism and structure, classifications of mechanisms, equivalent mechanisms, four bar mechanism, inversions of four bar mechanism, slider crank chain and double slider crank chain Lower pairs .Introduction, pantograph, straight line mechanism, automobile steering gears, engine indicators, types of steering gear, Hook’s joint, double Hook’s joint. 10
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UNIT - II
Kinematics – Velocity analysis
Introduction, absolute and relative motions, motion of a link, angular velocity of links, velocity of rubbing, slider crank mechanism, crank and slotted lever mechanism, instantaneous center method, number of instantaneous centers, Kennedy’s theorem, angular velocity by instantaneous center method, centroid.
Acceleration of a link, four bar mechanism, angular acceleration of links, acceleration of intermediate and offset points, slider crank mechanism, and Coriolis acceleration component, crank and slotted lever mechanism, Klein’s construction.
Introduction, types of cams, types of followers, motion of the follower,-uniform velocity, SHM, uniform acceleration and retardation, Cycloidal motion, profile of cams, cams with specified contours, Computer aided design.
Introduction, types of governors, Watt governor, Porter governor, Proell governor, Hartnell governor,...