# ME8492 – Kinematics of Machinery – Regulation 2017 Syllabus

## ME8492 – SYLLABUS

### UNIT I BASICS OF MECHANISMS

Classification of mechanisms — Basic kinematic concepts and definitions — Degree of freedom, Mobility — Kutzbach criterion, Gruebler?s criterion — Grashof?s Law — Kinematic inversions of four-bar chain and slider crank chains — Limit positions — Mechanical advantage — Transmission Angle — Description of some common mechanisms — Quick return mechanisms, Straight line generators, Universal Joint — rocker mechanisms.

### UNIT II KINEMATICS OF LINKAGE MECHANISMS

Displacement, velocity and acceleration analysis of simple mechanisms — Graphical method– Velocity and acceleration polygons — Velocity analysis using instantaneous centres — kinematic analysis of simple mechanisms — Coincident points — Coriolis component of Acceleration — Introduction to linkage synthesis problem.

### UNIT III KINEMATICS OF CAM MECHANISMS

Classification of cams and followers — Terminology and definitions — Displacement diagrams –Uniform velocity, parabolic, simple harmonic and cycloidal motions — Derivatives of follower motions — Layout of plate cam profiles — Specified contour cams — Circular arc and tangent cams — Pressure angle and undercutting — sizing of cams.

### UNIT IV GEARS AND GEAR TRAINS

Law of toothed gearing — Involutes and cycloidal tooth profiles –Spur Gear terminology and
definitions –Gear tooth action — contact ratio — Interference and undercutting. Helical, Bevel, Worm, Rack and Pinion gears [Basics only]. Gear trains — Speed ratio, train value — Parallel axis gear trains — Epicyclic Gear Trains.

### UNIT V FRICTION IN MACHINE ELEMENTS

Surface contacts — Sliding and Rolling friction — Friction drives — Friction in screw threads — Bearings and lubrication — Friction clutches — Belt and rope drives — Friction in brakes- Band and Block brakes.

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