Unit 1 Introduction of Mechanisms and Machines

4 lecture hours

• Concepts ofKinematics and Dynamics
• Mechanisms and Machines
• Planar and Spatial Mechanisms
• Kinematic Pairs
• Kinematic Chains
• Kinematic Diagrams
• Kinematic Inversion
• Four bar chain and Slider Crank Mechanisms and their Inversions
• Degrees of Freedom
• Mobility and range of movement - Kutzbach and Grubler’s criterion
• Number Synthesis
• Grashof’s criterion

Unit 2 Synthesis and Analysis of Mechanisms

3 lecture hours

• Position analysis (Analytical Techniques): Loop closure (Vector Loop) representation of linkages
• Position analysis of Four bar, slider crank and inverted slider crank mechanisms
• Coupler curves
• Toggle and Limit Position
• Transmission angle
• Mechanical Advantage
• Dimensional Synthesis: Definitions of Type
• Number and Dimensional Synthesis
• Definitions ofMotion
• Path and Function generation
• precision position
• Chebychev spacing
• structural error
• Freudenstein’s equation
• two and three position synthesis (function generation only) of four bar and slider crank mechanisms by graphical and analytical methods
• Velocity and Acceleration Analysis: Velocity and Acceleration Diagrams
• Instantaneous Centre of Velocity
• Rubbing Velocity
• Velocity and Acceleration Images
• Corioli’s component of acceleration
• Special Mechanisms: Straight line mechanism
• Indicator diagrams
• 4 6 6 40% Hooke’s Joint
• Steering Mechanisms

Unit 3 Gears and Gear Trains

5 lecture hours

• Law of Gearing
• Characteristics of involute and cycloidal action
• Interference and undercutting
• centre distance variation
• minimum number of teeth
• contact ratio
• spiral bevel and worm gears
• Gear Trains: Synthesis of Simple
• compound & reverted gear trains
• Analysis of epicyclic gear trains. 5

Unit 4 Cams and Followers

• Introduction: Classification of cams and followers
• displacement diagrams of follower motion
• kinematic coefficients of follower motion
• Synthesis and Analysis: Determine of basic dimensions and synthesis of cam profilesusing graphical methods
• cams with specified contours. 3 6 25% References: 1
• Theory of Machines and Mechanisms (3/e 2009
• 2013 Impression) Uicker J J Jr.
• Pennock G R, Shigley J E, Oxford Press. 2
• Kinematics and Dynamics of Machinery (1/e 2009
• 2013 Reprint) Norton R L, McGraw-Hill 3
• Mechanism and Machine Theory (2013 Reprint)
• A G, Prentice Hall 4
• Theory of Machines
• Singh Sadhu
• Pearson Education

Unit 5 Theory of Machines, Rattan S S, Tata McGraw-Hill

• Web Resources http://kmoddl.library.cornell.edu/