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Decode Kinematics of Machinery for JNTU-H 18 Course (II - II - Mech. - ME402PC)

SKU: 9789389750867
Anup Goel ISBN 9789389750867 Buy E-book Buy Kindle Edition Buy Printed Book
₹ 195.00

Unit - I Mechanisms : Elements or Links - Classification - Rigid Link, flexible and fluid link - Types of kinematics pairs - sliding, turning, rolling, screw and spherical pairs - lower and higher pairs - closed and open pairs - constrained motion - completely, partially or successfully and incompletely constrained. Mechanism and Machines - Mobility of Mechanisms : Grubler’s criterion, classification of machines - kinematics chain - inversions of mechanism - inversions of quadric cycle chain, single and double slider crank chains, Mechanical Advantage. (Chapter - 1) UNIT - II Kinematics : Velocity and acceleration - Motion of link in machine - Determination of Velocity and acceleration - Graphical method - Application of relative velocity method. Plane motion of body : Instantaneous center of rotation- centrodes and axodes - Three centers in line theorem - Graphical determination of instantaneous center, determination of angular velocity of points and links by instantaneous center method. Kliens construction - Coriolis acceleration - determination of Coriolis component of acceleration. Analysis of Mechanisms : Analysis of slider crank chain for displacement- velocity and acceleration of slider - Acceleration diagram for a given mechanism. (Chapter - 2) UNIT - III Straight-line motion mechanisms : Exact and approximate copied and generated types - Peaucellier - Hart - Scott Russel - Grasshopper - Watt -Tchebicheff’s and Robert Mechanism - Pantographs. Steering gears : Conditions for correct steering - Davis Steering gear, Ackerman’s steering gear. Hooke’s Joint : Single and double Hooke’s joint -velocity ratio - application - problems. (Chapter - 3) UNIT - IV Cams : Definitions of cam and followers - their uses - Types of followers and cams - Terminology - Types of follower motion - Uniform velocity, Simple harmonic motion and uniform acceleration and retardation. Maximum velocity and maximum acceleration during outward and return strokes in the above 3 cases. Analysis of motion of followers : Tangent cam with Roller follower - circular arc cam with straight, concave and convex flanks. (Chapter - 4) UNIT - V Higher pair : Friction wheels and toothed gears - types - law of gearing, condition for constant velocity ratio for transmission of motion - velocity of sliding. Forms of teeth, cycloidal and involutes profiles - phenomena of interferences - Methods of interference. Condition for minimum number of teeth to avoid interference - expressions for arc of contact and path of contact of Pinion and Gear and Pinion and Rack Arrangements - Introduction to Helical - Bevel and worm gearing. Gear Trains : Introduction - Types - Simple - compound and reverted gear trains - Epicyclic gear train. Methods of finding train value or velocity ratio of Epicyclic gear trains. Selection of gear box - Differential gear for an automobile. (Chapter - 5)

Unit - I Mechanisms : Elements or Links - Classification - Rigid Link, flexible and fluid link - Types of kinematics pairs - sliding, turning, rolling, screw and spherical pairs - lower and higher pairs - closed and open pairs - constrained motion - completely, partially or successfully and incompletely constrained. Mechanism and Machines - Mobility of Mechanisms : Grubler’s criterion, classification of machines - kinematics chain - inversions of mechanism - inversions of quadric cycle chain, single and double slider crank chains, Mechanical Advantage. (Chapter - 1) UNIT - II Kinematics : Velocity and acceleration - Motion of link in machine - Determination of Velocity and acceleration - Graphical method - Application of relative velocity method. Plane motion of body : Instantaneous center of rotation- centrodes and axodes - Three centers in line theorem - Graphical determination of instantaneous center, determination of angular velocity of points and links by instantaneous center method. Kliens construction - Coriolis acceleration - determination of Coriolis component of acceleration. Analysis of Mechanisms : Analysis of slider crank chain for displacement- velocity and acceleration of slider - Acceleration diagram for a given mechanism. (Chapter - 2) UNIT - III Straight-line motion mechanisms : Exact and approximate copied and generated types - Peaucellier - Hart - Scott Russel - Grasshopper - Watt -Tchebicheff’s and Robert Mechanism - Pantographs. Steering gears : Conditions for correct steering - Davis Steering gear, Ackerman’s steering gear. Hooke’s Joint : Single and double Hooke’s joint -velocity ratio - application - problems. (Chapter - 3) UNIT - IV Cams : Definitions of cam and followers - their uses - Types of followers and cams - Terminology - Types of follower motion - Uniform velocity, Simple harmonic motion and uniform acceleration and retardation. Maximum velocity and maximum acceleration during outward and return strokes in the above 3 cases. Analysis of motion of followers : Tangent cam with Roller follower - circular arc cam with straight, concave and convex flanks. (Chapter - 4) UNIT - V Higher pair : Friction wheels and toothed gears - types - law of gearing, condition for constant velocity ratio for transmission of motion - velocity of sliding. Forms of teeth, cycloidal and involutes profiles - phenomena of interferences - Methods of interference. Condition for minimum number of teeth to avoid interference - expressions for arc of contact and path of contact of Pinion and Gear and Pinion and Rack Arrangements - Introduction to Helical - Bevel and worm gearing. Gear Trains : Introduction - Types - Simple - compound and reverted gear trains - Epicyclic gear train. Methods of finding train value or velocity ratio of Epicyclic gear trains. Selection of gear box - Differential gear for an automobile. (Chapter - 5)

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