ME6401 KINEMATICS OF MACHINERY L T P C
3 0 0 3
OBJECTIVES:
- To understand the basic components and layout of linkages in the assembly of a system /
machine.
- To understand the principles in analyzing the assembly with respect to the displacement, velocity, and acceleration at any point in a link of a mechanism.
- To understand the motion resulting from a specified set of linkages, design few linkage mechanisms and cam mechanisms for specified output motions.
- To understand the basic concepts of toothed gearing and kinematics of gear trains and the effects of friction in motion transmission and in machine components.
UNIT I BASICS OF MECHANISMS 9
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 9
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 9
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 9
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 9
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.
TOTAL: 45 PERIODS
OUTCOMES:
- Upon completion of this course, the students can able to apply fundamentals of mechanism for the design of new mechanisms and analyse them for optimum design.
TEXT BOOKS:
- Uicker, J.J., Pennock G.R and Shigley, J.E., “Theory of Machines and Mechanisms”, 3rd
Edition, Oxford University Press, 2009.
- Rattan, S.S, “Theory of Machines”, 3rd Edition, Tata McGraw-Hill, 2009.
REFERENCES:
- Thomas Bevan, "Theory of Machines", 3rd Edition, CBS Publishers and Distributors, 2005.
- Cleghorn. W. L, “Mechanisms of Machines”, Oxford University Press, 2005
- Robert L. Norton, "Kinematics and Dynamics of Machinery", Tata McGraw-Hill, 2009.
- Allen S. Hall Jr., “Kinematics and Linkage Design”, Prentice Hall, 1961
- Ghosh. A and Mallick, A.K., “Theory of Mechanisms and Machines", Affiliated East-West Pvt.
Ltd., New Delhi, 1988.
- Rao.J.S. and Dukkipati.R.V. "Mechanisms and Machine Theory", Wiley-Eastern Ltd., New
Delhi, 1992.
- John Hannah and Stephens R.C., "Mechanics of Machines", Viva Low-Prices Student Edition,
1999.
- Ramamurthi. V, "Mechanics of Machines", Narosa Publishing House, 2002.
- Khurmi, R.S., ”Theory of Machines”,14th Edition, S Chand Publications, 2005
- Sadhu Sigh : Theory of Machines, "Kinematics of Machine", Third Edition, Pearson Education,
2012
Post a Comment Blogger Facebook