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Course Detail

Course Name Kinematics of Machines
Course Code 19MEE214
Program B. Tech. in Mechanical Engineering
Semester Four
Year Taught 2019

Syllabus

Unit 1

Review of kinematics of planar rigid bodies

Definitions- link, kinematic pair, kinematic chain, mechanism and machines. Degrees of freedom – mobility – Kutzbach criterion – Grashoff’s law. Kinematic inversions – four bar chain and slider crank – mechanical advantage – transmission angle.

Mechanisms – quick return mechanism- pantograph -straight line mechanisms -steering gear for automobiles- Hookes joint – Toggle Analysis of slider crank and four bar mechanisms – Graphical method for position,velocity and acceleration. Instantaneous center – velocity analysis – Kennedy’s theorem.

Shaping machine mechanism – coincident points – Corioli’s component of acceleration – graphical approach for quick return mechanism. Analysis of complex mechanisms

Unit 2

Loop closure method for slider crank, four bar and quick return mechanism –computer programs for analysis of mechanisms – numerical solution of loop closure equations.

Synthesis of mechanisms – dimensional and three position synthesis

Unit 3

Cams – classification of cams and followers, nomenclature, description and analysis of follower motion, pressure angle – Determine of basic dimensions and synthesis of cam profiles, graphical and analytical methods, cams with specified contours.

Gears – terminology, fundamental law of gearing, involute profile. Interference and undercutting, minimum number of teeth, contact ratio, bevel helical, spiral and worm gears. Gear Trains – simple, compound and epicyclic gear trains.

Lab session (ADAMS software/ MAKEIT Tool Kit)
  • Modelling and analysis of slider crank mechanism and its inversions
  • Modelling and analysis of four bar mechanism and its inversions
  • Modelling and analysis of 6 bar chains
  • Modelling and analysis of crank and slotted lever and Whitworth quick return mechanism
  • Modelling and analysis of Cam mechanism
  • Modelling and analysis of gear drives
  • Modelling and analysis of practical mechanisms (mini project)
  • Demonstration of mechanism using the Tool kit

Objectives and Outcomes

Course Objectives

This course is expected to enable the students to

  • Familiarize with fundamental definitions and classification of mechanisms
  • Perform kinematic synthesis and analysis of planar mechanisms with lower and higher pairs
  • Perform kinematic analysis using software package

Course Outcomes

  • CO1: Classify and solve for mobility of planar mechanisms
  • CO2: Perform kinematic synthesis and analysis of planar mechanisms
  • CO3: Construct and analyze cam profiles for a specified motion of the follower
  • CO4: Analyze different types of gear trains
  • CO5: Model and analyze planar mechanisms using software package

CO – PO Mapping

PO/PSO/
CO
PO1 PO2 PO3 PO4 PO5 PO6 PO7 PO8 PO9 PO10 PO11 PO12 PSO1 PSO2 PSO3
CO1 3 3 2 1 1 2
CO2 3 3 2 1 1 1 3 2
CO3 3 3 2 1 1 1 3 2
CO4 3 3 2 1 1 3 2
CO5 3 3 2 1 3 2 2 2

Textbook / References

Textbook(s)

  • Uicker, John Joseph, Gordon R. Pennock, and Joseph Edward Shigley.Theory of machines and mechanisms.Vol. 1. New York, NY: Oxford University Press, 2011.
  • Norton, Robert L. Kinematics and dynamics of machinery.McGraw-Hill Higher Education, 2011.

Reference(s)

  • Ghosh, Amitabha, and Asok K. Mallik.Theory of mechanisms and machines. AffiliatedEast-West Press Private Limited, 2002.
  • Rattan, Sarjit S. Theory of machines.Tata McGraw-Hill Education, 2014.

Evaluation Pattern

Assessment Internal External
Periodical 1 10
Periodical 2 10
*Continuous Assessment (Theory)(CAT) 15
*Continuous Assessment (Lab)(CAL) 30
End Semester 35
*CA – Can be Quizzes, Assignment, Projects, and Reports.

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