MR4102 Concepts of Machines and Mechanisms Syllabus:
MR4102 Concepts of Machines and Mechanisms Syllabus – Anna University PG Syllabus Regulation 2021
COURSE OBJECTIVES
1. To understand the functionality of basic mechanisms and to determine the position, velocity, and acceleration profiles of these mechanisms.
2. To recognize the effect of friction in joints and to know the various types of mechanical power transmission using belt drives.
3. To identify the nomenclature of gear and to understand the functions and typical uses of various types of gears and Cams.
4. To understand the behaviours of the vibration in various machines. To make use of various conventional machine tools for component development.
UNIT I MECHANISMS
Definition – Machine and Structure – Kinematic link, pair and chain – classification of Kinematic pairs – Constraint& motion – Degrees of freedom – Slider crank – Single and double – Crank rocker mechanisms – Inversions – applications. Kinematic analysis and synthesis of simple mechanisms – Determination of velocity and acceleration of simple mechanisms.
UNIT II FRICTION
Types of friction – friction in screw and nuts – pivot and collar – thrust bearings – collar bearing – plate and disc clutches – belt (flat &vee) and rope drives – creep in belts – Jockey pulley – open and crossed belt drives – Ratio of tensions – Effect of centrifugal and initial tension – condition for maximum power transmission.
UNIT III GEARING AND CAMS
Gear profile and geometry-nomenclature of spur and helical gears – law of gearing – interference requirement of minimum number of teeth in gears-gear trains-simple and compound gear trains determination of speed and torque in epicyclic gear trains-Cam profile different types of followers.
UNIT IV VIBRATION
Free, forced and damped vibrations of single degree of freedom systems – force transmitted to supports – vibration Isolation – vibration absorption – torsional vibration of shafts – single and multirotor systems – geared shafts – critical speed of shafts.
UNIT V MACHINE TOOLS
Machine tool construction-features – operations of lathe, milling machine, drilling machine – Drive system for machine tools – mechanical, hydraulic and electric stepped and variable speeds – spindle speeds and feed drives-linear and reciprocation motion generation.
TOTAL : 30 PERIODS
COURSE OUTCOMES:
Upon completion of this course, the students will be able to:
CO1: Apply the fundamental mechanism in machinery development.
CO2: Consider the functions of friction in joints and select of appropriate belt drives for the typical applications.
CO3: Select and use of appropriate gears and cams for system development.
CO4: Evaluate the possibility of vibration generation in the system design.
CO5: Demonstrate the various conventional machine tools and CNC Machines.
REFERENCES
1. Bansal R.K, “Theory of Machines”, Laxmi Publications (P) ltd., New Delhi. 2016.
2. G.C.Sen and A. Bhattacharya, “Principles of Machine Tools”, New Central book Agency, 2009.
3. Joseph Edward Shigley, Charles R.Mischke, “Mechanical Engineering Design”, Mcgraw Hill International Edition, 2008.
4. Malhotra .D.R. and Gupta .H.C. “The Theory of Machines” SatyaPrakasam, Tech. India Publications, 1989.
5. R.S.Khurmi and Gupta, “Theory of Machines” Eurasia Publishing House Pvt Ltd. 2020.
LABORATORY
LIST OF EXPERIMENTS
1. 2D modeling and 3D modeling of Bearing, and Couplings.
2. 2D modeling and 3D modeling of Gears and Ball screw.
3. 2D modeling and 3D modeling of Sheet metal components
4. 2D modeling and 3D modeling of Jigs, fixtures and Die.
5. 2D modeling and 3D modeling of Structures and frames
6. Modeling and simulation of mechanism of 4 Bar chain
7. Modeling and simulation of mechanism of Slider crank,
8. Modeling and simulation of mechanism of Ball and screw and Rack and pinion.
9. Modeling and simulation of mechanism of Belt and chain drives.
10. Modeling and simulation of mechanism of Quick return and elliptical trammel.
TOTAL: 30 PERIODS
LIST OF SOFTWARES
Solid Works/ Open CAD /CREO /CATIA/ NX CAD/MSC-Adams – 15 No’s