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Mechanics of Machining

By Prof. Uday S. Dixit   |   IIT Guwahati
Learners enrolled: 186
Machining is a metal removal process, which can be accomplished by applying force on raw material by means of a cutting tool. This course aims at explaining the physics of the cutting process. The course will contain discussion of statics, kinematics and kinetics of the cutting process. Experimental findings relevant to mechanics of the process will also be discussed. The course will also include introductory discussion on non-traditional machining processes.


INTENDED AUDIENCE : UG and PG students of Mechanical/Production/Manufacturing
PREREQUISITES        : Strength/Mechanics of Material and Materials Science at UG level
INDUSTRY SUPPORT  : Bharat Heavy Electricals Limited (BHEL), Hindustan Aeronautics Limited (HAL), Defense Research and Development Organization (DRDO), Die manufacturing industries, Automobile Industries, Machine Tool Industries, Precision medical equipment manufacturing industries.
Summary
Course Status : Upcoming
Course Type : Elective
Duration : 8 weeks
Start Date : 24 Jan 2022
End Date : 18 Mar 2022
Exam Date : 27 Mar 2022 IST
Category :
  • Mechanical Engineering
  • Manufacturing Processes and Technology
Credit Points : 2
Level : Undergraduate/Postgraduate



Course layout

Week 1  :   Deformation of metals,Mechanism of plastic deformation,Machining processes: Single edge tool,types of chips
Week 2  :  Tool geometry: single point cutting tool specifications
          Tool specifications, conversion of tool angles, Multi-point cutting tools
                  Mechanics of orthogonal cutting, force relationships
Week 3  :   Determination of stress, strain, and strain rate
  Measurement of shear angle
  Other analysis for force relationships
Week 4  :   Mechanics of oblique cutting
  Measurement of cutting forces
Week 5  :  Thermal aspects of machining: Temperatures in orthogonal cutting
  Tool wear and tool life and tool life equations
  Economics in machining  
Week 6  :   Practical machining operations: Turning and shaping & planning operation
  Practical machining operations: milling and drilling
  Grinding of metals and mechanics of grinding process 
Week 7  :   Abrasive machining and finishing operations
  CNC machines and CNC programming  
Week 8  :   Introduction to advanced machining processes

Books and references

1. G K Lal, Introduction to Machining Science, 3rd edition, New Age International Pvt Ltd., 2007. 
2. A Ghosh and A K Mallik, Manufacturing Science, 2nd edition, Affiliated East-West Press Pvt. Ltd., 1986.
3. G Boothroyd and W. A. Knight, Fundamentals of Machining and Machine Tools, CRC-Taylor and Francis, 2006.
4. V K Jain, Advanced Machining Processes, Allied Publishers, 2009.
5. P M Dixit and U S Dixit, Modeling of Metal Forming and Machining Processes: By Finite Element and Soft Computing Methods, Springer, 2010.
6. A Bhattacharya, Metal Cutting: Theory and Practice, New Central Book Agency, 2012.

Instructor bio

Prof. Uday S. Dixit

IIT Guwahati
Dr. Uday Shanker Dixit received B.E. degree in Mechanical Engineering from erstwhile University of Roorkee (now Indian Institute of Technology Roorkee) in 1987, M.Tech. degree in Mechanical Engineering from Indian Institute of Technology Kanpur in 1993, and Ph.D. in Mechanical Engineering from IIT Kanpur in 1998. He has worked in two industries— HMT, Pinjore and INDOMAG Steel Technology, New Delhi, where his main responsibility was designing various machines. Dr. Dixit joined the Department of Mechanical Engineering, Indian Institute of Technology Guwahati, in 1998, where he is currently a Professor. He was also the Officiating Director of Central Institute of Technology, Kokrajhar from February 2014 to May 2015. Dr. Dixit is actively engaged in research in various areas of design and manufacturing since last 30 years. Most of his research work is focused on Modelling of Manufacturing Processes and involves finite element analysis of elastoplastic problems. He has authored/co-authored 136 journal papers, 120 conference papers, 40 book chapters and 7 books in mechanical engineering. He has also co-edited 10 books related to manufacturing. He has guest-edited 11 special issues of journals. Presently he is an Associate Editor of the Journal of Institution of Engineers (India), Series C and Regional Editor Asia of International Journal of Mechatronics and Manufacturing Systems. He has guided 15 doctora and 51 masters’ students. Dr. Dixit has investigated a number of sponsored projects and developed several courses including a NPTEL course on Engineering Mechanics

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 27 March 2022 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.

CRITERIA TO GET A CERTIFICATE

Average assignment score = 25% of average of best 6 assignments out of the total 8 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Guwahati .It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team


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