EFFECT FROM THE ACADEMIC YEAR 2013 - 2014

 

ME 352

 

METAL CUTTING & MACHINE TOOL ENGINEERING

 

Instruction                                                                                                                                                                                                                                                                           Periods per week

Duration of University Examination                                                                                                                                                                                                                                  3   Hours

University Examination                                                                                                                                                                                                                                                      75 Marks

Sessional                                                                                                                                                                                                                                                                              25 Marks

 

UNIT-I

 

Cutting Tool Materials: High carbon steel, HSS, Stellite, Carbides, Coated carbides, Diamonds. Tool geometry: Nomenclature of single point cutting tool by ASA & ORS systems. Geometry of drills, cutters and broaches. Chip formation: Types of chips, BUE, Chip breakers. Machining: Orthogonal and oblique cutting, Mechanics of metal cutting, Merchant’s analysis, Shear angle, Solutions of Merchant and Lee & Shafer.

 

UNIT-II

 

Theoretical estimation of forces-in turning, drilling and milling. Thermal aspects of metal cutting: Sources of heat and heat distribution, Various methods of measurement of temperature Cutting fluids and applications. Tool wear, Tool life and Mach inability: Types of wear, mechanism of tool wear, Tool life & Machinability. Taylor’s tool life equation. Economics of machining: Tool life for maximum production, minimum cost

 

UNIT-III

 

Constructional features and specifications of machine tools, various operations on Lathe, Types of Lathes, capstan and turret Lathes, automatic Lathes, Drilling, Milling. Indexing methods. Differences Between shaper planer and slotter. Tool holding and work holding devices. Quick return mechanisms. Automatic feed devices. Grinding machines. Types of grinding, Abrasives and bonds used for grinding wheels.

Specification and selection of wheels.

 

UNIT-IV

 

Broaching, Lapping, Honing, Polishing, Buffing and super finishing, finishing, Horizontal, vertical and Jig Boring machines.

 

Screws and gear manufacturing: Tapping, chasers, Thread rolling, Thread milling, and thread grinding. Gear shaping, Gear hobbling, Gears shaving and grinding.


UNIT-V

 

Jigs and Fixtures: Design principles for location and clamping. Quick clamping devices. Types of jigs and fixtures. Unconventional machining: Principles of working and applications of USM, AJM, EDM, ECM, LBM and EBM. Metal Removal Rates and Energy Calculations.

 

Suggested Reading:

 1.B.L. JuneJa and Shekon, Fundamentals of Metal cutting & Machines Tools, Wiley Eastern Ltd. 198T


 2.P.N.R ao, Manufacturing Technology- Metal Cutting & Machine Tools, Tata McGraw Hill Book Co., 2010.


 3.Amitab Ghosh and Mallick, Manufacturing Science, Affiliated East West Press 1985.


 4.P.C. Pandey & Shan HS, Modern Machining Process,Tata McGraw Hill Education, 1980.


 5.HMT Production Technology.

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