MC (M-TECH production engineering 1st)

Introduction, system of Tool nomenclature, Tool Geometry, Mechanism of Chip, formation and

forces in orthogonal cutting, Merchant’s force diagram. (3 Hours)

Oblique Cutting: Normal chip reduction coefficient under oblique cutting, true shear angle,

effective rake, influx region consideration for deformation, direction of maximum elongation, effect

of cutting variables on chip reduction co-efficent, forces system in oblique cutting, effect of wear

land on force system, force system in milling, effect of helix angle. (7 hours)

Fundamentals of Dynamometry, Theoretical determination of forces, angle relations, heat and

temperature during metal cutting; distribution, measurement, analysis, theoretical estimation of work

piece temperature, hot machining (7 hours)

Fundamental factors, which effect tool forces: Correlation of standard mechanised test. (Abuladze –

relation), nature of contact and stagnant phenomenon, rates of strains, shear strain and normal strain

distributions, cutting variables on cutting forces. (7 Hours)

Cutting Tools: Tools materials analysis of plastic failure (from stability criterion), Analysis failure by

brittle fracture, wear of cutting tools, criterion, flank and crater wear analysis, optimum tool life, tool

life equations, (Taylor’s woxen etc) Tool life test, machining optimisation, predominant types of

wear; abrasive, adhesive, diffusion wear models, wear measurements and techniques, theory of tool

wear oxidative mathematical modelling for wear, test of machinability and influence of metallurgy

on machinability. Economics of Metal machining (9Hours)

Abrasive Machining: Mechanics of grinding, cutting action of grit, maximum grit chip thickness,

energy and grit force temperature during grinding, wheel wear, grinding, process simulation, testing

of grinding wheels, mechanics of lapping and honing, free body abrasion. (7 Hours)