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Mechanics of Machining

Indian Institute of Technology Guwahati and NPTEL via Swayam

Overview

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 levelINDUSTRY 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.

Syllabus

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 relationshipsWeek 3: Determination of stress, strain, and strain rate Measurement of shear angle Other analysis for force relationshipsWeek 4: Mechanics of oblique cutting Measurement of cutting forcesWeek 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

Taught by

Prof. Uday S. Dixit

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