Advanced Machining Processes - Video

2y ago
44 Views
2 Downloads
298.12 KB
6 Pages
Last View : 20d ago
Last Download : 2m ago
Upload by : Milo Davies
Transcription

NPTEL SyllabusAdvanced Machining Processes - VideocourseCOURSE OUTLINEThis course on 'Advanced Machining Processes' is also known as"Unconventional Machining Processes", Modern Machining Processes", and"New Technology". It deals with the latest machining processes named as"Advanced Machining Processes". They have been divided into three parts:Part 1 deals with mechanical type advanced machining processes such asUltrasonic machining, water jet machining, abrasive water jet machining.Italso includes micro-/nano-finishing processes viz, abrasive flow finishing,magnetic abrasive finishing, etc.Part 2 deals with thermal machining processes for example, electricdischarge machining, laser beam machining, electron beam machining,etc.Part 3 elaborates chemical and electrochemical machining processes.Itincludes some hybrid machining processes namely, electrochemicalgrinding, electric discharge grinding and similar others.COURSE ngineeringPre-requisites:The candidate/reader should have thebackground of metal cutting and basicsof physics and chemistry.Additional Reading:TopicsHoursRelated research papers.ASM Handbooks.1.INTRODUCTION1Why do we need advanced machining processes(AMPs)?Prof. Vijay K. JainDepartment of MechanicalEngineeringIIT KanpurAdvanced machining processesRemarks2.MECHANICAL ADVANCED MACHININGPROCESSES2ABRASIVE JET MACHINING ( AJM ) Introduction - Abrasive Jet Machining Setup - GasPropulsion System - Abrasive Feeder Machining Chamber - AJM Nozzle - Abrasives.PARAMETRIC ANALYSIS - Stand-off-Distance Abrasive Flow Rate - Nozzle Pressure - MixingRatio.PROCESS CAPABILITIESAPPLICATIONSPROBLEMS3.ULTRASONIC MACHINING ( USM )INTRODUCTIONULTRASONIC MACHINING SYSTEMCoordinators:2

ULTRASONIC MACHINING SYSTEMMECHANICS OF CUTTINGPARAMETRIC ANALYSISPROCESS CAPABILITIESAPPLICATIONSPROBLEMS4.ABRASIVE FLOW FINISHING2ABRASIVE FLOW FINISHINGWORKING PRINCIPLEABRASIVE FLOW MACHINING SYSTEM Machine - Tooling - Media.PROCESS VARIABLESPROCESS PERFORMANCEANALYSIS AND MODELING OF ABRASIVEFLOW MACHINED SURFACES - Number ofActive Grains - Wear of Abrasive Grains.APPLICATIONS - Aerospace - Dies and Molds.REVIEW QUESTIONS5.MAGNETIC ABRASIVE FINISHING (MAF)2INTRODUCTIONWORKING PRINCIPLE OF MAFMATERIAL REMOVAL (OR STOCK REMOVAL)AND SURFACE FINISH - Bonded andUnbonded Magnetic Abrasives - Machining Fluid- Magnetic Flux Density.ANALYSISREVIEW QUESTIONS6.WATER JET CUTTING ( WJC )1INTRODUCTIONWJM MACHINEPROCESS CHARACTERISTICSPROCESS PERFORMANCEAPPLICATIONSBIBLIOGRAPHYSELF TEST QUESTIONSREVIEW QUESTIONS7.ABRASIVE WATER JET MACHINING ( AWJM )WORKING PRINCIPLEAWJM MACHINE - Pumping System - Abrasive2

Feed System - Abrasive Jet Nozzle - Catcher.PROCESS CHARACTERISTICSWATER - Water Jet Pressure During Slotting Water Flow Rate.ABRASIVES - Abrasive Flow Rate - AbrasiveParticle Size - Abrasive Material.CUTTING PARAMETERS - Traverse Speed Number of Passes - Stand-off-Distance - VisualExamination.PROCESS CAPABILITIESAPPLICATIONSREVIEW QUESTIONS8.THERMOELECTRIC ADVANCED MACHININGPROCESSESELECTRIC DISCHARGE MACHINING ( EDM )3INTRODUCTIONWORKING PRINCIPLE OF EDMR-C PULSE GENERATOREDM MACHINE - Power Supply - DielectricSystem - Electrodes - Servo system - ElectrodeRefeeding - Power Delivered to the DischargingCircuit.CNC-EDMANALYSIS - Analysis of R-C Circuits - Current indischarging Circuit - Material Removal in RCCircuits - Surface Finish.PROCESS VARIABLES - Dielectric Pollutionand its Effects.PROCESS CHARACTERISTICS - GapCleaning.APPLICATIONS9.ELECTRIC DISCHARGE GRINDING ( EDG ) ANDELECTRIC DISCHARGE DIAMOND GRINDING(EDDG)1.5ELECTRIC DISCHARGE GRINDINGELECTRICAL DISCHARGE DIAMONDGRINDING - Working Principle - Capabilities andApplications.10.WIRE ELECTRIC DISCHARGE MACHININGWORKING PRINCIPLEWIRE EDM MACHINE - Power Supply System Dielectric System - Positioning System - WireDrive System.ADVANCES IN WIRECUTSTRATIFIED WIRE1.5

STRATIFIED WIREPROCESS VARIABLESPROCESS CHARACTERISTICSAPPLICATIONSPROBLEMSREVIEW QUESTIONS11.LASER BEAM MACHINING3PRODUCTION OF LASERSWORKING PRINCIPLE OF LASER BEAMMACHININGTYPES OF LASERS - Solid Lasers - Gas Lasers.PROCESS CHARACTERISTICSAPPLICATIONS - Drilling - Cutting - Marking Miscellaneous Applications.REVIEW QUESTIONS12.PLASMA ARC MACHINING1WORKING PRINCIPLEPLASMA ARC CUTTING SYSTEMELEMENTS OF A PLASMA ARC CUTTINGSYSTEMPROCESS PERFORMANCEAPPLICATIONSREVIEW QUESTIONS13.ELECTRON BEAM MACHINING2WORKING PRINCIPLEELECTRON BEAM MACHINING SYSTEM Electron Beam Gun - Power Supply - VacuumSystem and Machining Chamber.PROCESS PARAMETERSCHARACTERISTICS OF THE PROCESSAPPLICATIONSPROBLEMS14.FOCUSSED ION BEAM MACHINING2Working Principle - FIB machining system - Parametricanalysis - Applications - Problems.15.ELECTROCHEMICAL AND CHEMICALADVANCED MACHINING PROCESSESELECTROCHEMICAL MACHINING4

INTRODUCTIONELECTROLYSISELECTROCHEMICAL MACHINING (ECM)ECM MACHINE TOOL - Power Source Electrolyte Supply and Cleaning System - Tooland Tool Feed System - Workpiece and WorkHolding Device.ADVANTAGES AND LIMITATIONSAPPLICATIONSMECHANICAL PROPERTIES OF ECM'DPARTSTHEORY OF ECM - Faraday's Laws ofElectrolysis.ELECTROCHEMICAL EQUIVALENT OFALLOYS - Material Removal Rate in ECM - Interelectrode Gap in ECM - Zero Feed Rate - FiniteFeed Rate - Self Regulating Feature Generalized Equation for Inter-electrode Gap.MAXIMUM PERMISSIBLE FEED RATE IN ECMELECTROLYTE CONDUCTIVITY (K) Temperature - Hydrogen Bubbles.PROBLEMS16.ELECTROCHEMICAL GRINDING1INTRODUCTIONECG MACHINE TOOLPROCESS CHARACTERISTICSAPPLICATIONSREVIEW PROBLEMS17.ELECTROSTREAM DRILLING1INTRODUCTIONPROCESS PERFORMANCEBIBLIOGRAPHYREVIEW QUESTIONS18.ELECTROCHEMICAL DEBURRINGINTRODUCTION - Definition of Burr - Types ofBurrs - Basic Approach on Deburring.CLASSIFICATION OF DEBURRINGPROCESSESELECTROCHEMICAL DEBURRING (ECD e) Principle of Working.APPLICATIONSSPECIFIC FEATURES OF ECD e MACHINE1.5

REVIEW QUESTIONS19.SHAPED TUBE ELECTROLYTIC MACHINING1INTRODUCTION - Working Principle - Applications.20.CHEMICAL MACHINING ( ChM )2INTRODUCTIONMASKANTS - Cut And Peel - Screen Printing Photo-resist Mask-ant.ETCHANTADVANTAGES AND LIMITATIONSREVIEW QUESTIONS21.ANODE SHAPE PREDICTION AND TOOL DESIGNFOR ECM PROCESSES3INTRODUCTIONANODE SHAPE PREDICTION - Cosθ Method Empirical Approach - Nomographic Approach Numerical Approach - Numerical Methods.TOOL (CATHODE) DESIGN FOR ECM PROCESSCosθ MethodCorrection Factor MethodSOME EXERCISES1.5References:1. Advanced Machining Processes by V.K.Jain, Allied Publishers, NewDelhi.2. Modern Machining Processes by P.C.Pandey, Tata McGraw Hill, NewDelhi.3. Unconventional Machining Processes by P.K.Mishra4. Advanced Machining Methods by JAMcGeough, Chapman and Halls, UK.A joint venture by IISc and IITs, funded by MHRD, Govt of Indiahttp://nptel.iitm.ac.in

Advanced Machining Processes - Video course COURSE OUTLINE . Numerical Approach - Numerical Methods. TOOL (CATHODE) DESIGN FOR ECM PROCESS Cosθ Method Correction Factor Method SOME EXERCISES 3 1.5 References: 1. Advanced Machining Processes by V.K.Jain, Allied Publishers, New Delhi. 2. Modern Machining Processes by P.C.Pandey, Tata McGraw .

Related Documents:

a result, a new class of machining processes has evolved over a period of time to meet such demands, named non-traditional, unconventional, modern or advanced machining processes [1–3]. These advanced machining processes (AMP) become still more important when one considers precision and ultra-precision machining.

There are different types of machining process used for sapphire material. The fig. 1 shows a graphical representation of sapphire machining processes i.e. laser machining process, grinding process, polishing process, lapping process, new developed machining process, compound machining process and electro discharge machining process. Fig.1.

Advanced machining processes (AMPs) are widely utilized in industries for machining complex geome-tries and intricate profiles. In this paper, two significant processes such as electric discharge machining (EDM) and abrasive water jet machining (AWJM) are considered to get the optimum values of responses for the given range of process parameters.

Machining metals follows a predictable pattern with minimal creep. When machining plastics, quick adjustments must be made to accommodate substantial creep — not to mention that the material has a strong propensity for chipping and melting during machining. Simply stated, the basic principles of machining metals do not apply when machining

PCI Machining - Absolute Machine Tools 7944 Innovation Way Mason OHIO 44053 USA 1 (513) 701-5550 sales-usa@pci-machining.com PCI Machining Rue Copernic 42030 - Saint-Étienne FRANCE 33 4 77 42 60 88 sales@pci-machining.com services@pci-machining.com PCI Machining Vertriebsbüro Deutschland Lebacher Straße 4

Machining metals follows a predictable pattern with minimal creep. When machining plastics, quick adjustments must be made to accommodate substantial creep — not to mention that the material has a strong propensity for chipping and melting during machining. Simply stated, the basic principles of machining metals do not apply when machining

where the use of 5-axis simultaneous machining brings unequalled surface quality. Moreover, it is targeted at prototype machining, 5-axis trimming and special machining where full 5-axis machining is the requirement for quick and accurate manufacturing. Multi-Axis Surface Machining is also an add-on product to Prismatic Machining and Lathe .

C. FINANCIAL ACCOUNTING STANDARDS BOARD In 1973, an independent full-time organization called the Financial Accounting Standards Board (FASB) was established, and it has determined GAAP since then. 1. Statements of Financial Accounting Standards (SFAS) These statements establish GAAP and define the specific methods and procedures for