Primary manufacturing processes this provide basic shape and size to the material as per designers requirement. There is no cutting of metal with the help of metallic tool having sharp cutting edge. Introduction conventional machining process metal is removed by means of tool which is harder than work piece and they both are in contact with each other demerits of conventional machining process. Electricaldischarge machining is based on the erosion of metals by spark discharge. A new nontraditional machining method using cavitation. Find materials for this course in the pages linked along the left. So cost consciousness is very much expected in producing a.
Machining a material removal process in which a sharp cutting tool is used to mechanically cut away material so that the desired part geometry remains most common application. Non traditional manufacturing processes an overview introduction nontraditional manufacturing processes is defined as a group of processes that remove excess material by various techniques involving mechanical, thermal, electrical or chemical energy or combinations of these energies but do not use a sharp cutting tools as it needs to be. In this short notes section we will cover the first unconventional machining process electric discharge machining edm. In this category of nontraditional machining electrical energy is used in the form of electrochemical energy or electroheat energy to erode the material or to melt and vapourized it respectively. Material removal processes machining is the broad term used to describe removal of material from a workpiece includes cutting, abrasive processes grinding, advanced machining processes electrical, chemical, thermal, hydrodynamic, lasers automation began when lathes were introduced in 1700s. Nontraditional machining ntm lecture notes, ebook for final year production engineering scroll below to access your.
This fact leads metal removal, a more expensive process when compared to other manufacturing processes. Several types of nontraditional machining processes have been developed to meet extra required machining conditions. Introduction as a result of the advances in machine tools and cutting tool technology in recent decades, many of the conventional machining processes such as turning, milling and drilling have become costeffective, flexible and highthroughput manufacturing processes for producing high precision and high. Lecture notes design and manufacturing ii mechanical. That has all been changed, since the publishing of carl sommer s latest book, the nontraditional machining handbook. When do we need nontraditional processes very high hardness and the strength of the material. As the voltage builds up, eventually the fluid breaks down and sparks. Pdf nontraditional machining ntm processes are now being widely used to generate intricate and accurate shapes in materials, like. Improved surface finish and tool life by tilting the tool to maintain optimum tool to part contact all the times. The common non traditional machining processes are described in. Cutting rates for various materials and thicknesses using a co2 laser ipm material thickness 0. If titanium atomic weight 48, valency 3 is machined by the ecm process at the current of 2000 a with 90% current efficiency, the expected material removal rate in gms will be.
In r and r15,8units of r09 syllabus are combined into 5. Unconventional machining processes introduction and. For example, abrasive water jet operations use mechanical energy, but material is removed by erosion. Pdf selection of nontraditional machining process researchgate. I high mrr i high production rate while processing di cult to machine. Machining is a processes in which a piece of raw material is cut into a desired final shape and size by a controlled materialremoval process. Computer numerical control pdf notes cnc notes pdf. Conventional machining methods always produce some stress in the metal being cut. Milling operation is distinguished from other machining operations on the basis of orientation between the tool axis and the feed direction, however, in other operations like drilling, turning, etc.
Nontraditional manufacturing processes is defined as a group of processes that remove excess material by. Ntm non traditional machining free download as pdf file. Brittle fracture caused by impact of abreasive grains. Lecture notes on college of engineering and technology. Abstract in nontraditional machining, considerable amount of material is removed from the raw material to get the desired profile.
I high surface nish nanolevel ra value i miniaturization of products examples. Very hard fragile materials difficult to clamp for traditional machining. Synthetic sapphire wear resistant impinging pressure compressive stress soft nonmetals, plastics, etc. Medraj mech 4216511 lecture 194 machining tools single point multiple point. Regarding these, nontraditional machining ntm processes have been developed since the world war ii largely in response to new, challenging, and unusual machining and or shape requirements 4. Now everyone can become knowledgeable as to what these processes are capable of, how they work, and the advantages they offer over the more traditional machining technologies. Answer any five full questions, choosing one full question from each module. These methods form a group of processes which removes excess material by various techniques involving mechanical, thermal, electrical chemical energy or combination of these energies. Chips generated in machining are wasted material, at least in the unit operation time consuming a machining operation generally takes more time to shape a given part than alternative shaping processes, such as casting, powder metallurgy, or forming dr. Waterjet machining hydrodynamic machining pressure. He understands that as mold shops turn to hard milling, they are likely to need such a specialty shop to handle the hard milling they cant handle, either because they do not have enough time on their own machines or because. Non traditional machining traditional machining is mostly based on removal of materials using tools that are harder than the materials themselves. The main reasons for choosing nontraditional machining processes are. Non traditional machining authorstream presentation.
Nontraditional machining traditional machining is mostly based on removal of materials using tools that are harder than the materials themselves. May 16, 2020 module 9 non conventional machining notes edurev is made by best teachers of. The tool acts a cathode, and is immersed in a dielectric insulating fluid, and the workpiece acts as an anode. Hence the machining process which utilizes other machining methods are termed as unconventional machining or nontraditional machining or advanced machining processes or modern machining processes. Nontraditional processes ntp nontraditional cutting. During the electrochemical machining ecm of iron atomic weight 56, valency 2 at current of a with 90% current efficiency, the material removal rate was observed to be 0. Machine tool technology complete notes ebook free download pdf. Graduates from this program are prepared to enter the industry as machine operators, production machinists, cadcam technicians, cnc programmers and tool designers. Download link is provided and students can download the anna university me6004 unconventional machining processes ump syllabus question bank lecture notes syllabus part a 2 marks with answers part b 16 marks question bank with answer, all the materials are listed below for the students to make use of it and score good maximum marks with our study materials.
Product requirement i complex shapes i machining in inaccessible areas i low tolerances say, 0. Unconventional machining process sasurie college of engineering. Nontraditional machining processes flashcards quizlet. When these processes are employed properly, they offer many advantages over nontraditional machining processes. Electrochemical machining, electroplating or electro discharge machining are the examples work on this principle.
Non traditional machining processes, also called advanced manufacturing processes, are employed where traditional machining processes are not feasible, satisfactory or economical due to special reasons as outlined below. Unconventional machining process unit 1 introduction prepared by s. In addition to time savings, improved accuracy can also be achieved as positioning errors between setups are eliminated. Jain department of mechanical engineering, indian institute of technology kanpur, kanpur208016, india. Other machining operations shaping and planing a singlepoint tool moves linearly relative to the work part shaping a tool moves planing a workpart moves broaching performed by a multipletooth cutting tool by moving linearly relative to the work in the direction of the tool axis.
In unconventional machining, a form of energy is used to remove unwanted material from a. Non traditional manufacturing processes an overview introduction non traditional manufacturing processes is defined as a group of processes that remove excess material by various techniques involving mechanical, thermal, electrical or chemical. Traditional machining is mostly based on removal of materials. Machining techniques introduction to non traditional machiniing techniques by mr. Computer numerical control notes pdf cnc pdf notes cnc notes pdf file to download are listed below please check it link. Need for non traditional machining, classification, process selection ultrasonic machining. Lecture notes on non traditional machining ntm course code. Nontraditional manufacturing processes or unconventional machining processes. Nontraditional machining techniques for fabricating metal. Unconventional machining processes form an important part of the chapter of machining processes in the subject of manufacturing engineering for gate mechanical engineering. Examples of conventional machining processes are turning, boring, milling, shaping, broaching, slotting, grinding etc. An unconventional machining process or nontraditional machining process is a special type of machining process in which there is no direct contact between the tool and the workpiece.
Reduced cycle time by machining complex components using a single setup. Nontraditional machining ntm lecture notes, ebook for final. Electrochemical machining reverse of electroplating an electrolyte acts as a current carrier and high electrolyte movement in the toolworkpiece gap washes metal ions away from the work piece anode before they have a chance to plate on to the tool cathode. Non traditional manufacturing processes an overview. Modern machining methods are also named as non conventional machining methods. Manufacturing processes can be broadly divided into two groups 1.
Nontraditional machining can be thought of as operations that do not use shear as their primary source of energy. Principle, transducer, magnetrostrictive material, analysis for. Manufacturing processes for engineering materials by s. This document is highly rated by students and has been viewed 367 times. Laser properties speed is given by material, its thicknes and power of the machine. Notes on machine shop mechanical engineering for final year diploma students prepared by. The machine tool technology mach program provides students with entrylevel skills and theoretical knowledge to program and operate all of the latest machine tools utilized in modern manufacturing facilities. Nontraditional machining processes covers recent research and development in techniques and processes which focus on achieving high accuracies and good surface finishes, parts machined without burrs or residual stresses especially with materials that cannot be machined by conventional methods. Chip formation traditional machining in any traditional machining process, chips are formed by a shearing process ref. Conventional machining uses tools, such as lathes, milling machines, boring machines, drill presses, or. These notes are according to the r09 syllabus book of jntu. New and novel materials because of their greatly improved chemical, mechanical and thermal properties are sometimes impossible to machine using traditional machining processes. Introduction to nontraditional machining iit kanpur. The processes are non traditional or nonconventional in the sense that they dont employ a conventional or traditional tool for material removal, instead, they directly utilize some form of energy for metal machining.
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