A typical nonconventional process is the machining of abrasive discs using diamond adopted in 1955 or synthetic tools cubic boron carbide 1970. Nontraditional manufacturing processes or unconventional machining processes conventional machining processes mostly remove material in the form of chips by applying forces on the work material with a wedge shaped cutting tool that is harder than the work material under machining condition. Pdf nonconventional machining processes selection using. A new nontraditional machining method using cavitation. Waterjet machining a schematic illustration of waterjet machining. Introduction to nontraditional machining iit kanpur. Conventional and nonconventional processes book pdf by hassan abdelgawad elhofy machining remains a hugely important process in modern engineering and manufacturing practice, and students need to be aware of the vast host of methods and technologies available to meet all sorts of precision and. The main reasons for choosing nontraditional machining processes are. Grinding grinding is the most common form of abrasive machining. The most typical electrolyte is an ionic solution, but molten electrolytes and solid electrolytes are also possible. A new nontraditional machining method using cavitation process. Machining operations are classified into 3 principle processes and they are turning, drilling and milling. Principles of work holding, principles of design of jigs and fixtures metrology and.
Nontraditional machining and thermal cutting processes. A specific machine tool is required for taking care of each machining operation. 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. Electrical discharge machining edm is one of the most widely used nontraditional machining processes. A decision guidance framework for nontraditional machining. Difference between conventional and nonconventional. Co4 identify the principles, processes and applications of ebm. Difference between conventional and nonconventional machining processes are. Total 19 questions have been asked from principles of nontraditional machining processes topic of machining and machine tool operations subject in previous gate papers. There are other operations too that fall in miscellaneous categories such as boring, sawing, shaping, and broaching. An unconventional machining process or non traditional machining process is a special type of machining process in which there is no direct contact between the tool and the workpiece.
Jain advanced machining processes, authored by vijay k. Nontraditional machining ntm processes are now being widely used to generate intricate and accurate shapes in materials, like titanium, stainless steel, high strength temperature resistant hstr alloys, fiberreinforced composites, ceramics, refractories and other difficulttomachine alloys having higher strength, hardness, toughness and other diverse material properties. Function of electrolyte carrying current between tool and work peice remove products of machining and other insoluble products from cutting region dissipate heat produced in. Nontraditional manufacturing processes linkedin slideshare. Non traditional manufacturing processes an overview. 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. Edmm 2540 machining processes course syllabus course description. Thermal energy processes very high local temperatures material is removed by fusion or vaporization physical and metallurgical damage to the new work surface in some cases, resulting finish is so poor that subsequent processing is required thermal energy processes electric discharge machining electric discharge wire cutting electron beam. The technology developed in research laboratories cannot be brought to the shop floor unless its applications are realized by. Nontraditional manufacturing processes is defined as a group of processes.
Many advanced finishing processes have been employed to make circular andor noncircular cavities and holes in difficulttomachine materials. Material removal may occur with chip formation or even no chip formation may take place. Lecture notes on modern manufacturing process dr pramod. Modern or non traditional manufacturing processes modern or 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 used for traditional manufacturing processes. Jul 21, 2012 the most typical electrolyte is an ionic solution, but molten electrolytes and solid electrolytes are also possible. This book provides a convenient, single source of information on advanced machining, material forming, and joining processes. It is nontraditional machining process in which metal is removed by electrochemical dissolution.
Co2 summarize the principle and processes of abrasive jet machining. Lab section has been designed to provide valuable handson experience in machining as well as working in teams. Advanced processes include electrical and chemical means of material removal, as well as the use of abrasive jets, water jets, laser. Pdf selection of nontraditional machining process researchgate. A circular hole of 25 mm diameter and depth of 20 mm is machined by edm process. Electron beam machining ebm introduction, principle, equipment and. It is a material cutting process that engages an abrasive tool whose cutting elements are grains of abrasive material known as grit. When do we need nontraditional processes very high hardness and the strength of the material. Conventional machining uses tools, such as lathes, milling machines, boring machines, drill presses, or. 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. Understand the compare traditional and nontraditional machining process and.
The unconventional manufacturing processes can be classified according to the source of energy used to generate machining action to following groups. Principle, equipment, operation, application, advantages and. The working principles and the applications of some of these processes are discussed in this chapter. Nonconventional tools are more accurate and precise than the conventional tool. Nontraditional processes ntp nontraditional cutting processes. Conventional machining processes and machine tools moduleiv. 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. The machining principles, input variables, and major features for each process will be discussed. It provides information on updated and advanced machine processes that are used today. The process is actually the reverse of electroplating with some modifications. Jain, is a comprehensive book for students pursuing mechanical engineering.
Similar case happens when ice particles are introduced as in ice jet machining. In many cases, the engineering materials cannot be machined by traditional machining processes because of their shape and material type and other effective factors 3. Nontraditional machining processes selection using data envelopment analysis dea article pdf available in expert systems with applications 387. Traditional edged cutting toolbased machining processes are now being continuously replaced by nontraditional machining ntm processes so as to generate complex and intricate shapes on advanced and harder materials, like titanium, stainless steel, highstrength temperatureresistant alloys, fiberreinforced composites, and engineering ceramics. Summarize the principle and processes of abrasive jet machining. 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. Conventional machining process involved tool wearing as there is a physical contact between the tool and the work piece. Unconventional machining processes kg reddy college of. The fundamental principles behind the processes will be discussed with the intent of providing a working knowledge of a broad range of manufacturing processes. Several types of nontraditional machining processes have been developed. Non traditional manufacturing processes or unconventional machining processes conventional machining processes mostly remove material in the form of chips by applying forces on the work material with a wedge shaped cutting tool that is harder than the work material under machining condition. These advanced machining processes amp become still more important when one considers precision and ultraprecision machining. A typical non conventional process is the machining of abrasive discs using diamond adopted in 1955 or synthetic tools cubic boron carbide 1970. Identify the principles, processes and applications of ebm.
Nontraditional machining processes flashcards quizlet. Regarding these, non traditional machining ntm processes have been developed since the world war ii largely in response. Principles of nontraditional machining processes machining. Cannot be used for machining castings or hot rolled steel, since hard outer scale will damage the cutter.
In some applications these processes replaced almost completely the aluminium oxide processes 1893 and the green silicon carbide processes 1891. Download nontraditional manufacturing processes by gary f. Compare nontraditional machining, classification, material applications in material removal process co 2. The tool is act as cathode and work piece as anode. Dec 29, 2015 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. Pdf nontraditional machining ntm processes are now being widely used to. Nontraditional machining ntm lecture notes, ebook for final. Nontraditional machining processes selection using evaluation. Types of machining process single cutting edge point processes multicutting edge point processes random point cutting processes abrasive machining within each category the basic motions kinematics differentiate one process from another.
Electric discharge processes metal removal by a series of discrete electrical discharges sparks causing localized temperatures high enough to melt or vaporize the metal can be used only on electrically conducting work materials two main processes. Understand the principles, processes and applications of thermal metal removal processes. Introduction of both traditional and nontraditional methods of machining of materials. Unconventional machining processes introduction and. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. Introduction to measuring and gauging as it relates to machining practices. 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. It includes detailed information to gain insight into the manufacturing processes. Within the covers of this book, you will find expert coverage of both electrical discharge machining as well as. Article pdf available december 2019 with 407 reads. Nontraditional processes ntp nontraditional cutting. Selection of nontraditional machining processes using. Advanced nontraditional machining processes springerlink.
Co3 understand the principles, processes and applications of thermal metal removal processes. In unconventional machining, a form of energy is used to remove unwanted material from a given workpiece. Function of electrolyte carrying current between tool and work peice remove products of machining and other insoluble products from cutting region dissipate heat produced in the operation. In order to realize the manufacturingmachining demands thrived by newer, hard and difficulttomachine materials being utilized in the present day industries, an assortment of nontraditional machining ntm processes has been developed over the past few decades. Nontraditional 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. Pdf nontraditional manufacturing processes by gary f. 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. Non conventional machining processes selection using multiobjective 1449 journal of engineering science and technology november 2015, vol.
Mechanics of machining, single and multipoint cutting tools, tool geometry and materials, tool life and wear. Traditional machining processes consist of turning, boring, drilling, reaming, threading, milling, shaping, planing, and broaching, as well as abrasive processes such as grinding, ultrasonic machining, lapping, and honing. Co1 understanding nontraditional machining, classification, material applications in material removal process. Electrochemical machining ecm is a metalremoval process based on the principle of. Relationship of machines, jigs and fixtures, and productive tooling to the machining of discrete components. The process principle, advantages and limitations with focus on machining of materials presented in previous part will be especially presented. Learn vocabulary, terms, and more with flashcards, games, and other study tools. I the machining medium is solid grains suspended in an abrasive slurry in the former, while a uid is employed in the jet machining process. Jan 24, 2016 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. Course overview me355 introduction to manufacturing. Nonconventional machining processes selection using multiobjective 1449 journal of engineering science and technology november 2015, vol. Electrochemical machining works on the principles of electrolysis. In unconventional machining, a form of energy is used to remove unwanted material from a.
Pdf nontraditional machining processes selection using. Regarding these, nontraditional machining ntm processes have been developed since the world war ii largely in response. In this process, both tool and work piece is placed into electrolyte solution. Mechanical machining i jet machining and ultrasonic machining usm are typical examples of single action, mechanical non traditional machining processes. Cad or from files produced by stereolithography stl.
Intended as a guide for working with some of the most difficulttomachine materials such as superalloys, ceramics, and composites, advanced machining is a definitive reference for both nontraditional and hybrid machining processes. The introduction of abrasives to the fluid jet enhances the machining efficiency and is known as abrasive water jet machining. Non traditional machining processes linkedin slideshare. It describes available technologies that use tools, such as high velocity material jets, pulsed magnetic fields, light beams, electrochemical reactions, and more.
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