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. 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. These machining processes are non traditional in the sense that no cutting tools are utilized, instead energy in its crude form mechanical, thermoelectric, electrochemical or chemical is used to remove material from the workpiece. Materials are removed by traversing in a direction parallel to the axis of. Moreover, the attainable surface finish with the traditional machining processes is observed to be very poor. Non conventional tools are more accurate and precise than the conventional tool.
Selection of nontraditional machining process ijert. Introduction of both traditional and non traditional methods of machining of materials. Design of an analytic hierarchyprocessbased expert system for nontraditional machining process selection. 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. Non traditional manufacturing processes an overview.
Three projects generally involve programing based on the lecture content and report 20%. The main attraction of edm over traditional machining processes such as metal cutting using different tools and grinding is that this technique utilises thermoelectric process to erode undesired materials from the work piece by a series of discrete electrical sparks between the work piece and the electrode. Mechanical machining i jet machining and ultrasonic machining usm are typical examples of single action, mechanical non traditional machining processes. The goal of the paper is to present the role of ump in modern manufacturing chain. Materials are removed by traversing in a direction parallel to the axis of rotation of axis or along a specified path to form a complex rotational shape. Non traditional machining processes login to download. Conventional machining methods always produce some stress in the metal being cut.
The main reasons for choosing nontraditional machining processes are. Ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes. Compare non traditional machining, classification, material applications in material removal process co 2. Ashish umarkar advanced manufacturing processes amp12154 unit no. Conventional machining uses tools, such as lathes, milling machines, boring machines, drill presses, or. Very hard fragile materials difficult to clamp for. Nontraditional and hybrid machining processes book pdf by hassan abdelgawad elhofy todays stringent design requirements and difficulttomachine materials such as tough super alloys, ceramics, and composites, have made traditional machining processes costly and obsolete. Similar case happens when ice particles are introduced as in ice jet machining. Nontraditional machining processes research advances joao. Numerical modeling and simulation of unconventional machining processes. 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 surface finish requirements. Pdf analysis of electrochemical machining tool by using. Many material removal processes have been developed since world war ii to address problems that cant be handled with conventional, that is, traditional chipforming machining processes.
Analytical modeling of mechanical, thermal and electrochemical type non traditional machining processes. Pdf the generic term nontraditional machining ntm refers to a variety of thermal, chemical, electrical. A typical non conventional process is the machining of abrasive discs using diamond adopted in 1955 or synthetic tools cubic boron carbide 1970. Lecture notes and reading materials will be provided. Qfdbased expert system for nontraditional machining. Non traditional machining processes linkedin slideshare. Conventional machining processes and machine tools pdf plz post vijay. Machining is any of various processes in which a piece of raw material is cut into a desired final shape and size by a controlled materialremoval process. Nonconventional machining nonconventional 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. 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. A new nontraditional machining method using cavitation. Rajurkar has more than 120 refereed publications and nearly 120 technically edited papers which. Non traditional 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.
The introduction of abrasives to the fluid jet enhances the machining efficiency and is known as abrasive water jet machining. High speed machining and assembly high speed machined aluminum parts are replacing builtup parts made by forming and assembly riveting in the aerospace industry. Nontraditional processes ntp nontraditional cutting. Nontraditional machining introduction machining processes that involve chip formation have a number of inherent limitations which limit their application in industry. Electrochemical machining works on the principles of electrolysis. Nonconventional machining processes universitas brawijaya.
Nontraditional machining the definitive guide machinemfg. Difference between conventional and nonconventional. Pdf nontraditional machining ntm processes are now being widely used to. Electrical discharge machining edm is one of the most widely used nontraditional machining processes. Nontraditional machining, utilizing electrical, chemical, and optical sources of energy. 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. Pdf nontraditional machining processes selection using data.
A casebased reasoning approach for nontraditional machining processes selection. Non conventional machining non conventional 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. 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. Pdf nontraditional manufacturing processes by gary f. Many advanced finishing processes have been employed to make circular andor noncircular cavities and holes in difficulttomachine materials. Large amounts of energy are expended to produce unwanted chips which must be removed and discarded. Nontraditional machining and thermal cutting processes. Introduction to measuring and gauging as it relates to machining practices.
This book is an attempt to present to the practicing engineers, managers, and research scholars in engineering industry and institutions the latest trends in machining and a glimpse of the future of machining. Some of the processes employed for hole making are electrodischarge machining, laser beam machining, electron beam machining, shaped tube electrochemical machining and electrochemical spark machining. 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. Pdf nonconventional machining processes selection using. 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.
To achieve these targets, a brief knowledge of various machining processes is required. Nontraditional machining processes selection using data envelopment analysis dea article pdf available in expert systems with applications 387. Nontraditional machining processes like usm, ecm,edm,ebm are an advanced methods used to overcome the problems of traditional machining methods. Advanced nontraditional machining processes springerlink. The part below was machined on a 5axis makino a77 at boeing using a 815k rpm spindle speed, and a feed of 240 ipm vs 60 ipm conventional machining. Nontraditional machining processes selection using.
Cad or from files produced by stereolithography stl. Ahmed abdelaleem amin site reflects the activities work experience in mechanical and industrial engineering, the site help students in their study by offering the data that help them in their study. Understand the principles, processes and applications of thermal metal removal processes. Material removal processes once again can be divided into two groups. Non traditional manufacturing processes chemical machining cm electrochemical machining ecm electrodischarge machining edm laser cutting ultrasonic. 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. Very hard fragile materials difficult to clamp for traditional machining when the work piece is too flexible or slender. 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. Nonconventional tools are more accurate and precise than the conventional tool.
In view of these limitations, many nontraditional machining ntm. Non traditional 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 difficultto machine alloys having higher strength, hardness. Pdf selection of nontraditional machining process researchgate. The reason for that is, there was never a single source publication that contained all that information in a logical, easytounderstand format. Why nontraditional processes are important need to machine newly developed metals and nonmetals with special properties that make them difficult or impossible to machine by conventional methods need for unusual andor complex part geometries that cannot easily be accomplished by conventional machining need to avoid surface damage that. Jain advanced machining processes allied publishers pvt. Computer aided process planning of non traditional machining processes.
Conventional machining process involved tool wearing as there is a physical contact between the tool and the work piece. Material removal may occur with chip formation or even no chip formation may take place. The processes described in this chapter are often called nontraditional machining ntm processes, and have the following advantages. Nontraditional manufacturing processes linkedin slideshare. Unconventional machining processes introduction and. Sheet metal prototyping processessecondary operation. These advanced machining processes amp become still more important when one considers precision and ultraprecision machining.
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. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Nontraditional machining employs processes that remove material by various methods involving thermal, electrical, chemical and mechanical energy or even. 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. 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. Nontraditional machining processes flashcards quizlet. Difference between conventional and nonconventional machining processes are. 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. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. Download nontraditional manufacturing processes by gary f. 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. Nontraditional machining, also known as nonconventional machining or modern machining method, generally refers to the machining method of removing or adding materials with energy of electricity, heat energy, light energy, electrochemical energy, chemical energy, sound energy and special mechanical energy, so as to realize materials being removed, deformed, changing properties or being plated. Processes, systems sensing and control of traditional and nontraditional macro, micro and nano manufacturing processes, such as electric discharge, electrochemical machining and ultrasonic machining and their hybrid processes.
Pdf files of electrochemical grinding regaleximcoin electrochemical grinding machine process pdf, download pdf electrochemical grinding machine process pdf. When do we need nontraditional processes very high hardness and the strength of the material. Paper submission additional symposium activities organizers. Date neelam kumar verma roll no 211me2355 iii electrochemical machining is a nonconventional machining, 25 electrochemical grinding process 24 26. 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. Difference between conventional and non conventional machining processes are.
Nontraditional machining processes covers recent research and. The alternative is such case is application of unconventional manufacturing technologies ump. Electrolytic reaction at workpiece surface mechanical. Final revised manuscripts must be submitted by march 08, 2017. Summarize the principle and processes of abrasive jet machining. As a result, manufacturers and machine design engineers are turning to advance. When i started at hm, the transfer machines were the most advanced.
Nontraditional machining traditional machining is mostly based on removal of materials using tools that are harder than the materials themselves. Conventional machining processes and machine tools moduleiv turning turning operation is a machining process and is used to produce round parts in shape by a single point cutting tool. 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. This book presents the basics of non traditional machining processes in a. 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. Non traditional manufacturing processes chemical machining cm electrochemical machining ecm electro discharge machining ppt. Waterjet machining a schematic illustration of waterjet machining. Nontraditional machining can be thought of as operations that do not use shear as their primary source of energy. For example, abrasive water jet operations use mechanical energy, but material is removed by erosion.
Nontraditional and hybrid machining processes book pdf by hassan abdelgawad elhofy todays stringent design requirements and difficulttomachine materials such as tough super alloys, ceramics, and composites, have made traditional machining processes costly and. With our wide array of tools and technologies, and the innovation and creativity of our engineers and operators, unconventional auxiliary processes are performed to produce the most challenging design features other suppliers may tell you that a design feature can only be produced with a significant investment in tooling and a long lead time. Jain, advanced machining processes, allied publishers,2009. Modern machining processes tata mcgrawhill, new delhi, 2007. Pdf nontraditional machining processes selection using. In some applications these processes replaced almost completely the aluminium oxide processes 1893 and the green silicon carbide processes 1891. 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. Nontraditional machining processes selection using evaluation. Electrochemical machining ecm is a non traditional machining process used mainly to cut hard or difficult to cut metals, where the application of a more traditional process is not convenient.
Non traditional machining processes subject college notes. In unconventional machining, a form of energy is used to remove unwanted material from a. 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. Introduction to nontraditional machining iit kanpur. The processes that have this common theme, controlled material removal, are today collectively known as subtractive manufacturing, in distinction from processes of controlled material addition, which are known as additive manufacturing. 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. Lecture notes on college of engineering and technology. New and novel materials because of their greatly improved chemical, mechanical and thermal properties are sometimes impossible to machine using traditional machining processes. Relationship of machines, jigs and fixtures, and productive tooling to the machining of discrete components. Nonconventional machining processes selection using multiobjective 1449 journal of engineering science and technology november 2015, vol. Edmm 2540 machining processes course syllabus course description.
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