Depending on workpiece material and the condition of the tool, unit powerrequirements in machining range between 0. 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. The processes are non traditional or non conventional 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. 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. In view of these limitations, many nontraditional machining ntm methods h been developed since world war. 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. Nontraditional machining mechanical engineering, iitb. Non traditional machining ntm or non conventional machining ncm, is a kind of machining technology which is different from traditional machining process and equipment. Processes likeabrasive jet machining water jet machininglaser beam machininghot machiningplasma arc machininghave also been included. These methods form a group of processes which removes excess material by various techniques involving mechanical, thermal, electrical chemical energy or combination of. Conventional machining methods always produce some stress in the metal being cut. Advanced nontraditional machining processes springerlink. In unconventional machining, a form of energy is used to remove unwanted material from a given workpiece. Jan, 2016 brief introduction of non conventional machining processes.
Electrical discharge machining edm is one of the most widely used nontraditional machining processes. Difference between conventional and nonconventional machining process mechanical engineering world project ideas seminar topics e books pdf new trends 25 like material removal processes once again can be divided into mainly two groups and they are conventional machining processes and nontraditional manufacturing processes. Conventional machining processes and machine tools module. While making a part from raw material, one may require bulk removal of material, forming cavitiesholes and finally finishing as per the parts requirements. Extrusion process and its types by basic engineering duration. Both are machining processes and thus used for removing excess material. The advent of hard materials for aerospace applications have made the machining process by conventional methods very difficult and time consuming. It is a material cutting process that engages an abrasive tool whose cutting elements are grains of abrasive material known as grit. Buy nonconventional machining book online at low prices in. Introduction we all know that the term machinability refers to the case with which a metal can be machined to an acceptable surface finish. 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.
Lecture notes on modern manufacturing process dr pramod. Tools that belongs to reaming and tapping processes are tend to breakage so machinists should behave carefully not to break tapers and reamers pieces in the hole. For composites with dissimilar reinforcing phase and matrix e. Difference between conventional and nonconventional machining. Download it once and read it on your kindle device, pc, phones or tablets. Difference between conventional machining and nontraditional. By using the energy in the process thermal physics. The introduction of abrasives to the fluid jet enhances the machining efficiency and is known as abrasive water jet machining.
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. Non conventional machining process book pdf youtube. Jan 09, 2018 among the major non conventional fabrication techniques are electrochemical fabrication also called electrochemical machining or ecm, electrical discharge machining or edm, water jet cutting, abrasive water jet cutting wj, awj, laser beam mach. Conventional machining an overview sciencedirect topics. Ramkumar department of mechanical engineering iit kanpur march 26, 2018. Nontraditional machining processes are widely used to manufacture geometrically complex and precision parts for aerospace, electronics and automotive industries. Nadcap nonconventional machining ac7116 expert resource.
Jain department of mechanical engineering, indian institute of technology kanpur, kanpur208016, india. Conventional and nonconventional processes, second edition kindle edition by hassan abdelgawad elhofy. In conventional machining process a tool, which is harder than the work piece is forced on the work piece. Manufacturing process technology part i recommended for you. Buy nonconventional machining book online at best prices in india on. Classification of non traditional machining is based on following factors. 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.
Non conventional machining free download as powerpoint presentation. Book download link provided by engineering study material esm. The course is consists of all nonconventional manufacturing processes. Conventional and nonconventional processes book pdf by hassan abdelgawad elhofy machining remains a. This book covers the various advanced manufacturing processes employed by manufacturing industries to improve their productivity in terms of socioeconomic development.
Tools are non conventional technique like laser beam, electric arc etc. Non traditional machining processes book pdf, calculus purcell 9th edition pdf download, situations where traditional machining processes are unsatisfactory or uneconomical. It describes available technologies that use tools, such as high velocity material jets, pulsed magnetic fields, light beams, electrochemical reactions, and more. The authors present automated conventional and non conventional machining techniques as well as virtual machining. Mishra, nonconventional machining, narosa publishing house, new delhi, 2007. Pdf unconventional machining processes local author by dr. This book covers all possible topics needed in an undergraduate machining processes course. Pdf nonconventional machining processes selection using. He has referred more than five books among them minimum one is from. 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. Pdf unconventional machining processes local author by. Download pdf book for this subject and share to give us credit.
Limitations of conventional machining methods i increased workpiece hardness. Nontraditional machining the definitive guide machinemfg. His second book titled fundamentals of machining processes conventional and nonconventional processes has been appeared in september 2007 by crc, taylor and francis. Mishra, the institution of engineers india test book series, narosa publishing house 2005.
Conventional machining uses tools, such as lathes, milling machines, boring machines, drill presses, or. Comparison between conventional and nonconventional machining. Production technology book by p c sharma is undoubtedly one of the best choices of students when it comes to the manufacturing technology book because of detailed whys and hows of every topic which makes the things easy to remember as well as easy to apply in the manufacturing process lab. Materials are removed by traversing in a direction parallel to the axis of. How is classification of nontraditional machining done. This not only leads to higher success in daytoday production, but also increases the overall success of businesses. The truth about mobile phone and wireless radiation dr devra davis duration. Examples of conventional machining processes are turning, boring, milling, shaping, broaching, slotting, grinding etc. All aspects of mechanical, electrochemical and thermal processes are comprehensively covered.
What is the difference between conventional and non conventional machining processes or how the non conventional machining process differs. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. In conventional metal machining, oxygen is usually used, taking advantage of an exothermic chemical reaction to enhance the machining process, but argon or nitrogen are also used with cmcs. High speed machining and assembly high speed machined aluminum parts are replacing builtup parts made by forming and assembly riveting in the aerospace industry. Understand conventional and non conventional manufacturing term. Nonconventional machining in modern manufacturing systems. The book has both conventional and nonconventional machining process to teach you effectively. The non conventional manufacturing is designed to prepare interested students for future careers manufacturing industry where non conventional machines are used. Non conventional machining processes selection using multiobjective 1449 journal of engineering science and technology november 2015, vol. It is a material cutting process that engages an abrasive tool whose cutting elements are. Shan, modern machining processes, tata mcgraw hill publishing. Scribd is the worlds largest social reading and publishing site.
Several types of non traditional machining processes have developed to better machining condition. Finally, some geometries are too delicate to machine while others are too complex. Pdf unconventional machining processes senthil kumar. The coauthored book titled machining technologymachine tools and operations published by crc, taylor and francis in 2008. 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. 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 now have computer numerical control cnc machines. 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. This book is written to serve the needs of under graduate students embarking introductory course in unconventional machining processes. Modern machining methods are also named as non conventional machining methods. Use features like bookmarks, note taking and highlighting while reading fundamentals of machining processes. Manufacturing is the backbone of any industrialized nation. Nov 15, 2017 conventional and non conventional machining processes best engineer. Laser properties speed is given by material, its thicknes and power of the machine. Non conventional manufacturing processes question 1 b the areas of application of non conventional manufacturing processes are as follows.
Modern machining processes presents unconventional machining methods which are gradually commercial acceptance. Various similarities and differences between conventional machining and non traditional machining ntm processes are given below in table format. 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 processes are generally used when traditional methods are not technically or economically feasible. This is due to material removal rate mrr decreases with increased hardness of the work material. Nontraditional machining, utilizing electrical, chemical, and optical sources of energy. Advanced machining and manufacturing processes springerlink. In all these processes, except ion beam machining, abrasion of the workpiece takes. The aim of the mtcs non conventional machining ncm theme is to provide efficient, costeffective solutions for the manufacture of traditionally difficult to machine materials using stateoftheart spark erosion and laser technologies. Pdf the role of nonconventional machining processes ncmps in todays manufacturing environment has been well acknowledged. Unconventional machining process sasurie college of engineering.
Many advanced finishing processes have been employed to make circular andor non circular cavities and holes in difficulttomachine materials. This paper gives an introduction and a brief overview of various unconventional processes that are in practice nowadays. Cannot be used for machining castings or hot rolled steel, since hard outer scale will damage the cutter. The conventional machining processes are not capable of machining hard and heat resisting materials into complex shape. Edm being a non contact type of machining process, it is very well suited for making fragile parts which cannot take the stress of machining.
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. On successful completion of this module, the student should understand the fundamental concepts of non conventional manufacturing technologies and the differences with the conventional processes. Organized by type of process mechanical, chemical, electrochemical, and thermal, the book discusses 31. Tools are nonconventional technique like laser beam, electric arc etc. Pdf nonconventional machining processes selection using multi. Hence the machining process which utilizes other machining methods are termed as unconventional. Pdf manufacturing processes by hn gupta pdf download. Continuous improvements in machining practices have created opportunities for businesses to develop more streamlined processes. Material is vaporized by a laser, and the vapor removed by a jet of gas. Cutting rates for various materials and thicknesses using a co2 laser ipm material thickness 0. There is no physical contact between the tool and work piece, in some non.
Conventional and nonconventional processes, second edition. Non traditional manufacturing processes an overview. Conventional and nonconventional processes is the first textbook to collect all of the. Conventional and nonconventional processes written by hassan abdel gawad elhofy covers the fundamentals machining by cutting, abrasion, erosion and combined processes. Unconventional machining processes introduction and. This book provides a convenient, single source of information on advanced machining, material forming, and joining processes. Comparison between conventional and non conventional machining.
Brief introduction of nonconventional machining processes. Conventional and non conventional machining processes. Conventional machining processes and machine tools moduleiv. Introduction to non traditional machining processes prof. 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. The cutting tool and work piece are always in physical contact with relative motion with each other, which results in friction and tool wear. Each process has distinct capabilities and is suitable for specific purposes. Non conventional machining in modern manufacturing sys. Introduction to rapid prototyping, a ghosh, north west publication. When these machines are employed, they are many advantages over the traditional machining process. The book provides insight into the use of some basic processes existing today in the domain of nonconventional manufacturing machining.
What is the difference between conventional and non. Differences between conventional and non conventional machining processes. And, metal removal takes place due to shearing action. No conventional nonconventional 1 direct contact of tool and workpiece. Similarities between conventional machining and ntm. Manufacturing and technical staff in industry must know the various manufacturing processes, materials being processed, tools and equipments for manufacturing different components or products with optimal process plan. Mechanical machining ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes. Non conventional machining machining grinding abrasive. Pdf me6004 unconventional machining processes ump books. Grinding grinding is the most common form of abrasive machining. Non traditional manufacturing processes or unconventional machining processes. Difference between conventional and nonconventional. No conventional non conventional 1 direct contact of tool and workpiece. Ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes.
Pdf me6004 unconventional machining processes lecture notes. Senthil kumar, ars publications the book unconventional machining processes for engineering and technology studies. 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. It combines the physical energy electricity, magnetism, sound, light and heat, chemical energy and even mechanical energy to applied on the machining position. Download me6004 unconventional machining processes lecture notes, books, syllabus parta 2 marks with answers me6004 unconventional machining processes important partb 16 marks questions, pdf books, question bank with answers key. This is used for removing a layer of metal material, either shallow. Pdf me6004 unconventional machining processes lecture. Abrasive water jet machining micro edm electric discharge grinding and drilling electrostream drilling electrochemical deburring. However, machining processes inevitably waste material in the form of chips, production rates may be low, and unless carried out properly, the processes can have detrimental effects on the surface properties and performance of parts.
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