The volume discusses improvements on wellestablished unconventional machining processes and novel or hybrid machining processes as well as properties, fabrication techniques and machining of composite materials. No conventional nonconventional 1 direct contact of tool and workpiece. Nontraditional machining employs processes that remove material by various. Pdf me6004 unconventional machining process researchgate. Material removal is accomplished using electrical, chemical, mechanical and light energies during the last 55 years over 20 different nontraditional manufacturing processes have been invented and used successfully the requirements that. This volume will be of interest to academicians, researchers, and practicing engineers alike.
Unconventional machining processes can be broadly classified into several types based on four main criteria. Nontraditional machining, utilizing electrical, chemical, and optical sources of energy. Here we discuss the fundamentals, characteristics, classification and need of modern non traditional machining processes. Department of mechanical engineering, indian institute of technology kanpur. Conventional machining utilizes cutting tools that must be harder than workpiece material. Edm is the controlled erosion of electrically conductive materials by the initiation of rapid and repetitive spark discharge between the electrode tool to the cathode and work to anode. Abrasive jet machining water jet machining abrasive water jet machining ultrasonic machining.
Machining processes effect of nonconventional material removal 273 processes onthe surface integrity of the materials machined factors whichconstitute surface integrity 274 importance of surface integrity 275 9. Unconventional machining processes textbook is one of the famous textbook for engineering students. Nontraditional machining processes semantic scholar. This is more crucial for unconventional machining practices 4 having lack of record of studies focused on sustainability of unconventional machining processes 5. The introduction of abrasives to the fluid jet enhances the machining efficiency and is known as abrasive water jet machining. Unconventional machining process unit 3 electrical energy based processes. Machining is not only performed on the metal but it. Please find the attached pdf file of unconventional machining process important questions bank ump imp qusts. High speed machining and assembly high speed machined aluminum parts are replacing builtup parts made by forming and assembly riveting in the aerospace industry. All questions carry equal marks 1 a classify unconventional machining processes based on basic mehanism involved in the process and medium for tranfer of enrgies and type of energy. Download me6004 unconventional machining processes ump books lecture notes syllabus part a 2 marks with answers me6004 unconventional machining processes ump important part b 16 marks questions, pdf books, question bank with answers key, me6004. The advent of hard materials for aerospace applications have made the machining process by conventional methods very difficult and time consuming. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process.
The unconventional machining is also called as nontraditional machining the unconventional machining use for the machine the hard and brittle materials such as carbides, stainless steel, hastelloy, nitralloy, waspalloy, and any other that cannot be machined by a conventional process using the conventional machines such as lathe, milling, shaper, planer etc. The main reasons for choosing nontraditional machining processes are. This book is written to serve the needs of under graduate students embarking introductory course in unconventional machining processes. In fact, such processes dont even utilize a so called cutting tool. Extremely hard and brittle materials are difficult to machine by traditional machining processes such as turning, drilling, shaping and milling. 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. 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. Class lecture notes for third year,sixth semester unconventional machining process subject code. As the name suggest, unconventional machining method involves the use of modern and advanced technology for machine processing. Pdf unconventional machining processes local author by. This book is mainly useful for mechanical engineering students. The difficulty to cut materials encouraged efforts that led to the introduction of the unconventional machining processes that are well. In this short notes section we will cover the first unconventional machining process electric discharge machining edm. Mechanical machining i jet machining and ultrasonic machining usm are typical examples of single action, mechanical non traditional machining processes.
Objective type questions in unconventional machining. Subsequently many nontraditional machining ntm or unconventional machining processes have emerged that to cater the need of market. Unconventional machining process imp qusts pdf file ump important questions. 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. Pdf nontraditional machining process find, read and cite all the research you need on researchgate. In unconventional machining, a form of energy is used to remove unwanted material from a given workpiece. Scribd is the worlds largest social reading and publishing site. The text continually emphasizes fundamentals and complete mathematical analysis of the processes as well as. Pdf me6004 unconventional machining processes lecture. Introduction to nontraditional machining iit kanpur.
Me2026 is available here in pdf formats for you to download. This textbook is also useful to most of the students who are preparing. Tools used for cutting in unconventional methods are laser beams, electric beam, electric arc. Unconventional machining processes textbook pdf free download unconventional machining processes textbook pdf free download. Explain the reasons for the development of unconventionalmachining process.
The book unconventional machining processes offers an indepth study on various unconventional machining processes. 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. Many advanced finishing processes have been employed to make circular andor noncircular cavities and holes in difficulttomachine materials. In ntm processes, neither shearing occurs nor chips form. 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.
Unconventional machining processes introduction and. 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. Classification of unconventional machining processes based. Advanced nontraditional machining processes springerlink. Dynamic development in aircraft, automotive, chemical and medical industry is strictly connected with application of advanced engineering materials.
Pdf unconventional machining processes senthil kumar. 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. Advanced machining for quality and productivity incorporating the 2nd international conference on the behaviour of materials in machining, 1415 november 1991, viking hotel, york, institute of. View unconventional machining process question bank. Ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes. Types of unconventional machining processes based on energy used mechanical energy processes, chemical energy processes. Non traditional manufacturing processes an overview.
Pdf assessment of research needs for sustainability of. Advanced machining process mechanical engineering mcq. Singhmelkotecolton 49 turning average cutting speed, vavg. Several types of nontraditional machining processes have been developed to meet extra. Tools are nonconventional technique like laser beam, electric arc etc. Hence the machining process which utilizes other machining methods are termed as unconventional. Unconventional machining process sasurie college of engineering. Comparison between conventional and nonconventional machining. Nontraditional machining processes are widely used to manufacture geometrically complex and precision parts for aerospace, electronics and. Unconventional machining process imp qusts ump important. 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. Unconventional machining processes form an important part of the chapter of machining processes in the subject of manufacturing engineering for gate mechanical engineering.
I the machining medium is solid grains suspended in an abrasive slurry. Examples of conventional machining processes are turning, boring, milling, shaping, broaching, slotting, grinding etc. Senthil kumar, ars publications the book unconventional machining processes for engineering and technology studies. Unconventional machining processes need for nontraditional machining methods, classifications of modern machining processes, considerations in process selection, materials application, ultrasonic machining. There is no physical contact between the tool and the work piece in such process. This paper gives an introduction and a brief overview of various unconventional processes that are in practice nowadays. Introduction we all know that the term machinability refers to the case with which a metal can be machined to an acceptable surface finish. This book addresses issues essential to unconventional machining processes, covering all modern machining processes such as mechanical processes, electrochemical and chemical metal removal processes, and thermal metal removal processes. By conventional machining the mrr reduces with an increase in the work material hardness. Download the seminar report, notes, ppt and journals on the topic unconventional manufacturing process.
Need for development of nontraditional machining processes. Need for the development of unconventional machining methods unconventional 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. Davg n davg is the average diameter of workpiece n is the spindle speed in rpm. Unconventional machining processes textbook pdf free. Unconventional machining processes harness energy sources considered unconventional by yesterdays standards. Unconventional machining processes machining metalworking. Conventional machining uses tools, such as lathes, milling machines, boring machines, drill presses, or. Also, state the mechanism of material removal, transfer media and energy sources used. 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. 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. Advances in unconventional machining and composites.