In elastic emission machining process, machining is carried. Download that books into available format 2019 update. Note for unconventional machining process ump lecture notes, notes, pdf free download, engineering notes, university notes, best pdf notes, semester, sem, year. Difference between conventional and nonconventional machining processes are. 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. You can find them according to your branch and subject in the below link national mission on education through ict this was initiated by iit madras. A similar example exists for the fa18 bulkhead boeing, st. When these machines are employed, they are many advantages over the traditional machining process. Water jet machining wjm is a mechanical energy based non traditional machining process used to cut and machine soft and non metallic materials. Unconventional machining processes introduction and. Examples of conventional machining processes are turning, boring, milling, shaping, broaching, slotting, grinding etc. Pdf nonconventional energy resources by b h khan book free.
Conventional machining process involved tool wearing as there is a physical contact between the tool and the work piece. Nocnon traditional abrasive machining processes ultrasonic, abrasive jet. An introduction to machining practices cornell university. It involves the use of high velocity water jet to smoothly cut a soft workpiece. Milling machines a milling machine is a power driven machine that cuts by means of a multitooth rotating cutter. Conventional machining processes and machine tools module. Because of point cutting wjc is able to cut materials almost any pattern. The former onesprovide basic shape and size to the material as per designers requirement. Cannot be used for machining castings or hot rolled steel, since hard outer scale will damage the cutter. Manufacturing processes i nptel online videos, courses. Where by reduced the machining time for 36% in accordance to conventional machining and made a total savings of 45. As contrasted to the additivejoining processes covered in the course manufacturing processes 1viz.
If you like this article, dont forget to share it on your social networks. Classification of non traditional machining is based on following factors. Nov 26, 2017 brief overview and introduction to electrochemical machining, electrode discharge machining, ultrasonic machining, abrasive jet machining, material removal r. Louis going from 90 pieces sheetmetal buildup to 1 piece. Unconventional machining by harshit aggarwal unacademy plus. Unsubscribe from manufacturing process technology part i.
Difference between conventional and nonconventional. 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. Brief introduction of nonconventional machining processes manufacturing process technology part i. Electrical discharge machining is a machining method primarily used for hard metals or those that would be very difficult to machine with traditional techniques. Several types of non traditional machining processes have developed to better machining condition. Lecture on non conventional machining process by mech zone. Edm typically works with materials that are electrically conductive, although methods have also been proposed for using edm to machine insulating ceramics 8 9. Mechanical machining i jet machining and ultrasonic machining usm are typical examples of single action, mechanical non traditional machining processes. A mechanical conventional single cutting or ma action process can be combined with the respective machining phases of electrodischarge ed in electrodischarge. 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. Ecm process non conventional machining process is the metal removal by controlled dissolution of anode of an electrolytic cell. The mill is constructed in such a manner that the fixed workpiece is fed into the rotating cutter. Nonconventional energy resources by b h khan pdf free download.
The difficulty to cut materials encouraged efforts that led to the introduction of the unconventional machining. Machining processes, which include cutting, grinding, and various non mechanical chipless processes, are desirable or even necessary for the following basic reasons. Nonconventional machining processes selection using multiobjective 1449 journal of engineering science and technology november 2015, vol. In edm material removal takes place as a result of occurring plasma channel erosion effect between tool electrode and workpiece surface, separated by dielectric. It is a material cutting process that engages an abrasive tool whose cutting elements are grains of abrasive material known as grit.
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. Part can be fixtured using window frame type fixture. Unconventional machining process nov,dec2014, may 2014 r2008,unconventional machining process may 2014 r2008,2010,unconventional machining process nov,dec20,unconventional machining process dec2012,unconventional machining process ap,may2008,unconventional machining process may2009,unconventional machining process nov,dec2009,unconventional. 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. Understand of fundamentals of the non traditional machining methods and industrial applications. Meet tight tolerance requirements compared to similar conventional machine tools. Lecture notes on modern manufacturing process dr pramod. The course takes us through the fundamentals of different machining processes, and optimization of a chain of processes through which a part undergoes. Pdf nonconventional machining processes selection using. All aspects of mechanical, electrochemical and thermal processes are comprehensively covered. There can be a very long list of non conventional machining methods.
This process is particularly suitable for high strength temperature resistant materials which are difficult to machine by conventional machining process tool. So, the hardness of the material is no longer a dominating factor for edm process. The main reasons for choosing nontraditional machining processes are. 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. Gate 2021 mechanical notes gate mechanical preparation study material sk mondal notes better for the preparation of gate examination. Machining is a part of the manufacture of many metal products, but it can also be used on materials such as wood, plastic, ceramic, and composites. Introduction to nontraditional machining iit kanpur. Conventional machining utilizes cutting tools that must be harder than workpiece material. In this lesson, difference between conventional and unconventional machining have been explained. Machining processes produce finished products with a high degree of accuracy and surface quality. 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. Cutting angle, constant cutting force, efficient machining, imachining technology.
Pdf me6004 unconventional machining processes ump books. How to download all of the lectures in pdf for a course in. A room, building, or company where machining is done is. The traditional machining processes rely on harder tool or abrasive material to remove the softer material whereas nontraditional machining processes such as edm uses electrical spark or thermal energy to erode unwanted material in order to create desired shape. I the machining medium is solid grains suspended in an abrasive slurry. Me 338 manufacturing processes ii department academic.
A person who specializes in machining is called a machinist. Brief introduction of nonconventional machining processes. Raditional machining processes are kinds of machining in which the removed materials from the workpiece surface are in the form of chips. You will find all pdf s and also as mp3 file for all video lectures which are in nptel. Modern machining processes presents unconventional machining methods which are gradually commercial acceptance. Ultrasonic machining is a nontraditional process, in which abrasives contained in a slurry are driven against the work by a tool oscillating at low amplitude 25100 microns and high frequency 1530 khz. This book covers all possible topics needed in an undergraduate machining processes course. Mechanical engineering manufacturing processes ii nptel. Varieties of cutters and holding devices allow a wide rage of cutting possibilities. Photochemical machining is a non conventional machining process which employs photoresist and chemical etching techniques. Electrochemical machining ppt machining electrochemistry. A new nontraditional machining method using cavitation. If such materials are machined with the help of conventional machining processes, either the tool undergoes extreme wear while machining hard workpiece or the workpiece material is damaged while machining brittle workpiece.
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. 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. Simply stated, it is an area where students, faculty, staff, and all other members of the cornell community. Conventional machining also costs in terms of tool wear and in loss of quality in the product owing to induced residual stresses during manufacture. Water jet and abrasive water jet machining csvtu mechanical. The improved thermal, mechanical and chemical properties of advanced materials super alloys, composites, and ceramics have created impediments in easy machining of such materials by conventional machining processes namely turning, milling and drilling etc. 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. In unconventional machining, a form of energy is used to remove unwanted material from a given workpiece. Subscribe our channel for more interesting articles. The electrodischarge machining process was introduced to industry the 1950s. This book is written to serve the needs of under graduate students embarking introductory course in unconventional machining processes. Non traditional machining jagadeesha t, assistant professor, med, national institute of technology, calicut ultrasonic machining definition.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. 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 and non conventional machining processes. With ever increasing demand for manufactured goods of hard alloys and metals, such as inconel 718 or titanium, more interest has gravitated to non conventional machining methods. With ever increasing demand for manufactured goods of hard alloys and metals, such as inconel 718 or titanium, more interest has gravitated to nonconventional machining methods. Water jet and abrasive water jet machining youtube. Hence, in studying wear progression, the cutting speed was varied 300, 400 and 500 mmin while the feedrate and depth of cut were kept constant at 0. A comparative study of working principle and applications of various non conventional machining processes. Nonconventional tools are more accurate and precise than the conventional tool. Taguchi mentioned that high precision and accuracy cannot be achieved using the conventional machining processes. Senthil kumar, ars publications the book unconventional machining processes for engineering and technology studies. Non traditional abrasive machining processes ultrasonic, abrasive jet and abrasive water jet machining video.
Classification of metal removal processes and machine tools. Objective of presentation at the end of this presentation, audience will be aware of merits of non conventional machining processes over their traditional counterparts. Basics of fixturing and metrology are also covered in this course. 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. Machining with a difference thats what nonconventional machining is all about. Unconventional machining process unit 1 introduction prepared by s. Non conventional machining processes linkedin slideshare. It is now well established that unconventional machining processes are able to meet the challenges posed by the demand for economic machining of ultrahard and high strength materials to close tolerances. References module 9 nonconventional machining iit kharagpur. They are classified under the domain of non traditional. Thus, high degree of precision and accuracy cannot be achieved.
Also, the fixtures and tools should be rigid enough to avoid vibration or deflection under the high hydraulic forces to which they are subjected. New and novel materials because of their greatly improved chemical, mechanical and thermal properties are sometimes impossible to machine using traditional. What is hybrid manufacturing and classification of hybrid. How is classification of nontraditional machining done. Brief overview and introduction to electrochemical machining, electrode discharge machining, ultrasonic machining, abrasive jet machining, material removal r. Jain, department of mechanical engineering, iit kanpur. Non traditional machining is also called advance manufacturing process. Over the last decade, most of unconventional processes emerged swiftly from the laboratory research to production lines across the country. Nptel provides elearning through online web and video courses various streams. This gate study preparation material for mechanical engineering may be useful for students who preparing for gate 2021. Traditional machining processes consist of turning, boring, drilling. Non conventional machining methods also provide very good quality of surface finish which may also be an encouragement to these methods. This is because, in conventional machining, there is a direct contact between the tool and the workpiece.
What are the advantages of wjc over conventional cutting methods. The need to a avoid surface damage that often accompanies the stresses created by conventional machining. The book has both conventional and nonconventional machining process to teach you effectively. 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. Note for unconventional machining process ump by jntu heroes. In this article we will discuss about the nonconventional methods of machining used in industries. High speed machining and assembly high speed machined aluminum parts are replacing builtup parts made by forming and assembly riveting in the aerospace industry. The aim of the mtcs nonconventional 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.
Kenniston machine meets the precise specifications of our customers two ways. 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. Notice the workbench changes, but the part stays the same. Compare conventional and non conventional machining and analyze the different elements of ultrasonic machining and its applications. Manufacturing processes can be broadly divided into two groups and they are primarymanufacturing processes and secondary manufacturing processes. Department of production engineering and metallurgy prepared. Flexibility with accuracy, repeatability, reduced scrap, high production rates, good quality. Non conventional machining processes enable us to get consistency and accuracy in our desired manufacturing techniques. Advance non conventional machining methods are following. Ultrasonic machining national institute of technology. Conventional machining processes and machine tools moduleiv. Nontraditional manufacturing processes or unconventional machining processes conventional machining processes mostly remove material in the form of chips. Efficient material removal technologies for demanding applications.
It is well established that in conventional machining, in comparison to the depth of cut and feedrate, cutting speed is a dominant parameter on tool wear. A method of manufacturing known as additive manufacturing, due to the fact that instead of removing material to create a part, the process adds material in successive patterns to create the desired shape. This process involves no contact between the machine tools and material. Classification of non traditional machining methods. Unconventional machining process anna university question. Nontraditional manufacturing processes is defined as a group of processes that. Identify and utilize fundamentals of metal cutting as applied to machining. Gate 2021 mechanical notes sk mondal free download pdf. 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. The course is consists of all nonconventional manufacturing processes. Highly skilled engineering and the latest programming software and machine tool technologies. Several types of nontraditional machining processes have been developed to meet extra required machining. There is also a z axis long which only the bed moves verticaly.
Our highly skilled craftsman have more than 100 years of machining experience. Non traditional manufacturing processes an overview. Page 2 the emerson laboratory what is the emerson laboratory. Non traditional machining processes linkedin slideshare. 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. Pdf unconventional machining processes local author by. Apr 02, 2017 this is all about non traditional machining process, requirements, types, advantages and disadvantages. Processes likeabrasive jet machining water jet machininglaser beam machininghot machiningplasma arc machininghave also been included. If you have any query regarding this article, ask by commenting. What is the difference between conventional and non.
Instructional objectives o list four different non conventional machining processes o differentiate between water and abrasive. Grinding grinding is the most common form of abrasive machining. These methods can be classified as the basis of their base principle of working. The process of nonconventional machining, on the other hand, employs modern and latest technology in processing. 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. Traditional machining methods are often ineffective in machining hard materials like ceramics and composites or machining under very tight tolerances as in micromachined components. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Photo chemical machining pcm also referred to as photo chemical milling. Groover, fundamentals of modern manufacturing 2e 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. Conventional machining uses tools, such as lathes, milling machines, boring machines, drill presses, or.