Cutting tool is harder than work piece at room temperature as well as under machining conditions nonconventional manufacturing processes is defined as a group of processes that. Mechanical interaction based non conventional machining processes after elhofy, 20 mechanical non conventional processes usm wjm abrasion ma cutting c abrasives jet. 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. And, metal removal takes place due to shearing action.
Lecture on non conventional machining process by mech zone. Senthil kumar, ars publications the book unconventional machining processes for engineering and technology studies. Classification of metal removal processes and machine tools. This will generate high heat energy and melts and vaporize metal from work piece. Materials are removed by traversing in a direction parallel to the axis of. Non conventional machining methods also provide very good quality of surface finish which may also be an encouragement to these methods. 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 abrasive machining processes ultrasonic, abrasive jet and abrasive water jet machining video. Automatic tool changer pallet shuttles automatic workpart positioning cnc turning center. Introduction to non traditional machining processes. Pdf nonconventional machining processes selection using.
Process oriented involving use of thermoplastic polymer that changes to a liquid upon the application of heat and solidifies to a solid when cooled materials injected through indexing nozzles onto a platform. Conventional machining process involved tool wearing as there is a physical contact between the tool and the work piece. The process of metal removal by electro chemical dissolution was known as long back as 1780 ad but it is only over the last couple of decades that this method has been used to advantage. In conventional machining process a tool, which is harder than the work piece is forced on the work piece. 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 medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. Both are machining processes and thus used for removing excess material. Ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes. Introduction to nontraditional machining processes prof. What is the difference between conventional and non conventional machining processes or how the non conventional machining process differs. Introduction we all know that the term machinability refers to the case with which a metal can be machined to an acceptable surface finish. Depending on workpiece material and the condition of the tool, unit powerrequirements in machining range between 0. No conventional nonconventional 1 direct contact of tool and workpiece. 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.
In nonconventional machining process there was no physical contact between workpiece and the tool. This book covers all possible topics needed in an undergraduate machining processes course. The introduction of abrasives to the fluid jet enhances the machining efficiency and is known as abrasive water jet machining. We are here to provides you the best study notes from best coaching like made easy, ace academy etc and lecture notes from best institutions like mit open course, iit nptel, crec tirupati, washington, middle east.
Introduction to nontraditional machining iit kanpur. Various similarities and differences between conventional machining and nontraditional machining ntm processes are given below in table format. Pdf unconventional machining processes local author by. 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. This paper presents a new method in machining of materials using cavitation process. Gate 2021 mechanical notes gate mechanical preparation study material sk mondal notes better for the preparation of gate examination. With ever increasingdemand formanufactured goods of hard alloys and metals, such as inconel 718 ortitanium, moreinterest has gravitated to nonconventional machining methods. Conventional machining processes and machine tools module. History the early ancestors of modern humans, likely first used a jawbone of bovid animals as a saw. In 1926, the first saw which worked with electricity was invented by andreas stihl. In this lesson, difference between conventional and unconventional machining have been explained. 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. Difference between conventional and nonconventional machining processes are.
A machining process is called nontraditional if its material removal mechanism is basically different than those in the traditional processes, i. Electron beam machining is same as laser beam machining process in which except laser, high speed electron beam impinges on work piece. Subscribe our channel for more interesting articles. Electro discharge machining edm is considered to be one of the most successful non conventional machining process, find a wide range of applications for production of complicated shapes, micro holes with high accuracy in various electrically conductive materials and highstrength temperatureresistant alloys. Conventional machining uses tools, such as lathes, milling machines, boring machines, drill presses, or. Until at least the mid19th century, saws were made laboriously by hand.
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. The conventional machining processes are not capable of machining hard and heat resisting materials into complex shape. What is hybrid manufacturing and classification of hybrid. Nontraditional machining processes are widely used to manufacture geometrically complex and precision parts for aerospace, electronics and automotive industries. Classify different non traditional machining processes. Edm typically works with materials that are electrically conductive, although methods have also been proposed for using edm to machine insulating ceramics. Hence the machining process which utilizes other machining methods are termed as unconventional. These processes are generally used when traditional methods are not technically or economically feasible. Limitations of conventional machining methods i increased workpiece hardness. 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. This machining process is especially ideal for cutting.
The advent of hard materials for aerospace applications have made the machining process by conventional methods very difficult and time consuming. Mar 31, 2017 it is a non traditional machining process in which no physical tool is used. Apr 02, 2017 this is all about nontraditional machining process, requirements, types, advantages and disadvantages. Conventional machining can be defined as a process using mechanical motionenergy. Examples of conventional machining processes are turning, boring, milling, shaping, broaching, slotting, grinding etc. The classification and components of mechanical interaction for non conventional machining processes is shown in figure 1. In conventional machining processes, there is a risk of tool wearing since physical contact is required to perform the job.
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. Download nontraditional manufacturing processes by gary f. Pdf me6004 unconventional machining processes ump books. Pdf nontraditional manufacturing processes by gary f. 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. Non traditional manufacturing processes an overview. A machining process is called non traditional if its material removal mechanism is basically different than those in the traditional processes, i. It is also known as contactless electrochemical forming process. Nonconventional machining iit notes machining composite. Non conventional machining utilizes other forms of energy. The non conventional manufacturing is designed to prepare interested students for future careers manufacturing industry where non conventional machines are used.
Manufacturing process study notes handwritten free pdf. It includes detailed information to gain insight into the manufacturing processes which are new, unconventional and list out the the. Unconventional machining processes introduction and. The book has both conventional and nonconventional machining process to teach you effectively. A new nontraditional machining method using cavitation process. Among the major nonconventional 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. The common nontraditional machining processes are described in this section. Nov 26, 2017 brief overview and introduction to electrochemical machining, electrode discharge machining, ultrasonic machining, abrasive jet machining, material removal r. 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. To distinguish the nontraditional machining ntm processes from the traditional or conventional ones, it is necessary to.
Conventional machining also costs in terms of tool wear and in loss of quality in the product owing to induced residual stresses during manufacture. A mechanical conventional single cutting or ma action process can be combined with the respective machining phases of electrodischarge ed in electrodischarge. We are here to provides you the best study notes from best coaching like made easy, ace academy etc and lecture notes from best institutions like mit open course, iit nptel, crec tirupati, washington, middle east technical university etc. Singhmelkotecolton 49 turning average cutting speed, vavg.
It is a nontraditional machining process in which no physical tool is used. Mechanical engineering manufacturing processes ii nptel. Nontraditional machining, utilizing electrical, chemical, and optical sources of energy. Gate 2021 mechanical notes sk mondal free download pdf. By using the energy in the process thermal physics. Tools are non conventional technique like laser beam, electric arc etc. The unconventional machining is also called as non traditional 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. These methods can be classified as the basis of their base principle of working. Non traditional abrasive machining processes nptel. The electrodischarge machining process was introduced to industry the 1950s. Paul,department of mechanical engineering, iit kharagpur.
Classification of non traditional machining methods. Module 3 selection of manufacturing processes nptel. Jun 20, 2016 the advent of hard materials for aerospace applications have made the machining process by conventional methods very difficult and time consuming. Non conventional machining processes selection using multiobjective 1449 journal of engineering science and technology november 2015, vol. If you have any query regarding this article, ask by commenting. 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. Lecture series on manufacturing processes ii by prof.
Davg n davg is the average diameter of workpiece n is the spindle speed in rpm. 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. Modern machining unit 5 modern machining method method structure. May 05, 2017 conventional and non conventional machining processes. Given this, non traditional machining is widely utilized in responding to modern industrial problems. Nonconventional tools are more accurate and precise than the conventional tool. Material is removed from the work piece by a series of rapidly recurring current discharges between two electrodes, separated by a dielectric liquid. Hello everyone welcome to engineers academy topics covered.
Non traditional manufacturing processes an overview introduction 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. The classification and components of mechanical interaction for nonconventional machining processes is shown in figure 1. What is the difference between conventional and non. This is due to material removal rate mrr decreases with increased hardness of the work material. 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. This book is written to serve the needs of under graduate students embarking introductory course in unconventional machining processes. Mechanical interaction based nonconventional machining processes after elhofy, 20 mechanical nonconventional processes usm wjm abrasion ma cutting c abrasives jet. In 1927, emil lerp invented a saw that works with using oil in germany. This is all about nontraditional machining process, requirements, types, advantages and disadvantages. 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. Difference between conventional machining and nontraditional. Machining centers machining center highly automated machine tool capable of performing multiple machining operations under cnc control.
Jan 21, 20 with ever increasingdemand formanufactured goods of hard alloys and metals, such as inconel 718 ortitanium, moreinterest has gravitated to non conventional machining methods. Conventional machining processes and machine tools moduleiv. Nonconventional machining iit notes free download as pdf file. Brief overview and introduction to electrochemical machining, electrode discharge machining, ultrasonic machining, abrasive jet machining, material removal r. In edm material removal takes place as a result of occurring plasma channel erosion effect between tool electrode and workpiece surface, separated by dielectric.
Electrical discharge machining is a machining method primarily used for hard metals or those that would be very difficult to machine with traditional techniques. This gate study preparation material for mechanical engineering may be useful for students who preparing for gate 2021. This is not true when it comes to nonconventional machining processes. Understand conventional and non conventional manufacturing term. The nonconventional manufacturing is designed to prepare interested students for future careers manufacturing industry where nonconventional machines are used. It includes detailed information to gain insight into the manufacturing processes which are new.
Conventional machining process have many advantages over non conventional machining process as they are more precise, now wear of tool, no heat generation etc. Similarities between conventional machining and ntm. The common non traditional machining processes are described in this section. Nonconventional process promoted longer tool life because no direct contact is made between the tool and the materials. If you like this article, dont forget to share it on your social networks.
What is hybrid manufacturing and classification of hybrid machining process technological improvement of machining processes can be achieved by combining different machining actions or phases to be used on the material being removed. Tools are nonconventional technique like laser beam, electric arc etc. Ramkumar department of mechanical engineering iit kanpur march 26, 2018. There can be a very long list of non conventional machining methods. Understand conventional and nonconventional manufacturing term. 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. For example ultrasonic machining, abrasive jet machining, water jet machining process etc.
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 manufacturing process som study notes will help you to get conceptual deeply knowledge about it. Each process has distinct capabilities and is suitable for specific purposes. Difference between conventional and nonconventional. Unconventional machining by harshit aggarwal unacademy plus. 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. Nonconventional machining utilizes other forms of energy. 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.
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