Selection of nonconventional machining processes using the ocra method article pdf available in serbian journal of management 101 september 2014 with. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. Many advanced finishing processes have been employed to make circular andor noncircular cavities and holes in difficulttomachine materials. 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. 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. 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. 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. Conventional machining can be defined as a process using mechanical motionenergy. Conventional and non conventional machining processes.
Advanced analysis of nontraditional machining hong hocheng. 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. 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. Fundamentals of machining processesconventional and nonconventional. Nontraditional machining utilizes thermal, chemical, electrical, mechanical and. Modern machining processes presents unconventional machining methods which are gradually commercial acceptance. Introduction we all know that the term machinability refers to the case with which a metal can be machined to an acceptable surface finish. 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. A new nontraditional machining method using cavitation process. Nontraditional manufacturing processes is defined as a group of processes that remove. Conventional and nonconventional processes written by hassan abdel gawad elhofy covers the fundamentals machining by cutting, abrasion, erosion and combined processes. Advanced methods of machining download ebook pdf, epub.
Ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes. Conventional and nonconventional processes by hassan abdelgawad elhofy free download. Modern machining unit 5 modern machining method method structure. All aspects of mechanical, electrochemical and thermal processes are comprehensively covered. Hence the machining process which utilizes other machining methods are termed as unconventional. Lecture notes on modern manufacturing process dr pramod. Where the content of the ebook requires a specific layout, or contains maths or other special characters, the ebook will be available in pdf pbk format, which cannot be reflowed.
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. Comparison between conventional and nonconventional machining. This paper presents a new method in machining of materials using cavitation process. Senthil kumar, ars publications the book unconventional machining processes for engineering and technology studies. Until at least the mid19th century, saws were made laboriously by hand. Click download or read online button to get modern machining processes book now. Buy nonconventional machining book online at low prices in.
Given this, non traditional machining is widely utilized in responding to modern industrial problems. Pdf unconventional machining processes local author by dr. Mechanical machining ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes. Jain, is a comprehensive book for students pursuing mechanical engineering. Nonconventional processes such as electrical discharge machining edm could be one of the best suited method to machine such composites. This process cannot be applied to the largesized workpiece, as size for the workpiece is helpless by the size of setup. 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. 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. 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. Electrical discharge machining edm is one of the most widely used nontraditional machining processes. 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. Comparison between conventional and non conventional machining. Many advanced finishing processes have been employed to make circular andor non circular cavities and holes in difficulttomachine materials. The book has both conventional and nonconventional machining process to teach you effectively.
Non conventional machining methods also provide very good quality of surface finish which may also be an encouragement to these methods. 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 and nonconventional processes covers the fundamentals machining by cutting, abrasion, erosion, and combined processes. Jain advanced machining processes, authored by vijay k. The new edition has been expanded with two additional chapters covering the concept of machinability and the roadmap for. Processes likeabrasive jet machining water jet machininglaser beam machininghot machiningplasma arc machininghave also been included. Book download link provided by engineering study material esm. Depending on workpiece material and the condition of the tool, unit powerrequirements in machining range between 0.
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. Where the content of the ebook requires a specific layout, or contains maths or other special characters, the ebook will be available in pdf pbk. 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 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 methods can be classified as the basis of their base principle of working. 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. Modern machining processes download ebook pdf, epub, tuebl. In 1926, the first saw which worked with electricity was invented by andreas stihl. Nov 15, 2017 conventional and non conventional machining processes best engineer. In unconventional machining, a form of energy is used to remove unwanted material from a given workpiece. Written by an expert with over 40 years of experience in research and teaching machining and related topics, this new edition textbook presents the principles and theories of material removal and applications for conventional, nonconventional and hybrid machining processes. 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.
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. Unconventional machining processes textbook pdf free download. Materials are removed by traversing in a direction parallel to the axis of. 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. This book is mainly useful for mechanical engineering students.
This book covers all possible topics needed in an undergraduate machining processes course. In 1927, emil lerp invented a saw that works with using oil in germany. An investigation into nonconventional machining of metal matrix composites. Several types of nontraditional machining processes have been developed to meet extra. Advanced nontraditional machining processes springerlink. This is used for removing a layer of metal material, either shallow. A new nontraditional machining method using cavitation. Now everyone can become knowledgeable as to what these processes are capable of, how they work, and the advantages they offer over the more traditional machining technologies.
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. The common non traditional machining processes are described in this section. After going through this lesion, reader should be able to get an idea of electrical discharge machining and wire electrical discharge machining with complicated programming. One of the recently developing fields is that of nontraditional machining of particle reinforced metal matrix composites. No conventional non conventional 1 direct contact of tool and workpiece. This textbook is also useful to most of the students who are preparing. 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.
Because of point cutting wjc is able to cut materials almost any pattern. Non traditional manufacturing processes an overview. The new edition has been expanded with two additional chapters covering the concept of machinability and the roadmap for selecting. A typical nonconventional process is the machining of abrasive discs using diamond. Examples of conventional machining processes are turning, boring, milling, shaping, broaching, slotting, grinding etc. These notes and ebook on nontraditional machining have been. Using an automatic electrode changer with the nc machines makes the edm process completely from roughing to finishing operation. Nonconventional manufacturing processes question 1 b the areas of application of nonconventional manufacturing processes are as follows. Pdf selection of nonconventional machining processes. The common nontraditional machining processes are described in this section. A machining process is called non traditional if its material removal mechanism is basically different than those in the traditional processes, i. What is the difference between conventional and non. Clarifies the machinability concept and introduces the general guidelines for machining process selection.
It provides information on updated and advanced machine processes that are used today. Completely revised and updated, this second edition of fundamentals of machining processes. That has all been changed, since the publishing of carl sommer s latest book, the non traditional machining handbook. This book is written to serve the needs of under graduate students embarking introductory course in unconventional machining processes. Given this, nontraditional machining is widely utilized in responding to modern industrial problems. 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. Hassan elhofy this book maintains a proper balance between engineering and technology of the machining processes. Wjc will not burn surfaces or produces a heat an affected zone. Conventional machining uses tools, such as lathes, milling machines, boring machines, drill presses, or. Pdf unconventional machining processes local author by. Tools are nonconventional technique like laser beam, electric arc etc. In 1950, he invented first portable saw which has a. Metallic, nonmetallic and advanced composite materials of various thicknesses can be cut by this process. Modern machining processes download ebook pdf, epub.
What is the difference between conventional and non conventional machining processes or how the non conventional machining process differs. The course is consists of all nonconventional manufacturing 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. An investigation into nonconventional machining of metal. Assisted machining chapter 19 machinability chapter 20 machining process selection. No conventional nonconventional 1 direct contact of tool and workpiece. The introduction of abrasives to the fluid jet enhances the machining efficiency and is known as abrasive water jet machining. Electrically nonconducting materials cannot be processed by edm. Unit iii introduction to machining and its applications 1 lathe.
This is due to material removal rate mrr decreases with increased hardness of the work material. Buy nonconventional machining book online at best prices in india on. This machining process is especially ideal for cutting materials that cannot be cut by laser or thermal cut. By using the energy in the process thermal physics. This machining process is especially ideal for cutting. These processes are generally used when traditional methods are not technically or economically feasible. This textbook is also useful to most of the students who are preparing for competitive exams.
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. That has all been changed, since the publishing of carl sommer s latest book, the nontraditional machining handbook. Manufacturing is the backbone of any industrialized nation. Click download or read online button to get advanced methods of machining book now. Introduction to nontraditional machining iit kanpur. The technology developed in research laboratories cannot be brought to the shop floor. There can be a very long list of non conventional machining methods. Extrusion process and its types by basic engineering duration. Difference between conventional and nonconventional. The adequate form of the high value of mrr can be achieved as compared to other nonconventional machining processes. Unconventional machining processes textbook pdf free download unconventional machining processes textbook pdf free download. Non conventional machining utilizes other forms of energy.
Tools are non conventional technique like laser beam, electric arc etc. Unconventional machining processes introduction and. Download pdf book for this subject and share to give us credit. Selection of nonconventional machining processes using the ocra method article pdf available in serbian journal of management 101 september 2014 with 1,732 reads how we measure reads. Jun 20, 2016 the advent of hard materials for aerospace applications have made the machining process by conventional methods very difficult and time consuming. A machining process is called nontraditional if its material removal mechanism is basically different than those in the traditional processes, i. Unconventional machining processes textbook is one of the famous textbook for engineering students. Conventional machining processes and machine tools module. What particular nonconventional process might be suitable for the companies current product. 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. Nov 08, 2016 download pdf book for this subject and share to give us credit.
Nontraditional machining ntm lecture notes, ebook for final. What are the advantages of wjc over conventional cutting methods. Conventional machining processes and machine tools moduleiv. Unconventional machining processes textbook pdf free. Nontraditional machining processes are widely used to manufacture geometrically complex and precision parts for aerospace, electronics and.