Traditional machining processes consist of turning, boring, drilling, reaming, threading, milling, shaping, planing, and broaching, as well as abrasive processes such as grinding, ultrasonic machining, lapping, and honing. Conventional machining an overview sciencedirect topics. There can be a very long list of non conventional machining methods. Consequently, non traditional techniques of machining are providing effective solutions to the problems imposed by the increasing demand for high strength temperature resistant alloys, the requirement of parts with intricate and compacted shapes and materials so hard as to defy machining by conventional. Non conventional machining free download as powerpoint presentation. Pdf selection of nontraditional machining process researchgate. Conventional machining processes mostly remove material in the form of. Electro discharge machining edm is an electrothermal and non conventional machining process, where material is removed due to thermal energy of the spark. Machining operations and part geometry each machining operation produces a characteristic part geometry due to two factors. Non conventional machining processes enable us to get consistency and accuracy in our desired manufacturing techniques. Nonconventional machining processes free download as powerpoint presentation. Senthil kumar, ars publications the book unconventional machining processes for engineering and technology studies.
The non traditional machining methods include, ultrasonic machining, laser beam machining, water jet machining, abrasive water jet machining, electron beam machining, etc. The course is consists of all nonconventional manufacturing processes. Lecture notes on modern manufacturing process dr pramod. Pdf nonconventional machining processes selection using multi. Unconventional machining processes kg reddy college of. Certified to weld aluminum, stainless steel 4, carbon and nickel alloys. Through the centuries both the tools and energy sources to power these tools evolved to meet the increasing sophistication and complexity of mankinds ideas. I the machining medium is solid grains suspended in an abrasive slurry in the former, while a uid is employed in the wjm process.
Manufacturing processes can be broadly divided into two groups and they are primarymanufacturing processes and secondary manufacturing processes. In conventional machining process a tool, which is harder than the work piece is forced on the work piece. Nonconventional machining in modern manufacturing systems. Innovative geometric design of products and components made of new exotic materials with desired tolerance, surface finish cannot be produced economically by conventional machining. A new nontraditional machining method using cavitation process.
Nontraditional machining the definitive guide machinemfg. Unconventional machining processes introduction and. Difference between conventional machining and non traditional machining ntm pintu 27042019 ntm by definition, machining is one of the secondary manufacturing processes by which excess material is gradually removed by shearing from a preformed blank in the form of solid chips using a wedge shaped cutting tool in order to get desired shape. These methods can be classified as the basis of their base principle of working. Non traditional machining method is an advanced method used to overcome the problems of traditional machining methods. Pdf the role of nonconventional machining processes ncmps in todays manufacturing environment has been well acknowledged. The following examples are provided where ntm processes are preferred over the conventional machining process. Images of the conformal cooling channels position in the mold cavity and core. The limitations of conventional machining processes. View non conventional machining research papers on academia. Non conventional tools are more accurate and precise than the conventional tool. Nadcap nonconventional machining ac7116 expert resource. Nonconventional machining processes selection using multiobjective 1449 journal of engineering science and technology november 2015, vol.
Brief introduction of nonconventional machining processes. Non traditional machining ntm or non conventional machining ncm, is a kind of machining technology which is different from traditional machining process and equipment. Explain each one of them by clearly mentioning its role. 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. The need to a avoid surface damage that often accompanies the stresses created by conventional machining. These processes are generally used when traditional methods are not technically or economically feasible. Non conventional machining research papers academia. 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. Materials are removed by traversing in a direction parallel to the axis of. Relative motions between the tool and the workpart generating part geometry is determined by the feed trajectory of the cutting tool 2. 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. A using conventional machining technologiesfrom left to right.
Non conventional machining processes selection using multiobjective 1449 journal of engineering science and technology november 2015, vol. Please switch to hard cover of fundamentals of machining process. In elastic emission machining process, machining is carried out by a spinning. Conventional machining uses tools, such as lathes, milling machines, boring machines, drill presses, or. Ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes.
Manufacturing technology and management techniques, more so the machining concepts have undergone a sea change in last four decades. This book is written to serve the needs of under graduate students embarking introductory course in. In this article we will discuss about the nonconventional methods of machining used in industries. Non conventional machining is a recent development in machining techniques. Non traditional manufacturing processes an overview. Nonconventional machining processes as viable alternatives. Call us for information on tooling specifications for machining composites.
Raditional machining processes are kinds of machining in which the removed materials from the workpiece surface are in the form of chips. Non conventional process promoted longer tool life because no. Classification of non traditional machining is based on following factors. When these machines are employed, they are many advantages over the traditional machining process. The difficulty to cut materials encouraged efforts that led to the introduction of the unconventional machining. Machining techniques conventional machining principles apply to composites. Taguchi mentioned that high precision and accuracy cannot be achieved using the conventional machining processes. Difference between conventional and nonconventional. What are the different variables which affect the metal removal rate in ajm. Shape of the cutting tool forming part geometry is created by the. In this article we will discuss about the non conventional methods of machining used in industries.
Conventional machining utilizes cutting tools that must be harder than workpiece material. Thus, high degree of precision and accuracy cannot be achieved. Conventional machining processes and machine tools moduleiv. Several types of non traditional machining processes have developed to better machining condition. The non conventional manufacturing is designed to prepare interested students for future careers manufacturing industry where non conventional machines are used. 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. No conventional non conventional 1 direct contact of tool and workpiece. May 19, 2014 nontraditional machining can be thought of as operations that do not use shear as their primary source of energy. Selection of nontraditional machining process ijert. Mechanical machining i abrasive jet machining, ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes.
Nonconventional machining process intro the conventional machining processes are not capable of machining hard and heat resisting materials into complex shape. 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. These new techniques of machining known as non conventional machining processes, are diverse in nature and differ from each other by their characteristi c features, operati on. In unconventional machining, a form of energy is used to remove unwanted material from a given workpiece. Conventional and non conventional machining processes.
Non conventional machining methods also provide very good quality of surface finish which may also be an encouragement to these methods. 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. Pdf unconventional machining processes local author by. Nontraditional machining ntm processes are now being widely used to generate. Tools are non conventional technique like laser beam, electric arc etc. Conventional machining is a general term which refers to the selective removal of. Difference between conventional and nonconventional machining processes are.
It combines the physical energy electricity, magnetism, sound, light and heat, chemical energy and even mechanical energy to applied on the machining position. Difference between conventional machining and nontraditional. Pdf nontraditional machining ntm processes are now being widely used to. For example, abrasive water jet operations use mechanical energy, but material is removed by erosion.
Aerospace techniques inc 1100 country club road middletown, ct 06457 united states this certificate demonstrates conformance and recognition of accreditation for specific services as listed in. The former onesprovide basic shape and size to the material as per designers requirement. Pdf nonconventional machining processes selection using. Comparison between conventional and non conventional machining. 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. This book is an attempt to present to the practicing engineers, managers, and research scholars in engineering industry and institutions the latest trends in machining and a glimpse of the future of machining. Previous years question papers question bank mbcet library kerala university previous years question papers, question bank b. Several types of nontraditional machining processes have been developed to meet extra. Machining techniques conventional machining principles. Fundamentals of machining processes by hassan abdel contains total 16 chapters, such as cutting tools, maintainability, micromachining, high speed machining, abrasives etc. It is based on unconventional machining techniques using laser beam, electron beam, electric arc etc. Machining centers machining center highly automated machine tool capable of performing multiple machining operations under cnc control.
Comparison between conventional and nonconventional machining. Jan, 2016 brief introduction of non conventional machining processes. Introduction to nontraditional machining iit kanpur. Nontraditional processes ntp nontraditional cutting. 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. This is not true when it comes to non conventional machining processes. What is the difference between conventional and non. Conventional machining process involved tool wearing as there is a physical contact between the tool and the work piece. In conventional machining processes, there is a risk of tool wearing since physical contact is required to perform the job. 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. 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. Laser micromachining and laser milling are two different categories of lbm process. 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.
Material removal processes 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. The advent of hard materials for aerospace applications have made the machining process by conventional methods very difficult and time consuming. A comparative study of process parameters in the selection of non traditional machining ntm processes for optimization 9 process utilizes highly collimated, monochromatic and coherent light beam to melt and evaporate the work material. Cad or from files produced by stereolithography stl.
Understand conventional and non conventional manufacturing term. Conventional machining methods hacettepe universitesi. Machining processes produce finished products with a high degree of accuracy and surface quality. The following examples are provided where ntm processes are preferred over. Advanced processes include electrical and chemical means of material removal, as well as the use of abrasive jets, water. 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. 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. 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. Machining processes, which include cutting, grinding, and various non mechanical chipless processes, are desirable or even necessary for the following basic. Nontraditional machining process is defined as a group of processes that remove excess material by various techniques involving mechanical, electrical, chemical and thermal energy used in nontraditional machining process. Jun 20, 2016 in conventional machining cutting tool must be harder than the work piece material. Edm uses electrical energy to generate electrical spark which travels through a dielectric fluid at a controlled distance. Non traditional machining is also called advance manufacturing process. Traditional machining methods are often ineffective in machining hard materials like ceramics and composites or machining under very tight tolerances as in micromachined components.
For non conventional machining process there is no direct contact between tool and work piece so cutting shear force not applicable for material remove and heat effected zone can be created. Dynamic fabrication is as9100 rev d iso 90012008 certified. Nonconventional methods of machining industries engineering. 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. 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. Explain how usm is different from other non conventional machining techniques.