A new nontraditional machining method using cavitation. Each of these ncmp is very complex machining process having its own unique characteristics, prerequisites and advantages. Written by an expert with 37 years of experience in research and teaching machining and related topics, this covers machining processes that range from basic conventional metal cutting, abrasive machining to the most advanced nonconventional and micromachining processes. The new edition has been expanded with two additional chapters covering the concept of machinability and the roadmap for selecting machining processes that meet. 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.
Advantages and limitation of non traditional machining 1. These processes are generally used when traditional methods are not technically or economically feasible. The role of nonconventional machining processes ncmps in todays manufacturing environment has been well acknowledged. 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. Nonconventional process promoted longer tool life because no direct contact is made between the tool and the materials. Machining is not only performed on the metal but it. The use of laser machining allows the production of small diameter holes, which may be required for film cooling in cmc components such as combustors which would be difficult to form in any other way. It is a nonthermal, nonchemical, creates no changes in the microstructures, chemical or physical properties of the workpiece and offers virtually stress free machined surfaces. Jun 20, 2016 hence the machining process which utilizes other machining methods are termed as unconventional machining or non traditional machining or advanced machining processes or modern machining processes. Abrasion and shear when small and hard metallic particles are made vibrating against the workpiece to be machined, the material is removed by shear action and abrasion. Material removal rate is low and the process overall is slow compared to conventional machining processes. What are the advantages and disadvantages of non conventional. Usm ultrasonic machining edm electric discharge machining ecm electro chemical machining laser machining.
Check, some other good books for machining processes. Many advanced finishing processes have been employed to make circular andor noncircular cavities and holes in difficulttomachine materials. Brief introduction of nonconventional machining processes. What is the difference between conventional and non. 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. Non conventional tools are more accurate and precise than the conventional tool. A decision guidance framework for nontraditional machining. Bekir sami yilbas, in the laser cutting process, 2018. Nontraditional machining method is an advanced method used to overcome the problems of traditional machining methods. Apr 02, 2017 today we will learn about non traditional machining processes requirement, types, advantages and disadvantages. Conventional machining involves the direct contact of tool and work piece, whereas unconventional machining does not require the direct contact of tool and wor piece.
Advanced nontraditional machining processes springerlink. And it covers both conventional and non conventional under the sun so that you dont have to look for different books for the same purpose. Why nontraditional processes are important need to machine newly developed metals and nonmetals with special properties that make them difficult or impossible to machine by conventional methods need for unusual andor complex part geometries that cannot easily be accomplished by conventional machining need to avoid surface damage that. The main advantages are its flexibility, low heat production. Comparison between conventional and nonconventional machining. Advantages of non conventional machining processes.
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. 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. 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. In the convention machining processes, tool is in direct contact with work piece. Definition, types, advantages and limitations pdf by mohammed shafi december 16, 2017 may 6, 2020 nontraditional machining method is an advanced method used to overcome the problems of traditional machining methods. In unconventional machining, a form of energy is used to remove unwanted material from a given workpiece. Ability to cut intricates hole shapes in a hard and brittle material. Q1 a discuss the development of non conventional machining processes. One of the main advantages of this process is that thin and fragilebrittle components can be machined without distortion. Advantages and limitation of non traditional machining slideshare. 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. Advantages of cnc over conventional machining fairlawn tool. It combines the physical energy electricity, magnetism, sound, light and heat, chemical energy and even mechanical energy to applied on the machining position.
When these processes are employed properly, they offer many advantages over nontraditional machining processes. The limitations of conventional machining processes. The common non traditional machining processes are described in this section. The various mechanical energy methods of ucm are ultrasonic machining, abrasive. All subtractive type manufacturing process are conventional manufacturing process in which w. When these processes are employed properly, they offer many advantages over non traditional machining processes. It is a non thermal, non chemical, creates no changes in the microstructures, chemical or physical properties of the workpiece and offers virtually stress free machined surfaces. Laser machining has a number of advantages over more conventional machining methods, e.
Difference between conventional and non conventional machining processes are. Non traditional machining ntm or non conventional machining ncm, is a kind of machining technology which is different from traditional machining process and equipment. Need for development of non conventional processes. Fundamentals of machining processes by hassan abdel contains total 16 chapters, such as cutting tools, maintainability, micromachining, high speed. No conventional nonconventional 1 direct contact of tool and workpiece. 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. Unwanted erosion and over cutting of material can occur. Electro discharge machining edm is an electrothermal and non conventional machining process, where material is removed due to thermal energy of the spark. Non conventional manufacturing process conventional manufacturing. Machining is one of the most important process of metal forming and shaping. It is based on unconventional machining techniques using laser beam, electron beam, electric arc etc. Unconventional machining processes introduction and.
Lecture notes on modern manufacturing process dr pramod. Conventional machining methods are, however, known to offer lowend product quality due to the abrasive reinforcement and inhomogeneous structure of kevlar. Pdf nonconventional machining processes selection using. Consequently, laser machining of kevlar offers considerable advantages over the conventional machining methods. Difference between conventional and nonconventional. May 04, 2018 there are two types of manufacturing process. The non conventional manufacturing processes are not affected by hardness, toughness or brittleness of material and can produce any intricate shape on any workpiece material by suitable control over the various physical parameters of the processes. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. Because of point cutting wjc is able to cut materials almost any pattern. Abrasive jet machining water jet machining abrasive water jet. There is no physical contact between the tool and work piece, in some non. Nonconventional machining processes, multi criteria decision making, selection, moora method.
Non conventional machining is a recent development in machining techniques. 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. Tools are non conventional technique like laser beam, electric arc etc. The cutting tool and work piece are always in physical contact with relative motion with each other, which results in friction and tool wear. Differences between conventional and non conventional machining processes. Non traditional manufacturing processes is defined as a group of processes that remove.
Materials are removed by traversing in a direction parallel to the axis of. Rough surface finish when at high rates of material removal. Mechanical machining ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes. Definition, types, advantages and limitations pdf by mohammed shafi december 16, 2017 may 6, 2020 non traditional machining method is an advanced method used to overcome the problems of traditional machining methods. 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. Non conventional machining process book pdf youtube. Non traditional manufacturing processes an overview. 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. Here today we are going to study definition, working process, principle, advantages, disadvantages, and application. Today we will learn about non traditional machining processes requirement, types, advantages and disadvantages. No conventional non conventional 1 direct contact of tool and workpiece. In order to realize the manufacturing machining demands thrived by newer, hard and difficulttomachine materials being utilized in the present day industries, an assortment of non traditional machining ntm processes has been developed over the past few decades. Many advanced finishing processes have been employed to make circular andor non circular cavities and holes in difficulttomachine materials. Several types of nontraditional machining processes have been developed to meet.
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. Wjc will not burn surfaces or produces a heat an affected zone. Completely revised and updated, this second edition of fundamentals of machining processes. Conventional machining uses tools, such as lathes, milling machines, boring machines, drill presses, or. Electro discharge machining edm is an electrothermal and nonconventional machining process, where material is removed due to thermal energy of the spark. Tools are nonconventional technique like laser beam, electric arc etc. 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. Selection of nontraditional machining process ijert. For effective utilization of the capabilities and advantages of.
Regarding these, nontraditional machining ntm processes have been developed since the world war ii largely in. Non traditional machining processes, also called advanced manufacturing processes, are employed where traditional machining processes are not feasible, satisfactory or economical due to special reasons as outlined below. What are the various mechanical energy methods of ucm. The main reasons for choosing nontraditional machining processes are. Conventional machining processes and machine tools moduleiv. Several types of nontraditional machining processes have been developed to meet extra required machining conditions. Unconventional machining process sasurie college of engineering. In unconventional machining, a form of energy is used to remove unwanted material from a.
Several types of non traditional machining processes have been developed to meet extra required machining conditions. 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 state of theart spark erosion and laser technologies. Today we will learn about nontraditional machining processes requirement, types, advantages and disadvantages. Conventional and nonconventional processes covers the fundamentals machining by cutting, abrasion, erosion, and combined processes. The traditional machining processes rely on harder tool or abrasive material to remove the. The main reasons for choosing non traditional machining processes are.
Through the centuries both the tools and energy sources to power these tools evolved to meet the increasing sophistication and complexity of mankinds ideas. Comparison between conventional and non conventional machining. Introduction to nontraditional machining iit kanpur. The nontraditional machining methods include, ultrasonic machining, laser beam machining, water jet machining, abrasive water jet machining, electron beam machining, etc. What are the advantages of wjc over conventional cutting methods. Advantages and limitation of non traditional machining. Analytic hierarchy process, analytic network process. Q2 a describe with figures the process of electro hydraulic forming b discuss advantages and limitations of explosive. 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 to new magnetic field assisted finishing processes. This is not true when it comes to nonconventional machining processes. Nontraditional machining the definitive guide machinemfg. The nonconventional manufacturing processes are not affected by hardness, toughness or brittleness of material and can produce any intricate shape on any workpiece material by suitable control over the various physical parameters of the processes. Conventional machining process involved tool wearing as there is a physical contact between the tool and the work piece.
Conventional machining an overview sciencedirect topics. Ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes. Feb 03, 2020 non conventional machining process book pdf. Conventional and non conventional machining processes duration. The common nontraditional machining processes are described in this section. Edm uses electrical energy to generate electrical spark which travels through a dielectric fluid at a controlled distance. Nonconventional tools are more accurate and precise than the conventional tool. In many cases, the engineering materials cannot be machined by traditional machining processes because of their shape and material type and other effective factors 3. In order to realize the manufacturingmachining demands thrived by newer, hard and difficulttomachine materials being utilized in the present day industries, an assortment of nontraditional machining ntm processes has been developed over the past few decades. Ability to cut fragile and heatsensitive material without damage. Here today we are going to study definition, working process, principle, advantages, disadvantages, and application note. In recent years there has been a massive growth in the usage of the non traditional machining process.