It is also known as contactless electrochemical forming process. This gate study preparation material for mechanical engineering may be useful for students who preparing for gate 2019. Conventional machining involves the direct contact of tool and workpiece, whereas unconventional. Conventional machining processes mostly remove material in the form of. The process of impinging the highspeed stream of abrasive particles by highpressure gas or air on the work surface through a nozzle and metal removal occurs due to. Not proceduralizing all items which the checklists explicitly requires. Examples of conventional machining processes are turning, boring, milling, shaping, broaching, slotting, grinding etc. Non traditional manufacturing processes an overview.
Conventional machining has many disadvantages like tool wear which are not present in nonconventional machining. Other machining processes theres more than one way to skin a cat, as the old expression goes. 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. What is the difference between conventional and non. Senthil kumar, ars publications the book unconventional machining processes for engineering and technology studies. For composites with dissimilar reinforcing phase and matrix e. For example in laser jet machining, machining is carried out by laser beam. Ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes. 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. Unconventional machining process sasurie college of engineering. Seminar on non conventional machining report download abstract non traditional machining ntm processes are now being widely used to generate intricate and accurate shapes in materials, like titanium, stainless steel, high strength temperature resistant hstr alloys, fiberreinforced composites, ceramics, refractories and other difficulttomachine alloys having higher strength, hardness. May 05, 2017 conventional and non conventional machining processes. 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 used for traditional manufacturing processes.
Nonconventional machining processes machining the process of precise removing metal to form or finish a part, either with traditional methods like turning, drilling, milling, and grinding, or with non traditional methods. 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 objective of the research work reported here was an investigation of the effectiveness of nonconventional machining processes such as edm and laser applied to machine prmmc. For example ultrasonic machining, abrasive jet machining, water jet machining process etc.
The primary limitation is that conventional machining requires that a machinist be trained in the use of the appropriate machine tools to complete the tasks at hand. 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. Jun 11, 2018 hello everyone welcome to engineers academy topics covered. Pdf unconventional machining processes local author by. 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. 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. 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. Materials are removed by traversing in a direction parallel to the axis of. Non conventional machining machining grinding abrasive. Advanced nontraditional machining processes 303 work. This paper gives an introduction and a brief overview of various unconventional processes that are in practice nowadays. In unconventional machining, a form of energy is used to remove unwanted material from a given workpiece. Generally macroscopic chip formation by shear deformation.
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. Mechanical machining ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes. Extremely hard and brittle materials are difficult to machine by traditional machining processes such as turning, drilling, shaping and milling. Types of unconventional machining processes based on energy used mechanical energy processes, chemical energy processes. Conventional machining process have many advantages over non conventional machining process as they are more precise, now wear of tool, no heat generation etc. Each process has distinct capabilities and is suitable for specific purposes. Material is removed from the work piece by a series of rapidly recurring current discharges between two electrodes, separated by a dielectric liquid and subject to. Compared with conventional machining from basic cnc turning all the way up to 5axisedm has certain advantages and disadvantages. Electrochemical machining reverse of electroplating an electrolyte acts as a current carrier and high electrolyte movement in the toolworkpiece gap washes metal ions away from the work piece anode before they have a chance to plate on to the tool cathode. Classification of unconventional machining processes based on energy used unconventional machining processes add comments. Nontraditional machining processes manufacturing processes can be broadly divided into two groups. No conventional non conventional 1 direct contact of tool and workpiece. Conventional machining process like turning, shaping, grinding etc, but conventional machining process do not give a high surface finish as much required to.
What are nonconventional machining processes engineers. Nontraditional machining processes ppt download slideplayer. Cmsp conventional machining as a special process not detailing the coolant nozzle layout and positioning. Various similarities and differences between conventional machining and non traditional machining ntm processes are given below in table format. 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. 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 machining processes, also called advanced manufacturing. What is hybrid manufacturing and classification of hybrid. What is the difference between conventional and non conventional machining processes or how the non conventional machining process differs. Comparison between conventional and nonconventional machining. Machining processes, which include cutting, grinding, and various non mechanical chipless processes, are desirable or even necessary for the following basic reasons. Both are subtractive manufacturing processes topdown approach. Seminar on non conventional machining report download. Most of these nonconventional machining processes still need to be investigated in greater detail in order to assess their optimal machining conditions.
By using the energy in the process thermal physics. Scribd is the worlds largest social reading and publishing site. Modern machining unit 5 modern machining method method structure 5. In conventional metal machining, oxygen is usually used, taking advantage of an exothermic chemical reaction to enhance the machining process, but argon or nitrogen are also used with cmcs. The major characteristics of conventional machining are. Provide basic shape and size a free powerpoint ppt presentation displayed as a flash slide show on id. Demerits of conventional machining process i disposal and recycling of the chips are difficult and tedious process.
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. Non conventional process summary process description and capability ultrasonic machining usm chemical machining electricaldischarge machining edm highenergybeam machining laserbeam machining lbm electrical discharge machining edm introduction electrical. Gate 2019 mechanical notes sk mondal free download pdf. Fibers conventional machining process like turning, shaping, grinding etc, but conventional machining ppt. The common non traditional machining processes are described in this section. Nonconventional process promoted longer tool life because no direct contact is made. Difference between conventional and non conventional machining processes are. 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.
Ppt on machining and thermal cutting process powerpoint. Similarities between conventional machining and ntm. The major characteristics of non conventional machining. Non conventional tools are more accurate and precise than the conventional tool. Nontraditional machining ntm processes are now being widely used to generate intricate and accurate.
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. Both are machining processes and thus used for removing excess material. Introduction we all know that the term machinability refers to the case with which a metal can be machined to an acceptable surface finish. Aug 04, 20 ppt on machining and thermal cutting process. It is a non conventional mechanical machining method. Nontraditional manufacturing processes or unconventional machining processes. Non traditional manufacturing processes or unconventional machining processes. Conventional and non conventional machining processes. Hello everyone welcome to engineers academy topics covered. Conventional machining methods always produce some stress in the metal being cut. Tools are non conventional technique like laser beam, electric arc etc. This is not true when it comes to nonconventional machining processes. Electrical discharge machining edm is one of the most widely used nontraditional machining processes. Unconventional machining processes introduction and.
Conventional machining an overview sciencedirect topics. A machining process is called non traditional if its material removal mechanism is basically different than those in the traditional processes, i. 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. Similarly, theres typically more than one way to cut parts. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. Hence the machining process which utilizes other machining methods are termed as unconventional. Conventional machining processes and machine tools moduleiv. 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. These processes are generally used when traditional methods are not technically or economically feasible. Tool may not be harder and it may not be physical presence. 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. Gate mechanical notes gate mechanical preparation study material sk mondal notes better for preparation of gate examination. However in electrochemical machining there is a physical tool that is very much required for machining. Dec 10, 2015 me6004 unconventional machining processes lecture notes ppt. The advent of hard materials for aerospace applications have made the machining process by conventional methods very difficult and time consuming. This book is written to serve the needs of under graduate students embarking introductory course in unconventional machining processes. Comparison between conventional and non conventional machining. 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.
In unconventional machining, a form of energy is used to remove unwanted material from a. Introduction to non traditional machining processes. Not sufficiently detailing the procedure for cutting fluid maintenance. Introduction to nontraditional machining iit kanpur. Nontraditional machining processes the major characteristics of conventional machining are. It is regarding detail explanation of various industrial non conventional machining processes. 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. Nonconventional machining processes free download as powerpoint presentation. What is the difference between conventional and non conventional. Metallic, nonmetallic and advanced composite materials of various thicknesses can be cut by this process. Dec 29, 2012 in nonconventional machining process there was no physical contact between workpiece and the tool. This is due to material removal rate mrr decreases with increased hardness of the work material.
Turning, drilling, and milling are just a few of the most common machining processes. This post covers the construction of chassis, frame and body of the vehicle which is the one of the contents. All these limitations paved the way for finding out alternative machining processes that can satisfactorily process wide variety of materials and. 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 traditional machining authorstream presentation. Tools are nonconventional technique like laser beam, electric arc etc. Nontraditional manufacturing processes chemical machining cm electrochemical machining ecm electrodischarge machining edm laser cutting ultrasonic machining usm a free powerpoint ppt presentation displayed as a flash slide show on id. Difference between conventional and nonconventional. No conventional nonconventional 1 direct contact of tool and workpiece. Pdf unconventional machining processes senthil kumar.
Conventional machining uses tools, such as lathes, milling machines, boring machines, drill presses, or. Conventional machining process involved tool wearing as there is a physical contact between the tool and the work piece. This machining process is especially ideal for cutting materials that cannot be cut by laser or thermal cut. Advanced machining processes utilize chemical, electrical, and highenergy beams situations where traditional machining processes are. 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.
Ppt nontraditional manufacturing processes powerpoint. The introduction of abrasives to the fluid jet enhances the machining efficiency and is known as abrasive water jet machining. Non conventional machining free download as powerpoint presentation. Material is vaporized by a laser, and the vapor removed by a jet of gas. Classification of unconventional machining processes based. Me6004 unconventional machining processes lecture notes ppt. These advanced machining processes amp become still more important when one considers precision and ultraprecision machining. Machining the process of precise removing metal to form or finish a part, either with traditional methods like turning, drilling, milling, and grinding, or with non traditional methods that use electricity, heat, or chemical reaction. Nov 22, 2018 in the case of a drilling operation, by conventional methods, you can drill a hole of minimum 5mm and less than that is not possible because the drill bit cannot able to sustain the vibrations developed during the machining process and thats the reason, less than 5 mm holes can be done by advanced methods where there is a need of micromachining. 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. Nontraditional machining processes are widely used to manufacture geometrically complex and precision parts for aerospace, electronics and automotive industries. While this didnt use to be a major issue as schools had a number of vocational training programs that allowed students to be trained in the basic required. A machining process is called nontraditional if its material removal. In the case of a drilling operation, by conventional methods, you can drill a hole of minimum 5mm and less than that is not possible because the drill bit cannot able to sustain the vibrations developed during the machining process and thats the reason, less than 5 mm holes can be done by advanced methods where there is a need of micromachining.
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