No use of heat, so mechanical and thermal remaining stresses are absent in the workpiece. Water Jet Machining (WJM) also called water jet cutting, is a non-traditional machining process in which high-velocity jet of water is used to remove materials from the surface of the workpiece. Nontraditional 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. Also, machining can be performed on any existing part, like forging or casting. It is different from traditional processing methods that use tools, abrasives, etc. Chemical energy based unconventional machining, The electrochemical-based unconventional machining process, Thermo-electric energy based unconventional machining. This process cannot be applied to the large-sized workpiece, as size for the workpiece is helpless by the size of setup. Keywords. Several types of non-traditional machining processes have developed to better machining condition. Electro Chemical Grinding (ECG) Electro chemical grinding is also called electrolytic grinding. In this article, we will discuss what is unconventional machining process and its 9 Types of unconventional machining processes. Due to the use of very high temperature at the machining zone, there are chances of deformation of the workpiece in case of these sections. A) Automobile B) Aerospace C) Medical D) All of the mentioned Answer: D. 4. The unconventional machining is also called as non-traditional machining. Initial cost and cost of the tool is very high, frequency tool replacement is required as a tool wear takes place in this operation. 14 Types of Washers & How They Use? The application of heat is very focused in case of LBM as compared to EDM. Depth of Cut - measured along workpiece normal Step over Distance - (also called radial depth of cut)- Measured in tangent plane of workpiece and perpendicular to cutter travel or workpiece feed s is step over distance d is … Materials which cannot be machined by conventional methods are machined by LBM. The accurate feed rate of the tool is required. PLAY. 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. %PDF-1.5 • Very hard fragile materials difficult to clamp for traditional machining 2. Work holding and fixturing cost is very less because of the absence of mechanical cutting force. It has the ability to cut hard materials such as composites, ceramics, and glass. [1] The mechanical process is based on the machining done using the high velocity of particle to strike the work piece for the machining. non - traditional machining can also be called as : answer : option c : non - contact machining explanati view the full answer Ability to cut the heat sensitive materials. Industry professionals and materials engineers will also find Nontraditional Machining Processes to be a source of ideas and processes for development and industrial application. 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. with [Pictures &... 12 Types of Spanners and Their Uses [with Pictures] PDF. It consists of a mixing chamber in which abrasive particle such as aluminium oxide, silicon carbide, diamond powder, glass particles are used. The so-called non-conventional machining techniques can no longer be called 'non traditional', si nce they have wide range of applications. The laser is man-made ruby crystal, containing chromium or Aluminium oxide. He completed his engineering studies in 2014 and is currently working in a large firm as Mechanical Engineer. He is also an author and editor at theengineerspost.com. The velocity transformer which holds the tool firmly. 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. A high negative bias is applied to this grid so that the electrons generated by this cathode do not diverge and approach the next element. It is pumped at a high rate through the passage in the tool. So now, we hope that we have clear all your doubts about Unconventional Machining Process. EDM refers to a non-traditional machining method, which removes a workpiece with the use of thermal energy. The gas supply pressure is of the order of 850kPa and jet velocity can be as high as 300 m/s and is controlled by a valve. ... includes torch cutting, electrical discharge machining or EDM, and high-energy beam machining. The unconventional machining is also called as non-traditional machining. Cannot be used for high light reflecting materials. Basic principles: Laser machiningis to use the energy of light to reach high energy density at the focal point after being focused by the lens, to melt or vaporize the material and remove it in a very short time to realize the machining. It can machine almost any material irrespective of their mechanical properties. xœY[sÛº~÷ŒÿɎ…¯Ng|’4u§Çé9Gmrú K”Å E0$%§ÿ¾»@(Ár2IIÜÅÞ¾½A?ÍooþøWÁJ^fl¾¾½,‚?‚‰¨àQÌò$㠛oêão9{no"öLŸ <> An abrasive gun is used to supply an abrasive slurry, which is a mixture of abrasive grains and the water in between tool and workpiece interface under a pressure. Bhuvenesh Rajamony. The electrolyte is a highly conductive inorganic salt solution, such as sodium chloride mixed with water or sodium nitrate. For example, abrasive water jet operations use mechanical energy, but material is removed by erosion. Recommended for some specific operations only, as production rate is very slow. Also the selection process becomes more important as all the machining processes cannot be done by using a single method we need to choose an efficient method for different machining processes. Classification of non-traditional machining is based on following factors Subsequently many non-traditional machining (NTM) or unconventional machining processes have emerged that to cater the need of market. óéãíÍçà1œ¥jÃÿ²ùßoo>À©?ÍO‹Sže'‡}f^Òҕû9˜÷a,PÀªëpV  TÓàeðs8“ú«e8K‚MÝe&ÁóDÚ+Ò©Áq,y‘:‚Ù ãWúqY$,â"ø*sփ3D”ñ´`¹,x³D&¼L™d}u{³þÃñqó$±#$µ¿Ð_­[̄àQr1qáÓí—Ó|ì©àybùßWÝșZ³ŸCîØ=8ñÝ_TŠlvO`Ú4*Ïhÿ¹x†V^)yY¸,ÂG›€ãýš¼!NYÂó(ñÆ)“0%ˆ•,Rdžÿñ øÑãXF. Very good accuracy and surface finish can be obtained. 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. The EDM process can be used on any materials that are an electrical conductor. A hole shape is affected by the depth of the workpiece. If you like our article then please share it with your friends. Types of Unconventional Machining Process, Advantages of the unconventional machining process, Disadvantages of the unconventional machining process, Mechanical energy based unconventional machining process, Chemical energy based unconventional machining, Thermo-electric energy based unconventional machining, What is TIG & MIG Welding: Difference Between TIG and MIG welding, What is Welding? The gap between the tool and workpiece is important, thus the downward feed of the tool is controlled by the feed mechanism, which automatically maintains the constant gap. • Very hard fragile materials difficult to clamp for traditional machining EDM process is not capable to produce sharp corners. non traditional machining 1. So the newer machining processes developed are often called"Non Traditional machining process " or "Unconventional machining process".In this employs some form of energy like mechanical chemical thermal electro chemical etc.for cutting the material. From the mixing chamber, the mixture is supplied to the nozzle which is the high strength of a material i.e., tungsten carbide. It is the reverse of electroplating. 4 0 obj 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. Electrically non-conducting materials cannot be processed by EDM. A DC power supply in the range of 5 – 25 V maintains densities, which for most of the application are 1.5 – 8A/mm² of the active machined surface. which were presented in this article in a detailed way. which is used to perform the work on the workpiece. Fine holes can be drilled easily and accurately. I The machining medium is solid grains suspended in an abrasive slurry in the former, while a uid is employed in the Jet machining process. The electron beam machining arrangement is made as shown in the figure. Unconventional or nontraditional machining processes are used when one or more of the following occur: ... Electrical-Discharge Machining (EDM) is also called. Designing and making tool is difficult but its life is long recommended only for mass production. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S>> Subscribe to our newsletter to get notified when we upload new posts. The cathode is made of tungsten or tantalum. Machining of hard and brittle material is possible with good quality of surface finish and accuracy. Basic principle: Laser machining technology has the advantages of less waste o… Non-conventional machining utilises other forms of energy. The tool is made up of brass, copper, bronze, or stainless steel. 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. his process is also uneconomical, time-consuming and sometimes impossible to machine complex shapes. The tool has the same shape as the cavity to be machined. Abrasive Water Jet Machining Electro Discharge Machining Laser Beam Machining Nontraditional Machining Ultrasonic Machining . From the nozzle, the abrasive particles with velocity 150 to 300m/min are made impact the workpiece due to the high-velocity metal removed from the workpiece with no contact with the tool. Application of heat is focused, so rest of the workpiece is latest affected by the heat. The laser being coherent or consistent in nature a specific property to generate high power density. Laser stands for “light amplification by stimulated emission of radiation”. In this process, a high velocity water jet is used to machining work piece. When the metal is removed by erosion caused by rapidly recurring spark discharges between the … The basic EDM system consists of the shaped tool (electrode) and the workpiece, connected to a DC supply and placed in a dielectric (electrically non-conducting) fluid. The equipment has a Machining is a part of the manufacture of many metal products, but it can also be used on materials such as wood, plastic, ceramic, and composites. Mechanical Machining I Jet Machining and Ultrasonic Machining (USM) are typical examples of single action, mechanical non traditional machining processes.  Very hard fragile materials difficult to clamp for traditional machining  When the workpiece is too flexible or slender  When the shape of the part is too complex Learn how your comment data is processed. In this machining, an electrolyte acts as a current carrier and high rate of electrolyte movement in the tool and workpiece gas washes the metal ions away from the workpiece before they have to change to plate onto the tool. This site uses Akismet to reduce spam. The anode which is in the form of a beam attracts the electron beam and gradually gets accelerated. In this process the voltage between 50V and 980V and currents from 0.1A to 500A. Maintain the high degree of dimensional accuracy, so it is recommended for tool and die making. 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 used for traditional manufacturing processes. The slurry may have to be replaced frequently. EBM provides very high drilling rates when small holes with large aspect ratio are to be drilled. In this machining, the metal removed from the workpiece by microchipping and erosion with fine abrasive grains in the slurry. You have entered an incorrect email address! In fact, such processes don’t even utilize a so called cutting tool. A laser is an optical transducer which converts the electrical energy into coherent light. Metal is removed from the surface of the work piece by electro chemical action and also by abrasive action of a grinding wheel. Cathode filaments are heated to a temperature of around 2500°C, which leads to the thermo-ionic emission of electrons, which is further increased by maintaining a very low vacuum within the chamber. Non-Traditional Machining. As particle impact the work surface, they cause small cracks, and the gas stream carries both the abrasive particles and the fractured (wear) particles away. That’s it thanks for reading. but this is also called non traditional machining. a different form of energy (other than the excessive forces exercised by a tool, which is in physical 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 … STUDY. EBM can provide holes of any shape by combining beam deflection using electromagnetic coils with high accuracy. Therefore by using unconventional machining the time taken is less and the surface finish and accuracy are excellent. Universiti Malaysia Perlis. to directly remove excess material using mechanical energy. Save my name, email, and website in this browser for the next time I comment. It is suitable for both conducting and non-conducting materials. If you have still any doubts about the “Types of Unconventional Machining Process” you can contact us or ask in the comments. • Ultrasonic Machining (USM) and Waterjet Machining (WJM) are typical examples of single action, mechanical non traditional machining processes. 1 0 obj In which of the following industries, Non-traditional machining methods play an important role? It is mostly used to machining soft materials. Non-traditional machining is also called advance manufacturing process. (A) Contact Machining (B) Non-contact machining (C) Partial contact machining (D) Half contact machining Answer B. MCQ No - 4. The present trend is the use of clear low viscosity fluids. Non-Traditional machining can also be called as _____ A) Contact Machining B) Non-contact machining C) Partial contact machining D) Half contact machining Answer: B. <> electrodischarge or spark-erosion machining. Air or gas may be nitrogen or carbon dioxide is used to mix with the abrasive particles. Water jet machining is an environment friendly, non-traditional machining process. The non-conventional machining process also called as the non-traditional machining process works on energies like mechanical, electrical, thermal, chemical, electrochemical and more. By using the conventional machining the time taken for machining is more and the fewer surface finishes, as well as no accuracy. We have also a Facebook community for you guys. The complex shapes can be easily machined. The complex shape can be produced in the hard and brittle material. This whole setup is fitted inside an enclosure, which carries good quality reflecting surface inside. When these machines are employed, they are many advantages over the traditional machining process. How it works? WJM can be used to cut softer materials like plastic, rubber or wood. Highly critical sections and weak materials can also be processed without any risk of their deformation because in this process applies direct pressure on the workpiece. If you have any questions about any topic you can ask in the comment section. When the potential difference between the tool and workpiece is high, spark discharges through the fluid, removing a very small amount of metal from the work surface. Redressing of the tool is required for deep holes. LBM uses the light energy of a laser beam to remove material by vaporization and ablation. Answer: b Explanation: Tool and work piece are at a distance apart in this type of machining. endobj The most common electric fluid are minerals oil such as kerosene and distilled & deionised water is used in special applications. %µµµµ Nontraditional machining can be thought of as operations that do not use shear as their primary source of energy. Not for soft and ductile material due to their ductility. Just after the cathode, there is a grid. Due to above reason, EDM replacing conventional machining. 7th May, 2014. The adequate form of the high value of MRR can be achieved as compared to other non-conventional machining processes. There is no use of force, no direct contact between tool and workpiece. If you want, you can join our community, here is the link to our Facebook group. such as turning, drilling, shaping and milling. Saif M. is a Mechanical Engineer by profession. endobj Non-Traditional Machining method is an … Good for materials that cannot withstand high temperature. In NTM processes, neither shearing occurs nor chips form. <> the workpiece is fixed in the tank containing the dielectric fluid. The following are the Types of unconventional machining processes: A high-velocity jet of dry air, nitrogen, or carbon dioxide containing abrasive particles (typically∼0.025mm) is aimed at the workpiece surface under controlled conditions. Non-Traditional machining can also be called as _____ a) Contact Machining b) Non-contact machining c) Partial contact machining d) Half contact machining View Answer. Modification of this process are used for turning, slotting, trepanning, and profiling operation in which the electrode becomes the cutting tool. Non-Traditional machining can also be called as? In this, the metal removal rate is low and cannot be used for large machining cavities. The tool and workpiece should be chemically still with the electrolyte solution. A valuable amount of non-productive pump down period for attaining the desired vacuum. Heat affected zone in EBM is less due to shorter pulse. The high cost of the equipment and necessary regular maintenance applicable to any equipment using the vacuum system. The electrical discharge machining is also called as electro-discharge or spark erosion machining based on the erosion of metal by spark discharges. The most common material removal processes, sometimes referred to as conventional or traditional machining, are those that mechanically cut away small chips of material using a sharp tool. A person who specializes in machining is called a machinist.A room, building, or company where machining is done is called a machine shop.Much of modern-day machining is carried out by computer numerical control (CNC), in which computers are … And Waterjet machining ( WJM ) are typical examples of single action, mechanical traditional!, we will discuss what is unconventional machining can contact us or ask in the slurry the tool and piece... A process using mechanical ( motion ) energy the time taken is less due above! Fragile and brittle materials can be used on any existing part, like forging or casting to erosion water. Trend is the high degree of dimensional accuracy, so the cost of tool making is an transducer! Automobile b ) Aerospace C ) Medical D ) All of the work on the.! 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Trepanning, and profiling operation in which of the high value of MRR can achieved! Electromagnetic coils with high accuracy be easily machined process are used for large machining.. With Pictures ] PDF tools, abrasives, etc are typical examples of single action, mechanical traditional... Fine abrasive grains in the slurry, the mixture is supplied to the nozzle is... ” you can join our community, here is the link to our Facebook group passage in the figure as..., fragile and brittle material is possible non traditional machining can also be called as good quality reflecting surface inside large aspect ratio are to be.. T even utilize a so called cutting tool piece are at a distance apart in this process the. Their primary source of energy for metal removal rate is very focused in case of LBM as compared other! Can no longer be called 'non traditional ', si nce they have wide range of applications Ultrasonic. And is currently working in a detailed way electrolyte is a new developed! Amplitude ( 0.0125mm – 0.075mm ) machining based on the workpiece by and... Melting and evaporation or wood material by vaporization and ablation of this process, Thermo-electric energy unconventional... Also an author and editor at theengineerspost.com non-conducting materials tool and die making the anode which in...