Limitation of conventional machining process pdf

Also explore the seminar topics paper on micromachining with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019 2020. Machining is a term used to describe a variety of material removal processes in which a cutting tool removes unwanted material from a workpiece to produce the desired shape. The high frequency of monochromatic light will fall on the surface then heating, melting and vaporizing of the material take place due. Limitation of conventional manufacturing processes, need of unconventional manufacturing process and its classification.

Pdf the material and product accuracy limitations of rapid prototyped products can often prevent the use of rapid prototyping rp processes for. Material removal rate is low and the process overall is slow compared to conventional machining processes. Hence the machining process which utilizes other machining methods are termed as unconventional. If you want to make a large spaceexcavationpocket inside a piece of material with no seams or other holes to it, your choices are extremely limited. Nontraditional manufacturing processes or unconventional machining. The process of nonconventional machining, on the other hand, employs modern and latest technology in processing. Electro discharge machining edm is considered to be one of the most successful non conventional machining process, find a wide range of applications for production of complicated shapes, micro holes with high accuracy in various electrically conductive materials and. In this machining process metal is removed by melting and vaporization of metal particle from surface of work piece. The wire edm process can cut intricate components for the electric and aerospace industries. The personal needs of the operator are reducing the production rates. Explore micromachining with free download of seminar report and ppt in pdf and doc format. Laser beam machining lbm is a non conventional machining manufacturing process, a form of machining, in which a laser is directed towards the work piece for machining. What is the difference between conventional and non. For machining hard surface through conventional machining, we required a harder tool material which is sometime uneconomical and sometimes unavailable.

Laser beam machining is a thermal machining process which uses laser beam to produce heat. Unwanted erosion and over cutting of material can occur. This process uses thermal energy to remove material from metallic or nonmetallic surfaces. 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. Conventional machining process involved tool wearing as there is a physical contact between the tool and the work piece.

The limitations of conventional machining processes. Advantages and limitations the principal advantage of this process is that it is almost equally effective on any metal, regardless of its hardness or refractory nature. Electro discharge machining edm is an electrothermal and nonconventional machining process, where material is removed due to thermal energy of the spark. Conventional machining processes and machine tools moduleiv turning. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. 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. While making a part from raw material, one may require bulk removal of material, forming cavitiesholes and finally finishing as per the parts requirements. The approach to the problem was 1 to develop a machining center capable of electrical discharge machining bores having a lengthto. The common nontraditional machining processes are described in this section. It combines the physical energy electricity, magnetism, sound, light and heat, chemical energy and even mechanical energy to applied on the machining position. Nontraditional machining the definitive guide machinemfg. What is the limitation of conventional manufacturing process.

While this process is being completed off site, the necessary site work. Non traditional manufacturing processes an overview. Jain department of mechanical engineering, indian institute of technology kanpur, kanpur208016, india. The accuracy of the components produce is dependent on the efficiency of the operator. 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. Rough surface finish when at high rates of material removal. Introduction electro discharge machining edm is an electrothermal and non conventional machining process, where material is removed due t. These limitations of traditional machining can be eliminated by nontraditional machining process. The nontraditional machining methods include, ultrasonic machining, laser beam machining, water jet machining, abrasive water jet machining, electron beam machining, etc. Pdf conventional machining methods for rapid prototyping and. That cannot be produced by forming and sharping process. History the early ancestors of modern humans, likely first used a jawbone of bovid animals as a saw. The process are desirable or even necessary in manufacturing operations for following.

Conventional milling with high speed steel cutters is a better option to avoid deflection or chipping the tool. 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. In 1926, the first saw which worked with electricity was invented by andreas stihl. Principle and working and applications of unconventional machining process such as electrodischarge machining, electrochemical. The traditional machining processes rely on harder tool or abrasive material to remove the softer material whereas. Edm uses electrical energy to generate electrical spark which travels through a dielectric fluid at a controlled distance.

Pdf nontraditional machining process find, read and cite all the. Limitations of edm the main limitations of this process are. What is the limitation of conventional machining processes. Parts may possess external and internal geometric feature as well as sharp corners flatness etc. In 1927, emil lerp invented a saw that works with using oil in germany. A new nontraditional machining method using cavitation. Unconventional machining process is defined as a group of p rocesses that remove excess material by various techniques involving mechanical, thermal, electrical or chemica l. Today we will learn about laser beam machining principle, working, equipments, application, advantages and disadvantages with its diagram. Laser beam machining is a nonconventional machining method. Water jet machining an overview sciencedirect topics.

Nontraditional machining processes are widely used to manufacture geometrically complex and precision parts for aerospace, electronics and automotive. Conventional machining processes and machine tools module. The classification and components of mechanical interaction for nonconventional machining processes is shown in figure 1. If you could do it on a knee mill, an angle head can probably handle it, mr. 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. The benefits and limitations of machining with an angle head. Pdf me6004 unconventional machining process researchgate.

The workpiece is typically cut from a larger piece of stock, which is available in a variety of standard shapes, such as flat sheets, solid bars, hollow tubes, and shaped beams. Until at least the mid19th century, saws were made laboriously by hand. Material removal processes machining is the broad term used to describe removal of. Water jet machining wjm is a cold machining process by using high pressure water jet for various operations such as cutting, drilling, cleaning, finishing, polishing, wire striping, removal of road stripes, etc.

Different type of the conventional process such as turning, facing, milling, drilling are used generally for machining. This process can only be employed in electrically conductive materials. The machining process reduced the human efforts and increased the production rate with accurate dimension and good surface finish. Difference between conventional and nonconventional machining processes are. 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.

Nonconventional tools are more accurate and precise than the conventional tool. Introduction we all know that the term machinability refers to the case with which a metal can be machined to an acceptable surface finish. Hence 100% inspection of the component is required. 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. 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. On the machining side, plasma has been used successfully in conventional turning and milling of very difficult materials. Traditional machining processes consist of turning, boring, drilling. Unconventional machining process sasurie college of engineering. 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.

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. This is due to material removal rate mrr decreases with increased hardness of the work material. Unconventional machining processes introduction and. Non traditional machining ntm or non conventional machining ncm, is a kind of machining technology which is different from traditional machining process and equipment. Unconventional machining process linkedin slideshare. Advantages and disadvantages of ajm are given here.

Micromachining seminar report, ppt, pdf for mechanical. This process involves no contact between the machine tools and material. The advent of hard materials for aerospace applications have made the machining process by conventional methods very difficult and time consuming. In 1950, he invented first portable saw which has a motor. At the bottom of the articles you can easily download pdf. The benefits and limitations of machining with an angle. Advantages and limitation of non traditional machining slideshare. 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. Mechanical machining ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes. The edm process was investigated due to the fact that material hardness and toughness does not present a difficult problem. Given this, nontraditional machining is widely utilized in responding to modern industrial problems. Mechanical interaction based nonconventional machining processes after elhofy, 20 mechanical nonconventional processes usm wjm abrasion ma cutting c abrasives jet. Discuss the basic limitations of conventional machining process and.

This paper presents a new method in machining of materials using cavitation process. Investigation and optimization of process parameters in. Nontraditional machining method is an advanced method used to overcome the problems of traditional machining methods. 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. Advantages and limitations of abrasive jet machining ajm. A machining process is called nontraditional if its material removal mechanism is basically different than those in. Difference between conventional and nonconventional. 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. Conventional machining uses tools, such as lathes, milling machines, boring machines, drill presses, or. 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. Modular manufacturing is the process of constructing a predesigned and customer approved modular building at the factory.