In water jet machining wjm process, water jets alone without abrasives can be used for cutting. Turbomachinery aerodynamics free aerospace engineering online course on nptel by iit bombay bhaskar roy a m pradeep intro. Analysis precision machining process using finite element method. It is similar to abrasive jet machining ajm in water jet machining, high velocity water jet is allowed to strike a given workpiece. This edition includes expanded coverage of cnc machining and updated illustrations. Precision machining technology section 1 unit 1 introduction to machining. Dec 09, 2017 machining process economics in machining numerical. H8 impact of a jet typical work assignment this experiment asks the student to measure the force on the plates for diff erent.
Manufacturing processes i nptel online videos, courses. Page 1 of 31 nims machining level i preparation guide milling table of contents overview page 2 5 introduction page 2 who wrote the questions page 2 how to prepare for the credentialing exam page 3 areas of knowledge measured by the exam pages 3. Lm35 module 9 nonconventional machining version 2 me. Each week you should save the documents matching the lecture topic listed on the course syllabus and either bring them with you to class on a working laptop or bring a printed copy on which highlights can be made. The two electrodes workpiece and tool is immersed in an electrolyte such as nacl. Unless we control the jet in a proper way there is a possibility of straying of the materials and thereby it may affect on accuracy of the machined part. Watch this video to know the details about the abrasive jet machining project for mechanical engineering.
Abrasive jet machining project for mechanical engineering. Module 9 nonconventional machining version 2 me, iit kharagpur lesson 35 introduction and abrasive. Find out about the type of machinery we have available for a wide range of jobs. Purchasing improved tools is one way to move the machining cost and total cost per piece curves to the right and down. Wjm can be used to cut softer materials like plastic, rubber or wood. Advanced machining processes nptel online videos, courses. Lm37 module 9 non conventional machining version 2 me iit. Electrochemical machining material removal occurs due to electrochemical dissolution at atomic level o in ntm, there may not be a physical tool present.
Also, as i have already indicated the process is not environment friendly, not operator friendly. This colorful and detailed textbook covers all traditional machining methods, as well as newer and nontraditional methods. Version 2 me, iit kharagpur instructional objectives o list four different non conventional machining processes o differentiate between water and abrasive water jet machining o list different wjm and awjm systems o list ten different modules of awjm systems o list four applications of awjm o list three advantages of awjm o list materials that can be processed by awjm o mention functions of. Page 1 of 34 nims machining level i preparation guide turning table of contents overview pages 2 5 introduction page 2 who wrote the questions. Jain, is a comprehensive book for students pursuing mechanical engineering. Inverse jetecm as procedure to realize the edge shape development of a tool system for machining fuel injectors based on the results of the simulations fig. Mechanical engineering ii semester prepared by ravindra gandhi. Analysis precision machining process using finite element method xuesong han school of mechanical engineering, tianjin university, p.
Me course structure sectionsunits topics section a engineering mathematics unit 1 linear algebra unit 2 calculus unit 3 differential equations unit 4 complex analysis unit 5 probability and statistics unit 6 numerical methods section b applied mechanics and design unit 1 engineering mechanics. Overcoming passivation layers with ultrasonic assistance. Rate of delivery of momentum vane 0 hemispherical cup flat plate. Thin jets of high pressure and high velocity have been used to cut materials such wood, coal, textiles, rocks, concrete, asbestos. Lm37 module 9 non conventional machining version 2 me. The technology developed in research laboratories cannot be brought to the shop floor unless its applications are realized by. Part 2 deals with thermal machining processes for example, electric.
In machining like turning, the tool and the job constitute the two dissimilar metals and the cutting zone functions as the hot junction as shown in figure 3. The mechanism of material removal rate is by erosion. Abrasive jet machining ajm water jet cutting wjc and abrasive water jet machining awjm magnetic abrasive finishing maf and its modelling 3. In the process, workpiece is taken as anode and tool is taken as cathode. Water jet machining wjm also called water jet cutting, is a nontraditional machining process in which highvelocity jet of water is used to remove materials from the surface of the workpiece. Kinematics of machines nptel online videos, courses. Laser properties speed is given by material, its thicknes and power of the machine. The introduction of abrasives to the fluid jet enhances the machining efficiency and is known as abrasive water jet machining. It is the material removal process where the material is removed by high velocity stream of airgas or water and abrasive mixture. Given this, nontraditional machining is widely utilized in responding to modern industrial problems. The results should be linear, producing gradients that are unique to the design of the plate. Turbomachinery aerodynamics aero e 415 by nptel on iit. High velocity jet is aimed at a surface under controller condition.
View notes lm35 from mechanical 102 at indian institute of technology, kharagpur. Recommendation of counselor introduces students to identification, care, and use of precision tools and instruments. Modern machining processes presents unconventional machining methods which are gradually commercial acceptance. A new nontraditional machining method using cavitation process. Machining processes have existed for a long time but it was only after the scientific study of these processes which started some fifty years ago that major improvements in tool design, tool materials and machining techniques where brought about. Capability to get the job done regardless of size or tolerance requirements parpas ml120 horizontal 7axis cnc travels x400 x y8 x z59 x b59 rotary table capacity 88,000 lbs. Machining fundamentals is a comprehensive text that provides an introduction to the various machining operations, setups, and procedures. Machining process 08 economics in machining numerical youtube. Duplex milling machine mechanical and automobile ieee project topics, thermal engineering base paper ideas, synopsis, abstract, report, figures, full pdf, working details for mechanical engineering me, diploma, btech, be, mtech and msc college students. In order to cut harder materials like metals or granite, an abrasive material is mixed in the water. Advanced machining processes video course course outline there is a need for machine tools and processes which can. It also includes micronanofinishing processes viz, abrasive flow finishing, magnetic abrasive finishing, etc.
The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. Processes likeabrasive jet machining water jet machininglaser beam machininghot machiningplasma arc machininghave also been included. Nims machining level i preparation guide turning table of contents overview pages 2 5 introduction page 2 who wrote the questions. Cutting of food products by iceparticles in a waterjet. Since machining and tool costs vary with the speed of operation, a minimum total cost occurs at a definite set of conditions for material, tooling and operating speed. This is a cnc machining center programming example or vertical machining centers vmcs programming exercise. Inverse jet electrochemical machining for functional edge shaping of micro bores. It involves the use of high velocity water jet to achieve material removal or machining. Nims machining level i preparation guide milling table of contents overview page 2 5 introduction page 2 who wrote the questions page 2 how to prepare for the credentialing exam page 3 areas of knowledge measured by the exam pages 3, 4 before the exam page 5. This paper presents a new method in machining of materials using cavitation process.
It provides information on updated and advanced machine processes that are used today. Emphasizes the operation of the drill press, lathe, power saw and grinder. Cutting rates for various materials and thicknesses using a co2 laser ipm material thickness 0. Abrasive jet machining ajm is commonly used for cutting, cleaning, drilling and etching operation please find the attached file here. Jun 29, 2017 in water jet machining wjm process, water jets alone without abrasives can be used for cutting. Abrasive jet machining ajmis a nontraditional machining process that can machine material without generating heat and shock. 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. Call us for information on tooling specifications for machining composites. Nptel mechanical engineering manufacturing processes ii. Water jet machining water jet machining wjm is a mechanical energy based nontraditional machining process used to cut and machine soft materials. Sharma, department of mechanical engineering, iit roorkee.
This book is an attempt to consolidate the basic scientific studies in the machining area so that fundamental mechanics and other concepts. Cnc machining center programming example helman cnc. For example in laser jet machining, machining is carried out by laser beam. Pdf inverse jet electrochemical machining for functional. Course file design of machine membersii subject code. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. For example, in a typical study of machining mild steel at 30 mmin at about 750 deg of cutting temperature at toolchip interface, the distribution of total energy developed at the shear zone is as follows energy at chip 60 percent energy to workpiece 30 percent energy to tool 10 percent. Jan 07, 2012 presentation ofabrasive jet machining 1. Water jet machining working principle, advantages and. Basic and easy to understand for beginners level cnc machinists cnc programmers. Part 1 deals with mechanical type advanced machining processes such as ultrasonic machining, water jet machining, abrasive water jet machining. Abrasive jet machining ajm is a nontraditional machining process that can machine material without generating heat and. Advanced machining processes nptel online videos, courses iit video lectures. However in electrochemical machining there is a physical tool that is very much required for machining.
A new nontraditional machining method using cavitation. Machining techniques conventional machining principles apply to composites. Our quality assurance department is a stateoftheart facility with the latest in inspection equipment. Machining process 08 economics in machining numerical. Jain advanced machining processes, authored by vijay k. Water jet and abrasive water jet machining youtube. Introduction and abrasive jet machining notes, mechanical engineeirng, semester notes edurev notes for is made by best teachers who have written some of the best books of. Aerothermodynamics of flow through an axial flow compressor stage. An abrasive is small, hard particle having sharp edges and an irregular shape. H8 impact of a jet detailed specifications tecquipment is committed to a programme of continuous improvement. All aspects of mechanical, electrochemical and thermal processes are comprehensively covered. In the past many qualified technologies have been established for the manufacture of optical, precision and micro parts as well as precision structured surfaces. China 1 introduction machining is the process of removing the materi al in the form of chips by means of wedge shaped tool 1. Riemer laboratory for precision machining lfm, bremen, germany abstract.
Learn vocabulary, terms, and more with flashcards, games, and other study tools. Abrasive jet machining pptpdfseminar faadooengineers. In this field mechanical machining processes, like diamond. Then the average cutting temperature is evaluated from the mv after thorough. Analysis precision machining process using finite element. Lm35 module 9 nonconventional machining version 2 me iit.
Water jet machining wjm is a mechanical energy based nontraditional machining process used to cut and machine soft and nonmetallic materials it involves the use of high velocity water jet to smoothly cut a soft workpiece. Cnc machine ppt free download as powerpoint presentation. Also illustrates the use of cnc gcode g41 cutter radius compensation left. Machining process economics in machining numerical. Machining fundamentals, 9th edition gw online textbooks. Start studying nims certification for precision machining. Similar case happens when ice particles are introduced as in ice jet machining. The need to manufacture high precisio n items and to machine difficulttocut. Water jet machining machining building engineering. Nptel provides elearning through online web and video courses various streams. Machining techniques conventional machining principles. Machining is a broad term to describe removal of material from a workpiece.