Mar 11, 2016 out of all the unconventional machining methods, edm is the one which gives highest mrr, melting and evaporation is the mechanism for chip formation, the mechanical properties of work piece material will not affect the material removal rate mrr. Nptel video course mechanical engineering advanced finite elements analysis subject coordinator dr. Jun 10, 2017 electro chemical machining technique removes material by atomic level dissolution of the same by electro chemical action. Edm, primarily, exists commercially in the form of diesinking machines and wirecutting machines wire edm. Electron beam machining mechanical engineering blog. Wave springs pack more force into less space machine design. Nptel electrical engineering video lecture online study. Mechanical engineering manufacturing processes ii nptel. Venkataramaiah 3 1,2,3 deprtment of mechanical engineering, sri venkateswara university college of engineering.
The mission of nptel is to enhance the quality of engineering education in the country by. Shantanu bhattacharya coordinating institute iit kanpur subtitles available unavailable lab session lab session lab session lab. Mechanical engineering video lectures from nptel, iit, mit. It is a nontraditional machining process in which no physical tool is used. Manufacturing processes i nptel online videos, courses.
In electric discharge machining process an arc is produced when two currentcarrying wires are shortcircuited. Sharma, department of mechanical engineering, iit roorkee. Lower and higher pairs, degrees of freedom, various types of mechanisms, their inversions and. In order to meet these challenges, a number of newer material. Non traditional manufacturing processes an overview. Nptel provides elearning through online web and video courses in engineering, science and humanities streams. Prakash in partial fulfillment for the award of the degree of doctor of philosophy in mechanical engineering. Mechanical micro machining is capable to machine metals, polymers, and ceramics in very less time as compared to lithographic processes and other micro machining processes such as edm, ecm, lbm, etc. Study on machining response in wire edm of inconel 625. Department of mechanical engineering, mace klm p a g e wire edm wire edm machines imported from swiss, uses wires of diameter ranging from 0. The thermal energy is applied to a very small portion of the work surface, causing that portion to be removed by fusion andor vaporization of the material. This course on advanced machining processes is also known as unconventional machining processes, modern machining processes, and new technology.
Mechanical properties represents values determined by physically testing the product. Wire edm edm, primarily, exists commercially in the form of diesinking machines and wire cutting machines wire edm. In this process, a slowly moving wire travels along a prescribed path and removes material from the workpiece. Mgr educational and research institute deemed university n. Various grades of steels, copper and carbides were also machined in these machines. The mission of nptel is to enhance the quality of engineering education in the country by providing free online courseware. During this machining process, a small portion of metals is also eroded away. Diesinker edm and wire cut electric discharge machining. Usm offers a solution to the expanding need for machining. Advanced machining processes video course mechanical. To prepare the edm specimens, the base specimens were machined by edm to remove the unnecessary material at various machining conditions rough, medium and soft according to pulse current a and pulseon duration time.
Oct 23, 2008 lecture series on manufacturing processes ii by prof. The most significant control parameters international journal of mechanical engineering and robotics research vol. It currently offers both undergraduate and postgraduate degrees. 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. Nptel mechanical engineering video lecture online study. Gaitonde, department of mechanical engineering, iit bombay. Wire cut edm, also known as wire electrical discharge machining, or wire edm is a method of cutting or shaping conductive materials with a thin electrode that follows a precisely programmed path. As a result, it has found strong base in a wide array of practical applications. Diesinker edm and wire cut electric discharge machining wedm. Numerical control also computer numerical control, and commonly called cnc is the automated control of machining tools such as drills, boring tools, lathes and 3d printers by means of a computer. Progressive tool design and analysis for 49 lever 5 stage tools.
As draw ratio is increased the draw pressure increases. Free download engineering ebooks pdf ppt lecture notes. Electrical engineering video lectures tutorials lecture 16 power ports lecture 24 dc machines part 2 lecture 15 power factor lecture 25 dc generators lecture 22 the practical transformer part 3 lecture 18 transformer basic part 2 lecture 27 dc motors lecture 26 dc generators 2 lecture 37 induction motor 2 lecture 20 the. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses.
Advanced machining processes online course video lectures by. Advanced machining processes video course course outline there is a need for machine tools and processes which can accurately and easily machine the most difficulttomachine materials and workpieces with intricate and accurate shapes. Wire edm uses electrothermal mechanisms to cut electrically conductive. Nptel video lecture topics for mechanical engineering new no. All forms of cnc equipment have two or more directions of motion, called axes. Prakash in partial fulfillment for the award of the degree of doctor of philosophy in mechanical engineering dr. The edm machines remove the metal by creating the sparks that burn the metal. This is a manufacturing operation in which we used to make. Advanced machining processes video course course outline there is a need for machine tools and processes which can accurately and easily machine the most difficultto. Theory of machines institute of advanced studies in.
These axes can be precisely and automatically positioned along their lengths of. Could find application in various machine engineering fields, etc. Pulla reddy engineering college, autonomous, kurnool abstract. This is a manufacturing operation in which we used to make desired shapes by using an electrical spark. The electrode is a thin wire, with diameters that typically range from. Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page 7 of shear stress exceeds shear yield strength of material, the two surfaces adhere to each. Nptel electrical engineering video lecture online study material. The balance of steel chemistry would consist of iron and trace elements. Edm process lecture 20 diesinker edm and wire cut electric discharge. Erosion of the work material by a high velocity stream of abrasives or fluids or both thermal. Effect of electrode material on electrical discharge. Thus the material removal rate mrr is independent on the mechanical or physical properties of the work material. Edm, primarily, exists commercially in the form of diesinking machines and wire cutting machines wire edm.
Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page 3 of. Known by many other names, including spark machining, arc machining and inaccurately. Nptel mechanical engineering video lecture online study material. 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. A study on the machining characteristic in wire edm process. A study on the machining characteristic in wire edm process a thesis submitted by c. Rather than applying completely mechanical devices to cause motion as is required on most conventional machine tools, cnc machines allow motion control in a revolutionary manner. Electrical engineering video lectures from nptel, iit, mit. There are two types of edm with the cnc automation vertical edm and. Electrical engineering video lectures tutorials lecture 16 power ports lecture 24 dc machines part 2 lecture 15 power factor lecture 25 dc generators lecture 22 the practical transformer part 3. Usm is mechanical material removal process or an abrasive process used to erode holes or cavities on hard or brittle work piece by using shaped tools, high frequency mechanical motion and an abrasive slurry. Introduction to abrasive machining and finishing processes video. A wireedm or electricaldischarge wire cutting is basically a variation of an edm process in which a slowly moving wire travels along a prescribed path, cutting the work piece, by discharge.
Paul,department of mechanical engineering, iit kharagpur. Smart material, adaptive structures and intelligent mechanical systems iitk. Electrochemical machining ecm is a nontraditional machining process uses the principle of faraday to remove metal from the workpiece. Mechanical engineering n p t e l national programme on. To prepare the edm specimens, the base specimens were machined by edm to remove the unnecessary material at various machining conditions rough, medium and soft. From the uniaxial tensile test, one can understand material. Electron beam machining is same as laser beam machining process in which except laser, high speed electron beam. Flat wire wave springs offer significant advantages over traditional spring designs such as coils and discs. Nptel video course mechanical engineering advanced finite elements analysis. Nptel video lecture topic list created by linuxpert systems, chennai nptel video course mechanical engineering advanced manufacturing process for micro sytem fabrication subject coordinator dr. The department of mechanical engineering is one of the oldest departments at iit madras. It deals with the latest machining processes named as advanced machining processes.
Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page 4 of 8 the draw pressure is dependent on draw ratio r. A wire edm or electricaldischarge wire cutting is basically a variation of an edm process in which a slowly moving wire travels along a prescribed path, cutting the work piece, by discharge. Wire edm edm, primarily, exists commercially in the form of diesinking machines and wirecutting machines wire edm. It hosts a diverse and talented mix of students, technical staff and faculty members. Aug 14, 2016 department of mechanical engineering, mace klm p a g e wire edm wire edm machines imported from swiss, uses wires of diameter ranging from 0. Lecture 20 diesinker edm and wire cut electric discharge machining wedm. Lecture series on manufacturing processes ii by prof. Electrical discharge machining edm has long been the answer for high accuracy, demanding machining applications where conventional metal removal is difficult or impossible. Study on machining response in wire edm of inconel 625 g. Elongation elongation is the increase in gage length or pull when steel is tensile tested. Progressive tool design and analysis for 49 lever 5 stage tools h. Mechanical engineering indian institute of technology madras.