You accomplish heat treatment in three major stages. Move through metal faster than traditional methods like abrasives wheels. Mallett, deputy secretary economics andstatistics administration robertj. A gate cutter is a piece of sheet metal bent to the desired. Manufacturing processes i nptel online videos, courses. Download as ppt, pdf, txt or read online from scribd. Stresses beyond yield strength of the workpiece material is required. Learning about various metal cutting methods wasatch steel. From the uniaxial tensile test, one can understand material behavior considerably. Merchants circle diagram is constructed to ease the analysis of cutting forces acting during orthogonal two dimensional cutting of work piece. Machining is a process of cutting metal work piece by means of a tool to convert it into desire shape. Tech project from iit kharagpur 2014 teaching experience.
View notes theoryof metal cutting 120730021018phpapp01 from mechanical 001 at nit trichy. Cutting processes remove material from the surface of workpiece by producing chips. The special motor maintains torque at optimum rpms for cutting through metal smoothly and efficiently. Butterworthheinemann is another major work, but written more.
Multiple cutting edge tools more than one cutting edge motion relative to work usually achieved by rotating drilling and milling use rotating multiple cutting edge tools. This course would encompass a comprehensive study of metal cutting and. Advanced machining processes nptel online videos, courses. Lecture 3 theory of metal cutting linkedin slideshare. Metal casting processes indian institute of technology. After converting nonporous metal into product form by metal forming processes, the mass as well as the volume remains unchanged. In our test, it cut through rebar like a hot knife through butter. Lower knife item 1 and upper knife item 2 have to be tempered in order to harden them and besides that, these two items have to be made out of the quality steel with high hardness. Contentcommon features of machining processes, geometry of single point tool and tool signature, concept of speed, feed and depth of cut applicable to various machining processes. J s campbell, principles of manufacturing materials and processes. Singlepoint tools one dominant cutting edge point is usually rounded to form a nose radius turning uses single point tools 2. Metal machining college of engineering bhubaneswar. Ernst and merchant do this scientific analysis for the first time in 1941 and gives the following relation in 1944 it is convenient to determine various force and angles.
The cutting instrument is feed into the workpiece which rotates about its own axis and with its help we can make the workpiece in a required shape that we need or want. Do you need help with calculating starting values, figure out what causes and solves poor tool life or do you need tips on how to optimize your machining processes. Lecture series on building materials and construction by dr. Introduction to metal cutting engineering tutorials. Request a call back for precision metal cutting services. This process is most important since almost all the products get their final shape and size by metal removal, either directly or indirectly. Lathe machine seminar ppt with pdf report study mafia. Stage l heat the metal slowly to ensure a uniform temperature.
If this is not done there will be starvation of oxygen at the nozzle when the cutting oxygen lever is depressed. Building materials and construction nptel online videos. The first one is sheet metal cutting, second one is sheet metal bending or forming and the last one is known as deep drawing. Neiko ridge30065a 14 npt air inlet pneumatic air saber body saw, 6 cfm90 psi0 rpm. Learning about various metal cutting methods within steel and the rest of the metal working world, cutting and separating metals is a vital process. Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page 3 of. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel. Machine tool metal cutting types manufacturing 1997economiccensus manufacturing industry series 1997 issued november 1999 ec97m3335b u. Paul,department of mechanical engineering, iit kharagpur. If heat is used, the temperature in the process is below the melting point of the metals being welded. To understand the concept and basic mechanics of metal cutting, working of standard machine tools such as lathe, shaping and allied machines, milling, drilling and allied machines, grinding and. Nptel, online courses and certification, learn for free. Metal cutting knowledge technical guide from sandvik coromant.
Find materials for this course in the pages linked along the left. Modern developments such as numerical control, computeraided manufacture and nonconventional processes have also been treated. Cutting and forming thin sheets of metal usually performed as cold working sheet metal 0. Metal cutting theory and practice, third edition by david a. Cutting tool machining wikipedia, the free encyclopedia. Two prominent methods of converting raw material into a product have been metal forming and machining. In this article we mainly focus on sheet metal cutting operations and other two we will discuss into upcoming articles. 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. Cutting operation plastic deformation penetration thickness fracture shearing. It can be used either for a one or a two semester course. Manufacturing processes i nptel online videos, courses iit. Metal cutting complete seminar report ebook free download ppt.
Metal forming involves changing the shape of the material by permanent plastic deformation. Evolution power tools rage4 714inch tct multipurpose cutting chop saw. Welding and metal fabrication employs a singular armson, enterprisebased learning method to point out welding experience efficiently and keep school college students extraordinarily motivated. Read, highlight, and take notes, across web, tablet, and phone. Clarendon press is closest in spirit to the mechanical engineering focus of the present work, but there have been many developments since that was first published. Mechanics of machining metal cutting cutting temperature. Merchant circle diagram is used to analyze the forces acting in metal cutting. Metal cutting is the most used production processes in the industry. Gear cutting cnc and non traditional machining duration. Runners and gates are made by cutting the parting surface with a gate cutter. The machining of material is highly dependable on chips. Metal circular saw blades saw blades the home depot. Shear strength of metal along shear plane is not affected by normal stress. It is essential when using a combined outfit type 3 or lw to open the oxygen valve or the shank fully.
Manufacturing technology theory of metal cutting metal cutting or machining is the process of producing a work piece by removing unwanted material from a block of metal, in the form of chips. Metal forming processes indian institute of technology. Bhattacharjee, department of civil engineering, iit delhi. Machining operations is viewed as a system consisting of.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Metal beneath the surface undergoes shear deformation. Building materials and construction building materials and construction. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses. Introduction of machining or metal cutting lecture 17. The book covers the main areas of interest in metal machining technology namely machining processes, machine tools, metal cutting theory and cutting tools. Adarsh adeppa received 29 september, 2016 accepted 25 october, 2016 published by research trend, website. Sheet metal operations cutting and related processes. Nptel, iit, lectures, courses, video, engineering, online. Shear surface is a plane extending upwards from the cutting edge. Important casting terms nptel course on manufacturing processes i, pradeep kumar et al. Me6402 manufacturing technology ii sce 9 department of mechanical engineering fine feeds and high speeds continuous chips with a built up edge still look like a long ribbon, but the surface is no longer smooth and shining. Spur and helical gear cuttingt at iit kharagpur and nptel, mhrd julyaug 2017 1 terms nontraditional manufacturing processesp at department of mechanical engineering, iit kharagpur julynov 2017 1 terms.
Aug 22, 2014 manufacturing technology tool signature for single point cutting tool end cutting edge angle angle between end cutting edge and the line normal to the tool shank side relief angle angle between the portion of the side flank immediately below the side cutting edge and a line perpendicular to the base of the tool, measured at right angle to the. Lecture series on manufacturing processes ii by prof. Metal cutting and machine tools iitkgp 31,285 views. Cutting conditions milling cutters plain milling cutters form milling cutters face milling cutters end milling cutters cutting conditions. Two 50 minute lectures and one 2 hour lab per week. Optimization of cutting conditions for sustainable machining of sintered powder metal steels using pcbn and carbide tools powder metals are becoming a popular choice in the automotive and other manufacturing industries because of their ability to meet wide ranging product functional requirements without compromising the performance of the product. Stage 2 soak hold the metal at a given temperature for a given time. Metal cutting notes free pdf download faadooengineers. There are numerous metal cutting methods out there, starting with basic handheld items like hacksaws, chisels or shears. Learn for free, pay a small fee for exam and get a certificate. The analysis of three forces system, which balance each other for cutting to occur.
Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Cutting edge is 1 straight, 2parallel to the original plane surface on the work piece and 3perpendicular to the direction of cutting. Shearing off of the entire sheet for producing a number of pieces of various contours is done by cutting. Precision cutting technologies metal cutting liberty lake.
Introduction to metal cutting adarsh adeppa department of mechanical engineering, bkit bhalki, karnataka, india corresponding author. Mechanics of machining metal cutting dynamometers for measuring cutting forces. Nptel, gate, ibps, video lessons, engineering courses, job. Singlepoint tools one cutting edge turning uses single point tools point is usually rounded to form a nose radius 2. Cut through steel and other tough metals as easily as soft pine 2x4s.
This groundbreaking new textual content material connects each welding technique to a useful and inventive takehome enterprise, making exercises every. Metal cutting is the process of producing a job by removing a layer of unwanted material from a given workpiece. Blanking shearing a closed outline desired part called blank punching sheared part is slag or scrap and remaining stock is a desired part. Yang department of mechanical engineering and applied mechanics, the university of michigan, ann arbor, michigan. Dec 12, 2016 metal cutting and machine tools iitkgp 33,033 views 40. Lecture notes tribology mechanical engineering mit. Metal devil metal cutting circular saws offer a safer, cleaner way to cut metal. Me 3217 metal cutting principles credits and contact hours. Manufacturing engineering and technology, 3rd edition, by s. The lathe is one of the most vital device tools in the industry of metal working and a lathe functions on the principle of a rotating workpiece and a fixed cutting instrument. Mainly sheet metal process can be divided into three types. This lecture describes the mechanism of metals cutting using single point cutting tool. Multiple cutting edge tools more than one cutting edge motion relative to work achieved by rotating drilling and milling use rotating multiple cutting edge tools. When you need an experts advice for metal cutting, this is the place to go.
Sheet metal cutter page 1 of 17 sheet metal cutter maximal thickness of the steel sheets that you can cut with this tool is 2mm. Perforating, slitting, parting are also cutting operations. It may not be an obvious choice, but fitted with the right blade, a circular saw is a great metal cutting tool. Mechanics of machining metal cutting analytical and experimental determination of cutting forces. Metal cutting and machine tools iitkgp uploaded a video 2 years ago. Downloadtheory of metal cutting by bhattacharya pdf. Lecture notes design and manufacturing ii mechanical. Today i will tell you about types of chips in metal cutting form during machining process.