Machine tool metal cutting types manufacturing 1997economiccensus manufacturing industry series 1997 issued november 1999 ec97m3335b u. In this article we mainly focus on sheet metal cutting operations and other two we will discuss into upcoming articles. Cut through steel and other tough metals as easily as soft pine 2x4s. Shear strength of metal along shear plane is not affected by normal stress. Welding and metal fabrication employs a singular armson, enterprisebased learning method to point out welding experience efficiently and keep school college students extraordinarily motivated. Machining operations is viewed as a system consisting of. Metal circular saw blades saw blades the home depot. Me 3217 metal cutting principles credits and contact hours. 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. 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. The special motor maintains torque at optimum rpms for cutting through metal smoothly and efficiently.
Stage l heat the metal slowly to ensure a uniform temperature. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel. Two prominent methods of converting raw material into a product have been metal forming and machining. Lecture notes tribology mechanical engineering mit. Nptel provides elearning through online web and video courses various streams. Metal cutting notes free pdf download faadooengineers. Nptel, gate, ibps, video lessons, engineering courses, job. Manufacturing engineering and technology, 3rd edition, by s.
Merchants circle diagram is constructed to ease the analysis of cutting forces acting during orthogonal two dimensional cutting of work piece. Stage 2 soak hold the metal at a given temperature for a given time. Mechanics of machining metal cutting cutting temperature. Metal cutting and machine tools iitkgp uploaded a video 2 years ago. When you need an experts advice for metal cutting, this is the place to go. Gear cutting cnc and non traditional machining duration. Cutting edge is 1 straight, 2parallel to the original plane surface on the work piece and 3perpendicular to the direction of cutting. Lecture notes design and manufacturing ii mechanical. 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. Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page. Nptel mechanical engineering manufacturing processes ii. Merchant circle diagram is used to analyze the forces acting in metal cutting.
If heat is used, the temperature in the process is below the melting point of the metals being welded. Lathe machine seminar ppt with pdf report study mafia. Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page 3 of. 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. Mechanics of machining metal cutting dynamometers for measuring cutting forces. Nptel, iit, lectures, courses, video, engineering, online. Metal cutting and machine tools iitkgp 31,285 views. Today i will tell you about types of chips in metal cutting form during machining process. Introduction to metal cutting engineering tutorials. 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 cutting is the process of producing a job by removing a layer of unwanted material from a given workpiece. Metal casting processes indian institute of technology. Cutting operation plastic deformation penetration thickness fracture shearing. Introduction to metal cutting adarsh adeppa department of mechanical engineering, bkit bhalki, karnataka, india corresponding author.
Learning about various metal cutting methods within steel and the rest of the metal working world, cutting and separating metals is a vital process. Lecture series on building materials and construction by dr. Tech project from iit kharagpur 2014 teaching experience. Stresses beyond yield strength of the workpiece material is required. Singlepoint tools one cutting edge turning uses single point tools point is usually rounded to form a nose radius 2. Metal machining college of engineering bhubaneswar. 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. Before discussing on this topic, first you should know about machining process. 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. Read, highlight, and take notes, across web, tablet, and phone. Evolution power tools rage4 714inch tct multipurpose cutting chop saw. Find materials for this course in the pages linked along the left.
Adarsh adeppa received 29 september, 2016 accepted 25 october, 2016 published by research trend, website. The first one is sheet metal cutting, second one is sheet metal bending or forming and the last one is known as deep drawing. Metal cutting complete seminar report ebook free download ppt. In our test, it cut through rebar like a hot knife through butter. There are numerous metal cutting methods out there, starting with basic handheld items like hacksaws, chisels or shears.
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. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Nptel, online courses and certification, learn for free. Metal devil metal cutting circular saws offer a safer, cleaner way to cut metal. Cutting conditions milling cutters plain milling cutters form milling cutters face milling cutters end milling cutters cutting conditions. Building materials and construction building materials and construction. J s campbell, principles of manufacturing materials and processes. Downloadtheory of metal cutting by bhattacharya pdf. Mechanics of machining metal cutting analytical and experimental determination of cutting forces. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses. Building materials and construction nptel online videos. If this is not done there will be starvation of oxygen at the nozzle when the cutting oxygen lever is depressed.
Two 50 minute lectures and one 2 hour lab per week. The analysis of three forces system, which balance each other for cutting to occur. Bhattacharjee, department of civil engineering, iit delhi. Request a call back for precision metal cutting services. Shearing off of the entire sheet for producing a number of pieces of various contours is done by cutting. Cutting and forming thin sheets of metal usually performed as cold working sheet metal 0. Learning about various metal cutting methods wasatch steel. 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. Learn for free, pay a small fee for exam and get a certificate. Metal cutting theory and practice, third edition by david a. Singlepoint tools one dominant cutting edge point is usually rounded to form a nose radius turning uses single point tools 2.
Precision cutting technologies metal cutting liberty lake. Metal beneath the surface undergoes shear deformation. Blanking shearing a closed outline desired part called blank punching sheared part is slag or scrap and remaining stock is a desired part. Cutting tool machining wikipedia, the free encyclopedia. Yang department of mechanical engineering and applied mechanics, the university of michigan, ann arbor, michigan. Advanced machining processes nptel online videos, courses.
After converting nonporous metal into product form by metal forming processes, the mass as well as the volume remains unchanged. 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. Introduction of machining or metal cutting lecture 17. Neiko ridge30065a 14 npt air inlet pneumatic air saber body saw, 6 cfm90 psi0 rpm. Mallett, deputy secretary economics andstatistics administration robertj. Runners and gates are made by cutting the parting surface with a gate cutter. Metal forming involves changing the shape of the material by permanent plastic deformation. Manufacturing processes i nptel online videos, courses. Metal cutting is the most used production processes in the industry. Machining is a process of cutting metal work piece by means of a tool to convert it into desire shape.
The book covers the main areas of interest in metal machining technology namely machining processes, machine tools, metal cutting theory and cutting tools. Manufacturing processes i nptel online videos, courses iit. Perforating, slitting, parting are also cutting operations. Download as ppt, pdf, txt or read online from scribd. Paul,department of mechanical engineering, iit kharagpur. Lecture series on manufacturing processes ii by prof.
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. 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. This lecture describes the mechanism of metals cutting using single point cutting tool. This process is most important since almost all the products get their final shape and size by metal removal, either directly or indirectly. Lecture 3 theory of metal cutting linkedin slideshare. Metal forming processes indian institute of technology. Shear surface is a plane extending upwards from the cutting edge. View notes theoryof metal cutting 120730021018phpapp01 from mechanical 001 at nit trichy. Dec 12, 2016 metal cutting and machine tools iitkgp 33,033 views 40. Butterworthheinemann is another major work, but written more. 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.
Metal forming and machining processes springerlink. Cutting processes remove material from the surface of workpiece by producing chips. It may not be an obvious choice, but fitted with the right blade, a circular saw is a great metal cutting tool. Metal cutting knowledge technical guide from sandvik coromant. From the uniaxial tensile test, one can understand material behavior considerably. Modern developments such as numerical control, computeraided manufacture and nonconventional processes have also been treated.
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. This course would encompass a comprehensive study of metal cutting and. Material removal processes categories of machining cutting involve single or multipoint cutting tools and processes turning, boring, drilling, tapping, milling, sawing, and broaching. 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. It can be used either for a one or a two semester course. Move through metal faster than traditional methods like abrasives wheels.
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. The machining of material is highly dependable on chips. A gate cutter is a piece of sheet metal bent to the desired. You accomplish heat treatment in three major stages. Sheet metal operations cutting and related processes. Mainly sheet metal process can be divided into three types. This groundbreaking new textual content material connects each welding technique to a useful and inventive takehome enterprise, making exercises every.
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