Nptel, gate, ibps, video lessons, engineering courses, job. This process is most important since almost all the products get their final shape and size by metal removal, either directly or indirectly. Manufacturing is an important subject that has some of the technical topics to be learned for the gate exam. Perforating, slitting, parting are also cutting operations. The monitoring and control of turning operations in a metalcutting system are examined. Tool wear sensing and metalremoving rate control are considered from a systemstheory viewpoint. S k mondal notes mechanical engineering this is s k mondal mechanical engineering notes for gate ies psus exam preparation in the form of handwritten study material. Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page 6 of fig. Here is the list of important manufacturing notes for gate and mechanical engineering exam. 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. Today i will tell you about types of chips in metal cutting form during machining process. In the metal cutting process, when the compression limit of the metal in front of the cutting tool has been exceeded then it is separated from workpiece and flows. Before discussing on this topic, first you should know about machining process. In this article we mainly focus on sheet metal cutting operations and.
The cutting tool is constrained to move relative to the job in such a way that a layer of metal is removed in the form of a chip. Sheetmetal characteristics elongation the capability of the sheet metal to stretch without necking and failure. Cleaning cleaning involves removal of sand, scale, and excess metal from the casting. Mar 31, 2016 today i will tell you about types of chips in metal cutting form during machining process. We have covered topics wise study notes, important books, and weightage analysis. Metal cutting and machine tools iitkgp 31,285 views.
Introduction of machining or metal cutting lecture 17. Machining is a process of cutting metal work piece by means of a tool to convert it into desire shape. Feb 03, 2018 metal cutting and machine tools iitkgp 31,285 views. Metal casting processes indian institute of technology. Kim 2 cutting processes objectives product quality.
May 07, 2017 mainly sheet metal process can be divided into three types. Yieldpoint elongation lueders bands on lowcarbon steels and almg alloys. Size and weight of the product is not a limitation for the casting process. Lecture 1 introduction lecture 2 introduction and importance of machining lecture 3 principles of machining or metal cutting lecture 4 cutting tools. Cutting metalworking fluids lubricate the workpiecetool metaltometal contact zone preventing tool galling and seizure, which assures good surface finish. Search by nptel course id, course name, lecture title, coordinator. Metal cutting and machine tools iitkgp 31,460 views. Cutting tool engineering magazine cutting tool engineering. A mechanical engineer by profession, vineet has a keen interest in guiding the pursuinggraduated engineers for successful careers and believes in illuminating their path through solving their queries. Description download theory of metal cutting comments. Plastic properties of metals are used during the process of metal forming. It is a combination properties of strength and ductility. Metal forming is the main method of making metal products and semifinished products.
Dec 07, 2018 prebook pen drive and g drive at teacademy. Browse through the issues below and select the digital format you prefer. Shearing off of the entire sheet for producing a number of pieces of various contours is done by cutting. Tool geometry, chip formation, cutting force calculations and measurement, tool wear and other aspects will be given due attention. More than 90% of smelted metal is processed by different methods of metal forming. Machining, steel, industries, building engineering, materials report this link. Tool engineering book pdf mechanical engineering projects. Tool wear sensing and metal removing rate control are considered from a systemstheory viewpoint.
These manufacturing process som study notes will help you to get conceptual deeply knowledge about it. Lubrication and cooling effects provided by cutting fluids coolants result in the following benefits of metalworking. These machining processes are performed on metal cutting machines, more commonly termed as machine tools using various types of cutting tools single or multipoint. Mechanical engineering manufacturing processes ii nptel. Metal cutting notes free pdf download faadooengineers. The machining of material is highly dependable on chips. Nptel provides elearning through online web and video courses various streams. The process in which a thin layer of excess metal c hip is removed by a wedgeshaped singlepoint or multipoint cutting tool with defined geometry.
Usually, the portion that is fractured away is in small sized pieces, called chips. Bonded abrasive loose abrasive turning drilling boring milling planning shaping gear cutting broaching grinding honing coated abrasive lapping polishing. This course would encompass a comprehensive study of metal cutting and machine tools. Theory of metal cutting mechanical engineering mcq. Mainly sheet metal process can be divided into three types. Lecture notes design and manufacturing ii mechanical. Nptel project is licensed under creative commons ccbysa. Basic working principle, configuration, specification. Metal casting processes indian institute of technology guwahati. Cutting metalworking fluids lubricate the workpiecetool metal to metal contact zone preventing tool galling and seizure, which assures good surface finish. Lower and higher pairs, degrees of freedom, various types of mechanisms, their inversions and. Effect of deformation zone geometry parameter on various forming.
Manufacturing technology ii sasurie college of engineering. Vineet vijay vineet is a community manager for gate and various other engineering exams at gradeup. The monitoring and control of turning operations in a metal cutting system are examined. The first one is sheet metal cutting, second one is sheet metal bending or forming and the last one is known as deep drawing. Term applied to all materialremoval processes metal cutting. Introduction to metal cutting engineering tutorials.
Runners and gates are made by cutting the parting surface with a. Heat treatment quenching, hardening, and other thermal modifications p. The tool should be having sufficient toughness withstand the shock and vibration. Find materials for this course in the pages linked along the left. Metal cutting is the process of producing a job by removing a layer of unwanted material from a given workpiece. Theory of machines institute of advanced studies in. Dec 06, 20 merchants circle diagram is constructed to ease the analysis of cutting forces acting during orthogonal two dimensional cutting of work piece. The aim and purpose of this book is to furnish information with respect to the science of tool engineering. Ies swapan kumar mondal sir is ies officer railway, gate topper, ntpc et2003 batch, 14 years teaching experienced, author of hydro power familiarization ntpc ltd. Manufacturing process study notes handwritten free pdf. Manufacturing notes for gate and mechanical engineering exam. Milling is a process performed with a machine in which the cutters rotate to remove the material from the work piece present in the direction of the angle with the tool axis.
The molten metal is transferred to the pouring area where the moulds are filled. Recrystallisation of new grains can happen when the. Kim 3 orthogonal cutting in a lathe rake angle shear angle t o. Latest s k mondal sir notes download me 2020 28 pdf. Therefore, the grains of the metal get elongated along direction normal to applied force, giving raise to anisotropy. He is the mechanical engineering faculty in made easy and is expert in som and production he is expert in every subject, he is known for his jugaaad. Cutting tool engineering magazine, published 12 times a year by cte publications inc. Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page. Unit 1 introduction to tool introduction to tool engineering. Actually, the metal is forced off the work piece by being compressed, shearing off, and sliding along the face of the cutting tool. Most metal cutting is done by high speed steel tools or carbide tools.
Me6402 manufacturing technology ii sce 6 department of mechanical engineering unit i theory of metal cutting definitions machining. Single point cutting tool geometry indian institute of. Merchants circle diagram is constructed to ease the analysis of cutting forces acting during orthogonal two dimensional cutting of work piece. Mechanics of chip formation, single point cutting tool, forces in machining, types of chip, cutting tools nomenclature, orthogonal metal cutting, thermal aspects, cutting tool materials, tool wear, tool life, surface finish, cutting fluids and machinability.
If the tool having sufficient amount of toughness, the fine edge of cutting tool does not break down or chip formation. Machining, machining process, tool geometry, mechanics of metal cutting, friction in metal cutting,mechanism of oblique cutting, practical machining operations, measurement of cutting forces, tool material, tool wear and tool life about instructor. Cutting conditions milling cutters plain milling cutters form milling cutters face milling cutters end milling cutters cutting conditions. Latest sk mondal sir 2021 notes gateesepsuirms free. During recovery process, locked up dislocations get released.
Common cutting processes include sawing, shaping or planing, broaching, drilling, grinding, turning and milling. Mrr, tool wear physics of cutting mechanics force, power tool materials design for manufacturing 2. 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 complete seminar report ebook free download ppt. With the help of the milling machines one can perform many operations and functions starting from small objects to large ones. The numerical code used to identify the metal or alloy may or may not be related to a specification, which is a statement of the technical and commercial requirements that the product must meet. In this article we mainly focus on sheet metal cutting operations and other two we will discuss into upcoming articles. Theory of metal cutting mechanical engineering mcq questions and answers. In metal cutting, the tool does not slide through metal as a jack knife does through wood, not does the tool split the metal as an axe does a log.
Luders bands can be eliminated by coldrolling the thickness by 0. Outline tool geometry, tool angles systems for tool nomenclature iso system orsnrs american standards system asa. Sheet metal forming massachusetts institute of technology. We are here to provides you the best study notes from best coaching like made easy, ace academy etc and lecture notes from best institutions like mit open course, iit nptel, crec tirupati, washington, middle east technical university etc. Classification of metal removal processes and machine tools. Metal cutting cutting processes work by causing fracture of the material that is processed. Pande mechanical engineering department indian institute of technology, bombay. Chemical content identification factors and composition standards p. It includes metal cutting, pressing, and various work holding devices. Aug 22, 2014 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. Burnedon sand and scale are removed to improved the surface appearance of the casting. Within a limited time of 10 hours, this course would elaborate on the theory of metal cutting supplemented with numerical problems.
680 900 864 519 1595 1147 970 1277 1551 382 1141 32 965 210 302 1096 780 223 466 77 316 57 1246 1366 1557 1318 1554 1525 50 1430 119 890 815 834 1272 601 270 965