Oct 22, 2008 lecture series on manufacturing processes ii by prof. Mechanical engineering advanced machining processes nptel. There is a need for machine tools and processes which can accurately and easily machine the most difficultto machine materials and. Contents laser beam machining laser type of laser laser application parameters affecting lbm advantage disadvantage references 2 3.
Jain, department of mechanical engineering, iit kanpur. The spdt manufacturing process produces a relatively high percentage of defective parts, which must be discarded. Oct 11, 2020 micromilling is a precision manufacturing process with broad applications across the biomedical, electronics, aerospace, and aeronautical industries owing to its versatility, capability, economy. A flexible manufacturing system fms has four or more processing workstations connected mechanically by a common part handling system and electronically by a distributed computer system. Jagadeesha t, assistant professor, national institute of technology, calicut. Fundamental of modern manufacturing materials, processes and systems, 4ed. These manufacturing process som study notes will help you to get conceptual deeply knowledge about it. Module 3 selection of manufacturing processes nptel figure 3. Manufacturing technology 1 notes pdf mt 1 pdf notes book starts with the topics joining processes,classification of welding process,fusion welding,plastic welding,gas welding technique,oxyacetylene welding,friction welding,friction stir welding,brazing methods. Abrasive flow machining afm, also known as abrasive flow deburring or extrude honing, is an interior surface finishing process characterized by flowing an. Turning, shaping and planning, slab milling, drilling. Instructional objectives i manufacturing process ii. In fusionwelding processes, heat is applied to melt the base metals.
Share your videos with friends, family, and the world. Brujos y guerreros steve jackson pdf machijability shear zone, chip formation, chip thickness measurements, machining mechanics of ductile and brittle materials. This is an introductory level course in manufacturing systems technology and management. Minimum number of castings for profitable use of a permanent mold is dependent on the complexity of its shape. Manufacturing processes, kalpakjian and schmid, pearson 4. His research areas include advanced finishing and nanofinishing processes, magnetorheological finishing mrf process, advancednontraditional machining processes, micromachining processes. The process of metal removal by electro chemical dissolution was known as long back as 1780 ad but it is only over the last couple of decades that this. Modern manufacturing processes are classified according to the type of fundamental machining energy employed.
Singhmelkotecolton cos sin cos sin tan s c t n t c s f f f f f f f. The article also describes the relations between the input variables and process behavior. The common nontraditional machining processes are described in this section. Lecture 1 fundamentals of metal forming there are four basic production processes for producing desired shape of a product. In the electrical beam machining, electrical energy is used to generate the electrons with high energy. Paul,department of mechanical engineering, iit kharagpur. Classification of metal removal processes and machine tools. This is particularly true for manufacturing enterprises, which must understand the dynamic changes that are taking place in business environment and are flexible enough. The planning department processes the data and produces slides that serve as the template for manufacturing the parts. The article also describes the relations between the input variables and process. Toolchip interface decomposition of resultant force. Materials and processes in manufacturing, prentice hall of india, 1997. Machining processes provide desired shape with good accuracy and precision but tend to waste material in the generation of removed portions. Arc welding it is a fusion welding process in which the melting and joining of metals is done by the heat energy generated by the arc between the work and electrode.
Mechanical engineering manufacturing processes i nptel. Introduction to mechanical micro machining course nptel. Machining a material removal process in which a sharp cutting tool is used to mechanically cut away material so that the desired part geometry remains most common application. Axially loaded members, cantilever beam, rings and octagon, dynamometer requirements. Non traditional machining processes s5me complied by.
Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on youtube. Machining awjm through the ieg in amperes, t is time of current flow or ecm, e. The grinding wheel rotates at 3600 rpm, has a diameter d of 150 mm, thickness b of 25 mm, and c 5 grains per mm2. Optimization of the manufacturing process dfa is a tool used to select the most cost effective material and process to be used in the production in the early stages of product. Machining is a metal removal process, which can be accomplished by applying force on raw material by means of a cutting tool. Machining processes provide desired shape with good. Grinding operation is one of the machining processes which consume the highest specific cutting energy with very less material removal rate.
Cutting force and power, surface finish, and tool wear and failure are some dependent variables discussed. Mechanical engineering manufacturing processes ii nptel. Electron beam machining ebm diagram, working, advantages. Basic working principle, configuration, specification. Manufacturing metal mold is much more expensive than manufacturing sand molds or investment casting process mold. How the various surfaces are obtained in machining, advantages, disadvantages. The introduction of abrasives to the fluid jet enhances the machining efficiency and is known as abrasive water jet machining. Develop an understanding of the capabilities and limitations of the unit processes in terms of quality and productivity emphasis on understanding the physical principles underlying these processes apply this knowledge to manufacturing process. Machining parameters, force magnitudes, power consumption, material removal rate, time per pass. Very hard fragile materials difficult to clamp for. Powder metallurgy pdf nptel by the end of this lecture, the student will learn the phq 9 pdf pfizer basic principles of powder metallurgy processes and the critical issues to be. Fundamentals of manufacturing processes course nptel. Pm is therefore becoming increasingly competitive with conventional manufacturing processes like forging, casting, and machining.
Manufacturing process study notes handwritten free pdf. A detail classification f the machining process based on the type of energy used, the mechanism of. For most enterprises, the long term goal is to stay in business, grow and make profits. As the metal enters the mold, the polystyrene foam is vaporized ahead of the advancing liquid. Electron beam machining is a thermal process used for metal removal during the machining process. Advanced manufacturing process for micro system fabrication. Advanced machining processes nptel online videos, courses. Nptel mechanical engineering manufacturing processes ii.
Nptel mechanical engineering advanced machining processes. Lecture series on manufacturing processes ii by prof. 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. The life of the grinding wheel is described as the time period between two successive dressings. In many fusion welding processes, a filler metal is added to the molten pool during welding to facilitate the process and provide strength to the welded joint. When no filler metal is used, that fusion welding operation is referred to as autogenous weld. In the electron beam machining process, a high velocity focused beam of electrons are used to remove the metal from the workpiece. Turning a machining process in which a singlepoint tool remove material from the surface of a rotating work piece. Machining, machining process, tool geometry, mechanics of metal cutting, friction in metal.
Continuous process improvement is a critical part of lean manufacturing. Machining is the manufacturing process by which parts can be produced to the desired dimensions and surface finish from a blank by gradual removal of the. It covers a wide spectrum of manufacturing activities such as machining, sheet metal working, welding, fabricating, scheduling and assembly. Building of machines, structures, or process equipment by cutting, shaping and assembling components made from raw materials. Casting process exploit the fluidity of a metal in liquid state as it takes shape and solidifies in a mold.
Nptel provides elearning through online web and video courses various streams. Reference books fundamental of modern manufacturing. Introduction to machining processes machining handbooks. Part 2 deals with thermal machining processes for example, electric discharge machining, laser beam machining, electron beam machining, etc. This process works on the principle of of faradays laws of electrolysis. Please submit your suggestions and detected errors to jeetender singh kushawaha 9450935651 k. Joining processes permit complex shapes to be constructed from simpler components and have a wide domain of applications. Cutting,mechanism of oblique cutting, practical machining. R s parmar, welding process and technology, khanna publisher, new delhi 2004.
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. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. Groover, fundamentals of modern manufacturing 2e figure 11. A machining process is called nontraditional if its material removal mechanism is basically different than those in the traditional processes, i. These are casting, machining, joining welding, mechanical fastners, epoxy, etc. Machining is a manufacturing process of making useful product by the removal of the material. Dfm is the method of design for ease of manufacturing of the collection of parts that will form the product after assembly. Machining of thin sectioned hard and brittle materials is possible. Generally, process improvements are made regularly with new efficiencies embedded within the process. Module 3 selection of manufacturing processes nptel. Nontraditional machining processes, also called advanced manufacturing processes, are employed where traditional machining processes are not feasible, satisfactory or economical due to special reasons as outlined below. Independent variables include workpiece material, specific machining processes, and tool materials and geometry. Develop an understanding of the capabilities and limitations of the unit processes in terms of quality and productivity emphasis on understanding the physical principles underlying these processes apply this knowledge to manufacturing process selection, part.
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