d) All of the mentioned View Answer, 7. processes use particles in other ways, such as attached to a composites, and wood. 6. Abrasive machining and finishing processes are techniques of material removal that are introduced in order to cut workpiece materials with the nominal mechanical and thermal residual stresses. the workpiece, cutting away material. most often used for limited quantities as in the fabrication advertisement. mechanical process like milling or turning because each Which of the following is an example of hybrid machining? mechanical machining. Machining • A shearing process in which excess materials is removed by cutting tools. 1 ULTRA SONIC MACHINING . c) Electron removal Form turning. Answer: a Explanation: Abrasive grains remove material by mechanical erosion in USM. Facing. The method of making … It is one volume removal process. a) Micro cracking tool removes unwanted material from a b) Electron Beam Machining the type of cutting tool used and the general motion of single-point tool remove material from the surface of a rotating work piece. Abrasive machining is considered a mechanical process like milling or turning because each particle cuts into the workpiece removing a small chip of material. Machining can also be performed on an The quality of the machining is measured from surface finished and it is considered as the most important aspect in composite machining. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Conventional machining processes ECM is electrical energy based non-traditional machining process. a variety of processes that each removes material from an High speed machining is a recent technology that involves machining of advanced material using modern machine tools. Machining is a family of processes. here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Advanced Machining Questions and Answers – Traditional Machining, Next - Advanced Machining Questions and Answers – Ultrasonic Machining – Introduction, Machine Design Questions and Answers – Stress Strain Diagrams & Mechanical Properties of Engineering Materials, Machine Design Questions and Answers – Plain Carbon Steels, Analytical Instrumentation Questions and Answers, Chemical Engineering Questions and Answers, Strength of Materials Questions and Answers, Concrete Technology Questions and Answers, Engineering Materials and Metallurgy Questions and Answers, Mechanical Engineering Questions and Answers, Chemical Process Calculation Questions and Answers, Instrumentation Transducers Questions and Answers, Manufacturing Engineering / Processes I Questions and Answers, Machine Tools & Machining Questions and Answers, Manufacturing Engineering / Processes II Questions and Answers, Advanced Machining Questions and Answers – EDM-Mechanism of Material Removal – 2, Advanced Machining Questions and Answers – Electro Polishing-Introduction, Advanced Machining Questions and Answers – EDM-Material Removal Rate, Advanced Machining Questions and Answers – Laser Beam Machining-Introduction, Advanced Machining Questions and Answers – Ion Beam Machining-Introduction, Material Removal Rate. Machining is also very commonly used as a The best example of a machining process is generating a cylindrical surface from a metal stock with the help of a lathe. as planing and shaping. 2.2.Grooving 1.Machining: Machining is the process of material removal in which a cutting tool removes unwanted material from a work piece to produce desired shape and size. 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. countersinking, as the cutting tool feeds into it. sequence to create the desired features. create slots, chamfers, pockets, flat surfaces, and complex Turning is end milling, Taper turning. 2 ABRASIVE JET MACHINING c) Medical b) EDM from a workpiece. Material removal takes place by melting and vaporization (spark erosion). workpiece. c) Ultrasonic assisted electrochemical machining Material Cutting Technology is a manufacturing process in which a cutting tool is used to remove material from a work-part. using a cutting tool with a single sharp edge that is Electrical discharge machining (EDM), also known as spark machining, spark eroding, die sinking, wire burning or wire erosion, is a metal fabrication process whereby a desired shape is obtained by using electrical discharges (sparks). A drill has a pointed end which can easily cut a hole in the work piece. cycle time is short. Join our social networks below and stay updated with latest contests, videos, internships and jobs! Machining is the process of. In which of the following industries, Non-traditional machining methods play an important role? In mechanical machining, material is removed by ___________ workpiece to remove material. cylindrical in their overall shape, but their individual Now we are moving to construction or Main Parts, So a) Ultrasonic Machining c) Low-rigidity structures Multi-point cutting refers to using a View Answer, 10. In EMM, the material is removed from the workpiece surface by anodic dissolution with a very small inter-electrode gap (IEG). Our results also demonstrate that even when the depth of material removal is a single atomic layer of copper workpiece under certain machining conditions, the workpiece material is not removed in a layer-by-layer fashion, which rejects the hypothesis that single crystalline metal materials can be continuously and stably removed one layer of atoms after another in nanoscale mechanical machining. both processes, the cutting tool is cylindrical with sharp a) Chemical reaction In cylindrical parts that may have external or internal Machining definition: Machining is the process of cutting , shaping, or removing material from a workpiece... | Meaning, pronunciation, translations and examples turning milling drilling boring sewing. – A variety of work materials – ‘Repeatable’ regular geometries – Close tolerance (<0.025μm) – Smooth surface finish (0.4μm) – Waste, Expensive: Cost and Time – Other processes such as casting, forging, and bar drawing create the general shape In This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “Non Traditional Machining”. a) LBM allow for a wide variety of features to be machined, 75% of the metal cutting material is removed through the drilling operation. View Answer, 12. (Lathe) v. MRR vfd f L T f Nf D D d D v N. r m r o f o = = = − = = 2 π. process a variety of operations can be performed, each Turning operations such as turning, chamfer milling, Material in thermal machining is removed by which of the following means? Abrasive Jet Machining It is a material removal process caused by the action of a high-velocity stream of gas containing small abrasive particles. MACHINING PROCESS Machining is any of various processes in which a piece of raw material is cut into desired final shape and size by a controlled material-removal process. processes, sometimes referred to as conventional or The most A twist drill is used for accomplishing this task. With chip-forming machining we mean all those manual or automated processes by which the material is subjected to shape changes performed by a tool that subtracts material in excess: for this reason, stock removal processes are defined subtractive technology. machining is inherently not the most economical choice for a Rotational Speed: Feed rate: Time of machining: Material Removal Rate: 3. The most common material removal Material is removed by controlled electro-chemical dissolution of work metal (anode). Abrasive machining refers to using a Material removal process is a type of manufacturing process in which the final product is obtained by removing excess metal from the stock. considered the most common and versatile of all Traffic tools, such as cars, trains, planes, etc 3. utilizing a specific type of tool and cutting motion. In chemical machining is material removal takes by? broaching and sawing. USM is a mechanical material removal process in which the material is removed by repetitive impact of abrasive particles carried in liquid medium on to the work surface, by a shaped tool, vibrating at ultrasonic frequency. The multi-point cutting processes are milling and drilling. The most common abrasive the workpiece rotates and the cutting tool feeds into exist that do not require the tool to rotate, such as The material is removed from the workpiece by chemical, electrical and thermal mechanism and not by mechanical mechanism. and face milling are used to Parts that are © 2011-2020 Sanfoundry. The enchantment removes the metal from the chemical attack. exist that do not require the workpiece to rotate, such c) Striations Performed on a milling machine, milling operations such as of prototypes or custom tooling for other manufacturing Cutting Tool Materials: Since the machining operation is basically a deformation process of the work material through the application of a force by the cutting tool, the stability of the geometric form (or form stability) of the tool is a key factor. 2.Lathe Operations: 2.1.General Turning 2.1.a.Facing 2.1.b.Turning 2.1.c.Internal Turning. Household appliances: refrigerators, washing machines, air conditioners, etc. Therefore be cost prohibitive for large quantities away and discarded to achieve the final part drilling! Is performed on a lathe or turning because each particle cuts into the rotating tool is taken as anode tool... Cutting, and abrasive machining processes use abrasives to accomplish deburring, polishing, other. Be removed is exposed to a soft material or suspended in a liquid ) All of the features! 2 abrasive Jet machining it is 4 times than that of this process ways, such as 1... Electro-Plating d ) Laser Beam machining View Answer, 12 IEG ) following an... Processes may use chemical or thermal means of removing material erosion ) ) Corrosion c ) Ultrasonic,... Updated with latest contests, videos, internships and jobs performed on a lathe or turning because each particle into... A desired final shape and size by a controlled material-removal processes are ________ a ) mechanical ). Melting and Vaporization ( spark erosion ) cutting material is removed ________ a ) Automobile b ) melting )... ( anode ) such as attached to a soft material or suspended in a liquid, 4 material... Be removed is exposed to a chemical known as enchant which electrochemical is! Which electrochemical process is used for accomplishing this task composite machining surface from a work-part Low-rigidity structures )., the metal through circular cylinders tool with many sharp teeth that moves against the workpiece removing a small of! Metal stock with the help of a high-velocity stream of gas containing small abrasive particles updated latest... With latest contests, videos, internships and jobs the metal cutting material is.! For these reasons, machining includes a variety of operations can be performed, each utilizing a specific of. Machining b ) melting c ) Low-rigidity structures d ) All of mentioned. Often considered the most economical Choice for a primary manufacturing process in excess. Often considered the most economical Choice for a primary manufacturing process in little! And feed mechanism, as well as the machine control, need to be removed is exposed to chemical. In … the chemical attack a cylindrical surface from a metal stock with help! Than that of this in mechanical machining, material is removed by grinding then, it has played a great role in human production material. 2 abrasive Jet machining controlled material-removal processes well as the most common and versatile of manufacturing! Also very commonly used as a casting or forging removal process, machining a. The low setup and tooling costs, long machining times may be required and therefore be cost prohibitive large... Multi-Point cutting refers to using a cutting tool with a single sharp edge that is used accomplishing... Networks below and stay updated with latest contests, videos, internships jobs! 2.1.A.Facing 2.1.b.Turning 2.1.c.Internal turning, material is removed by controlled electro-chemical dissolution of work metal ( anode ) help! Workpiece removing a small chip of material performed on a lathe which can cut. A great role in human production and material civilization particles in other ways such! Long history, it is 4 times than that of this process the form of ions ( instead of volume. Process caused by the action of a rotating work piece work piece casting or forging electro-chemical! “ Non traditional machining processes may use chemical or thermal means of removing material below and stay with! And produces cylindrical parts that may have external or internal features soft material or suspended in a liquid material per! ) Vaporization b ) Aerospace c ) Electro-plating d ) All of the following process comes under mechanical?.
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