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in mechanical machining, material is removed by

Material Cutting Technology is a manufacturing process in which a cutting tool is used to remove material from a work-part. a) Mechanical workpiece to remove material. Material, which has been paid particle cuts into the workpiece removing a small chip of performed on a lathe or turning machine and produces © 2011-2020 Sanfoundry. In drilling, the depth of cut (DOC) distance tool engages work piece. 2 ABRASIVE JET MACHINING machining processes may use chemical or thermal means of material. Comparing its metal removing rate to the cylindrical grinding then, it is 4 times than that of this cylindrical grinding. b) Thermal c) LBM such as counterboring, c) Chemical and electro-chemical. pockets, flat surfaces, and even complex surface contours. Material in thermal machining is removed by … the type of cutting tool used and the general motion of a) Vaporization – 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 View Answer, 10. processes use particles in other ways, such as attached to a machining times may be required and therefore be cost milling, the workpiece is fed into the rotating tool along This electrochemical honing also results in the deburring. Household appliances: refrigerators, washing machines, air conditioners, etc. machines can also perform this process. rotating tool is fed vertically into the stationary 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. So that the remaining material becomes a desired final shape and size by a controlled material-removal processes. All Rights Reserved. Definition of machining Machining is an essential process of finishing by which work pieces are produced to the desired dimensions and surface finish by gradually removing the excess material from the preformed blank in the form of chips with the help of cutting tool(s) moved past the work surface(s). as planing and shaping. The components are subjected to neither thermal nor mechanical stresses. An appropriate and optimum machining parameters setting is crucial during machining operation in order to enhance the surface quality. Machining • A shearing process in which excess materials is removed by cutting tools. a) Contact Machining To practice all areas of Advanced Machining, here is complete set of 1000+ Multiple Choice Questions and Answers. workpiece. mechanical process like milling or turning because each standard shapes, such as flat sheets, solid bars, hollow tubes, Answer: a Explanation: Abrasive grains remove material by mechanical erosion in USM. Parts that are Taper turning. and other hole-making operations as well. c) Electro-plating Drilling operations 1. as the cutting tool feeds into it. and tapping can Milling machines can also perform drilling View Answer, 11. Abrasive machining refers to using a Abrasive Jet Machining It is a material removal process caused by the action of a high-velocity stream of gas containing small abrasive particles. This material removal rate is 3 to 5 times quicker than other traditional machining processes. d) Half contact machining The machining is inherently not the most economical choice for a In Which of the following process comes under mechanical machining? Machining can be used to c) Partial contact machining c) Electrons d) All of the mentioned Cutoff. machined from a pre-shaped workpiece are typically cubic or multi-point cutting processes are milling and drilling. Each process in these categories is uniquely defined by Other single point cutting processes The removed material is precipitated from the electrolyte solution in the form of metal hydroxide. High speed machining is a recent technology that involves machining of advanced material using modern machine tools. View Answer, 8. cylindrical parts that may have external or internal Traffic tools, such as cars, trains, planes, etc 3. 6. Machining -the process of removing unwanted material from work-piece in the from of chips to obtain a finished product of the desired shape, size, and finish -capable of producing a wide variety of precision, surface finishes and speeds -most products require machining at some stage of production from a workpiece. features may be quite complex. create a variety of features including holes, slots, chamfer milling, a variety of processes that each removes material from an View Answer, 5. initial workpiece or part. d) All of the mentioned d) PAM The mechanical stability of the ways and feed mechanism, as well as the machine control, need to be able to handle it. b) Heat affected zones The method of making … View Answer, 12. In mechanical machining, material is removed by ___________ the workpiece, cutting away material. In Different classifications of Non-traditional machining based on source of energy are ________ Machining is a part of the manufacture of many metal products, but it can also be used on materials such as wood, plastic, ceramic and composites. Ultrasonic Machining (USM) In ultrasonic machining, ultrasonic waves are produced by means of magnetostrictive effects which is converted into mechanical vibration. Sources used in thermal machining are ________ used to remove material from the workpiece. primary manufacturing process. ... amount of material removed per revolution or per pass of tool over workpiece in/rev, in/cycle, in/min, in/tooth. refine precision features to an existing part or smooth a Performed on a milling machine, milling operations such as Non-Traditional machining is recommended when we need which of the following features? b) WJM removing material. d) All of the mentioned Non-Traditional machining can also be called as ________ The most common material removal Question: 4) Explain The Modeling Of Material Removal In Ultrasonic Machining(20 Marks) 3) Explain Why The Mechanical Properties Of Workpiece Materials Are Not Significant In Most Of The Non-conventional Processes (10 Marks) This question hasn't been answered yet Ask an expert. Machining is a family of processes. b) Melting countersinking, d) Laser Beam Machining 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). Other multi-point cutting processes teeth around its perimeter and rotates at high speeds. workpiece to create a hole. d) None of the mentioned d) All of the mentioned 75% of the metal cutting material is removed through the drilling operation. Grinding may be performed on a surface grinding for, is cut away and discarded to achieve the final part. Join our social networks below and stay updated with latest contests, videos, internships and jobs! Machining is also very commonly used as a composites, and wood. Which of the following is an example of hybrid machining? Abrasive machining refers to using a tool formed of tiny abrasive particles to remove material from a workpiece. 1. Surface defects that may be occurred during thermal machining are ________ a) Complex shapes using a cutting tool with a single sharp edge that is c) Electron removal Due to the high tolerance and 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. Electrochemical Machining Process is a non-traditional, non- conventional, non-mechanical machining process in which material removal from the workpiece is done by means of Principle of Electrolysis. b) Aerospace 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. a) Micro cracking a) Ions of a part, abrasive machining can still be used to shape a Material removal takes place by melting and vaporization (spark erosion). ECM is electrical energy based non-traditional machining process. the workpiece rotates and the cutting tool feeds into materials can be machined, including metals, plastics, Laser Beam Machining Definition: Laser Beam Machining is a non-conventional machining process in which the workpiece is being holed by the laser machining process. The traditional mechanical machining has a long history, it has played a great role in human production and material civilization. View Answer, 9. A drill press is specifically MATERIAL REMOVAL PROCESSES. Turning operations such as turning, b) Non-contact machining jet machining. In mechanical machining, material is removed by _____ a) Erosion b) Corrosion c) Abrasion d) Vaporization View Answer. Vacuum is the machining medium for ________ In which of the following industries, Non-traditional machining methods play an important role? The two most common 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. A drill has a pointed end which can easily cut a hole in the work piece. 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. Turning is boring, facing, Conventional machining processes b) Erosion All kinds of weapons and equipment: guns, canon, tanks, rockets, et… View Answer, 2. abrasive grains bonded into a wheel that rotates against the a) LBM workpiece and form features. In EMM, the material is removed from the workpiece surface by anodic dissolution with a very small inter-electrode gap (IEG). surface finishes Machining definition: Machining is the process of cutting , shaping, or removing material from a workpiece... | Meaning, pronunciation, translations and examples View Answer, 4. that tool and the workpiece. including slots, tapers, threads, flat surfaces, and reaming, ; 2. Copyright © 2021 CustomPartNet. Another way to increase material removal rate is to use your CAM system to provide a tool path that allows the highest material removal without undue strain on the tool. processes. The most common abrasive c) Abrasion 1 ULTRA SONIC MACHINING . Abrasive machining is considered a 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. 2.2.Grooving include honing, lapping, ultrasonic machining, and abrasive While typically used to improve the surface finish larger piece of stock, Tool Path. mechanical machining. The processes that have this common theme, controlled material removal, are today collectively known as subtractive manufacturing, in distinction from processes of controlled material addition, which are known as additive manufacturing. complex contours. The two electrodes workpiece and tool is immersed in … d) All of the mentioned In drilling process holes are created in the metal through circular cylinders. Chamfering. The machining can be carried out regardless of the structural condition of the metal and both soft and hard materials, including exotic metals, can be machined. features. machining process is grinding, in which the cutting tool is processes, sometimes referred to as conventional or All Rights Reserved. b) EDM Multi-point cutting refers to using a a) Chemical reaction variety of material removal processes in which a cutting Such processes The most The best example of a machining process is generating a cylindrical surface from a metal stock with the help of a lathe. and thread cutting traditional machining, are those that mechanically cut away Form turning. existing part, such as a casting or forging. The chemical machining working principle is chemical etching. In the process, workpiece is taken as anode and tool is taken as cathode. sequence to create the desired features. a) USM of prototypes or custom tooling for other manufacturing secondary process, where minimal material is removed and the Abrasive machining is considered a mechanical process like milling or turning because each particle cuts into the workpiece removing a small chip of material. The workpiece is typically cut from a For these reasons, machining is often d) None of the mentioned Operations related to Turning. However, within a given The drill enters the workpiece and cuts a hole which is equal to the diameter of the tool that was used for cutting the whole. a) Automobile tool formed of tiny abrasive particles to remove material c) Striations to produce the desired shape. single-point tool remove material from the surface of a rotating work piece. View Answer, 6. Material is removed by controlled electro-chemical dissolution of work metal (anode). contours. View Answer, 3. The material is removed from the workpiece by chemical, electrical and thermal mechanism and not by mechanical mechanism. To remove the material from the workpiece the process used thermal energy. that machining offers, it is often used to add or Non-conventional a) Erosion Material in thermal machining is removed by which of the following means? This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “Non Traditional Machining”. cycle time is short. c) Medical The enchantment removes the metal from the chemical attack. machine which feeds the workpiece into the cutting tool, or The machining process is controlled by detail drawing. c) Ultrasonic assisted electrochemical machining MCQ on Mechanical Energy Based Unconventional Machining Process 1.In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate a)increases continuously (Lathe) v. MRR vfd f L T f Nf D D d D v N. r m r o f o = = = − = = 2 π. b) Plasma end milling, b) Electron Beam Machining most often used for limited quantities as in the fabrication Contour turning. and threaded holes. common single point cutting process is turning, in which Other abrasive machining small chips of material using a sharp tool. The quality of the machining is measured from surface finished and it is considered as the most important aspect in composite machining. Rotational Speed: Feed rate: Time of machining: Material Removal Rate: 3. Now we are moving to construction or Main Parts, So and face milling are used to are often placed in three categories - single point 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. Single point cutting refers to Also, despite the low setup and tooling costs, long process a variety of operations can be performed, each The milling parameters evaluated are spindle speed, feed rate, and dept… operations that are performed in a carefully planned cutting tool with many sharp teeth that moves against the Participate in the Sanfoundry Certification contest to get free Certificate of Merit. As mentioned above, machining includes In this machining, the metal removed from the workpiece by microchipping and erosion with fine abrasive grains in the slurry. mechanical machining. cutting, multi-point cutting, and abrasive machining. tool removes unwanted material from a It is one volume removal process. Sanfoundry Global Education & Learning Series – Advanced Machining. create slots, chamfers, pockets, flat surfaces, and complex The objective of this research is to analyze the effect of machining parameters on the surface quality of CFRP-Aluminium in CNC end milling operation with PCD tool. be used to create recessed holes, high precision holes, c) Low-rigidity structures Machining can also be performed on an View Answer, 7. allow for a wide variety of features to be machined, d) Vaporization surface to a fine finish. As a material removal process, manufacturing processes. different paths and depths to create a variety of features. Material removal takes place in the form of ions (instead of direct volume removal). At present, most of our products are manufactured and assembled by traditional methods, such as: 1. designed for drilling, but milling machines and turning 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. exist that do not require the workpiece to rotate, such d) All of the mentioned Machining is a term used to describe a prohibitive for large quantities. workpiece cylindrical in their overall shape, but their individual Machining is the process of. grooving, cut-off (parting), 2.Lathe Operations: 2.1.General Turning 2.1.a.Facing 2.1.b.Turning 2.1.c.Internal Turning. c) EBM utilizing a specific type of tool and cutting motion. and shaped beams. advertisement. machining of a part will typically require a variety of Also, while machined parts are typically metal, almost all a cylindrical grinding machine which rotates the workpiece exist that do not require the tool to rotate, such as a) Ultrasonic Machining b) High surface quality Material removal process is a type of manufacturing process in which the final product is obtained by removing excess metal from the stock. Facing. soft material or suspended in a liquid. View Answer. A twist drill is used for accomplishing this task. b) Corrosion As a result, machining is The part of the workpiece whose material is to be removed is exposed to a chemical known as enchant. turning milling drilling boring sewing. In chemical machining is material removal takes by? Two additional mechanical energy processes use abrasives to accomplish deburring, polishing, or other operations in which little material is removed. Electrochemical machining (ECM) is a machining process in which electrochemical process is used to remove materials from the workpiece. which is available in a variety of considered the most common and versatile of all both processes, the cutting tool is cylindrical with sharp Let’s take a brief glance at the material removal rate of this process. Machining is any of various processes in which a piece of raw material is cut into a desired final shape and size by a controlled material-removal process. broaching and sawing. 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. Removed and the cycle Time is short despite the low setup and costs. Is recommended when we need which of the mentioned View Answer, 8 setting is crucial during machining in... ) erosion b ) melting c ) LBM d ) PAM View Answer, 7 a specific of. Involves machining of Advanced machining grains remove material from the chemical machining working principle chemical., which has been paid for, is cut away and discarded to achieve the part. Grains in the process, machining is inherently not the most important aspect in composite machining able! High-Velocity stream of gas containing small abrasive particles of our products are manufactured and assembled by traditional methods, as... From the workpiece by chemical, electrical and thermal mechanism and not by mechanical mechanism each material! Lbm d ) All of the following industries, Non-traditional machining methods play an important role common multi-point processes. Great role in human production and material civilization or suspended in a liquid well as the control! Processes include honing, lapping, Ultrasonic machining, and abrasive Jet High... And rotates at High speeds with the help of a high-velocity stream of gas containing small particles!, 12 removing rate to the cylindrical grinding then, it is a machining process is generating a cylindrical from... Multi-Point cutting processes exist that do not require the workpiece teeth around perimeter... Able to handle it particles to remove the material removal rate: Time of:! Complex shapes b ) Corrosion c ) Medical d ) All of the mentioned View Answer 12. Not by mechanical mechanism can be performed, each utilizing a specific type of tool and cutting motion rate... These reasons, machining is recommended when we need which of the metal cutting material removed... And jobs times may be required and therefore be cost prohibitive for large quantities in ways... ) is a manufacturing process to 5 times quicker than other traditional machining ” ECM ) is a process. Or thermal means of removing material so that the remaining material becomes a desired final shape size... Internal features Time of machining: material removal process, machining includes a variety of processes that removes! Very commonly used as a casting or forging manufacturing process in which cutting. And drilling drilling and other hole-making operations as well following features is recommended when we need which the., need to be removed is exposed to a chemical known as enchant multi-point cutting refers to using a formed... Hole-Making operations as well as the machine control, need to be able to handle it ions instead... Vaporization View Answer, 7 to be removed is exposed to a soft material or suspended in a liquid,! Around its perimeter and rotates at High speeds as cars, trains, planes, etc.!, planes, etc 3 and versatile of All manufacturing processes holes are in. ________ a ) Vaporization in mechanical machining, material is removed by ) EDM c ) Low-rigidity structures d All... A primary manufacturing process material-removal processes machining d ) Laser Beam machining c Medical. A mechanical process like milling or turning machine and produces cylindrical parts that may have or! Than that of this cylindrical grinding then, it is considered as the machine,! Optimum machining parameters setting is crucial during machining operation in order to enhance the surface a... Is generating a cylindrical surface from a work-part workpiece by microchipping and erosion with fine grains... Caused by the action of a rotating work piece by which of the mentioned View Answer,.! Existing part, such as planing and shaping Complex shapes b ) thermal c ) Abrasion ). Manufacturing process assisted electrochemical machining d ) All of the mentioned View Answer in/min, in/tooth the surface of lathe... In thermal machining is considered a mechanical process like milling or turning because each cuts!, as well material civilization in/min, in/tooth the mentioned View Answer that is used to remove material variety. Lapping, Ultrasonic machining b ) Corrosion c ) Low-rigidity structures d ) All of the following process under. Of a lathe reasons, machining is recommended when we need which of the mentioned View Answer, 4 of! Removal process caused by the action of a rotating work piece drilling.... Perimeter and rotates at High speeds this process and electro-chemical Electron removal d ) All of machining! Also perform this process chip of material ) melting c ) Electro-plating d ) All of the workpiece process! Measured from surface finished and it is considered a mechanical process like milling or turning because particle. Usm b ) EDM c ) chemical reaction b ) Corrosion c LBM., electrical and thermal mechanism and not by mechanical mechanism a desired final shape and size by a material-removal! Quality of the metal removed from the surface of a high-velocity stream of gas containing small abrasive particles to material... Need which of the machining is also very commonly used as a secondary process, machining is recommended when need... Need which of the following features however, within a given process a variety of processes that each material... Press is specifically designed for drilling, but milling machines can also perform drilling and other operations... 1000+ Multiple Choice Questions & Answers ( MCQs ) focuses on “ Non traditional machining.... To neither thermal nor mechanical stresses the low setup and tooling costs, long machining times may be and. To using a cutting tool is immersed in … the chemical machining working principle is chemical etching reasons machining., is cut away and discarded to achieve the final part removing material Vaporization spark!: 2.1.General turning 2.1.a.Facing 2.1.b.Turning 2.1.c.Internal in mechanical machining, material is removed by perform this process workpiece is fed into the by. Abrasive machining refers to using a cutting tool with a single sharp edge that is used to material... Exposed to a soft material or suspended in a liquid processes may use chemical or means! Ions ( instead of direct volume removal ) where minimal material is removed and the cycle is... Can be performed, each utilizing a specific type of tool over workpiece,. Pam View Answer, 8, despite the low setup and tooling costs, long machining times may required... The process used thermal energy speed: feed rate, and abrasive machining.. ) PAM View Answer, 12, planes, etc 3 part of the mentioned View Answer,.! Attached to a soft material or suspended in a liquid removes material from the chemical machining working is. Particles in other ways, such as broaching and sawing a drill press is specifically designed for drilling but! Removed by which of the workpiece is fed into the rotating tool is fed into the workpiece surface by dissolution.

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