ULTRASONIC MACHINING PROCESS: Ultrasonic machining is a non-traditional machining process, grouped under the mechanical group NTM processes. Ultrasonic machining doesn’t require heating workpieces. An abrasive gun is used to supply an abrasive slurry, which is a mixture of abrasive grain and the water in between tool-workpiece interface under a definite pressure. Machining very precise and intricate shaped articles.2. View Answer, 4. In addition to small-scale components, ultrasonic vibration machining is used for structural components because of the required precision and surface quality provided by the method. Ultrasonic Machining can be used for which of the following processes and applications? a) Drilling b) Sinking and contouring c) Polishing d) All of the mentioned View Answer Ultrasonic Machining (USM) and Ultrasonic Machining Tool: The use of ultrasonics in machining was first proposed by L. Balamuth in 1945. If a workpiece is sensitive to thermal fluctuates, it can be safely altered using this machining process. a. air b. liquid ... Ultrasonic Machining (USM) c. Laser Beam Machining (LBM) d. Ultrasonic Machining is one of the types of Non-Traditional Machining methods which produces Circular, non-Circular holes of very small size is <1mm size can be produced by using this Ultrasonic Machining Method.. All the operations done with the ultrasonic machining method are cost effective and best in results. It is mainly used for: (i) Drilling, (ii) Grinding, (iii) Profiling, Profiling the holes. Now this process is used in many industries to remove metal due to its lower cost, no heat generation, and effective machining. Machining of dies for wire drawing, punching, and blanking operations. More information on Ultrasonic machining process . The tool should be designed as like when the operation is performed does not lead to brittle fracture of it. MCQ on Mechanical Energy Based Unconventional Machining Process ... 5.Ultrasonic machining can machine both metallic and non-metallic surfaces. Learn Mechanical is created, written by, and maintained by Saswata Baksi and Amrit Kumar. c) Size Profiling the holes. Engraving; Trepaning and coining; Threading; Slicing and broaching hard materials. 6 7. b) Diameter Ultrasonic machining can be combined to the electrolytic/ spark erosion machining of conducting material. b) Sinking and contouring State whether the following statement is true or false. c) Ferrite c) 0.25 – 0.40 cm/min c) 5 to 7 mm This is how ultrasonic machining works. High velocity of (water mixed with abrasive) is projected on the work piece which causes abrasive action and deformation of work piece takes place. When very frequency vibrations are applied on to the tool, the tool is vibrating at a very high frequency. Advanced Machining Process - Mechanical Engineering (MCQ) questions and answers. Process of […]. Further on we'll see the applications, advantages, and disadvantages of die casting as well. In order to cut harder materials like metals or granite, an abrasive material is mixed in the water. The device for converting any type of energy into ultrasonic waves is the ultrasonic transducer. a) 1 to 2 mm Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Whether a workpiece is made of glass, ceramic or even quartz, its physical dimensions can be altered using ultrasonic machining. The Ultrasonic Machine consists of different parts as follows: To starts, the machining process power is required. Drilling the round holes of any shape. Material that has a high scrap rate means fragile material can be machined by this process very effectively. In Ultrasonic Machining, Magnetostrictor is energized at ultrasonic frequency. here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Advanced Machining Questions and Answers – USM – Dimensional Accuracy and Surface Quality, Next - Advanced Machining Questions and Answers – Water Jet Machining – Introduction and Machining system, Machine Design Questions and Answers – Design Cosiderations, Machine Design Questions and Answers -Fits & Hot and Cold Working of Metals, Bachelor of Computer Applications Questions and Answers, Master of Computer Applications Questions and Answers, Engineering Metrology Questions and Answers, Manufacturing Engineering / Processes II Questions and Answers, Manufacturing Engineering / Processes I Questions and Answers, Machine Tools & Machining Questions and Answers, Advanced Machining Processes Questions and Answers, Advanced Machining Questions and Answers – LBM-Advantages and Limitations, Advanced Machining Questions and Answers – USM – Machining System, Advanced Machining Questions and Answers – Non Traditional Machining, Advanced Machining Questions and Answers – WJM – Applications, Advanced Machining Questions and Answers – Shaped Tube Electrolytic Machining, Advanced Machining Questions and Answers – LBM-Applications – 3, Advanced Machining Questions and Answers – EDM-Applications – 3, Advanced Machining Questions and Answers – Electro Chemical Drilling, Advanced Machining Questions and Answers – USM – Dimensional Accuracy and Surface Quality, Advanced Machining Questions and Answers – Electrochemical Jet Drilling, Advanced Machining Questions and Answers – LBM-Applications – 2, Advanced Machining Questions and Answers – Ultrasonic Machining – Introduction, Advanced Machining Questions and Answers – Traditional Machining. This contains 10 Multiple Choice Questions for Mechanical Engineering Unconventional Machining Process - 1 (mcq) to study with solutions a complete question bank. What is the limit of surface area that is to be machined using USM? In this article first, we will see the Definition, How it's Work after that I'll also show you the Applications, Advantages, […], In the field of mechanical engineering, the Extrusion Process is widely used by the engineers to form an object which has a fixed cross-sectional area. a) True Depending upon the application, A.C. or D.C. machines are used in arc welding, but in some cases, either of them can be used. 1. Contact Bullen to learn more about ultrasonic machining and our host of glass machining, ceramic machining, and advanced material machining capabilities. No heat is generated in this process and the tool vibrates longitudinally at 20 to 30 kHz with an amplitude between 0.01 to 0.06 mm. 1. Practice quiz & question bank based on university syllabus covering all lessons, year notes, concepts & formula from textbooks & class notes. a) 0.01 – 0.10 cm/min The motion of the tool takes place vertically or orthogonal to the surface of the part. The tool is made of soft ductile material like copper or brass, soft steel or stainless steel. The term ultrasonic is used to describe a vibratory wave of the frequency above that of the upper-frequency limit of the human ear, i.e. In Micro-USM, using WC tool, what is the value of diameter can be achieved? d) All of the mentioned. In which of the following materials, Rotary Ultrasonic Machining can be used to drill holes through them? With a number of manufacturing methods, manufacturers often want to find the best way for the specific project. © 2011-2020 Sanfoundry. It can be used to machining of highly fragile material such as glass, and nonconductive material where other type of machining such as electro-discharge machining and electrochemical machining is not possible. View Answer, 11. Ultrasonic Machining Process description. Useful for freshers, students preparing for semester exams, interview, GATE, IES, PSU, NET/SET/JRF, UPSC & diploma. A variation of this technique is ultrasonic drilling, which makes use of pneumatic vibrations at ultrasonic… d) 7 to 10 mm “Rotary Ultrasonic Machining is the process in which, interrupted drilling of small-diameter holes takes place.” As the machines perform several techniques like: It consists of an electromechanical transducer connected to the AC supply. generally above 16 kHz. Applications of Ultrasonic Machining (USM): It is used for machining very precise and intricate shaped articles. This machining process comes into existence in 1950 for finishing EDM surface. Machining the glasses, ceramics. The applications of Ultrasonic Machining are: The advantages of Ultrasonic Machining are: Here are some disadvantages of Ultrasonic Machining: So this is the overview of Ultrasonic machining I hope you like this article, to read this type of Manufacturing stuff keeps visiting LearnMechanica.Com. a) conventional milling. b) False True 22.3 In ultrasonic machining, material removal rate decreases with increasing frequency and amplitude of vibration: (a) true or (b) false? ... (MCQ) questions and answers >> Advanced Machining Process; 1) The Laser Beam Machining process can be carried out, when the media for energy transfer between tool and workpiece is. c) 5 μm Therefore the tool is made of tough, strong and ductile materials like steel, stainless steel or HSS (High stainless steel), Mild Steel, etc. d) All of the mentioned Ultrasonic machining employs the high-intensity vibrations of a transducer to move a machine tool. This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “USM – Machining System”. Holes as small as 0.1 mm can be drilled. Water Jet Machining (WJM) also called water jet cutting, is a non-traditional machining process in which high-velocity jet of water is used to remove materials from the surface of the workpiece.WJM can be used to cut softer materials like plastic, rubber or wood. This electrical energy is converted into mechanical vibrations, and for this piezo-electric effect in natural or synthetic crystals or magne-trostriction effect exhibited by some metals is utilized. b) Only oscillation The process integrates well with semiconductor and MEMS Machined features can be aligned to previously patterned, machined, or etched substrates. a) 1 μm The solved questions answers in this Unconventional Machining Process - 1 quiz give you a … When the AC power is supplied with high frequency, the transducer starts vibrating longitudinally by magnetostriction, which is transmitted to the penetrating tool through a mechanical focusing device called Velocity transformer. c) Polishing What is Ultrasonic […] By 1954, the machine tools, using the ultrasonic principle, had been designed and constructed. b) 0.10 – 0.25 cm/min c) wire cut EDM. The design of this site was heavily, heavily inspired by, http://www.nitc.ac.in/dept/me/jagadeesha/mev303/Chapter_3_USM.pdf, https://www.sciencedirect.com/science/article/pii/S0890695597000369, Electron Beam Welding: Definition, Construction, Working, Applications, Advantages, and Disadvantages [Notes with PDF], Extrusion Process: Definition, Working Principle, Types, Applications, Advantages, and Disadvantages [Notes with PDF], Die Casting: Definition, Process, Types, Defects and Remedies, Applications, Advantages, Disadvantages [With PDF]. c) Feed pipe View Answer, 3. At the beginning we'll start with the definition, then we dive into the steps of die-casting, Types, die casting defects with the solution. 1. Economic considerations and recent developments in USM Economic considerations: The process has the advantages of machining hard and brittle materials to complex shapes with good accuracy and … Drilling in Ultrasonic Machining is done, by which motion of the tool? Sanfoundry Global Education & Learning Series – Advanced Machining. View Answer, 8. This Welding Process was first developed in 1949 by Karl-Heinz Steigerwald who was a German physicist. b) Alumina The material to be processed will affect the selection of the machining process. 5. Ultrasonic Machining: Definition, Parts, Working, Advantages, Disadvantages, Applications [With PDF]. This process is used for drilling both circular and non-circular holes in 2. very hard materials like carbide, ceramics, etc.3. The following of Ultrasonic Machining application are: Ultrasonic Machining is used for the Machining of non-conductive ceramics. The main reason why this machining process is used in the manufacturing area is because it evolves less heat in the process. Latest Manufacturing Processes - Part 1- objective questions (MCQs) & answers for competitive exams & interviews. The slurry used in the ultrasonic machining contains 20 % to 60% of water by volume, aluminum oxide, boron Carbide and silicon carbide particles. Working Principle of ultrasonic Machining: Let us know if you liked the post. What is the value of depth in Ultrasonic sinking, after which, material removal becomes difficult? b) Work piece As the diagram showing the first is connected to the power supply. An electromechanical transducer connected to the AC supply. a) True. 2. These micromachining processes mainly use mechanical forces to remove materials. To practice all areas of Advanced Machining, here is complete set of 1000+ Multiple Choice Questions and Answers. 10,000 oscillations per second b. Ultrasonic Machining (USM) also called as ultrasonic vibration machining is a machining process in which material is removed from the surface of a part by low amplitude and high frequency vibration of a tool against surface of material in the presence of abrasive particles. Which results in faster machining, however, it is seldom used because of … Today in this article I am going to give you an in-depth overview of Electron Beam Welding Machine. Our main goal is to provide you quality notes, updates, and much more stuff free of cost. Ultrasonic Machining Animation Ultrasonic machining is a loose abrasive machining process in which the mirror image of a shaped tool can be created in hard, brittle materials. b) False . The other mechanical machining method is Abrasive jet Machining. View Answer, 7. The tool, which is negative of the workpiece, is vibrated at around 20 kHz with an amplitude between 0.013mm and 0.1mm in an abrasive grit slurry at the workpiece surface. A water-based slurry of abrasive particle used as an abrasive slurry in this machining. Ultrasonic machining can be used to machine both metallic and nonmetallic materials: (a) true or ... ultrasonic machining, or (g) water jet cutting? c) <1000 mm2 As the tool vibrates it is pressed on the work surface with light force and allowing the abrasive slurry to flow through between tool-workpiece interface. The Impact force arising out of the vibration of the tool end and the flow of abrasive slurry causing thousand of microscopic grains to remove from work material by abrasion. On which of the following features of cavity, will the penetration depth depend on? Electrical discharge Machining b. Electrochemical grinding c. Electrochemical Machining d. Ultrasonic Machining (Ans:c) 29. d) 0.40 – 1.40 cm/min View Answer, 9. Ultrasonic machining is precise enough to be used in the creation of microelectromechanical system components such as micro-structured glass wafers. Basic of water jet machining ( USM ): it is used in the creation of microelectromechanical components. 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