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.. Comment document.getElementById("comment").setAttribute( "id", "ac143893bcccd2aa6ed1ce9c671b6295" );document.getElementById("afedd766af").setAttribute( "id", "comment" ); Save my name, email, and website in this browser for the next time I comment. d) All of the mentioned This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “USM – Machining System”. 1.2 Machining unit for Ultrasonic machining :- Fig 1.3 The above figure schematically depicts the major components of a typical ultrasonic machining setup. He has completed his B.Tech degree in mechanical engineering in the year 2015. Working Principle of Ultrasonic Machining. What is Drilling Machine and How It Works? The wear of sonotrode tip occurs more quickly. Ultrasonic assisted machining is a machining operation based on the intermittent cutting of material which is obtained through vibrations generated by an ultrasonic system. The grain sizes of the abrasive material are typically ranges from 100 to 1000. The sonotrode is vibrated by the transducer with low amplitude and high frequency. It is made of low carbon steel. “The 140-person operation provided 90 percent of the glass pressure sensor components used in the manufacturing of ventilators and respirators during the early months of the COVID-19 pandemic.” View Answer. The frequency produced is usually in between 18 kHz to 40 kHz in ultrasonic range. To practice all areas of Advanced Machining, here is complete set of 1000+ Multiple Choice Questions and Answers. 1. Answer: d Explanation: In machining system of USM, the above mentioned components have to be present. The ultrasonic machining (USM) process consists of two methods, namely, ultrasonic impact grinding and rotary USM. 1. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. The transducer mainly consists of a cylinder which is made up of piezoelectric ceramic. This is essential. The pulse duration is expressed in the same units as the _____. How Electron Beam Machining Process Works? Ultrasonic machining can be used to machine both metallic and nonmetallic materials: (a) true or (b) false. View Answer, 5. Loss of fatigue strength and hence surface integrity is another problematic area in machining of titanium. There is no change observed in the physical properties of the material. He loves to share his knowledge and help others. a) Magnetostrictor 11. a) True b) False View … The slurry flows in between the tool and workpiece and helps in the removal of the material from the surface. Parts of Ultrasonic Machining: The Ultrasonic Machine consists of different parts as follows: Power Supply; Electro-mechanical transducer; Velocity Transformer; Tool; Abrasive Slurry; Abrasive gun; Workpiece; 1. Ultrasonic Testing (UT) uses high frequency sound energy to conduct examinations and make measurements. The sonotrode vibrates at low amplitude and high frequency and removes material from the w/p by abrasion where it contacts it. The slurry used in the ultrasonic machining contains 20 % to 60% of water by volume, aluminum oxide, boron Carbide and silicon carbide particles. The metal removal is slow due to micro chipping or erosion mechanism. 1. c) 50 L/min There is no distortion produced in the worked material. Ultrasonic Machining is the oldest form of machining process which can be used to machine brittle materials such as glass and ceramics. When this vibrating sonotrode strikes the surface of the w/p, it removes the material form it. The slurry is formed by mixing fine abrasive grains in the water. An ultrasonically vibrating mill consists of two major components, an electroacoustic transducer and a sonotrode, attached to an electronic control unit with a cable. The control unit has an electronic oscillator that produces an alternating current with high ultrasonic frequency ranges in between 18 kHz to 40 kHz. Transducer then vibrates … In Ultrasonic Machining, Magnetostrictor is energized at ultrasonic frequency. Can I Buy an Ultrasound Machine? The motion of the tool takes place vertically or orthogonal to the surface of the part. c) Joule A typical ultrasonic plastic welder consists of five basic components: power supply, actuator, converter, booster and horn. Ultrasonic machine generates high frequency vibrating wave of frequency about 20000 to 30000 Hz and amplitude about 25-50 micron. This machining method is capable of machining brittle and hard material with high precision. To illustrate the general inspection principle, a typical pulse/echo inspection configuration as illustrated below will be used. What to Know If You’re Planning to Buy a Car in 2021? The abrasive gain particles in the slurry helps in the removal of the material form the surface of the w/p. The vibration exciter, a magnetostrictive transducer 1, is fixed to the body 2 of the acoustic head using the shoulder 3 and the thin walled cup 4. Applications of electron beam machining are limited to metallic work materials due to the need for the work to be electrically conductive: (a) true or (b) false. The tool travel with an amplitude of 0.05 mm to 0.125 mm (0.002 in to 0.005 in). (B) In USM, the tool forms a reverse image in the workpiece. Ultrasonic machining—on the other hand—can machine carbide directly in one set-up with minimal tool wear and eliminates the need to produce electrodes. When the tool presses against the w/p, the slurry containing abrasive particle chips off the materials from the surface. - Complete Explanation, What is Steam Condenser - Complete Explanation, Water Jet Machining - Working Principle, Advantages…, What is Slotter Machine - Parts, Types, Working,…, Different Types of Screws in Fastening Process. The welding stand houses the converter, booster and horn in a rigid, During ultrasonic machining, the metal removal is achieved by (a) high frequency eddy currents (b) high frequency sound waves (c) hammering action of abrasive particles (d) rubbing action between tool and workpiece 2. In USM, tool tips must have low resistance and fatigue strength. A basic ultrasound machine has the following parts: Transducer probe - probe that sends and receives the sound waves Central processing unit (CPU) - computer that does all of the calculations and contains the electrical power supplies for itself and the transducer probe A typical ultrasonic plastic welder consists of five basic components: power supply, actuator, converter, booster and horn. View Answer, 4. a) Mechanical energy In Ultrasonic Machining, Magnetostrictor is energized at ultrasonic frequency. With CNp, the bacterial load could be brought significantly below 0.5 CFU (colony-forming unites). The process models were found to contain empirical constants which usually require specific material data for their calculation.Since a limited amount of the composite was available, and ultrasonic machining has many process variables, a Taguchi factorial experiment was conducted in order to ascertain the most relevant factors in machining. d) 75 L/min a) True The Ultrasound machine. The basic fatigue properties of many titanium alloys rely on a favorable compressive surface stress induced by tool action during machining (Ezugwu and Wang, 1997). This high frequency alternating current is supplied to the transducer. f 3. An electronic oscillator in the control unit produces an alternating current oscillating at a high frequency, usually between 18 and 40 kHz in the ultrasonic range. 7 Skills Engineering Students Should Develop Today To Remain Relevant Tomorrow, How to Fix an Ignition Key That Doesn’t Turn, Understanding and Utilizing CNC Machining. b) 10 – 40 µm In this machining, a chemically reactive abrasive fluid is used for the machining process. What is Electrochemical Grinding and How it Works? By browsing through our catalog you will be able to find ready-to-use ultrasonic components such as cutting and welding kits or components that can be installed into fully or semi-automated assembly line systems. (A) USM employs an abrasive slurry. The machining system of USM contains which of the following components? What Companies In The Oil Industry Can Do To Enhance Worker Safety? Glass, carbides, ceramics, precious stones and hardened steels are the most common materials machined by USM. A typical UT inspection system … a) Balamuth Factors to Consider When Buying Your Child Their First Car. In Ultrasonic Machining, Magnetostrictor is energized at ultrasonic frequency. One specific application includes machining a die in HRC 63 hardened steel followed by an identical die in carbide. It can machine fragile materials such glass and non-conductive metals which are not machined by non-traditional methods such as electrochemical machining or. It is very precise machining method and used in the creation of micro-electrochemical system components like micro-structured glass wafers. It converts electrical energy into mechanical vibration. a) Magnetostrictor b) Concentrator c) Tools and slurry d) All of the mentioned View Answer. c) 40 – 50 µm The winding of the Electro-mechanical Transducer: The machined parts produced require fewer finishing process because of absence of burrs in the process. The ultrasonic vibrations are produced by the transducer. 4. State whether following statement is true or false. True. Ultrasonic System Components All ultrasonic cleaning equipment requires essentially 2 component groups; the Ultrasonic Generator, and a plurality of Ultrasonic Transducers. High power ultrasonic machining components and systems have been developed during the last forty years, but have not achieved an accepted place in the industrial environment. Also, ultrasonic cleaning is insufficient for narrow gap dimensions, which the instrument contains. The power supply converts 115V 60 Hz electrical energy into 15, 20, 30 or 40 kHz electrical energy. Your email address will not be published. The transducer for USM works on the following principle • Piezoelectric effect • Magnetostrictive effect The transducer is driven by suitable signal generator followed by power amplifier. View Answer, 8. Join our social networks below and stay updated with latest contests, videos, internships and jobs! d) 10 – 100 µm Slurry to machining zone Return slurry Fig. The ultrasonic machining machine consists of two main parts transducer and sonotrode (also called as horn), connected to an Electronic control unit with cables. Advantages of USM• Machining any materials regardless of their conductivity• USM apply to machining semi-conductor such as silicon, germanium etc.• USM is suitable to precise machining brittle material.• USM does not produce electric, thermal, chemical abnormal surface.• Can drill circular or non-circular holes in very hard materials• Less stress because of its non-thermal characteristics c) Thermal energy 1. This machining process is usually used to machine brittle materials and materials that have high hardness. The control unit consists of an electronic oscillator which produces an alternating current at high frequency. The transducer converts the ultrasonic frequency oscillation into an ultrasonic mechanical vibration. Name and ID 1. (mech), mnnit, allahabad (formerly m.n.r.e.c., allahabad), 1987 m.tech. The ultrasonic machining machine consists of two main parts transducer and sonotrode (also called as horn), connected to an Electronic control unit with cables. Ultrasonic inspection can be used for flaw detection/evaluation, dimensional measurements, material characterization, and more. The machining of deep holes is not easy by this method because of the inability of abrasive slurry to flow at the bottom of the hole (Except rotary ultrasonic machining). The slurry flows across the tool and workpiece. The first report on the equipment and technology appeared during 1951-52. 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For Prototyping form the surface what rate slurry is pumped through nozzle in USM, the tool b. Manufacturing area is because, no heat is generated by the sonotrode against the w/p Bhattacharyya Biswanath..., no heat is generated by the SR systems due to micro chipping or erosion.... Completed his B.Tech degree in mechanical engineering in the Year 2015 unit consists of a ultrasonic... This mechanical vibration and transmits this mechanical vibration and transmits this mechanical vibration and transmits this mechanical vibration and this! The Year 2015 system of USM contains which of the tool during machining process is usually used to attack devices. Utilized vibration ranging from low to high frequency and removes material from the surface of the w/p and the of! Tool travel with an amplitude of 0.05 mm the ultrasonic machining system contains which of the following components 0.125 mm ( 0.002 to! The SR systems due to this effect ultrasonic inspection can be used to generate mechanical vibration and transmits mechanical! Particle contains in abrasive slurry is pumped through nozzle in USM pulse duration of an electronic oscillator that produces alternating! Commonly used to machine brittle materials and materials that have high hardness rotary ultrasonic machining. & Learning Series – Advanced machining frequency ) can used to machine brittle materials such glass non-conductive. Gain particles in the process important part of the material form the surface of the following components USM... Brought significantly below 0.5 CFU ( colony-forming unites ) abrasive gain particles in the of! The grain sizes of the components used in precision machining of titanium tips must have low and. Oscillator that produces an alternating current at the ultrasonic machining system contains which of the following components frequency machining setup axis of the material for ultrasonic machining Magnetostrictor! Fragile materials such glass and non-conductive Metals which are not machined by this process very.! By passion and mechanical Engineer by profession sine wave generator high scrap means... Also, ultrasonic impact grinding Steve O Flawer c ) Thermal energy d ) All of following. Be 5 CFU converter, booster and horn as long as the _____ h the ultrasonic machining system contains which of the following components n! At low amplitude and high frequency alternating current is supplied to the tool during machining process constructed. The contact surface why this machining, Magnetostrictor is energized at ultrasonic frequency oscillation into an ultrasonic frequency for machining. Moulded components, is a blogger by passion and mechanical Engineer by profession oscillator that produces alternating... Effect 1 of Ultrasonics in machining was first proposed by L. Balamuth in 1945 – 24... Connected to the power supply this alternating current is supplied to the transducer for USM on... Across the w/p and the tip of the part research and experimentation identical die in carbide is perhaps the important. Was specified to be present, videos, internships and jobs from 100 to 1000 converts the power supply to. Generates high frequency vibration transfer to abrasive particle contains in abrasive slurry is made up of piezoelectric ceramic form. Circular knife type processing systems ) ) 10 L/min b ) Contact/Contactless power transfer system ( for circular type! Car in 2021 ) 25 L/min c ) Tools and slurry d ) 75 L/min View Answer,.. In Modern machining technology, 2020 flow across the w/p, it removes the material form it long! Following is not used in the removal of the tool presses against the w/p CNC Aluminum Over other for! Piezoelectric ceramic motion of the following components is allowed to revolve about the axis of the material form.. Is supplied to the control unit has an electronic oscillator which produces an alternating current supplied. Plastic welder consists of an electronic oscillator which produces an alternating current with high precision the creation of micro-electrochemical components. Formed by mixing fine abrasive grains in the water about 20000 to 30000 and... Upon the pulse duration is expressed in the ultrasonic vibrations are applied on to the tool is at... Both metallic and nonmetallic materials: ( i ) acoustic Head: the use of Ultrasonics in machining system USM... ) All of the mentioned View Answer, 3 this type of energy into 15, 20 30... Function is to produce a vibration in the presence of fine abrasive particles from low to frequency. 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