The transducer operates by magnetron striction. The ultrasonic generator converts the power frequency AC power into an ultrasonic frequency oscillation with a certain power output. There is no distortion produced in the worked material. The vibration of the tool fixed to the end of the horn is ultrasonically vibrated by the amplitude amplifying rod (horn), forcing the abrasive suspension to continuously hit at high speed and polishing t… (mech), mnnit, allahabad (formerly m.n.r.e.c., allahabad), 1987 m.tech. True. It converts electrical energy into mechanical vibration. Your email address will not be published. The maximum value per part was specified to be 5 CFU. In regard to USM (ultrasonic machining), which one of the following is NOT true? The machined parts produced require fewer finishing process because of absence of burrs in the process. d) 10 – 100 µm The power supply converts 115V 60 Hz electrical energy into 15, 20, 30 or 40 kHz electrical energy. Working Principle of Ultrasonic Machining. It consists of a generator for supplying a high frequency electric current, a transducer to convert this into a mechanical motion in the form of a high frequency vibration, a holder … 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). 18 kHz to 40 kHz) is used to generate mechanical vibration of low amplitude and high frequency. we respect your privacy and take protecting it seriously, What is Heat Exchanger? The first report on the equipment and technology appeared during 1951-52. EATON, Ohio – November 24, 2020 – Bullen Ultrasonics is Dayton Business Journal’s 2020 Business of the Year. The metal removal is slow due to micro chipping or erosion mechanism. d) Turing c) 50 L/min One specific application includes machining a die in HRC 63 hardened steel followed by an identical die in carbide. d) None of the mentioned 18-10-2016 AKHIL MANHAS 6. b) Contact/Contactless power transfer system (for circular knife type processing systems). When very frequency vibrations are applied on to the tool, the tool is vibrating at a very high frequency. This is essential. There is no change observed in the physical properties of the material. 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). Ultrasonic System Components All ultrasonic cleaning equipment requires essentially 2 component groups; the Ultrasonic Generator, and a plurality of Ultrasonic Transducers. A typical ultrasonic plastic welder consists of five basic components: power supply, actuator, converter, booster and horn. Bijoy Bhattacharyya, Biswanath Doloi, in Modern Machining Technology, 2020. It is capable of producing high tolerance parts. View Answer, 3. The sonotrode is vibrated by the transducer with low amplitude and high frequency. m a) True b) False 13. This machining method is capable of machining brittle and hard material with high precision. Your email address will not be published. - 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. It also provides schematic representations of the components used in rotary USM and ultrasonic impact grinding. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. 2.Magneto-strictive Transducer. The ultrasonic vibrations are produced by the transducer. To practice all areas of Advanced Machining, here is complete set of 1000+ Multiple Choice Questions and Answers. a) 0.0001 – 0.001 µm 1. 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. In USM, tool tips must have low resistance and fatigue strength. When this vibrating sonotrode strikes the surface of the w/p, it removes the material form it. USM is used in precision machining of hard and brittle material. The machining system of USM contains which of the following components? The transducer is driven by suitable signal generator followed by power amplifier. The ultrasonic machining machine consists of two main parts transducer and sonotrode (also called as horn), connected to an Electronic control unit with cables. Name and ID 1. The machining system of USM contains which of the following components? This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “USM – Machining System”. Electrochemical Machining (ECM) – Working Principle, Equipment, Advantages and Disadvantages with Application. 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. Components of an Ultrasonic Assembly System. Inaudible sounds (Ultrasonic frequency) can used to attack these devices by exploiting the above vulnerability. 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. What is the value of the amplitude obtained without mechanical amplifier? The surface of the tool is impregnated with diamonds that is used to grind down the surface of the part. 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.. In Ultrasonic Machining, magnetostrictor converts magnetic energy into which type of energy? Abrasive slurry is not used in this type of machine for material removal. Generally, ultrasonic vibration is used for machining especially brittle materials with the help of abrasives slurry in which material removal is achieved by brittle fractures. A sonographer can adjust the duration of an acoustic pulse since it depends upon the pulse's propagation speed. To illustrate the general inspection principle, a typical pulse/echo inspection configuration as illustrated below will be used. Using a user-friendly filter, you can set the following parameters to get necessary results: a price, year, manufacturer, model, priority options, and desired technical features. When the tool presses against the w/p, the slurry containing abrasive particle chips off the materials from the surface. Ultrasonic assisted machining is a machining operation based on the intermittent cutting of material which is obtained through vibrations generated by an ultrasonic system. One end of it is connected with the transducer and other end contains tool. The smaller grains (i.e. (B) In USM, the tool forms a reverse image in the workpiece. The transducer and sonotrode is attached to the control unit with a cable. 6.22) is perhaps the most important part of the machine. S 2020 Business of the amplitude obtained without mechanical amplifier unit for ultrasonic machining can be for. 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