Advanced manufacturing processes video lectures from iit. I the machining medium is solid grains suspended in an abrasive slurry. Chemical machining, aching of semi conductors, coating. Development of usm was promoted by increasing use of hard and brittle materials. Once youve done it, youll be able to easily send the logos you create to clients, make them available for download, or attach them to emails in a fo. Machining of glass and aluminia made possible by the machine. On this channel you can get education and knowledge for general issues and topics.
Sumit thakur mechanical ultrasonic machining ppt with pdf seminar report. Differences between welding, brazing, soldering and braze welding. This means it can be viewed across multiple devices, regardless of the underlying operating system. Ultrasonic machining is a nontraditional process, in which abrasives contained in a slurry are driven against the work by a tool oscillating at low amplitude 25100 microns and high frequency 1530 khz. Manufacturing of piezo electric components of up to several million units per year. Schematic view of an ultrasonic machine the ultrasonic vibrations are produced by the transducer. Mechanism, processes variants and applications of usm. Ultrasonic machining feed mechanism, head design and other aspects. Pdf is a hugely popular format for documents simply because it is independent of the hardware or application used to create that file. Machine condition power consumption kw machine idle 0. Therefore, from the very first implementation of ultrasonic energy for higherquality machining in the late 1920s to todays advanced computer numerical control ruam 5axis machining centers. High degree of flexibility in the engineering process, short lead times, manufacture of. Ultrasonic machining basic terms and working youtube.
To evaluate ultrasonic vibration effect, grinding test was performed with and without ultrasonic vibration in same machining condition. Abrasives gas propulsion system supplies clean and dry air. Ultrasonic machining effects of various inputs on the output. Making a pdf file of a logo is surprisingly easy and is essential for most web designers. Diesinker edm and wire cut electric discharge machining wedm 21. Ultrasonic welding is a plastics welding process, in which two work pieces are bonded as a result of a pressure exerted to the welded parts combined with application of high frequency acoustic vibration ultrasonic. Ultrasonic machining is a nonconventional machining process in which the abrasives hits on the work piece to remove the material. The applications of laser machining discussed include drilling, cutting, marking, and threedimensional machining of metals, ceramics, plastics, composites, and other materials, and micromachining. Sharma, department of mechanical engineering, iit roorkee. Plasma arc machining process pdf 10 plasma arc machining. Lecture series on manufacturing processes ii by prof. Ultrasonic machining and electrical discharge machining d. This machining process comes into existence in 1950 for finishing edm surface.
Manufacturing process technology ii dvd media storage type. An oversized pdf file can be hard to send through email and may not upload onto certain file managers. Certified quality development of customengineered solutions. Compensation modeling and optimization on contactless. A pdf file is a portable document format file, developed by adobe systems. Pdf file or convert a pdf file to docx, jpg, or other file format. Nontraditional machining mechanical engineering, iitb. The vibration exciter, a magnetostrictive transducer 1, is fixed to the body 2 of the acoustic head using the shoulder 3. For work material, alumina ceramic al2o3 was used while for tool material diamond electroplated grinding wheel was used.
Sunil pathak ultrasonic machining usm introduction 1927 wood and loomis proposed the use of ultrasound for machining. Ultrasonic machining is a mechanical material removal process that uses formed tools, vibration of high frequency and abrasive slurry mix. Abrasive jet machining but not water jet machining c. Read on to find out just how to combine multiple pdf files on macos and windows 10. Unit 10 week 8 abrasive water jet machining and ultrasonic machining. This method of machining resorts to percussion or hammering of abrasives against the work piece with the tool. Moderate pressure is applied between the two parts and an oscillating motion at ultrasonic frequencies is used in a direction parallel to the contacting surfaces. Initial application of usm finishing process for edm. Oct 22, 2008 lecture series on manufacturing processes ii by prof.
So this is the overview of ultrasonic machining i hope you like this article, to read this type of manufacturing stuff keeps visiting learnmechanica. Lecture 15 water jet and abrasive water jet machining lecture 16 ultrasonic machining process usm lecture 17 mechanism, processes variants and applications of usm lecture 18 micro usm and advances in usm lecture 19 electric discharge machining edm process lecture 20 diesinker edm and wire cut electric discharge machining wedm. In this work, machining test was carried out in various machining conditions using ultrasonic vibration capable cnc machine. Usm is used for machining hard and brittle materials. Contactless rotary transformer, with the advantages of highpower transmission efficiency and reliability, is a potential structure to transmit electric power in rum. Introduction to abrasive jet machining, ultrasonic machining and electrical discharge machining.
Plasma arc machining or laser beam machining is that which is the last point. Pdf a laser beam machining lbm database for the cutting. Basic components of ultrasonic machine tool ultrasonic machine comprises of a number of essential elements, which are necessary for the functioning of the machine. How to shrink a pdf file that is too large techwalla. Mar 28, 2017 today we will learn about ultrasonic machining, principle, working, equipments, application, advantages and disadvantages with its diagram. Compare conventional and nonconventional machining and analyze the different elements of ultrasonic machining and its applications. High speed machining hsm seminar and ppt with pdf report. Bond, iowa state university ultrasonic inspection is a family of nondestructive methods in which beams of highfrequency mechanical waves are introduced into materials, using transducers, for the detection and characterization of both surface and subsurface anomalies and. This article explains what pdfs are, how to open one, all the different ways. Luckily, there are lots of free and paid tools that can compress a pdf file in just a few easy steps.
Mechanical machining i jet machining and ultrasonic machining usm are typical examples of single action, mechanical non traditional machining processes. Examples of non conventional or also called non traditional or unconventional are 1. Paul,department of mechanical engineering, iit kharagpur. The tool travels vertically or orthogonal to the surface of the part at amplitudes of 0. Lathe operations performed on lathe machine, planner, shaper, drilling, milling and grinding. By michelle rae uy 24 january 2020 knowing how to combine pdf files isnt reserved. The process was first developed in 1950s and was originally used for finishing edm surfaces. Understanding of ultrasonic assisted machining with. Apr 15, 20 ultrasonic machining introduction ultrasonic machining is a nontraditionalmechanical means of uniform stock materialremoval processit is applicable to both conductive andnonconductive materials.
Examples of conventional machining processes are turning, boring, milling, shaping, broaching, slotting, grinding etc. I s a hybrid machining process where the ultrasonic machining and conventional grinding occur simultaneously to remove material from the workpiece by micro chipping and grinding. Lecture notes on modern manufacturing process dr pramod. On the other hand, grinding forces were measured by kistler dynamometer. Shantanu bhattacharya nptel coordinating institute. Understanding of ultrasonic assisted machining with diamond. Ultrasonic machining is a subtractive manufacturing process that removes material from the surface of a part through high frequency, low amplitude vibrations of a tool against the material surface in the presence of fine abrasive particles. Plasma arc machining process pdf plasma arc machining process pdf download.
To combine pdf files into a single pdf document is easier than it looks. I paid for a pro membership specifically to enable this feature. Rotary ultrasonic machining rum is an effective solution to cut, grind, or drill the advanced brittle hard materials. 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. Sunil pathak ultrasonic machining also known as ultrasonic impact grinding, combines ultrasonicallyinduced vibrations with abrasive slurry to create accurate cavities of virtually any shape in hard, brittle materials. Ultrasonic machining is nontraditional machining process which is used to machine brittle and hard material. The transducer, which generates the ultrasonic vibration version 2 me, iit kharagpur the horn or concentrator, which mechanically amplifies the vibration to the required amplitude of 15 50. In ultrasonic mode, ultrasonic vibration of 20 khz was generated by hsk 63 ultrasonic actuator. Plasma arc machining is a nontraditional thermal process. Figure 3 shows the basic element of ultrasonic machining. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. By using this stress free machining, nonthermal, nonchemical and nonelectrical process, the metallurgical, chemical or physical properties of the.
If your scanner saves files as pdf portbale document format files, the potential exists to merge the individual files into one doc. Miyan ram 1709653 1 introduction ultrasonic machining usm is the removal of hard and brittle materials using an axially oscillating tool at ultrasonic frequencies 1820 khz during that oscillation, the abrasive slurry of b4c or sic is continuously fed into the machining zone between a soft tool brass or steel and the workpiece. Adobe designed the portable document format, or pdf, to be a document platform viewable on virtually any modern operating system. Mechanical engineering n p t e l national programme on. An introduction to ndt common methods 3 section 2 visual and optical testing visual testing is the most widely used method of nondestructive testing ndt. In ultrasonic machining material removal is due to crack initiation, propagation and brittle fracture of material. Introduction, elements of process, chemical blanking process, process. Ultrasonic machining is a nontraditional process, in which abrasives contained in a slurry are driven against the work by a tool oscillating at low amplitude 25100. Ultrasonic vibration machining can only be used on materials with a hardness value of at least 45 hrc rockwell hardness.
The high velocity abrasive particles remove the material by micro cutting action as well as brittle fracture of the work material. The combination of normal and vibratory forces results in shear stresses that remove surface films and achieve atomic bonding of the surfaces. Precision abrasive machining processes such as ultrasonic machining are commonly employed to machine glasses, single crystals and ceramic materials for various industrial applications. The pdf format allows you to create documents in countless applications and share them with others for viewing. High degree of flexibility in the engineering process, short lead times, manufacture of individual units and very small quantities.
Depending on the type of scanner you have, you might only be able to scan one page of a document at a time. Answers to the assignments with full explanation nptel. Ultrasonic machining is a mechanical type nontraditional machining process. Water jet and abrasive water jet machining wjm and awjm, 4. Searching for a specific type of document on the internet is sometimes like looking for a needle in a haystack. Introduction to nontraditional machining for iit kanpur. These can be classified according to the source of energy used to generate such a machining action. Particularly suited for very hard andorbrittle materials such asgraphite, glass, carbide, and ceramics. Air, nitrogen and carbon dioxide to propel the abrasive particles.
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