Ultrasonic machining is a contemporary manufacturing method usually employed for processing materials with higher hardnessbrittleness such as quartz, semiconductor materials, ceramics. Ultrasonic machining introduction ultrasonic machining is a nontraditionalmechanical means of uniform stock materialremoval processit is applicable to both. There is no thermal damage and burr free surface can be produced. For the love of physics walter lewin may 16, 2011 duration. Ultrasonic machining basic terms and working youtube.
Singh, balbir singh modern machining processes presents unconventional machining methods which are gradually. Ultrasonic machining is of particular interest for the cutting of nonconductive, brittle workpiece materials such as engineering ceramics. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Unconventional machining process need classification brief overview. It is also known as ultrasonic impact grinding is an operation that involves a vibrating tool fluctuating the ultrasonic frequencies in order to remove the material from the work piece. Chemical milling sometimes called chem milling or contour machining or etching. In the paper, the material structure deformation under abrasive impacting is simulated by the lsdyna3d software, and the stresses occurring are analyzed numerically. A comparative study on ultrasonic machining of hard and.
The ultrasonic vibrations are transmitted directly on cutting tools, respectively directly to a cutting process. 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. 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. Study of parameters of ultrasonic machining ethesis. Ultrasonic machining is a mechanical type nontraditional machining process. Ultrasonic machining, or strictly speaking the ultrasonic vibration machining, is a subtraction 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. Ultrasonic machining,direct impact,abrasive grains,material removal rate. 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. Principle of ultrasonic machining during one strike, the tool moves down from its most upper remote position with a starting speed at zero, then it speeds up to finally.
Unlike other nontraditional processes such as laser beam, and electrical discharge machining, etc. Lecture series on manufacturing processes ii by prof. Ultrasonic technology poised for advance into general machining. In the process of the ultrasonic machining, the machining efficiency is affected directly by material removal rate. Pdf nontraditional manufacturing processes by gary f. This chapter presents usm and rotary ultrasonic machining rum, including definitions, machine elements, input variables and their effects, applications, and advantages and disadvantages. 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. Photochemical machining suron precision technology. Chemical machining working principle, application, advantages. This is known as gaseous chemical machining or hot chlorine machining and can be used for deburring of metal parts.
References module 9 nonconventional machining iit kharagpur. Principle of ultrasonic machining 1 this is the standard mechanism used in most of the universal ultrasonic machines 632014 hareesha n g, dept of aero engg, dsce 11 12. Ultrasonic technology poised for advance into general. Singh, balbir singh modern machining processes presents unconventional machining methods which are gradually commercial acceptance. The impact of free abrasive particles on the work surface. It is done by selective or overall removal of material by a controlled chemical. Even the more sophisticated methods require a visual test to be performed. Ultrasonic machining national institute of technology. Chemical machining is the material removal process for the production of desired shapes and dimensions. Introduction to nontraditional machining iit kanpur. The conventional hydroelectric power stations are usually located overground at the foot of a dam or a hill slope on the banks of a river.
Miyan ram 1709653 1 introduction ultrasonic machining usm is the removal of hard and brittle materials using an axially oscillating tool at. Schematic of ultrasonic machine tool usm is primarily targeted for the machining of hard and brittle materials dielectric or. Particularly suited for very hard andorbrittle materials such asgraphite, glass, carbide, and ceramics. Oct 22, 2008 lecture series on manufacturing processes ii by prof. Apr 15, 20 ultrasonic machining introduction ultrasonic machining is a nontraditionalmechanical means of uniform stock materialremoval processit is applicable to both conductive andnonconductive materials. Slicing, coining, dicing, lapping, engraving, deburring, broaching, boring and trepanning operations are also practical. The process of metal removal by electro chemical dissolution was known as long back as 1780 ad but it is only over the last couple of. Nptel syllabus advanced manufacturing processes web course course outline the course covers the details of the advanced machining theory and practices, advanced machining processes, advanced metal forming processes, advanced welding. Plasma arc machining process, diagram, advantages and. Chemical machining for some special purposes can also be achieved by using a jet of reactive gas, e. Called pam, this is a method of cutting metal with a plasmaarc, or tungsten inertgasarc, torch.
Paul,department of mechanical engineering, iit kharagpur. Ultrasonic machining offers a solution to the expanding need for machining brittle materials such as single crystals, glasses and. Ppt laser beam machining lbm powerpoint presentation. The use of ultrasonic for machining processes of hard and brittle. Download nontraditional manufacturing processes by gary f. It also includes micronanofinishing processes viz, abrasive flow finishing, magnetic abrasive finishing, etc. It yields low scrap, almost automatic operation, low overall machining time, and reduced inventory expenses. The torch produces a highvelocity jet of hightemperature ionized gas called plasma that cuts by melting and. Mechanism analysis of ultrasonic machining based on finite. It is also known as ultrasonic impact grinding is an operation that involves a vibrating tool fluctuating the ultrasonic frequencies in order to remove. Ultrasonic machining introduction ultrasonic machining is a.
Nptel video lecture topics for mechanical engineering new no. Ultrasonic machining usm is a nontraditional mechanical machining process and can be used in many applications. 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. Burr free holes and slots in hard, brittle materials. Unit ii mechanical energy based processes 10 abrasive jet machining water jet machining abrasive water jet machining ultrasonic machining. Part 2 deals with thermal machining processes for example, electric discharge machining, laser beam machining, electron beam machining, etc. Hot sale 500w mini ultrasonic spot welding machine, hand held spot welder duration. Smart material, adaptive structures and intelligent mechanical systems iitk. Ultrasonic machining from the technology data exchange linked to trusted tde listed vendors.
Wallace says the typical use of this machine would be conventional metalcutting most of the time, with the ultrasonic head loaded into the spindle for the parts and operations benefitting most from this capability. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Manufacturing processes i nptel online videos, courses. An introduction to ndt common methods 5 this process is called accommodation and gives us very fast continuous focusing. Jun 03, 2014 principle of ultrasonic machining 1 this is the standard mechanism used in most of the universal ultrasonic machines 632014 hareesha n g, dept of aero engg, dsce 11 12.
All aspects of mechanical, electrochemical and thermal processes are comprehensively covered. Ultrasonic machining is a nontraditional process, in which abrasives contained in a slurry are driven. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Applied and computationalmechanics4 2010 7988 ultrasonic horn design for ultrasonic machining technologies m. Unlike other nontraditional processes such as laser. Introduction plasmaarc machining pam employs a highvelocity jet of hightemperature gas to melt and displace material in its path. Ultrasonic machining usm is the removal of material by the abrading action of gritloaded liquid slurry circulating between the workpiece and a. Ultrasonic horn design for ultrasonic machining technologies. Ultrasonic machining, water jet machining, abrasive water jet machining. In order to meet these challenges, a number of newer material.
It includes detailed information to gain insight into the manufacturing processes. Machined surfaces are stress and burr free having good surface finish 5. Ultrasonic machining usm and waterjet machining wjm are typical examples of. The overall investment of underground machine hall is less than those of the superstructure of a surface power house of similar dimensions. Wallace says the typical use of this machine would be conventional metalcutting most of the. Material removal processes machining is the broad term used to describe removal of material from a workpiece includes cutting, abrasive processes grinding, advanced machining. Jain coordinating institute iit kanpur subtitles available unavailable lecture lecture lecture lecture lecture lecture lecture lecture lecture. It is employed to machine hard and brittle materials both electrically conductive and. Ultrasonic machining, or strictly speaking the ultrasonic vibration machining, is a subtraction manufacturing process that removes material from the surface of a part through high. The most important is labelled ultrasonic machining, by which is meant conventional ultrasonic machining, that is, the use of hammeraction tools with abrasive for cutting brittle materials. In the paper, the material structure deformation under abrasive. The ultrasonic machining center is also a fully capable conventional machining center.
Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Usm is a versatile machining process as far as properties of materials are concerned. Basic mechanical engineering covers a wide range of topics and engineering concepts that are required to be learnt as in any undergraduate engineering course. Material removal processes machining is the broad term used to describe removal of material from a workpiece includes cutting, abrasive processes grinding, advanced machining processes electrical, chemical, thermal, hydrodynamic, lasers automation began when lathes were introduced in 1700s.
Mechanical machining ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes. Material removal processes categories of machining cutting involve single or multipoint cutting tools and processes turning, boring, drilling, tapping, milling. Advanced machining processes video course course outline there is a need for machine tools and processes which can accurately and easily machine the most difficultto machine materials and workpieces with intricate and accurate shapes. Nptel video lecture topic list created by linuxpert systems, chennai nptel video course mechanical engineering advanced machining processes subject coordinator prof.
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