In order to meet these challenges, a number of newer material. Ultrasonic machining is a contemporary manufacturing method usually employed for processing materials with higher hardnessbrittleness such as quartz, semiconductor materials, ceramics. Chemical machining is the material removal process for the production of desired shapes and dimensions. Ultrasonic machining usm is the removal of material by the abrading action of gritloaded liquid slurry circulating between the workpiece and a. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. It includes detailed information to gain insight into the manufacturing processes. Ultrasonic technology poised for advance into general machining. Singh, balbir singh modern machining processes presents unconventional machining methods which are gradually commercial acceptance. Unlike other nontraditional processes such as laser beam, and electrical discharge machining, etc. Smart material, adaptive structures and intelligent mechanical systems iitk.
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. Miyan ram 1709653 1 introduction ultrasonic machining usm is the removal of hard and brittle materials using an axially oscillating tool at. Chemical machining working principle, application, advantages. Chemical machining for some special purposes can also be achieved by using a jet of reactive gas, e. Machined surfaces are stress and burr free having good surface finish 5.
In the paper, the material structure deformation under abrasive. 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. Ultrasonic machining is a nontraditional process, in which abrasives contained in a slurry are driven. Introduction to nontraditional machining iit kanpur. Basic mechanical engineering covers a wide range of topics and engineering concepts that are required to be learnt as in any undergraduate engineering course.
Ultrasonic machining usm and waterjet machining wjm are typical examples of. Singh, balbir singh modern machining processes presents unconventional machining methods which are gradually. 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. This is known as gaseous chemical machining or hot chlorine machining and can be used for deburring of metal parts. Material removal processes categories of machining cutting involve single or multipoint cutting tools and processes turning, boring, drilling, tapping, milling. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Mechanism analysis of ultrasonic machining based on finite. An introduction to ndt common methods 5 this process is called accommodation and gives us very fast continuous focusing. All aspects of mechanical, electrochemical and thermal processes are comprehensively covered. 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. 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. 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. Download nontraditional manufacturing processes by gary f.
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. Mechanical machining ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes. Ultrasonic machining introduction ultrasonic machining is a nontraditionalmechanical means of uniform stock materialremoval processit is applicable to both. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. 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. Nptel video lecture topics for mechanical engineering new no.
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. The ultrasonic machining center is also a fully capable conventional machining center. Chemical milling sometimes called chem milling or contour machining or etching. Even the more sophisticated methods require a visual test to be performed.
Manufacturing processes i nptel online videos, courses. 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. 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.
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. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. Schematic of ultrasonic machine tool usm is primarily targeted for the machining of hard and brittle materials dielectric or. Introduction plasmaarc machining pam employs a highvelocity jet of hightemperature gas to melt and displace material in its path. Apr 15, 20 ultrasonic machining introduction ultrasonic machining is a nontraditionalmechanical means of uniform stock materialremoval processit is applicable to both conductive andnonconductive materials. Paul,department of mechanical engineering, iit kharagpur. Ultrasonic machining is of particular interest for the cutting of nonconductive, brittle workpiece materials such as engineering ceramics. Applied and computationalmechanics4 2010 7988 ultrasonic horn design for ultrasonic machining technologies m. Jain coordinating institute iit kanpur subtitles available unavailable lecture lecture lecture lecture lecture lecture lecture lecture lecture. Ultrasonic horn design for ultrasonic machining technologies. 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. The machined surface produced by ultrasonic machining is found to be free from any surface defects heat affected zone, cracks, recast layer, etc. Parts are burr free with no residual stresses or thermal effects.
In the paper, the material structure deformation under abrasive impacting is simulated by the lsdyna3d software, and the stresses occurring are analyzed numerically. 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 offers a solution to the expanding need for machining brittle materials such as single crystals, glasses and. Ultrasonic machining introduction ultrasonic machining is a. Unit ii mechanical energy based processes 10 abrasive jet machining water jet machining abrasive water jet machining ultrasonic machining. References module 9 nonconventional machining iit kharagpur. It is done by selective or overall removal of material by a controlled chemical. The overall investment of underground machine hall is less than those of the superstructure of a surface power house of similar dimensions. Hot sale 500w mini ultrasonic spot welding machine, hand held spot welder duration.
Particularly suited for very hard andorbrittle materials such asgraphite, glass, carbide, and ceramics. It yields low scrap, almost automatic operation, low overall machining time, and reduced inventory expenses. Ultrasonic machining usm is a nontraditional mechanical machining process and can be used in many applications. Ultrasonic technology poised for advance into general. Wallace says the typical use of this machine would be conventional metalcutting most of the.
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. Ultrasonic machining, water jet machining, abrasive water jet machining. Usm is a versatile machining process as far as properties of materials are concerned. Ultrasonic machining from the technology data exchange linked to trusted tde listed vendors. Study of parameters of ultrasonic machining ethesis. The ultrasonic vibrations are transmitted directly on cutting tools, respectively directly to a cutting process. Material removal processes machining is the broad term used to describe removal of material from a workpiece includes cutting, abrasive processes grinding, advanced machining. 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. Ultrasonic machining,direct impact,abrasive grains,material removal rate. It is employed to machine hard and brittle materials both electrically conductive and. Part 2 deals with thermal machining processes for example, electric discharge machining, laser beam machining, electron beam machining, etc. The torch produces a highvelocity jet of hightemperature ionized gas called plasma that cuts by melting and.
There is no thermal damage and burr free surface can be produced. Ppt laser beam machining lbm powerpoint presentation. Pdf nontraditional manufacturing processes by gary f. Plasma arc machining process, diagram, advantages and. Unconventional machining process need classification brief overview. Machining a material removal process in which a sharp cutting tool is used to mechanically cut away material so that the desired part geometry remains most common application. Ultrasonic machining is a mechanical type nontraditional machining process. A comparative study on ultrasonic machining of hard and. 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. Nptel video lecture topic list created by linuxpert systems, chennai nptel video course mechanical engineering advanced machining processes subject coordinator prof.
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. Called pam, this is a method of cutting metal with a plasmaarc, or tungsten inertgasarc, torch. 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. Slicing, coining, dicing, lapping, engraving, deburring, broaching, boring and trepanning operations are also practical. Oct 22, 2008 lecture series on manufacturing processes ii by prof.
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