Elements of mechanical engineering notes pdf download b. Gear design national broach and machine division,of lear siegler, inc. Kinematics of machines nptel pdf nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online module 1 lecture 1 kinematics of machines. This chapter will explore the theory of gear tooth action and the design. The spur rack is a portion of a spur gear with an infinite radius. Download nptel video lectures mp4 flv without going. Blogging about nptel, digimat digital learning platform, nix operating systems and freeopen source software. Theory of machine study notes hand written tom free.
Gear train, internal and epicyclic gearing infocobuild. Gears is a positive drive which transmits exact velocity ratio from one shaft to another shaft, gear drive is used when the distance between driver and follower is very less, when two or more gears are made to mesh with each other to transmit power from one shaft to another, the combination is called gear trains gears. Introduction rolling cylinders the fundamental law of gearing gear tooth nomenclature gear types simple gear trains compound gear trains reverted gear trains epicyclic or planetary gear trains examples 2. Module 15 3 hr gear trains kinematics of machines nptel, compound and epicyclic gear trains. A gear train is framed by mounting gears so that gears engage. Video lesson mechanical engineering theory of machines video lecture training. Nptel material is available for free on nptel website. Mechanical vibrations nptel online videos, courses iit.
Depending upon the type and accuracy of motion desired. Mechanical engineering video lectures free downloads. Where to find made easy class notes for theory of mechanics subject. The teeth on helical gears are cut at an angle to the face of the gear. Nptel gate courses for mechanical engineering online video. Study and analyze the gear profiles and gear trains. Kinematics of machines nptel epub download nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online module 1 lecture 1 kinematics of machines. Whenever a change in the speed or torque of a rotating device is needed, a gear train or one of its cousins, the belt or chain drive mechanism, will usually be used.
Theory of machines is an applied science of the relationships between geometry and relative motion of the parts of the machine, and concerns to the forces which act on those parts. Nptel provides elearning through online web and video courses various streams. Nptel is an acronym for national programme on technology enhanced learning. A simplified another common failure of the conveyor reducer is the damage to gear teeth. Understand geometry of different gears and their dimensional pro perties. In this planetary gears sets are placed in series to provide transmission. Most of these courses consists 40 videos and 1 hour duration each. Ii lecture 36 force analysis examples lecture 37 gear kinematics lecture 38 gear trains i lecture 39 gear trains ii lecture 40 gear trains iii. Kinematics kinematics of machines nptel gears and gear trains kinematics of machines nptel is decided that the topics on dynamics listed above i to v will be. Elements of mechanical engineering pdf download free. If you are not able to download lectures due to bandwidth constraints, you can obtain the courses in dvds by paying a nominal fee to cover the cost of storage media and distribution.
We will start with most sought after computer science, electronics, electrical engineering and so. Gear design objectives understand basic principles of gearing. This channel contains technical lectures on civil engineering from seven indian institutes of technology iits and indian institute of science iisc, ban. Internal gear this is a cylindrical shaped gear but with the teeth inside the circular ring.
Converter from pp2007 to pdf as we are in and a couple of pp versions later, i dont recall if pp converts to video directly so with at least the 7 years old pp. Types of gear trains basic, formula and numerical problems. Tooth load and torque calculations in epicyclic gear trains. Nptel provides courseware in the form of video lectures and web courses. Asok kumar mallik department of mechanical engineering iit kanpur. You all must have this kind of questions in your mind. When you search for files video, music, software, documents etc, you will always find highquality nptel mechanical files recently uploaded on.
This gradual engagement makes helical gears operate much more smoothly and quietly than spur gears. Dynamic analysis of slidercrank mechanism,gear trains, fly. National programme on technology enhanced learning nptel is a project of mhrd initiated by seven indian institutes of technology bombay, delhi, kanpur, kharagpur, madras, guwahati and roorkee along with the indian institute of science, bangalore in 2003, to provide quality education to anyone interested in learning from the iits. Nptel is an acronym for national programme on technology enhanced learning which is an initiative by all seven indian institutes of technology iits and indian institute of science iisc for creating course contents in engineering and science. Design, load analysis and optimization of compound. Analysis of a gear train using finite element modelling. You can also get course completion certification for some of the courses. When two teeth on a helical gear system engage, the contact starts at one end of the tooth and gradually spreads as the gears rotate, until the two teeth are in full engagement. Some important features of gears ad gear trains are. The smallest number of teeth on a spur pinion and gear, onetoone gear ratio, which can exist without interference is np. Terms, definitions and relations compression of fibrous assemblies compression of fibrous assemblies contd.
Nptel, online courses and certification, learn for free. Nptel civil engineering video lecture online study material. Downloadmela is a educational download portal that provides interview questions,video lectures,question papers,aptitude,puzzles. Understand gear trains and how to calculate ratios. In the examination of the failures, the varying reasons or causes of failure, along with suggested remedies, are listed. This type of transmission are used by skoda,toyota, lexus, etc epicyclic gearing planetry gearing. Internal gears are often used in planetary gear systems. Transportation engineering ii nptel online videos, courses iit video lectures. Theory of machines best gate preparation videos by nptel. How to download made easy handwritten class notes for mechanical engineering branch. This is a linear shaped gear which can mesh with a spur gear with any number of teeth. Lecture 39 gear train, internal and epicyclic gearing. Gate mechanical engineering theory of machines video lecture. Distributed under creative commons attributionsharealike cc bysa.
Dynamic analysis of slidercrank mechanism,gear trains,fly. The best way to download any youtube playlist is via youtubedl command prompt utility. This video leads students through using linear algebra to model a gear train. Learn for free, pay a small fee for exam and get a certificate.
Recognize different gearing systems and relative advantages and disadvantages between them. Introduction to gear trainsintroduction to gear trains. Simple gear trains, compound gear trains for large speed reduction, epicyclic gear trains algebraic and tabular methods of finding velocity ratio of epicyclic gear trains. Home about 29 november 2008 nptelhighquality free video tutorials by profs of iits. Gear trains are widely used in all kinds of mechanisms and machines, from can openers to aircraft carriers.
Electrical, electronics and communications engineering. Tutorial and lecture video download by easy method where i am describe. Design of machinery an introduction to the synthesis and. If the mating gear has more teeth than the pinion, that is. Advertisements where to find made easy handwritten class notes for mechanical engineering branch. Nptelhighquality free video tutorials by profs of iits. Laws of gearing, kinematics and geometry partii lecture 4. Nptel mechanical engineering design of machine elements i machine design is defined as the use of scientific principles, technical information and imagination in the description of a machine or a mechanical. Our filtering technology ensures that only latest nptel mechanical files are listed. Gear teeth are designed to guarantee the pitch circles of connecting gears move on one another without slipping, this gives a smooth transmission of revolution from one gear to the next.
Nptel online certification courses since 20, through an online portal, 4, 8, or 12week online courses, typically on topics relevant to students in all years of higher education along with basic core courses in sciences and humanities with exposure to. Download nptel mechanical free shared files from downloadjoy and other worlds most popular shared hosts. This video is distributed under creative commons license cc by sa. Explain what a cam is, how it is used, and the typical types of cams identify force closed and form closed followers and explain the benefits and limitations of each describe the primary types. The content of this course shall provide the student with the basic concepts of various mechanical systems and exposes the student to a wide range of equipment and their utility in a practical situation. The number of teeth for spur gears is given by where k 1f fll1 for fulld tht th08f tbt th d ldepth teeth, 0.
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