He missed few important topics. Base circle and Backlash A) Backlash. It is a clearance provided between two messing teeth in order to avoid Jamming generally due to thermal expansion and also provide space for lubricating oil. *How it is different than clearance?* Well Backlash is a difference between tooth space of Gear 1 and Tooth thickness of Gear 2. Were clearance is difference of Deddendum and Addendum. I hope it clear you the difference. 2) Base circle. It is a circle through which line of action or line normal to the Tooth face or pressure line ( whatever they call it) passes tangentially. It is used to draw Involute gear. Above Base circle you have Involute profile and Below Base circle it is not.
THANK YOU, FOR THIS GREAT INTRODUCTION TO GEAR TOOTH TERMINOLOGY, AND, PARAMETERS. I'D LIKE TO KNOW HOW TO "SELECT" COMPATABLE SMALL PLASTIC GEARS"... BY THEIR BASIC "MODULE" VARIABLES,... AND WHO ARE THE BEST "SUPPLIERS/MANUFACTURERS" OF THEM?...
Who says ss rattan is best & simple book ? It has used complicated English throughout , only chapter 1 - mechanisms & machines , is given in a somewhat easy language - as an introductory chapter , rest all hi-fi english words are used. It is difficult to understand cams & gears only from SS RATTAN book without relying on external help. This video has been presented in a very easy manner for explaining the gear terminology. Thanks sir
Explained in a good way - but there are some mismatchings in the figure & the definitions written- e.g. - Just check for face what is shown in the figure & what definition is written .. ( it is written as below the pitch surface but it is actually above the pitch surface in the diagram )
Okay then there must be 2 pitch points for 2 pitch circles....no wait there must be multiple pitch points because gear is not in contact at one point. Even first and last points on line of action are contact point, so can these points be considered as pitch points...No?
aslamoalikum sir i want to ask that i want to make a rack with pinion gear i want to do work in meters and please tell me how many teeth required in 10cm. and its must eevry teeth size in one millimeters or not or can i make a teeth 4 milimeter.
Hi Sir, I am shubham kulkarni ,I am studying in 3 rd year mechanical engineering . I am working also in MNC. Your video is very helpful for me . I request you can you please explain some more video for helical gear , spiral gear ,worm and worm gear , bevel gear force analysis derivation . ?? I hope you will fullfill my requirements. Thanks for explanation. I used all ur videos for study Can I get ur mobile number Thanks regards Shubham kulkarni
Shubham sir My self kushal jain Me abhi mechanical engineering me admission le raha hu through mht cet CAP round Sir mujhe aap se guidance chaiya Aap ka no. Mil sakta h Whatsapp kar ne ke liye Plz sir
We have a line contact not a point contact ! It's wrong to say that we have a point contact between two gears ! unless and until the gear have no face width! And that is not possible in practical life!
I'm sure the instructor said "point contact" from 2D perspective. I extrapolated the point contact into a line contact while thinking about how gears have a width in reality
The contact is not at a point but along a line. Moreover, I only gained a superficial understanding of some terms. I suggest adding more robust explanations for later videos. Like that your English is decent and understandable. The presentation on the board is good too. Would have loved it if the content gave me better than just a working understanding.
Hello sir, you have some false concepts/definitions read this.. 1.you say once there is point contact in gear mesh. That should be correct the contact is line contact. 2. This is worst one..you say about pitch circle it is the locus of point of contact.plz read it properly then upload..as you say after it is an imaginary circle.(answer how a physical contact locus can be an imaginary ..majak hai kya).so plz go though book then upload. 3.You also wrong hatching for the face width also check it. Thankyou
