Totally agree with your positive comment. This is a creative mechanical man in a very remote part of the world. No CNC machines in his, no air condition, dirt floor workshop. A guru in his world of daily mechanical problem solving!
You got that right. As a mobile field mechanic we get things back to work fast! preferably yesterday. Things like this might last till the new ones arrive.
Я тебе скажу больше, все негативные комментарии написаны глупыми людьми. Им нужен умный станок, поскольку своих мозгов нет. Пишут что такая шестерня имеет неправильную форму зубца. Хотя за форму зубца отвечает резец, который выточен автором именно так, как ему надо. Уверен что автор может при необходимости поставить резец любой формы.
Unfortunately the negative comments are well deserved. There was no attempt to grind a proper shaped gear cutter. A simple V shaped cutter is a waste of time. Even with basic tools, with only a moderate amount of effort it is possible to grind a better shape than the one used.
Sad see so many negative comments… This man is doing the best he can and doing a good job. Everyone can be a machinist in a workshop where all the tools and materials are…. Only a few real good machinist can do a good job with only a few tools available 😀.
You will note that the cutter forming the tooth spaces is straight sided. Gears, worm wheels and similar forms generated from a straight toothed rack are involute curves. Amateurs approximate them with a calculated radius. This example will produce a very noisy running gear, suitable perhaps for low speed, and would damage any correctly formed gear that it mates with. Assuming it is the same size (diameter, pitch) as the gear used to index, it would have been better if the cutter had been ground to match the shape of its tooth space.
@@10p56 "Top tier work in that hood." I agree. So he may be a "genius"... in that hood. Also, anyone "in that hood" with a soldering iron is automatically an electrical "genius".
@@CraftAero Perhaps you might consider posting some videos of your own brilliance at work. If they're only half as good as your pompously inflated ego then the world is in for an incredible display of a true master genius at work. We eagerly wait in awe!
@@timrussell1559 Cool your jets bro. I've spent 40yrs as a Tool & Die maker, then Engineer in the Aerospace/Defence industry and hold several patents. My handle might be a clue. Photography/video, even discussing the particulars of my output is strictly forbidden.
You know the good thing is we can make the indexing jig for our machine shop. Great idea to use the lathe as a horizontal mill, it's good to use machines that you already have, instead of buying a lot of extra equipment.
Not to mention that most gears could be used for a variety of indexing applications by dividing the teeth. For example, a 24-tooth gear could be used to index 24, 12, 8, 6, 4, 3, and 2 evenly spaced positions. Might be a good application of an old set of change gears for a junk lathe.
This is a very intelligent comment about a man in a very destitute part of the world making do with the tools he has to solve mechanical problems without the CNC computer equipment that all of you engineers have in your A/C shops.
Having run a gearcutting machine shop, I can tell you that there is much more involved in producing gears than this. What this chap is doing is improvising which is ingenious, but he will never produce gears that properly mesh and last a long time. There’s not many engineers that have done gearcutting, it tends to be a specialised field.
That's 100% true....Even sharpening a Hob must be done extremely precisely so the profile of the tooth will create the correct profile on the gear. This is really just a gear that "will work" however far from ideal and it's life will be much shorter. I'm a Tool & Die Maker but have also done Tool & Cutter grinding and Gear Cutting. Precision in Gear cutting is out of this world!
It's a well-known technique if you need to occasionally make gear but don't have access to the milling machine with proper divider attachment. My dad did this when I was a kid. He was using a proper involute cutter instead. With an improperly shaped cutter like in this video, the gear would be noisy and suitable only for low speed. It's not a big deal to make a proper cutter though.
@@ironmike742 It's a matter of sharpening the tool. It's 10mins work providing that you know you need it :) This guy does not know that the shape should be different than trapezoidal.
No negative comments here. This is a very ingenious way to cut a gear, let's give the guy credit. There are many ways to get the job done, including: wire, water jet, vertical cnc, dividing head on a manual mill and so on.
It went on tight, my guess is that it was hammered loose off camera and the film resumed right when it was pulled off easily by hand. The bottom was not shown I am guessing to hide the hammer marks.
I like how these video's promote "genius", and you never see a work bench and they always seem to be working on the floor. they make dandy gears and such, but can't build a work bench.
Больше всего поражает то, что у парней есть индикатор и они знают как им пользоваться, но упорно обкатывают под проволочку. Поперечку выставил под индикатор, а державку резца как всегда. Это просто ради прикола?
Анекдот есть. Женщина приходит в магазин, вся такая накрашенная, красивая, на шпильках. Покупает банку сметаны. Оплачивает и выливает банку на кассиршу со словами: "Какая я сегодня таинственная..." Вот и у них так же.
та патрон-то пусть бьёт, но не сильно, кончик резца все равно описывает окружность, а вот если он бронзу выставит криво - все зубья раком будут, потому и обкатали
@@НиколайКрымский-б1л Коля, один хрен это модель, а не шестерня. Спинка зуба должна быть эвольвентной, прямая может быть только у шестерен примерно от сотни зубов.
First of all,I would like to appreciate this work that type of fixture has been made but there isn't any different thing.Many types of jigs and fixtures has been made like this before to remove metal. Well done!👍
And he determines the root diameter of the gear by eye? Close enough for light load, low speed application, but it will not hold up for very long. Too much play in the setup to produce any amount of accuracy.
Well, at least we see a clean lathe. But why overtightening all bolts and do the allen setscrew with the standard allenkey? Besides the already mentioned shape of the cutter, what about the condition of the “master gear”?
I assume this is a way to help out. No serious production, although the tools used do not look freshly improvised?! -better spend some time turning a proper cutter disc out of HSS and a proper arbor. And if you stick to this set-up: give the back end of the hole the cutter is held in a thread of a practical rate. Screw in an allen key screw. Make a dial with a center hole through which the allen key goes and use the handle of the allen key as the hand on the dial. (Give the dial two pairs of fingers on it’s back so it is always positioned over the arbor in the same way) After setting depth, clamp down cutter again. In this fashion you should be able to adjust cutter depth within a field of play of about 1/10 mm. Good luck with it!
Of course, he has the skill to do this gear on simple lathe. Otherwise, it would require a gear hobing machine, which in itself is a 100 years old technology.
Where there is a will there is a way, in most 3rd world countries where ready made modern tools are not available, it is amazing clever people are at inventing ways and tools.
For HIS area he did a good job. At least he used a measurement device to set the cross feed in the right angle. He did make a copy tool to make the teeth spacing the same. Compared to HIS collegues in HIS area who only measure by eye and guess he's almost a genius. The result is still a very basic, very noisy, fast wearing gear. This is probably the reason he's NOT making it out of steel. This new gear is softer than the original so it can wear itself in because the teeth shape isn't right.
Good work for a man with limited equipment. The idea is not at all new as similar methods were once standard. However, several points cause a tendency for inaccuracy. Not to mention gear sizes, pattern gear, etc. Great and not worth a damn at the same time.
Its probably a good setup for the task. I am doubtful it has a matching gear though. The common engine lathe can be used for many different applications. Milling drilling keyway cutting. It might be cumbersome but it can be done. In his next video he will have a finger missing or worse still part of the hand. PLEASE DONT SLOW DOWN THE CHUCK ROTATION by hand. U can do it a thousand time then one day it grabs your finger or hand. IF IT GRABS YOU .......MAIMED. And safety glasses. Safety 101.
Ne çok bilen var... Usta basitçe yaptı .. sende yap videosunu at.. Hele dişli için yaptığı aparat mantıklı ve harika . Hassasiyeti az olabilir lakin fikşr vermesi açısından kendisine sonsuz teşekkür ederim Hatta o aparatın kendisini yapıp satsa da para kazanır ... Teşekkürler usta
Very resourceful people in the Far East, simple gashing using an old gear to index is not that big a deal even being done on a lathe rather than a mill.
Good work but not very fine 0 to 0 replacement like CNC made - brass is soft metal - just perform same job on Stain less steel you get very best info , -
I grew up around WW2 veterans some of who who were machinists during and after the war. Those old dudes did stuff like this every day. The difference between a master button pusher and a real machinist is the real machinists can perform every miracle on a South Bend lathe except raise the dead and turn water to wine. The words "can't be done" in shops back then was an admission you have no ability to think outside the box, little to no creativity and words to wind up sweeping floors after the work was done by someone who did.
how could u get the exact depth of the tooth..bec. u have no adjustment to get the tooth depth...and one more. ..how could u get the center of the w/p before u machine..
He is aPakistani lath worker.Although organized industry have all milling and CNC facilities say mass production but he got skill from his instructor One or two jobs will be produced as requirement What is the wonder. Pakistani are tremendously skillfull even without CNC lasers Autocads
