Worm gears give very high gear ratios and thus torque. In this video I made a simple model using a bolt as a worm wheel. / maciej-nowak-962547184 / mn.projects
@@adityarane5735 As Anel Pasic said, it's vary rare to find a wheel gear that isn't brass or bronze unless it's special purpose. That is your wear gear. Normally, the wheel gear is attached to another gear that leads into further gear reduction to handle even more torque if so desired.
@@jaakkopontinen or, just dont show your fucked up bit of the gear on video that might also be the case. he made it out of brass anyways so its totally useless
@@higamerXD Not really. It's common to have a bronze ring gear. One, it will protect the motor since it will strip first, and it's a stronger gear to make out of brass compared to the pinion worm gear. Bronze is actually quite strong. Plus, it will hold oil better compared to steel.
I have done this on mills too. It is a very good method to create custom worm gear sets. You get very good engagement as well. I had to make these type of gear sets for scientific instruments. No one made the sizes and gear ratio I needed. Nice video and methods
Well done, master of machining! I would like to reply to some comments made about the accuracy of the cutting procedure. One calculates the Pitch Circle Diametre (PCD) of the threading tap to the size of gear one wants to cut also using the PCD to size the final dimension of the gear.
I have been a Tool & Die maker for over 50 years but I want to commend you on your skill and ability to make such a fine project with so little. Your methods at times scare me as far as safety goes and your fingers as holding things with your hands can lead to the loss of fingers and I have seen eyes put out in machine shops I have worked in but still I have never seen so much made with so little. ' We used to have a saying when I worked at Arizona State University in the Physics Machine Shop for 20 years before I retired. "We the willing, lead by the unknowing, are doing the impossible for the ungrateful. We have done so much for so long with so little that we are now qualified to anything with nothing at all"! You personify that statement! You Rock my friend and I say Kudos to you. What a beautiful job you did with rudimentary tools. Your ingenuity is to be admired. It takes a person with knowledge of such devices (worm and worm wheel) to appreciate what you have done. The unknowing will just look at it and see nothing. Truly, beauty is in the eyes of the beholder. The knowing will see beauty in every step. The unknowing will just stare like a deer in a headlight. Take care and keep up the good work. Maximus has spoken.
A special work! I've been working with machines for 15 years but I can still learn tricks from you. Today's technology no longer allows you to learn things. Wonderfully worked and clean. Good luck
@@Inventive101 ah, you mean hand made things. fair enough but on the other hand, there is a lot to learn with cnc/software/3D printing and new materials tech. exciting times in a different way.
Very nice! It should be said though that not all worm gears have a locked output gear. I currently have a 15:1 gear in front of me which is actually back-driveable. Just so no one builds a dangerous machine based on the information in the video.
Fantastic work mate! Looks really good, works well too. Best to have a nice tight press fit for bearings, if that's not possible then make it a sliding fit and use loctite bearing retainer (638/648) for bearing/shaft seals instead of jb-weld or generic epoxy. Also use tapered roller bearings instead of ball bearings for the bolt-drive if there's going to be high axial loads.
Tapered bearing thrust side only. Other side should be a ball bearing. If they are both tapered the off side bearing clearance will increase as the heat of operation expands the housing.
Качество изготовления потрясающее. Мне кажется, что подшипники на приводном червяке должны быть упорными, либо, как минимум, должны иметь крышки. Иначе высокий крутящий момент вырвет болт вместе с подшипниками. Еще, наверное, надо бы масляную ванну предусмотреть для смазки шестерен
this looks amazing. I do wonder just how much strain those smaller threads can take on a single side like that If it can take a few thousand pounds without deforming the threads this would be an amazingly useful bit of kit to have.
The guy most obviously knows what he's doing. I pretty sure he understands loads in respect to the application. I believe he made it more for the need of the ratio and not the output force seeing that's what he cited in text.
@@TechieTard Myself, I would have used aluminum bronze , it's really tough. And for the bearing bosses..... I was kinda hoping he was using a digital readout on the X and Y axis' of the mill....... The back lash on the threads seems a bit excessive..... say 20 thou instead of maybe 3 or 4 thou.... meaning I would have used a fly-cutter to get the bosses dead-center for proper back-lash clearances..... but then, that's just me being a fuss-budget, lol.
Следует подшипники винта устанавливать с внутренней стороны обоймы подшипника. И на винту делать ограничители для устранения продольного хождения винта. Потому как при большой нагрузке на винт он будет выходить с посадочных мест под подшипник, и даже с самим подшипником. И у данной конструкции нет возможности регулирования резьбового зазора. Но как наглядное пособие для изготовления ходоуменьшителя сойдёт. 😂
Very nice.! U know instead of jb weld like u use on ur bearings u can use medium/semi permanent or red/ permanent thread locker with thread locker u have the option to change the bearings if needed in future with a heat gun. That’s how I installed mine when I was building belt pulley ls for belt grinder and it works perfectly till this day and it’s been over a year now almost daily use.
Nice job. I have a Taiwanese Mill with a very touchy spindle quill drive, 5 deg turn of the handle is about 3th. I am at the moment making a worm wheel and worm gear for it so this video is inspiring. Thank you.
taps are a certain number of threads per inch or millimeter. As such you calculate the diameter such that the circumference is evenly divisible by the threads per inch/mm of your tap.
I really like the way you cut the thread on the gear very ingenious. I really did not like the use of epoxy instead of press fit or even snap rings to retain the bearings. But yeah pretty cool. Impressive welding also
Wow dude! I'm very impressed with your ingenuity on this project. I do have one question for you if you don't mind. Why didn't you cut the bolt support bearing housing to a .001"/.002" press fit? The epoxy works too, and i love the finished product! 10 out of 10 in my book Brother.
Hi ! The idea is good but...... The tool you used to create the teeth on the crown would have to be slightly different. As there is a height difference between the tooth head and the tooth foot, the tool would have to be modified so that the coupling between the screw and the crown was more precise. It may work, but it can't be too demanding on the system.
