3D Printed Change Gears In A Heavy Duty Lathe?

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In this video I show you how I 3D printed a missing change gear for my 14x40 Takisawa metal lathe. Plastic change gears are nothing new on smaller machines, but on machine this large I was skeptical as to wether or not they would hold up. To my surprise, they work great! Check out www.rushgears.com fo this handy 3d gear generator!
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Опубликовано:

8 сен 2024

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Комментарии : 94

@MyLilMule 3 года назад

I enjoyed the video. I, too, have used 3D printed gears temporarily. A couple points I would like to make. One, Fusion 360 has a gear maker function that does the same thing that the gear maker website does. It comes as part of 360. And Two, you only need to worry about tooth count when there is a second gear on the same shaft that is being engaged in the next gear. In this case, since the gear is directly driving the next gear, the tooth count is irrelevant. If, on the other hand, the other gear on that shaft was driving the next gear, the ratio between those two is critical. In your case, they likely called for a 95T merely because of the needed diameter. The 85T or 100T would have worked equally as well. On a side note, when you couple the 100T and the 127T gear together, that gives you the proper ratio to cut metric gears.

@EDesigns_FL 3 года назад

You did not need to make a 95T gear for the threading operation you demonstrated. The gear is being used as an idler. Any gear that filled the void between the top and bottom gear would have worked fine. The 100T that you already have would have done the job much better.

@jeremyspecce 3 года назад

Very good point, I don’t know if I would have thought about that but it makes perfect sense, especially since it’s on a moving arm, as long as diameter of the gear can engage with the other 2 gears you should be golden.

@EDesigns_FL 3 года назад

@@jimnolimit The middle gear, i.e. 95T, does not have any effect whatsoever on rotational speed of the lead screw, but it does reverse the direction of rotation. This is a very common situation on lathes for some operations. Both gears on the middle shaft would have to be engaged for them to have any effect on the ratio. The second gear in this situation is just being used as a spacer.

@jimnolimit 3 года назад

@@EDesigns_FL You are correct, that middle gear is just an idler. I deleted my original replies.

@jtcmlt1 3 года назад

Would you mind elaborating on that? Because as little as I know, it would change the rpm unless 1) you cahge the other gears to match the rpm, or 2) you adjust the speed of rotation some other way. I don't know how lathes work, but I am curious. Peace

@EDesigns_FL 3 года назад

@@jtcmlt1 The 95T gear is just transmitting power from the top gear to the bottom gear on the leadscrew. Other than changing the direction of rotation, it has absolutely no effect on speed/drive ratio. It just bridges the gap between them.

@swolebro 3 года назад

FYI, you can also go to McMaster and download 3D CAD files of most of their parts. Some will be more "artistic representations" rather than fully functional, but it's better than nothing. Credit to AvE for putting that trick in one of his vidjayeos a year or two ago.

@MakeEverything 3 года назад

I actually use that feature all the time! It’s a great way to get correct thread pitches for bolts and nuts into fusion and then you can modify them as needed!

@joshuahuman1 3 года назад

You have to be careful about that I believe in their terms and service they say your not allowed to 3d print the cad models

@grayspacelabs6616 3 года назад

absolute game changer! currently in ebay/forum hell trying to find one missing change gear for my 1967 lathe.... going to this website now and cranking out gears on my ender 3s all day!!

@noneofabove5586 3 года назад

I have printed gears for my star lathe allowing me to cut threads not on my quick change.

@jabonet Год назад

You could print an 95ngear that has a hole that matches the shape of a smaller metal gear. That way you can use the keyway of the metal one.

@markharmon6392 Год назад

Yep Especially since he said he somehow got two of the same gear in one size. Use the extra as a carrier for another larger size.

@cavemaneca 3 года назад

I agree with having a 3D printer around the shop even just for useful things like this. An alternative material worth looking into would be PETG if you can, or even Nylon.

@0hypnotoad0 Год назад

Annealed* PLA smokes just about every other printable thermoplastic available, just anneal finishes gears in sand and they'll become way stronger. PLA is just such a cheap and easy to print filament, IMO its well worth it to anneal it and then have it outperform nylon.

@jimnolimit 3 года назад

Good video. Thanks for sharing your experiment. I am a big fan of PETG for gears. In my experience, PETG tends to yield quite a bit before failure, PLA tends to fail abruptly. I'm glad everything worked out.

@jeffersonsharp2292 8 месяцев назад

Another idea would be to use a smaller steel gear as a hub. Just print your larger gear with a pocket in the middle for the smaller steel gear. The teeth interfacing with the plastic would be way stronger than the keyway, and it would take a whole lot less plastic and time to print.

@19672701 3 года назад

I've printed gears for my atlas 12,it works well, I printed mine in ABS which was hard for my printer but,got through it. The gear generator is a great tool I didn't know of. I'll be printing gears to slow the feed speeds next.

@KTX666 3 года назад

You know... That gear you just made, that probably took forever to print... Yeah, that's not actually needed 😉 it's just an idler gear to take up the space in between the two gears... You could have used any one of the other gears you already had, as long as they would "bridge the gap" between the two gears... But it was a good demonstration of something a 3D printer might actually be useful for 👍

@SaltNBattery 3 года назад

I love this.. He just does things, he doesn't really understand or even try to learn enough, just the bare minimum to do the thing he wants to do.

@christopherenoch4230 3 года назад

I've always said, every house needs a 3D printer (or 5). PC would have been a more durable filament... But hey, PLA got you through your immediate need. Prusa will have a extremely strong PC/carbon fiber filament out sometime in June. And it will be easy to print with, unlike normal PC. PETG is another filament that is less brittle than PLA.

@micro963 3 года назад

Thank you for sharing, great video👍👍👍

@mp-xt2rg 4 месяца назад

Fusion has a gear tool that just spits out whatever you want. It's super easy.

@SluSharkND 3 года назад

Outstanding problem solving and sharing.

@MakeEverything 3 года назад

Thanks for watching!

@keithw372 3 года назад

i think mr pete printed gears for one of his lathes also

@MakeEverything 3 года назад

He did! I wound up finding that video after I got this going. It’s really awesome for people with antique or obscure lathes, I was really surprised how well it worked in something as large as this 14x40

@billhatcher2984 3 года назад

If you had used a little bit of lube it prob won't happen again oil works miracles

@billclark5943 3 года назад

I've been meaning to do this for a missing gear on my old Atlas 3950. Nylon should last forever

@protect.your.digits.creations 3 года назад

I read the other comments below and I enjoyed the video and even if I never use it I learned from it . Stay well Chris

@BillyTpower 3 года назад

gears too close (tight) together. use a piece of printer paper in between the meshed gears to set proper backlash

@colinstu 3 года назад

Hopefully that website doesn't take away that free feature!

@johngrace199 3 года назад

OK...that's really, really cool.

@jamesbarisitz4794 3 года назад

The Bacon Saver 3000! 👍

@Kenionatus 3 года назад

Did you check whether plastic on plastic really would have a lower coefficient of friction? Usually (at least with metals), you get a lower friction between different materials than when both surfaces are of the same material. Making all entirely out of plastic, especially partially hollow 3D prints, would also mean more play in the system, which could mess with the teeth alignment. From what I've heard, alignment and matching geometry is the most important factor for gear wear. Besides that, more flex could also impede precision or introduce vibrations. Metal wheels with added plastic teeth should suffer less from these problems than fully plastic ones, which is probably the reason the original ones are made that way.

@FCleff 3 года назад

I hate to tell ya' but the new, printed gear is only used to transmit power and reverse direction. It has absolutely nothing to do with the overall gear ratio and/or thread pitch. Any gear with the correct module (M1.5 in this case?) that can span the distance between the stud gear and the input shaft gear will work for this set up.

@Alex4296 3 года назад

Actual plastic gears for "mini lathes" (cheap import machines) are nylon so maybe using a nylon filament would help. PLA is very brittle so event petg could help with the snapping issue and it is easier to print than nylon

@stich1960 3 года назад

Abs or nylonx should do it

@rkseifert 2 года назад

You might want to add some grease to that gear to increase it's durability.

@garagemonkeysan 3 года назад

Very useful and interesting video. PLA is pretty strong. What infill and perimeters did you end up selecting. Mahalo for sharing! 🙂🐒

@01Tubee 3 года назад

Great video! What filament did you use?

@kenthesparky178 3 года назад

Very interesting video.

@MakeEverything 3 года назад

Thanks for watching!

@shed_7245 3 года назад

Great video as always

@Rouverius 3 года назад

Try Fusion 360. Pretty sure there is a few helpful plug-ins to get you mostly the way there

@cynstan 10 месяцев назад

used CF nylon (15-20% CF)

@methane101 3 года назад

We have a lathe at our shop. That went down. Only problem is it's the auto feed geers. Looking for a cheaper way to replace. I will have to look into the information you provided. Thanks. And love watching your content!

@MakeEverything 3 года назад

I’d definitely check out that rush gears website, even if you can’t 3D print maybe they can help you get the right stuff made in metal! They saved me on this one!

@Liqudus 2 года назад

Hey man, thanks for the explanation on how to read that chart. I have the same lathe and was wondering how you figured out you needed the 65 tooth to cut 13 tpi?

@seansysig 3 года назад

Chris, elegant solution to a common problem. I have a Eastwood 7x12 mini lathe. How long did it take to print? Also is there a strong filament you could have used?

@MakeEverything 3 года назад

This gear was pretty big took about 14 hours to print. I’m still learning on ways to optimize and speed up 3D printing so I’m sure there’s a faster way. The PLA seemed to be good, but I’m reading here in the comments there may be a stronger option. Good luck!

@MaxPower_Designs 3 года назад

PETG is stronger than PLA and if you want stronger parts I often print with carbon fiber reinforced PETG filament. Like Carbon-X. The only thing with carbon fibre filament it is very abrasive and you need to check the wear on your nozzles and feed gears.

@russtik6140 3 года назад

do you have a small X,Y difference/distortion in your printer? that gear looked a bit eliptical.

@AnthonyCurreri 3 года назад

Now you need a 3D printer that prints in metal.......

@MakeEverything 3 года назад

Those things are amazing! One day we will all have one!

@AnthonyCurreri 3 года назад

@@MakeEverything I have to ask.... Know anyone who grew up in Elmont Long Island? I went to school with someone with the same last name.

@MakeEverything 3 года назад

@@AnthonyCurreri I don’t, but probably a cousin of my Dads! There are a few Zeppieri’s around Long Island! I am originally from East Rockaway and my Dad had lived in New Hyde Park

@AnthonyCurreri 3 года назад

@@MakeEverything very cool. I grew up in Elmont then moved a bunch of times all around Long Island. Now I'm in Orlando since 2003. Love your vids.

@stich1960 3 года назад

* nylonx

@XXXXIndices 6 месяцев назад

Maybe you did not realise this but it does not matter how many teeth are on that gear. It does not have any effect on the ratio. Here is really good video that explains it in detail. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-KbwM-cOx1c0.html I have an old lathe with missing gears which is why I watched the video, I wonder if the 3d printed gears would handle driving another gear via the keyway.

@idealcars9484 3 года назад

I don't know who needs to hear this but stop saving all your money. Invest some of it if you want financial freedom.

@idealcars9484 3 года назад

Invest in Crypto, gold, silver, buy stock, forex market. Anything! Just invest and save yourself.

@naomiyoder4671 3 года назад

Good talk! I tell that to my friends everyday. Saving is good investing is much better, I used to think saving money would save me but NO, saving is just keeping it to spend later.