Prime Time: Making a Differential for a Gear Hobbing Machine.

Further progress on the home shop gear hobbing machine based on a vintage horizontal universal milling machine.
Some visuals, and explanations. Math later.
References:
“Gears and Gear Making”, by Ivan Law
#LSCAD, good source materials and tech explanations from the University of Bayreuth. Those Germans!

[@mikemakuh5319]

Only a couple of years into cutting gears, but they sure do fascinate me too!

[@lukeamato423]

I'm truly impressed

[@joeg679]

Runs like a swiss watch. Amazing work.

[@thomasstover6272]

Thank you very much!

[@user-lm9pu3sq9d]

very cool, thanks

[@FCleff]

Congratulations on your design. That is stunningly beautiful work! I'm eager to see the next video and learn more about the "math" behind it all. Cheers,
F.C.

[@thomasstover6272]

Thanks for the kind words! I hope you enjoy the other videos!

[@sky173]

More amazing work. Always a pleasure to see your new content. I can see this channel exploding with subscribers. Keep them coming!

[@thomasstover6272]

Thanks very kindly!

[@johnhowell2339]

Wow, What a great set up. I am looking forward to the math on this. I have been following LSCAD for a while, but have not seem him address this problem. This was the one area I had not found any good info on, but it looks like you will provide it. By the way, you are a super machinist. Thank you so much for these high value videos.

[@thomasstover6272]

Thanks for the feedback! Math coming up soon!

[@thomasstover6272]

Hi, John! The math is available now.

[@nickj2508]

Excellent craftmanship. Thank you for sharing. 👍👍

[@thomasstover6272]

Thank you very much!

[@seanbosse]

Really, really, really impressive. Beautiful work.

[@thomasstover6272]

Thanks! I appreciate the feedback…

[@crazymtbrider]

Some of the most beautiful engineering work on TH-cam, gears have always puzzled me I'm all self taught so maybe one day I'll give it a go - again fantastic work👍

[@thomasstover6272]

Thanks for the very kind words! I’m self-taught, too, unless you count lots of TH-cam…

[@garychaplin9861]

I have a gear project I want to get started soon, your beautiful work is inspirational I look forward to the math. More in depth explanations please.

[@thomasstover6272]

Coming soon. I’ll do my best to answer questions from the comments…

[@andrewyoung900]

Really impressive work - thanks for sharing.

[@thomasstover6272]

Thanks!

[@peternedsmith]

very impressive, beautiful piece of work,

[@thomasstover6272]

Thank you very much!

[@rodneykiemele4721]

That was truly fantastic ! Thank you so much for sharing. You hooked me, I’m subscribed

[@thomasstover6272]

Thanks! Hope you enjoy it!

[@cliffcampbell8827]

You seem to be the right person to ask this question about gears...why are some meshing gears noisy where as others are very quiet (i.e. your gears)? I didn't see any lubricating fluid being worked thru the gear teeth in this video so I know lubricant isn't the reason. Is it the material the gears are made of? Is it the revolutions per minute? Is it the shape of the gear teeth? Is it the amount of backlash or clearance between the meshing teeth? I'm curious because my 1/10 scale radio controlled 6X6 off road/crawler truck has 2 electric motors with very small gears driving one big gear on the transmission and there is a fair bit of noise at those points (the 2 little on 1 big gear) and I was wondering how I might reduce that noise if at all possible.

[@thomasstover6272]

I’m not really that deep into gear theory yet, but I know that running tight generates tooth noise, and running loose is quieter, but too loose results in meshing errors and impacts that are noise generators. If your gears are molded plastic, there might be profile errors. I imagine that your system might have at least 1 deep reduction (single stage small gear to large gear, maybe 8 or 10:1) I try to avoid speed changes over 3:1, which may not be practical for you.

[@russellfernandes9607]

Great work 👍🏻

[@thomasstover6272]

Thanks ✌️

[@peters9929]

So beautiful, should be on a high profile business mans desk for all to admire.

[@Zzeke]

1.21 Jigawatts! What was I thinking?! (Doc from back to the future). When I watched it run, it totally reminded me of all his Rube Goldberg mechanisms very nice work sir

[@thomasstover6272]

Love the references! Thanks!

[@nhlakaniphombatha5769]

Really really like your vids 👍👍you a good engineer 🙏

[@thomasstover6272]

Glad you like them!

[@duckslayer11000]

This makes my best work look like a caveman with a stick made it. Pure Craftsmanship.

[@thomasstover6272]

Thanks for your very kind words. Put a big smile on my face!

[@MIKY1973]

Marvelous!!! 😎👍🏼

[@thomasstover6272]

Thank you! 👍

[@Euronasa]

A marvel! Like clockwork!🤗👍

[@thomasstover6272]

You are too kind! Thanks!

[@Imagineering100]

Beautifull

[@jerrypeal653]

Skills !

[@Zzeke]

Wow!

[@MohamedAdel-hw6yn]

Can you send me written books on the number of teeth or a design that explains the number of teeth and all the gears that I need in manufacturing from A to Z until the success and structure of the design of the hoop machine?

[@huckstirred7112]

what is the widest spur gear you can cut?

[@thomasstover6272]

I’m sure there is a practical limit somewhere, but I don’t know what it is yet. I’ve cut gears up to 1.5 in wide, but that’s limited by the arbor length…which I could make longer.

[@nicolasaudouard8956]

Analog CAD😝

[@timstover7923]

First

[@Canajaf]

🤥

[@GemmyHeart]

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