GEAR CUTTING on the ATLAS LATHE pt1

You are watching part 1 of a 2 part video on how to cut a gear on the ATLAS/CRAFTSMAN lathe. I am using a shop built gear cutting attachment shown in the 6 part video series below.
ATLAS LATHE GEAR CUTTING ATTACHMENT SERIES
1. MAKING ATLAS GEAR CUTTING FIXTURE pt 1 #835 tubalcain housing
2. MAKING ATLAS GEAR CUTTING FIXTURE pt 2 #836 tubalcain guide slide
3. MAKING ATLAS GEAR CUTTING FIXTURE pt 3 #837 tubalcain guide pin
4. MAKING ATLAS GEAR CUTTING FIXTURE pt 4 #838 tubalcain index pin
5. MAKING ATLAS GEAR CUTTING FIXTURE pt 5 #839 tubalcain index shaft
6. MAKING ATLAS GEAR CUTTING FIXTURE pt 6 #840 tubalcain assembly
Thanks for viewing----please watch all 1400 of my shop videos.
Then like & subscribe & ring the bell icon.
#brown&sharpe#loganlathe#sheldonlathe#clausinglathe#millingmachine

[@orangetruckman]

For many of us that can’t afford a milling machine (money and/or space) this is great! Thank you for doing these videos Mr. Pete

[@mrpete222]

Glad you like them!

[@orangetruckman]

@@mrpete222 I swear there are time’s that I feel like I’m in a classroom with you. Sadly, that’s not the case, but it’s the next best thing. I appreciate all that you do and have done, not just us hobbyist out here but the whole machining community sir! Tho I’m not in that community, I’m sure there’s many that are and feel the same way 😬

[@tonywilson4713]

@@mrpete222 When you can can you please get your grandson or who ever helps with your videos do a playlist of making and using this gear cutter like you did with the float lock vise. I'm actually Australia but went to college in America at U. of Illinois), which I believe is near you. I think you are a national treasure and if I could I'd nominate you for one of those Presidential medals.

[@johnquinn3899]

Thanks Mr Pete, this series is one I’ve been waiting for. Lots of info and explanations about how to make the calculations. John

[@franksmodels29]

Morning coffee and watching Mr. Pete vids nothing better ☕️☕️☕️☕️☕️👍🏻

[@MyHeap]

Thank you Mr. Pete for taking the time to demonstrate the tool. I appreciate it. Joe

[@mrpete222]

👍👍

[@jimmunger8658]

When I turned on KZbin this morning this video was the first thing that popped up and I hollered HOTDOG can’t wait to see this one. Please don’t worry about the math that’s just as interesting as the rest of it. Can’t wait for part 2.

[@mrpete222]

Thanks

[@marvlinke7453]

Love your videos. I repair brass model locomotives. Occasionally I need to replace one or more gears which are difficult to find. Recently I needed a small 12 tooth pinion. Through a lot of ciphering. I determined the gear to be a 5.5 module. I made a crude cutter which worked better than I hoped. I bought a Chinese cutter to compare and see how I did. Shipping was more than the cutter :)

[@daviddauphin838]

Good morning! Great series on this tool.

[@CraigLYoung]

Thanks for sharing 👍 A great way to end this series 👏

[@weshawkins7165]

My father was a machinist in the 40’s, 50’s, 60’s and 70’s. I inherited his lathe and tooling when he passed in 83. I now know after watching your video what that tooling is he made was, it’s for cutting gears.

[@mrpete222]

👍👍

[@amosdecarmo5970]

Good morning Mr Pete. I am getting ready to cut my first gear for a micro drill press that I am making (By Pat Loop in book six of The best of projects in metal, publish by Village Press) for the quill down-feed ( Both the rack and pinion gear ) I am learning a lot by watching all your videos on gear cutting from SHOP TIPS #198 Gear Cutting on the Bridgeport Mill and including Cutting a Rack on the Bridgeport Mill TIPS #572. With out your videos I would have never attempted a project like this, THANK YOU. 🏅🙂🙂

[@mrpete222]

👍👍👍👍

[@brianmoore1164]

Ahhhh, The Engineers Black Book. Love that thing. Pretty sure it marks me as a super nerd, but I enjoy flipping through it and reading even when I don't need to look up something specific.

[@mrpete222]

Then you can count me as a nerd also

[@jamesbrown8766]

Thanks for showing the math on the gear spec. I need to make a replacement gear for an antique mandolin tuning machine, and I’ve been trying to figure out how to determine the pressure angle and other dimensions. Your brief description of the math spurred some ideas about how to reverse engineer the gear parameters. I look forward to part 2!

[@mrpete222]

No problem!👍

[@1320pass]

Mr Pete thank you. You impart great wisdom to the world. Always looking forward to anything and everything you share with us. The lessons, the stories, the candor, the tools, the humor is always enjoyable to me. 👍

[@mrpete222]

Wow, thank you

[@1320pass]

@@mrpete222 You are most welcome, sir.

[@farmerdarryl1]

Mr Pete I have taken great pleasure in watching your videos. I have a atlas 10f and have to cut back gears but no mill or milling attachment for the atlas but your videos are a delight thank you.

[@RRINTHESHOP]

I think it is going to work. Not a bad setup for the budget gear maker. 👍👍👍👍👍

[@4SafetyTraining]

As always great information and stories, thanks

[@prenticeemler7709]

Great video , enjoyed it as all ways thank you .

[@steveparker8723]

Thanks MrPete. Another interesting video.

[@MrUbiquitousTech]

Great video Mr. Pete! I enjoyed the old gear cutting videos you did, the dividing heads, the math, all of it was fascinating. I watched them more than once. In fact I think that's how I found your channel IIRC.

[@mrpete222]

Thanks 👍

[@angelramos-2005]

Excelent.Ready to go.Thank you.

[@elmarqo_3448]

That diamond shaped cutter throws a nice chip.

[@donaldnaymon3270]

Great video. Nice fixture for gear cutting. Great info. Thank you for sharing.

[@mrpete222]

Thanks for watching!

[@Ammoniummetavanadate]

I have seen guys add shim stock covers onto their Jaws for stuff like this, drill and tap a small machine screw to hold it on the face, bed over to the inside. Seems like a solid upgrade.

[@johnchristiansen1623]

Hello Mrpete222. Just made my day watching this interesting video. Thanks for all your effort in producing these video’s. Allways a joy to watch your video’s and not to forget your way of telling. You are my favorite teacher. :-)

[@mrpete222]

Thank you very very much for making my day

[@johncloar1692]

Thanks for the video Mr. Pete, your video are always interesting.

[@mrpete222]

Thanks

[@P61guy61]

Excellent! Thank you for posting!

[@mrpete222]

Glad you enjoyed it!

[@georgeantonaros5580]

Absolutely Fantastic Video !! All of your jigs & fixtures worked flawlessly !! Great work !! 🤗

[@mrpete222]

Thanks 👍

[@txrascal]

Excellent video as usual

[@floridaflywheelersantiquee7578]

Great video thanks for sharing

[@jimliechty2983]

A simple pin on the fixture, to insert into a pre drilled hole on the back of the gear blank, would likely look better and less work than milling a keyway if not needed.

[@ronaldcrowder404]

This is such great help as I am making the exact same gears but I have to make all the gears because I have the headstock and the house/mount for the reversing gears and banjo . I'm finding I really have to study to make this all come together because everything else about my lathe I have made . Thank you !!!

[@mrpete222]

Sounds like you have a big job in front of you, but you can do it with amazing results

[@ronaldcrowder404]

@mrpete222 by watching most of your videos is how I know I can thank you oh so much . On my scrap only budget takes me longer than most but I do have lathe where I can turn things on it . Finishing on tail stock and then there are no limits

[@roylucas1027]

What a great video. Every time I start thinking I’m pretty smart I watch a video on a subject like this. Boy, do I feel dumb again.

[@mrpete222]

😀😀

[@JourneymanRandy]

Well done. Lots of work for two little gears. Looking forward to the next video.🔧⚒🔩

[@premvps2142]

Wonderful presentation you are a good teacher every point is clear thank you

[@mrpete222]

👍👍

[@hacc220able]

Thanks for sharing

[@RR-cy5pr]

Mr Pete.... I am happy to have found you in the "dark space" of the internet... I am from germany and impressed how "easy" you can explaine and show difficult proceedings...thank you !!! (Sometimes I miss metric hints) ;-)

[@mrpete222]

Welcome aboard! Thank you for watching, I have about 1400 videos for you to watch

[@RR-cy5pr]

@@mrpete222 well I have watched quite a few... Very profound and interesting...

[@nadacommie6235]

Was that my Boston Gear book? Can't seem to find where I left mine.. Great show as usual Mr. Pete

[@debztully1339]

Love U!

[@BG-gr7fh]

Mr. Lyle, the Icon of KZbin...

[@mrpete222]

👍👍👍👍👍

[@upstate4288]

I left machining 6 years ago. Just received an atlas lathe from my father Inlaw. Now that I have a shop I can’t wait to get it up and running. I have a box full of machining tools waiting to be used.

[@mrpete222]

Awesome, I am excited for you

[@upstate4288]

@@mrpete222 Thanks, appreciate that

[@AmateurRedneckWorkshop]

OK lets cut some gear teeth. I learned how to cut gears from MrPete222 videos some years back. Thanks for the video keep on keeping on.

[@mrpete222]

😀

[@flavioBohemio66]

parabens..excelente trabalho

[@AVBros37]

For anyone who wanted to do the math in their own gear issues I just want to point out: 20.118/20 = 1.0059 1.0059 x 1.690 = 1.700 Which means you have about ten thou of wear. You can also add that ten thou back to your tooth depth: .098 + .010 = .108

[@jeremyperala839]

Why was the brown and Sharpe cutter marked .180 depth instead of .108?

[@jasond4752]

@@jeremyperala839 The pitch he calculated for the new gear was 20, the B&S cutter he showed was a 12 pitch.

[@Pretty_Lifeeee]

Nice job sar

[@steveo1006]

I note you used the14.5 pressure angle vs the 20 degree. How do you determine which to use? Perhaps you could give a brief lesson on this sometime in the future.

[@adnacraigo6590]

I want to see the cutting of the gear too. Thanks Mrr. Pete.

[@mrpete222]

Coming soon!

[@mce1919A4]

Thank you .

[@rondeak6873]

Thanks for another great video, are you going to the meet and greet at Florida flywheelers again.?

[@mrpete222]

Probably not

[@rondeak6873]

Sorry to hear that, but it was an honor to meet you and your wife at the previous events

[@PaulSteMarie]

One of these days I need to sit down and figure out where those magic numbers come from. In particular, that +2 just seems like a real hack. I think it's just the difference between the pitch diameter and the major diameter converted into the number of teeth, but i haven't proved it to my satisfaction yet.

[@CA_Rock]

I've been looking forward to this, thank you for finishing out the series with use of this gear cutting attachment. As an Atlas Craftsman lathe owner, I felt a sharp pain when you prepped the gear blanks on the Clausing instead of the Atlas! I am very curious about your diamond shaped cutting tool, is there a link to that product somewhere on one of your videos?

[@mrpete222]

Do a Google search I think and you can find the diamond holder. But if you can wait for a month or two, I will have a two or three part series on this remarkable tool that I have come true love It is nice to have two or more Lathes to use as I make videos, so I do not have to alter the set up. But I can understand that you can think of it as blasphemy. But remember, they are made by the same company.

[@mrayco]

Good morning from Lebanon, Mr Pete

[@mrpete222]

Morning!

[@mrayco]

@@mrpete222 Mr Pete morning in Lebanon Middle east

[@stevenhintz5508]

I noticed in the charts there were two different pressure angles. Are most typical gears one or the other? Great video, thanks.

[@jimliechty2983]

14-1/2 is the most common

[@DavidHerscher]

I bought a couple sets of those Chinese gear cutters. Seems they used to be made much better than they are made currently. All of mine cut a “profile” that isn’t anywhere close to anything that can even begin to approach being described as the appropriate profile for whichever gear it’s supposed to be cutting. You’re better off hand filing, it will come out much much more accurate. I ended up buying much more expensive cutters for the gears I actually needed. The Chinese sets have been thrown into the bin of scrap HSS.

[@mrpete222]

The engraving on some of these cutters is incorrect. These were made by 12 year old boys in bare feet.

[@DavidHerscher]

@@mrpete222 Yep, true indeed. Mine came all numbered incorrectly.

[@PaulSteMarie]

This Old Tony had a video a while back, where he pointed out that a lot of these Chinese gear cutters have the numbering backwards from the US standard. That might be the issue, but without seeing the cutters it's impossible to tell.

[@DavidHerscher]

@@PaulSteMarie mine are indeed numbered backwards, that is not the issue. The geometry of the cutters is the issue.

[@claudiovarnerin5795]

​@@DavidHerscherprofilo dell'evolvente . . . i migliori sono quelli della oerlikon (fresa a settori di lame) poi gleason, ingranaggi conici spirali e pfauter e liebbher per quelli cilindrici però con utensili creatore e non frese modulari 🤷‍♂️

[@xoxo2008oxox]

Could you also demonstrate how helical gears are cut? And why aren't some machines using helical instead of standard? Was it cost? Benefits vs each? Your video work is appreciated and the demonstration of the gear replacement.

[@leeroyholloway4277]

Keith Rucker at Vintage Machinery (youtube) recently made some helical gears using a horizontal mill and lead attachment. The videos are about a month back and very detailed about the process.

[@surlyogre1476]

@@leeroyholloway4277 Thanks, I was about to make the same recommendation.

[@kieranh2005]

In a video of gear cutting that I've seen the indexing blade had a crosswise notch in the centre of the blade. This allowed the machinist to turn the blade 90° and use the crest of the gear teeth as well as the root, meaning that they can double the number of teeth. ie use an 18t to get a 36t

[@mrpete222]

Awesome, I have never seen one of those

[@williamhenry8496]

The key way is a pocket for felt for oil.

[@ARIFINLATHE]

Thank s sir❤

[@jamest.5001]

It's probably a good idea to. Measure the gears before they are heavily worn, and keep the spec list , or make spares before they are worn,. In most cases we end up with the equipment because it is worn as it is, that's how my luck is anyway!!

[@bhtiii]

Hello Mr Pete I just noticed the tool cutter holder. What do you call that one and here can I get one.... Regards Ben

[@ThePaulTyrer]

I believe Mr Pete you also did a video on 3d printing a quick and easy gear.

[@mrpete222]

Yes, I did

[@67L-88]

Excellent video! The only thing I would have done differently would have been to mount both blanks together. I probably would have bolted them together then finish the blanks as one then cut the teeth. It's like buy one get one free... 😀😀

[@mrpete222]

Great point!

[@paulhunt598]

You already made my suggestion. The fixture that Lyle made looked like it would easily accommodate the gear thickness or width of 2 of his gears. Stacking them likely would require a longer key or other method of "pinning" the gear blanks together, but I suspect that the nut pressure would prove adequate. Our shop routinely stacked several gear blanks for hobbing operations. I spent 34+ years maintaining gear hobbing machinery, but I have never cut my first gear. Our shop separated skill sets. Machinists operated and maintenance technicians maintained and repaired machinery. I worked hand-in-glove with machinists and know a lot about machining, but I require a lot of hand holding as I try to become an acceptable hobby machinist. Hobbing machines and gear shaper machines combine indexing and depth of cut functions in constant motion. Individual tooth cutting as being demonstrated by Lyle opens the tooth to tooth geometry issues can-of-worms by the slightest of procedure errors. Our gear accuracy and production demands would not have allowed this tedious and potentially inaccurate process. I am enjoying seeing the process from beginning to end. I wonder about the gear blank material selection. The mild steel and free machining characteristics will help make pretty gears, but won't they wear pretty quickly? Would a pre hard material be a better choice? Lyle won't wear out his gears, but the first set wore significantly before Lyle got the machine. Someone suggested watching Keith Ruckers's video on cutting helical gears. For all that Keith does well and that he tackles high precision tasks, I feel that he is a bit of a hack. He is often very sloppy or careless and signs off with, "right on the money". I skipped his gear cutting video suspecting that I would be disappointed. I will now humbly reconsider. My gear cutting concerns are undoubtedly tempered by a career of precision spur gear manufacturing environment. Our highest accuracy demands required CNC gear tooth profile grinding following heat treat. This was followed by CNC gear inspection with traced documentation. I didn't design or build our product, but our engineers insisted that our product demanded class 12 and class 14 gears. My job was to maintain our machinery to maintain our production demands. I need a pair of bevel gears to repair a wide belt sander depth control on a hobby wood sanding machine. The OEM plastic gear is obsolete thanks to the demise of Delta. I intended to buy generic steel gears from McMaster Carr and machine the shaft dimensions to my requirements. Are bevel gears cut with the same methods and calculations as these spur gears? My repair need doesn't justify tooling up to make my own bevel gears. The experience gained might be worth the effort.

[@ellieprice363]

Good suggestion except if you mess up one gear you mess up both!

[@goldprogoldpro7809]

another very informative and interesting vid. thank you. I was thinking of buying a set of 8 cutters from "way over there" but some here are reporting they are mislabeled and poorly made. so the variables with making gears are- pressure angle, diametral pitch, and tooth count. Maybe the easiest thing to try would be to grind a single point cutter ??

[@mrpete222]

Mine are miss labeled as to the range of the numbers of teeth that can be cut with each cutter

[@goldprogoldpro7809]

@@mrpete222 Are they formed properly as far as tooth shape goes?

[@moulayhmadbahammou8416]

❤❤❤❤❤

[@silverbullet7434]

I so love to see a machinist who knows how to use a file CORRECTLY!! May so called machinists on KZbin would be flunked out of Mr Montgomery shop class.

[@mrpete222]

lol

[@bruceadler-9410]

Mr. Pete, your chinesium cutters do have the depth marked on them, but it's in millimeters. At +19:05, you can see it's marked 2.74 which is approx. .108 inches. Of course, that's not a metric cutter set and you're not using a metric lathe so marking 2.74 on the cutter is next to useless. And it's easier and more accurate to compute depth=2.157/P than to compute depth=2.74/25.4

[@mrpete222]

Thank you for noticing that, I was totally unaware and oblivious

[@bertlilley4988]

Mr. Pete, your steel gear blanks What tpe of steel do you use. Please state in your vids. Thank you.

[@mrpete222]

It was just mild steel

[@davidrichards5594]

I did a double take when you were cutting the OD. Looks like you're using an OK holder holder with something never seen anymore, a "diamond" tool configuration. Hurray for old, old tooling.....Dave

[@cjstein2000]

Remember teaching all this to 4th year apprentices. Spur gears were easy compared to teaching the cutting of helical gears and even helical bevel gears pre the use of calculators.

[@rosariojudithrojasarce686]

Aqui nosotros usamos sistema métrico no pulgadas

[@scottjones7279]

Trivia question Who designed the first gear?

[@ellieprice363]

Fred Flintstone - 😂😂😂

[@idontwantcorporateretaliat6301]

Can I pick this up on aliexpress yet?

[@mrpete222]

????

[@Blazefork]

Please take this with all due respect, but you know your getting old when the funeral home is sending you stationary.

[@bwyseymail]

"Didn't say STATIONARY to an old person" apologies to Johnny Carson.

[@mrpete222]

So that’s why they send me a calendar every year. In fact, the last calendar they sent me only display the months January through June

[@Blazefork]

@@mrpete222 Lol, I always thought it unkind when I visited someone in the nursing home and there was a calendar from a funeral home on the wall ......talk about focused advertisement.

[@componenx]

@@mrpete222 I'd begin to worry if they were sending me calendars with odd time spans, like 6 weeks.

[@jeremyperala839]

19:47 mark the Brown & Sharpe cutter is marked .180 depth, not .108 like the formula shown. Why is that?

[@tobyw9573]

There is also a section on gears in Wikipedia under "Gear"

[@mrpete222]

👍

[@Stefan_Boerjesson]

Having a good day, being in a very good mood, inspiration is flooding.. Sorry for the novel... Aha, You need gears... You have boxes of everything, almost. Don't You have a gear box? Full of gears? JOKING!!!! Interesting to see as my digitally controlled rotating table gets close and closer to be used on the mill. The maximum number of teeth is 576 000....... The resolution. Bragging? Likely.. Yes, watched most of the videos of that build, and got inspired! Time 02:15. A Bubba used machine? Must be. You don't brake teeth. Adam Booth and Keith Rucker are good dentists regarding damaged, even lost, teeth... Joking with heart! Oops, broke something up but never happend... Repairing/hiding mistakes is what makes the good work. I'm sure You practise that. Lots of gear cutters in the shop on the veteran railroad, dismissed by SKF. No problem to borrow a few, but witch ones? There are things to learn, pitch, diameter, nr of teeth..... Black book? Why? I've got Your videos! Not needed key for using the gear but for the production...... Good point! (Joking) "I was taught a hundred years ago"... Makes You 179++ years old....? Holding against You bally? Do You even have one being that fit, in shape, slim? Joking! Next part video will be watched, be sure!

[@mrpete222]

😀😀😀👍👍👍

[@jillkylemccormack2590]

My father watches your videos all the time. He is 81 years old and working on a project where he is cutting gears. He has questions, but I do not know how to help him. Can he reach out to you for help or can you share contact info for someone who can help?

[@kensherwin4544]

A comment in favor of overkilling: A problem that has been underkilled has the unfortunate habit of waking up and biting you where you don't want bitten, probably at the worst possible time. Overkilling sometimes prevents those teeth marks. Not always but often enough to be worth doing.

[@mrpete222]

Yes

[@WillemvanLonden]

Mr. Pete, did I see you reach over the headstock to file? That's a no no, Sir.

[@mrpete222]

I knew that people would say that. I will not ever show filing on the lathe again people hate that.

[@llapmsp]

@@mrpete222 Right or wrong, that was the way I was taught when I had my shop training by a master machinist.

[@DominickCascianoIII]

@@mrpete222 it's easy to throw stones, carry on sir

[@componenx]

That's the proper way to do it, unless you're wearing long, loose sleeves, a tie, long flowing hair and lots of jewelry.

[@dicksargent3582]

I understand all your complaints about the" chineseum " cutters but that's the price you pay ( or not pay ) for getting them for next to nothing compared to USA made.

[@mrpete222]

True

[@bradyoung6663]

It makes you wonder if some of these younger folks can even design a part without a CAD/CAM program. Always learn the math.

[@iyangsentosa7707]

Can I have your book?

[@libertyforamericanow]

The math hurts my head. Ill never become a true machinist

[@user-dp9gj9em8j]

ПЛОХО, ЧТО НЕ ЗНАЮ АНГЛИЦКИЙ...

[@bigbothoee8617]

Hahahahaha chinesium