Emco Super 11 Change gears, gearcutting and threading
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- เผยแพร่เมื่อ 13 ก.ค. 2019
- I needed to singlepoint a odd-pitch thread which the Emco could not do without additional changegears.
Beeing in a timecrunch I had to make the gears and additional parts right away instead of ordering gears.
Web:
gtwr.de/
Instagram:
/ stefan_gtwr
#practitioner_of_the_mechanical_arts - วิทยาศาสตร์และเทคโนโลยี
nice work but they leave some pitches out of the gearboxes so every now and again you can skip the job and relax. you're not supposed to make your own change gears. those charts are made up. you got really lucky.
Aren't you supposed to be making the next video I'm waiting so impatiently for? :)
@@IBWatchinUrVids This Old Tony couldn't find right gear for his camera, so he is relaxing now lol 😂
The tables are made-up, and are incomplete. It is worth taking the time to make a spreadsheet to see what pitches you can actually make. There are more ways than one to make many pitches. This can often save the trouble of changing pick-off gears, or allow you to make a pitch that you don't have the book-gears to make.
My Chinese lathe seemed to have an interestingly designed quick-change box where every single change in pitch seemed to require a swap of pick-off gears as well as changing the quick-change.
That would be my answer, if it's not in the gearbox it doesn't need to be done. Not being a geniuos tho I was wondering if a imperial setting might of covered the missing metric setting on an accident
Yeah give it to him.
I have received a mini heart attack at 5:26 I haven’t seen the small piece of paper and thought: "OH GOD NO! he`s drawing in the Tabellenbuch!!!"
Perfect addition to the Sunday afternoon coffee! Your videos should be shown in vocational school!
Unfortunately with this beautiful gear set, my last hopes are gone that you change your mind and mount an ELS III to your EMCO.
Great video!
Me too. So unlike Stefan to draw in the book :-) :-)
Anybody know what / which book Stefan is using ? Looks really good !
I second that.
EXTRA DIMENSION IT is a German book also available in English from Europa Lehrmittel. Very good and lots of condensed info: www.bookdepository.com/Mechanical-Metal-Trades-Handbook-Ulrich-Fischer/9783808519141
@@arnljotseem8794 Ohhh That's fantastic , thanks so much, my German and technical German is not too awful, but slow. So the fact that there's an English version will really help speed thing up ! Thanks so much @Arnljot Seem
Absolute perfection from start to finish, thank you for sharing.
Love watching your videos Stefan. Very informative and your a very good demonstrator. Learning from someone with your knowledge is awesome. Thanks again.
Nice job Stefan. Thanks for taking the time to show that. Good video.
Thanks for sharing Stefan, I always learn something new when I watch these videos.
Great video Stefan, I always enjoy watching your skill and expertise....
Even if though I am not a machinist I really appreciate your videos, and your attention to detail. There is something to learn from your approach to problem solving. Thanks for sharing!
It was great watching you work. Thanks for the video.
Stefan....your video production quality, discussion, demonstration, build....IS EXCELLENT.....lots of lessons within the video...thank you for your craftsmanship and sharing your TIME
Great job on your project and description. The use of such a transmission affords many different resultant ratios - and thread pitches.
Very fun to watch you work. I learn a lot just seeing how you approach things. Middle Illinois.
With the care you take, the gears you made will last a long time. Phenolic gears are use in many commercial gear boxes. Great job !
Great job. I have the same lathe which I purchased more than 30 years ago. Great lathe!
Fantastic as always!
Interesting material..
@32:43 Stefan "I might need a little relief on that tool!" Do remember the dust when cutting old phenolic circuit board years back. Lovely smell too!
glad someone else caught that tool shape shift a bit
Brought back memories making a 127 Z phenolic change gear some 30 years ago for my Australian Hercus Lathe using compound indexing head.
Excellent info regarding the layer construction of Phenolic round verses sheet strength.
@Stefan, you're a real role model. As an unqualified CNC machinist in South Africa, very few people here can help me with the finer detail of the trade. You answer all my wildest questions and give me so much advice and tips. Thank you for that.
Great video Stefan, thank you.
Also, as someone born with a genetic lung condition and having a 27% lung capacity at 30 years old I agree, looking out for your lungs is very important. Minimising exposure to dust is essential, you don't want to be in my position, trust me.
Ah, the classic few seconds of blank footage where an unseen large hammer comes out to remove stuck change gears.
*pssssst*
@32:42 Stefan realized how convenient it is to have a D-bit grinder in the workshop. Saved his bacon :-D
Great video. You make it look so easy. Thank you.
love the little adjustment to the threading tool . :)
A little Bakelite with my coffee this morning. Chevrolet used it for silent timing gear in their "Blue Flame" six for decades, and yes there may be just a smidgen of asbestos for added flavor. Got to love it when Stefan makes 40 parts for a 1/4 in of thread in under 35 minutes.
Robert Klein, same thing in Australia under the Holden badge ( A Chevrolet Company with an Aussie Coach building company name) their early Six's used these gears on the camshaft with pretty good reliability and quiet operation for many years.
Cheers from John, Australia.
Very nice Stefan! Thank you! I will apply this to my super 11 lathe .
Found your channel and subscribed through This Old Tony and so far am very impressed. I use that same material and also something called Garolite (may be a trade name) that I purchase through MSC here in the states. Use it for a lot of different things. It is also heat resistant and an excellent insulator. I build fixtures for induction braze machines so these qualities are much needed. It is rough on cutters. The material is so dense that heat stays at the surface being cut which will break down a cutting edge quickly. I use only carbide and your use of the shop vac is also correct. It is nasty stuff and the dust gets everywhere. Great job.......
Had to smile when I saw this because recently I had to make a bunch of 14.5 x 0.75 male & female threaded parts for Primus burners. Fortunately my Emso Maximat 11 came with the accessory gear set for the non-standard pitches so I didn't have to make the gears first. But - I've certainly had to in the past, with other lathes, for oddball pitches.
Anyway, nice job. Those Emco lathes are beautifully built, I don't ever plan on parting with mine. One day I'll fit a DRO though.
Enjoyed it Stefan! Thanks for sharing.
Phenolic, is an excellent material, both Linen and Paper impregnated version, "Tufnol" is the most known brand name here in the UK, "Carp" and "Whale" are their product name, but an absolute mess to machine, as you can see. We use if as a non marking clamp on chromed rod.
Always a pleasure, and education to watch Stefan.
Thanks for sharing and best regards from the UK.
Hi Stefan, very nice video, especially if you only have to look at the first 3 teeth and the last one. I have an Emco Maximat V10 lathe with the vertical milling column. It was my fathers machine that I inherited when I was 18. I am 55 now and my shop is too small so it is stored in a wooden box and I bought a "bernard" Chinese lathe that is much smaller and without a gearbox (you only do it by swapping gears which is a pain in the neck). Your video recalls the times when I made m=1 gears and the stress of doing all the repetitive work fearing not to end up with a tooth overlap. At the end of those tasks I always wanted to automate the rotary table brake and rotation at least. I am following your channel for a couple of years (excellent content) and guessed your height might be close to 170. I had to get myself into the mood to see NY CNS's video about your shop (due to its length) and was surprised that you are 203. At the end it was a very enjoyable video. I would not like to get with you on an argument about who is the next one to use a machine at your job.
G’day Stefan, nicely done as always. Cheers, Peter
you can prevent "tear out" on micarta by backing it up with pretty much anything. Most of the time I have used another piece of micarta, but alum at least .040 works quite well.
Excellent work!
Harry from Texas USA you are a Wizard Machinist I enjoy your many jobs fantastic work 👌
Thanks for the reply Stefan you must have served a very educational and skillful apprenticeship worked under some very smart journeymen or you are self taught you have an amazing mechanical skills
33:20 "That's a nice .75mm thread". It is - it's perfect and I'm glad to hear you say so. Not "That's pretty good" or "That's OK" or some such. Not only the thread, but the video - thank you.
Thanks Stefan, very interesting. I believe I've seen phenolic gears before in devices. 👍. Beautiful work as always.
My myford S7 has a phenolic tumble gear
Yes, in West Germany 1971, I discovered that my 1960 Opel Kapitan (GM company) straight 6 had helical phenolic timing gears when they failed. They simply disintegrated, and according to the parts guy, it was a common problem.
You're the man Stefan!!!
Well done Stefan! Knowledge is law. Cheers
Great video 👍 I got the manual you were talking about in previous videos it was written in German 😂 but I still use it at times. I always like the way you make things come to life 🙂:-)
Very nice. I have an EMCO 5, which has change gears only and only the metric gear set. For imperial, it uses some approximation for the 127/50, there was an imperial gear set from EMCO which I didn't have. I 3D printed the gears per EMCO table in PLA, these gears have been working fine for 2 years now. It's a much smaller lathe though.
Well done!
Thanks for the video. 👍
Very nice! I've noticed that even with dust collection after a long job working on phenolic I'll have sinus problems for a day or two.
endlich wieder Späne und gepflegte Maschinen-Unterhaltung 😁
Genau. Bin direkt süchtig nach diesen Dingern....
@@ArtOfGottiKa u r both ass holes, speak english, Stephan does, he is directing this video to english speaking people
Your a true Craftsman, your very good at what you do. It is sure a pleasure to watch your video's, I sit here watching like ET and sucking it all in.
You make it look easy!
Nicely done!
Years ago I did phonic gears. There were quite common in old textile machines, here in the states. I machining a lot of Delrin or UHMW for projects, out of sheet using a similar method.
Great job . Interesting video.
nice gears and great machining
Stefan, I cut a lot of gears and splines over the years in my old job I retired from (automotive engine and drivetrain) for replacement parts in components. These were cut primarily with gear bobbing and shaper equipment. A lot of the gears were Fellows Stub Tooth in which they used the the pitch diameter of one size and tooth height of the next smaller pitch. This would be expressed as 10/12, 8/10, 12/14 etc. What I'm getting at is is there a Module Stub Toothed for
Thanks for sharing.
I'd be interested to see how Vesconite holds up
Very nice... thank you for sharing!
The chinese mini lathe use much the same change gear set up.
Thanks.
As always fine work.
A very nice and interesting vídeo.
Congratulations from Brazil.
Eng. Nilton Polydoro
What a lovely video. Ausgezeichnet!
Thank you Stefan.
Great information regarding the phenolic material. I think I would have started with the round type and found out the hard way. As mediocre as my Chinese lathe is, it came with change gears for the two pitches I cut most. Those are .75mm and 11-1/2 TPI.
I have to make some gears for my mini lathe seeing this levees me no excuse now!!
Great stuff IMHO I serviced and ran 16 Kinoton projectors that all used various sizes of phenolic gears as large as several inches in Dia.. I would sure use it like you did. Seemed to me they "wore" much better than metal would have.
Those gears will last forever. The Emco 7,8, and 10 used phenolic gears in the head. They only went bad when you tried to shift speeds before stopping. You could retire making gears for those as they are now made from unobtainium and many ham fisted gear grinders had those smaller lathes. Great video, thanks!
always amazing with a tad of humor
Excellent work again Stefan. I am wondering what formula you use for setting the tooth depth?
Regards , Mark Presling
You have it covered, Stephan. No further comment. 👍
Very nice! Wish I could afford to upgrade from my Chinese mini lathe, but I might think about fitting some extra gears...
Thanks Stefan !
"I'm very pleased" means it's better than most of us could hope to do.
Some people have way too much fun!
Well done as always! I'm hunting for an Emco Drehmaschine on Ebay Kleinenzeigen for a while, hope I can get model 10 in a good shape :)
The 95 tooth gear is there only to transmit the rotation and bridge the gap, it has no effect in the reduction ratio. Any gear that fitted in the available space would do and probably saved you some work.
Not as fun or fast, but you can also order very cheap 10mm thick mod 1 gears in steel from the popular auction site (the 40 teeth is going for less than 5€ with postage). I've done it before because my (used) lathe was missing the change gears, only had to bore them and add the key.
Just thread 1.75mm right handed, then 1mm in reverse left handed. I swear it works!
I always hated cutting Micarta (trade name for phenolic). We used it for pump bushings and insulators for bearings in seam welders and on broken tool detector
Most entertaining and educational. Funny how the threading tool suddenly got a notch on the left side between two threading passes at 32:34
Anyone notice the drive belt on the Emco Super 11 is a flat belt?
Stepan
I don't know where you learned English but is very good.
Thanks for sharing. Your videos area always well done and interesting.
I also appreciated your hands. They are working hands.
Someone that has been there done that and has the scars. :)
Took my brain at least 2 minutes to catch up when he said "I don't have a thread pitch gauge so I'm using a nut" then he produces a thread pitch gauge like 10 seconds later. The first statement, I believe you meant a Go, No-go gauge (or something similar). If not, well I'm still confused.. hehe
Love yur content Stefan, keep up the great work.
"WARP 9 Mr. Stef!!!"
Hello. Nice video again! What is the MT4 to MT3 reduction sleeve witch you are using on the MB4?
Hey Stephan, I feel your change gear pain. My Hardinge has a 33.3 DP with a 20deg contact angle if you can believe it. Which means there’s absolutely no involute gear cutters in existence to make the 127T I am missing to be able to do metric with an inch gearbox. So I’m stuck with single point hand grind or getting fancy with the material choice on my 3d printer.
great video sir. FYI/SA, EMCO still has change gear sets for the Super 11, or they did two years ago when i realized that it was cheaper for me at the time to get the gears rather than buy the tooling needed to cut gears...they weren't cheap but worth it. had I the dividing head and the gear cutters i'd have done it myself.
any chance we mere mortal Super 11 owners can get the cut plan for the top slide guard you had laser cut???
I was watching you putting that 95 Toothed gear on and wondering how long it was going to take you to realize you needed a smaller spacer gear behind it... The anticipation near killed me!
How much running clearance did you leave between the axle and sleeve for grease? Your parts always look so perfect.
32:41 to 32:43... ninja grind on your thread cutting tool :D
It's best to use carbide or CCBN/PCD when milling or drilling in Micarta due to it being highly abrasive.
Biax! Did you buy that new?
Nice video Stefan. I like the grind for clearance on your threading cutter. I had to do a double check. wasn't that a perfect point a few seconds ago? Yep!
It might be a second cutter, kept for the purpose... :-)
Clough 42 is developing a electronic digital gearbox for his lathe. The development is near completion and has generated quiet a bit of interest among his TH-cam viewers. It's very interesting and worth checking out.
I'm surprised you didn't use your Electronic Positioner on your rotary table.
Stefan next time try Stress Proof steel you can buy it in various blank diameter sizes .🙌
Nice thread.
25:30 What's with the blackout❓
27:30 Why not use a strip of paper between the gears to help with the spacing❓
29:05 Saw that coming!
I had a 1955 Holden ( made in Australia), GM Chevrolet design. The timing gear on the camshaft was made of phenolic linen matrix. They lasted about 15,000 km (10,000 miles) before they broke. Usually on a Saturday morning, when you needed the car to take the girlfriend out in the evening. Those were the days, my friend.................
Stavros
You need that electronic leadscrew kit from Clough42!
i am building it for sure
or an ELS III from Rocketronics. Thats an excellent device with really handy features.
@@surmetall5596 While it's a nice product, they luck a bit in presentation, nor engilsh instruction (couldn't find by browsing their site)
@@takisbakalis Absolutely! Of the several commercial products, and those successfully created in the home shop using Arduino tech, James of Clough42 fame strikes me as having the most professionally engineered product. (I suspect his day job is in some engineering discipline.) I would like to have seen a multi-line LCD display or perhaps a touch screen offering, but I suppose that could be accomodated easy enough if someone was ambitious.
Now, I just need something better than a 20 year old 3 in 1 machine to put one on.
@@sansdecorum4600 touch screen not that good to be on the side of a manual lathe, but yes, the interface can be much better, but it's at its beginnings
Perspex/acrylic 12mm sheet also good for gears like this..
Clear gears!
@@doubledarefan yes, and hold up well with brass pinion gears.
Damn I like that Walhaupter.
You might get a little bit more wear resistance if, after milling the teeth (and bore) you coated with a very viscous epoxy and then re-milled the part. This is assuming the epoxy soaked into the phenolic resin at all.
As we might say to @joyofprecision, you went "Full Watchmaker" on the extra change gear bolt! Beautiful work Stefan. And... I might add... Nice & quiet!
Reminds me of Uri Tuchman's preserved lemons. ;)
24:50 "very entertaining situation" had me rolling
Unless I am missing something the 95 tooth gear is just an idler and so could be any size that bridges the gap.
This is odd! I have the imperial version of this lathe, and I can cut metric 0.75 with the gears provided (8 to the inch leadscrew, use 120/127 gear pack in headstock side). I can also cut 1, 2, 1.5, 0.6, and 0.5. On my lathe, gearbox ratios (on the 1-2-3-4-5 lever) are 24/16, 24/14, 24/12, 24/10, 24/9 (to give 16,14,12,10,9 threads/inch) with A-B-C lever in C position. B and A position halve the ratio, giving imperial threads double and quadruple those in the above list. All of this is with 30T gear on spindle and 90T gear on the gearbox.
Stefan, you are the most meticulous de-burrer around, but I guess that is the only way to make the nicest parts, cheers!
That boring head looks quite nice! Can you comment on the brand?
Nice job , i see you had to relieve the tool mid way . Cheers .