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Very Interesting Video. I have a very similar Atlas lathe with no quick change gear box. It has a threading gear chart hidden under the gear cover which includes metric pitches. I didn’t need to make any huge 127 teeth gears. ruclips.net/video/Jdvbnn-1I_0/видео.htmlsi=raAZQ7mJvhJCbWlW It’s still an approximation but I calculate the variation over an inch and it’s not much at all. I also had to deal with the lack of reverse 🤠

the problem with bevel gears is that noone is told to imagine them as a gear painted on the side of a ball. you then "extrude" that shape with radial lines to the central convergence point. they are "conical" sections of a sphere. so they need three rotations to be cut properly! imagine rays of light from a bulb... the shadow... with cnc its relatively easy... ha ha ... to generate them with a slot saw. need two rotaries though, even if ones manually indexed. three rotaries to do by hand! the workpiece is indexed tooth by tooth. check. its indexed fractionally for each shave, as per standard generating maths. that is, the tool must lift and move towards the arbor as the blank is rotated around a certain amount as the flanks are generated. that "flat" blade being offset to give the desired pressure angle... some trig is involved. der. its pretty fast though, do a quick trial gash to check indexing, lift Z, offset, run through them all, drop tool, offset, and repeat until you run out of metal to cut... with auto feed you can compete with a regular involute cutter... and be accurate! so now that parallel set of lines has to be turned into a cone, a frustrum. the work has to tilt on the B axis, rotating around this convergence point. then with CNC, the angle the cutter traverses in the XY plane is easy to get the other line of convergence, but on manual... a third rotary, the C axis... the cutter offsets have to be figured out to this central convergence point... thats the tricky bit! look at how a gleasson actually operates and imagine the blades as the cutter wheel... therefore everything ELSE must move in relation to it. you ROTATE the blank, but also ROLL it in two axes. sounds complicated? its not that bad... cheaper than getting someone to generate them on a gleasson... and its far more precise than any other way to make them in a shop... im not even going to start on the maths, but it is just an elaboration on the simple method of generating spur gears. just add more rotations... seriously, spend longer actually writing that down without getting lost than it does to set up and actually do! again, its just like a spur gear... trial gash, initial offset, then run through them all and apply the offsets on each rotation... someone that knows spreadsheets could probably figure out an interactive chart in a few minutes... hint hint ;) unfortunately you CANNOT do it with hypoids or helical bevels... the only gears i will never be able to make and dont want to! i know where a gleasson generator is. i made some guys day when i told him what that ornament in the downstairs lobby come cafe was... no plaque... no idea! effin huge, old train workshops. probably good for 8 foot... it was BIG. makes me cry... be hilarious to fire it up in the middle of "brunch", some chips in the latte...

Respect for completing the Quorn. Home Shop Machining is definitely a journey with huge restrictions on Time/Space/Money At least for me :/ Would love to 'find' one of these in a flea market for £10. I was always the dreamer ! :)

What type of milling machine is it?

Just found your channel and Subscribed. Very nice work.

I know this is an older video buy I was wondering where I could get a copy of that chart.

I found your channel looking for "how to's" for my 1941 South Bend 9A, I actually really learned a lot from your voice over from your 3C collet tube video. Don't stop the voice over explanations... middle aged jarheads like me actually find your knowledge and experienced information invaluable. I am a youtube educated hobby machinist...studying tubelcain / Mr. Pete's videos... In my humble opinion, videos with no explanation of what's happening are intimidating and feel braggy.

Only picture but no sound... I get that from my wife very often these days 😆

I am quite happy to see that my work that I did back in early 2000 in excel helped you in your project. Last year I worked in order to enable me to cut BA threads on my South Bend gear, as well as cutting diametral pitch threads. With your gear cutting setup, you should cut delrin gears for the reverse tumbler. It reduces drastically gear noise at high speed. Unfortunately, it is 20 DP Guy Cadrin 12:31

You sure got a lot of balls.

I 3D printed a set of transposing gears for my Boxford lathe, they work perfectly. I also printed a set of gears to make almost any Metric thread. Surprisingly they are strong enough to thread steel, the load on the gears is quite low.

Very nice instrument ! Another thing for your big gear I think big you install one bearing on 1,2,3 block it's more effective for a vibration . Good luck 👍

It looked like a tapered shaft but a parallel bore is that correct? if so why not match bore and shaft? I dont have any problem not seeing your face, but I do miss hearing your voice. So much extra is learnt by hearing the engineer explain issues. Sound quality does not matter to me but I understand lots of viewers complain about sound.

Get rid of all that noise,

Thought the 3c was a 5/8 26 pitch..bigger major. Iike .008 thou...on the collets

Bought my Quorn around 1980 too, finished it around 2020 with the benefit of my Sherline CNC and an engraver bit.

Cool music! Vic Wooten rules! Thanks for the content, too!😀

Thank you for showing this indexer, I just learned of its existence recently.

Dear F. Cleff, i am interest in your products, may I have your contact information?

Can I contact with u? Can u supplying this attachment to me?

Hello F. Cleff, I have watched all your videos and read most of the comments. You did a very good job. I am going to make my own setup based on the vertical mill I have. Can you help me clarify a few things? 1. You stated that you run the mill spindle at 3200 ppr for the gears with 30 teeth and more and you have 2:1 ratio between encoder and mill spindle. That requires 1600 ppr pre-quadrature resolution of the encoder. But AMT102 encoder you are using does not have such resolution. It has 1024 and 2048 ppr and lower numbers. What am I missing? 2. You also stated that you are using a 400 steps per revolution step motor for the work spindle with the 4:1 ratio. This produces 1600 steps per revolution of the work spindle, but not 3200. Can you explain that? 3. Can you tell which stepper are you using? The most common ones are 200 spr, not 400 spr. I am not nit picking on your project, just trying to understand the basic design concept so I can design my own system.

You have probably seen it but there was a post in 2017 to the MEW forum called 'Bought a Quorn and have some questions' which produced an idea to maintain the setting of the centre line of the collet. I have done this mod and it works well and saves a lot of frustration when you have to move the collet back and forth without the table rotating off centre.

Jig made OK and first drill bits ground look good and cut very well. Thanks for your help.

Hi Cliff, excuse me, could you explain to me what is the relationship between spindle revolutions and divider revolutions? Does it change based on the number of gear teeth to be created?

Very clever idea 👍

Thanks for the video! Can you still close the gear cover while using those big gears ?

Hi F.Cleff. Good evening, nice video. I don't understand how the turns between Reducer and Creator are synchronized ... do they couple with each other in some way? I tried to put a hob on the cutter to tooth a wheel, but they ate their teeth. I have a manual cutter, can it be adapted to create gears with a hob?

I have to build the same thing i have a metric capable lathe ..can you share with me the outer max size of the part being made im doing test parts first im at about 31.25 mm

That's a pretty clean functional setup, I enjoy the fact many are using Arduino extensively, progress is always struggle. I was debating on the thumbs up, but then you assured us "no animals were killed or hurt in producing this video", and that was a clincher. You got my vote, now go out and have fun with your milling machine. Make lots of gears, make many things. Thanks for sharing.

Besides a lathe and a dividing head or sorts, what other special tools do you need to finish the kit?

OK thanks for the update, I think I have grasped it better now. Your hand masks the camera while putting it in place and I thought it was fitted into the slot in the table. I have a site called woody's workshop where I will be posting my progress with the Mk1. Also on the comms front you should be able to put an email address in your YT account that appears on the About tab which might be useful. Looking at the 5A power socket in the background of the video I am guessing your might be in SA or a past or current Commonwealth country ?

I have just obtained a Mk1 Quorn which has been built to a very high standard and I am in the process of converting it to an ER25 collet holder and metric clamping arm tighteners to replace the balls levers. I am interested in the jig you made to align the drill bits and wonder if you could give more details ?

Is it a open source code that you may want to share ?

Very cool idea and design! 👍

excellent gear carving videos a question how to synchronize the sevo of the head with that of the mother drill? or is your servo also your motor? thanks for teaching your knowledge

excelentes videos de tallado de engranes una pregunta como sincronizar el sevo del cabezar con el de la fresa madre? o tambien es su servo su motor? gracias por enseñar tus conocimientos

We would love to see how you designed and made the controller box.

That last couple minutes of bonus material was neat also. I liked that ball clamp bushing.

That drilled great! I appreciated the close ups. Thanks for sharing. I am enjoying your Quorn videos.. I have similar ball turning setup.. Works great.

Nicely done! Thanks for sharing this video!

Thanks for sharing this, so few videos available on these amazing little grinders. Did you make all the castings or get them as a kit? How happy are you with the power on it, any issues with it wanting to bog down when taking a cut?

Very nice! Thanks for sharing.. I appreciate Quorn in action videos.

How much are these, and where can we get one? :)

Thanks for sharing this video, I am just about to start machining my Tool Holder so it is great to see the close up use of a finely made one! Much appreciated!

Still hoping that you will find/recreate your lost source code for us to re-use.

thanks for making your videos... I came across your channel looking for Quorn videos... someday I will build one... please make more videos!

that's cool.. someone has solved the work around(s)for non retail available solutions for limited system shops..

Good work Cleff! Glad you made some progress, solved some problems and found new ones. Yes, the cumulative errors! Keep on bro'. On to Part III !

Hello F.Cleff. Very interesting developments here. And talk of occasional disastrous errors! Spurred by Thor214's comments - and recalling my 30 years experience in motion control and synchronising things with encoders and motors and microprocessors - a thought occurred to me! ARITHMETIC OVERFLOW. Yes my friend, for instance with 16 bit signed integers your range of values is +32767 thru zero to -32768. Numbers outside that range will give garbage results. Example: 20,000 times 3 gives -5536. 16 bit two's complement arithmetic!!! DISASTROUS ERROR. Try 32 bit arithmetic, total values zero to 2 to the power 32. Equals 4,294,967,296, or let's say about 2.2 billion plus or minus. If your spindle is running for a long time your spindle counts will be adding up . . . at say 10,000 counts per spindle revolution and 600 rpm, you'll be at the limit in 5.96 hours. Oh well, not likely, but you see what I'm getting at. The number TYPE needs to be respected. And when you go to floating point with it's numeric range beyond VAST, you can have a problem with tiny cumulative errors, that over and over - for instance at every step motor STEP - add up to appreciable errors. I've been there! So I wish you good luck! And ps: love your bass line!

hi friend, i'm from brazil, greetings, how can i make a controller equal to this arduino? do you have to sell me one? or teach me how can i make one to control the encoder?