A wonderful solution for a machine that many have parted from their shops. There is something about these machines that sets them apart and one is drawn into their rocking motion producing the joys of engineering The hours of work developing this drive and gears needed for cutting wow. I must thank you for taking the time in it's build requirements and operation
I was thinking more along the lines that they've calculated pi to 62.8 trillion places and my approximation runs out after 4 digits! 😂 I have some drawings in designspark but theyre not dimensioned up. They were more to test ideas, but I'm happy to share them.
Thanks for subscribing! I've been watching your channel for a while, so I know how fond you are of your shaper. I'm just trying to find good uses for mine for things that are difficult or expensive to do another way!
Aah, the joys of engineering. One problem, so many solutions! I dare say cogged belts, flexible drives (as in a speedo cable) would all work. I had a set of gears, so I used what came to hand. As it was, this took me about about 3 months to complete.
Thanks! Unfortunately there's no data plate on the motor but I think it's the original fitted to this machine. I have reconfigured the windings from star to delta to run on a 220V inverter, but otherwise the drive train is original.
MY shaper is the earlier Alba 1A which the Elliott 10M evolved from. The original motor for mine should have been a 3 phase running at 915 rpm so most likely it would have been a 6 pole 3 phase unit. When I got the shaper someone had fitted a 4 pole 3 phase motor converted to run on single phase with capacitors. This motor ran too fast and was gutless with poor torque. I eventually managed to source a single phase 6 pole motor with suitable horsepower for the shaper which runs at approximately 950 rpm and all runs very nicely now.
Beautiful work, and the engineering is impressive. I like the application of crossed helical gears for the angle drive! Very compact and quiet as well. I used bevel gears in my last project…your design achieves an elegance that is still my aspiration. Well done…and your video quality is excellent, too!
@@thomasstover6272Thanks for watching! I used helicals rather than bevel gears as 1) I've cut helicals before but not bevel gears and 2) the helicals are far more compact. The helicals might be quieter, but you'd be hard pressed to tell with the racket of the rest of the gear train!
@@ThePottingShedWorkshop I have cut bevel gears before (using the method from Law’s book), and vowed never to do that again. Not hard but very tedious. I’m just getting my hobbing machine to 45 deg helix angle, and I think a crossed drive is in my near future! Looking forward to your next video!
Robert, I have to tell you that 11/14 ratio for pi/4 kept me up last night. I think I understand why you did that…you have to convert table movement to angular displacement at the pitch circle, which will always involve pi. Very clever design! It’s possible you could generate constant depth bevel gear teeth by the same method, which would be very cool!
@@thomasstover6272 Thank you. I thought attempting to cancel out pi (to within 0.04%!) would make it easier to synthesize the ratio accurately given I only have a choice of 13 gears (although there's no reason why I can't make more!). If you have an idea how to generate bevel gears, please share it! From what I could work out, I would need some sort of indexing system on the end of the spindle to rotate the gear blank at a different angle. The next 2 videos are almost done. Probably not that exciting, machining a gear blank is fairly run of the mill and watching the shaper cut gears is definately soporiphic! After that I'll do one on the helical cutting variant.
I'd watched videos where others had used the wire wrapped around a pitch circle diameter disc technique and figured out I could do better. This is the result, I'm proud to say all my own creation. Improving on what others have done. Without the videos, I would probably not have come up with this improvement.
Thats where I was after I'd rebuilt mine. Get to know your machine, cut some flat surfaces, try different tool shapes. A shear tool works well for finishing. Have a look at Rustinox's earlier videos on the shaper. There's no short cut to first hand experience, so invest some time!
G'day Robert, one hundred and fifty five subscribers so far eh? Add one more to count me in if I may. Two videos at present and looking forward to many more. Cheers.
Goodness only knows! It took about 3 months to get it to work to cut spur gears. Add on to the workshop time the time spent doing some preliminary design in 3D design software (Designspark, free download from rswww.com) and writing the spreadsheet to run it and it prob comes out to 150 hours minimum. But I didnt keep a tally, so thats just a guess.
Yeah i need to get on the software design stuff all the really good stuff is driven by that. I think the mind alone only works on so many levels. Subbed anyway will follow along. Inspiration for me as i’ve a Boxford 8” shaper myself and love all shaper vids
This is a bit advanced for me... But interesting stuff... I am a retired carpenter, but have developed an interest in metal working. I have a small cheap lathe, and am soon to buy a mill! Frank...
Thanks for watching. You need to be careful. Thats how I started, 25 years woodturning as a hobby, then bought a minilathe, then a mini mill, then a "proper" lathe (used in the upcoming video), finally ending up with a workshop full of vintage machines, some older than me!
@@ThePottingShedWorkshop Yeah, I regret buying the lathe I have... It was cheap and small, but I have to work on a peppercorn budget, so I had little choice ! I have tried to improve it where it's within my skill set. Are you going to be making some bits and bobs, tooling, ect... I would be following your vids in the future! Frank...
@@frankjames4573 Yes, I have plans after the gear cutting attachment for 2 more video series but it will take me a while to get round to filming them. It took me over a year to take the plunge to do this series!
