I would link the 2 magenta screws with a series of of toothed cogwheels. Then you can better transmit the torque between them, and not have to worry about snapped, worn, or stretched out belt ever again. The mounts for each individual magenta screw make as one solid piece so you can set the cogwheels into that further stabilizing the assembly. Combine the green mount into that as well, so now you have one solid piece for the whole side. So it will last longer.
i was thinking of doing this a year or two ago for the 3d printer/router. its common practice on lathes and the like... then i looked up the price for standard ball spline shafts... the idea ended there. i stuck to plain old lead screws... a "feather key" just isnt common enough to be cheap, unlike the linear rails and bearings and leadscrews and belts and all the other bits we can get for next to nothing now. ffs, i just replaced all the ballscrews on my cnc mill, all up it still cost less than one screw did fifteen odd years ago.
There are many types of such mechanisms. Please refer to pages 180 - 190, Part 2 of my book: 3200 ANIMATED MECHANICAL MECHANISMS www.mediafire.com/file/muio0i3hyvnhtj6/3200AMMe.zip/file
This is a nice design for low cost microscope motorized stage.
As always genius and nice animations 🔥
low cost?
have you seen how much a splined shaft is?
i was looking around a year or two ago... i doubt the price has fallen recently.
I thought about this too a few years back as a fast edition H bot printer. Great design as always
I would link the 2 magenta screws with a series of of toothed cogwheels. Then you can better transmit the torque between them, and not have to worry about snapped, worn, or stretched out belt ever again. The mounts for each individual magenta screw make as one solid piece so you can set the cogwheels into that further stabilizing the assembly. Combine the green mount into that as well, so now you have one solid piece for the whole side. So it will last longer.
Clever. The worm gears will also prevent backdriving the motors
Always a pleasure to see your work. Would you mind sharing the Inventor file? Thank you.
i was thinking of doing this a year or two ago for the 3d printer/router. its common practice on lathes and the like...
then i looked up the price for standard ball spline shafts... the idea ended there. i stuck to plain old lead screws...
a "feather key" just isnt common enough to be cheap, unlike the linear rails and bearings and leadscrews and belts and all the other bits we can get for next to nothing now. ffs, i just replaced all the ballscrews on my cnc mill, all up it still cost less than one screw did fifteen odd years ago.
could a spline shaft work here too?
Spline shaft is better.
Can you make some more one way rotation ones? Love those
There are many types of such mechanisms. Please refer to pages 180 - 190, Part 2 of my book:
3200 ANIMATED MECHANICAL MECHANISMS
www.mediafire.com/file/muio0i3hyvnhtj6/3200AMMe.zip/file
Thanks 🙏
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Links to download CAD files of this video have been added to the video description recently.
IT'S GOOD. BUT I must say the colors are not right. Maybe. Just swapping them would fix this problem.
lot of backlash