On Sat, 20 Apr 2019 at 21:27, Leonardo Marsaglia <[email protected]> wrote:
> I plan to use some chinese rack and pinions (MOD 2 with 30 teeth pinions > rotating at a max speed of 200 RPM) for the obvious reason of the budget. > But I can get hardened and ground rack and pinions so I think that sounds > pretty good. Anyway, I think I should stick with the straight rack and > pinion since it's the simpler solution and being hardened and ground I > think they will behave pretty well but I would like to hear your opinions. Helical might be slightly smoother, but won't have less backlash, so any advantage is quite subtle. > > 2- For the servo-to-pinion reduction: Planetary servo reducer or worm and > gear reducer with timing belt? How much reduction do you need? You need to be careful to eliminate as much backlash as possible, so if you could get all the reduction in a single stage with a belt drive, that might be best. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
