On 5 Jul 2014, at 22:25, andy pugh wrote: > On 5 July 2014 22:14, Marcus Bowman <[email protected]> > wrote: >> I just don't believe in trying to trim the size or power of a stepper to >> save a few pounds/dollars. I'd rather over-spec slightly in the knowledge >> that I have power in hand. > > It isn't necessarily that simple, though. > It seems that the smaller steppers typically spin faster. On my > mill/lathe the shortest, weakest stepper is actually the one that > stalls least frequently. It is the X of the lathe, and that does > generally need less force than the Z, though. > > Once you bring gear ratios into the system you can end up with a small > stepper running at high rpm being more suitable than a larger, > higher-torque but lower-speed/higher inductance one. > > However, if I was building a stepper machine I think I would be > looking carefully at the hybrid systems: > > http://www.ebay.co.uk/itm/301181761480 > Great link - thanks. I see the Step & Direction lines. What about the Pend+, Pend1, ALM+ an ALM- lines? Can LinuxCNC handle those using an established method? I have no experience of hooking up servos, so I don't know if this hybrid setup interfaces in the same way. What handles the errors - the hybrid Step-servo interface, or LinuxCNC?
Marcus > -- > atp > If you can't fix it, you don't own it. > http://www.ifixit.com/Manifesto > > ------------------------------------------------------------------------------ > Open source business process management suite built on Java and Eclipse > Turn processes into business applications with Bonita BPM Community Edition > Quickly connect people, data, and systems into organized workflows > Winner of BOSSIE, CODIE, OW2 and Gartner awards > http://p.sf.net/sfu/Bonitasoft > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
