On Sunday, 17 April 2022 05:57:07 EDT Torsten Curdt via Emc-developers wrote: > > BUT my ballscrews are 05mm and planned for servo speeds. > > > > > I don't really want to go from the idea of the dynamic servo driven > > > machine to the stepper turtle :) > > > > All my stuff is steppers, but I wouldn't call a g0 move at 250 ipm a > > turtle. The whole steel framed table its on shakes. > > /me converts - that's 6.35 meter per minute - that's about 10.5cm per > second. > > I would suspect the dynamic movement (acc/dec) of a servo might > actually shake it less.
Thats with accell/decel controls, steppers do that too, in LinuxCNC. > It seems like 500 ipm should be easily doable with a servo. But that's > still just reading/watching knowledge here. > > > Mach3's bob's can be used but my being a "CET" means they're not OOTB > > > CET means central european time to me - what does it mean to you? :) Certified Electronics Technician. Registered in Nebraska in 1972 as NEB-118, but the 118 was the count in the whole country. > > For folks who aren't comfy with a hot air rework soldering iron > > > surgically implanted in a right hand, that need does remove those $20 > > boards from consideration. Mesa and cnc4pc both make better bobs, but > > bring more money. > > Not an EE - but I had my first soldering iron when I was 7y :) Good, I think I was 9 yo. > > But,if you are going to use it to drive a spindle, which is "CCS" > > service. be sure and tell Jon when you order it. he'll change the > > toroid filters from ICAS to CCS, the ICAS version gets hot, the CCS > > versions doesn't. > > Why would they not be CCS? Servo's at rest don't use a lot of power. > > > Which made me curious and I started digging - down the rabbit hole > > > ;) > > > > Locally, that hole is more likely a gopher or ground hog hole. ;) > > Got more gophers than rabbits? :) Locally yes. > > > Hope that explains the status quo. > > > > Somewhat, but the ball screws at 5mm pitch is pretty much stock in > > what's commonly available. > > People usually build this CNC with 10mm pitch ball screws and open loop > 2.5Nm steppers with a parallel BOB. > I could go 2Nm or 3Nm closed loop steppers - but are still not much > wiser in terms of the boards. > > Maybe finding an old parallel port machine might still be the easier > route > :-/ Better yet, a pci-e buss and a 5i25 card. two parports lots faster than a mobo parport. > Happy Easter! > > cheers, > Torsten Back at you. > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers > . Cheers, Gene Heskett. -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
