> 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. 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? :) 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 :) > 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? > > 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? :) > > 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 :-/ Happy Easter! cheers, Torsten _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
