Thanks to all who responded. I don’t think he is married to servos, it is just that the system he has has an old stepper and it has never worked well, most industrial machines he has in his shop have servos so he thought that would be more reliable.
> On Nov 20, 2018, at 12:37 AM, Gene Heskett <ghesk...@shentel.net> wrote: > > What is wrong with the drive? It might be repairable with some fresh > capacitors. The DRO display was nixie tube based and it has bad tubes as well as (now) being completely off. So probably not worth trying to revive. In addition, as I said above the system has never worked well, it often loses position or moves the wrong amount. He wants to replace it at this point. > Because it will need to scan the surface, it seems to me LCNC would be > pretty ideal, with suitably sized steppers all around. You don't > normally drive a surface grinder at >20 ipm , and steppers can do that > nicely. You can also write the code to remove as little as you want per > pass, even staying ahead of wheel wear once thats been characterized. > > Seems like servo's would be overkill for that job. Yes, Linuxcnc would certainly work and you are correct that speed isn’t an issue so could probably just step from the PC. Also, given a modern stepper with enough torque it would probably be fine vs a servo system. Linuxcnc just seems a bit overkill (as well) given the simplicity of what he wants to do. Thanks, -Tom _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
