On 14 April 2013 11:20, Lars Andersson <l...@larsandersson.com> wrote:
> http://forumbilder.se/CDVO4/fras > > It has no power feed whatsoever but is not much worn and feels very > sound. It is meant to be converted to LinuxCNC as a hobby project. > I have not made anything this big before, wondering what drive torque on > the feed screws to aim for? I am using 750W servos with a 2Nm (7Nm peak) rating, with a 4:1 belt ratio, and it seems to be about right. I don't think I would want to go any lower on the Z, though it is rather more than necessary on the Y. I had to convert the Z to ball screw, the torque was inadequate with the original leadscrew. So if you want to keep the Z as it is, then you would need more. I went for a rotating-nut arrangement on the Z to keep the motor inside the machine. It isn't clear if you have access to that area in yours. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis & visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
