Well I don't know how helpful this is but I used to have an RF45 that I retrofit to CNC. It was a nice little mill but I have since sold it and moved on to a Vertical Machining center retrofit. My machine used Geckos and brushed DC servos on it. The ones I chose were probably a bit overkill but it had 1100 OZ in servos with belt drives on it. The Z which moves that rather heavy millhead up and down the column used a 4-1 ratio and the other axes a 3-1 ratio mostly for convenience. You could probably get away with 5-600 Oz in servos with the right belt drive ratio or maybe a nema 34 8nm stepper on it direct drive. Currently I would look into the new Hybrid servo steppers available and go direct drive on X and Y and maybe use a reduction on Z to help with the load. Mine ran on Mach3 because I did not know any better so now it would be linuxCNC and mesa cards for sure. I also added some gas springs to either side of the millhead which helped tremendously and made the Z rapids much quicker. Should have done that at the beginning really. My build is called Finally getting started on the CNC zone benchtop forum. you can read all about what I did and how I did it there including a custom built belt drive with 3hp 3phase motor and sensorless vector drive. Upgraded spindle bearings to angular contacts and a complete refinish and repaint of the machine while adding one shot oiler to all the movements and ballscrews. Lots of work in that little mill and once it was finished it was actually quite a decent machine. Nothing like my Cincinatti but for a chinese bedmill it was pretty sweet. Good luck man. peace
Pete On Fri, Nov 7, 2014 at 11:52 AM, Dave Cole <[email protected]> wrote: > On 11/7/2014 9:57 AM, Sebastian Kuzminsky wrote: > > On 11/07/2014 04:55 AM, Marshland Engineering wrote: > >> Got my first issue. The new Gigabyte GA-J1900N motherboard bios/boot > does not > >> like the USB address and fails to load them. The mouse and both > keyboard work > >> until debian starts to load and the they both switch off. > >> > >> usb 1-1: device not accepting address 2, error -110 > >> usb 1-1: new high-speed USB device number 3 using ehci_hcd > > Is this while trying to boot from the LinuxCNC 2.6 live-cd? > > > > If so, try re-downloading it, Chris Radek just updated it with a bug-fix > > for the J1900 motherboard. > > > > Also, make sure you are using bios version F3 or later. > > The older bios versions were junk. > > Dave > > > --- > This email is free from viruses and malware because avast! Antivirus > protection is active. > http://www.avast.com > > > > ------------------------------------------------------------------------------ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Pete Matos A and N Precision and Fabrication Maryville, Tennessee 865-236-8996 ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
