On Sat, 2010-05-15 at 07:34 -0400, mtg7...@aol.com wrote: > I was thinking of tearing apart an old Fanuc arcmate sr with RJ control - > -or whatever available bot i can get my hands on- > and using the components to re-cnc the wells index 823 mill i have
If it were my mill, I would look for some 90 (or higher) Volt DC brushed motors from a treadmill or similar. The robot motors will most likely have proprietary output shafts and drive requirements, which would be hard to deal with. A more generic motor would most likely have enough plain shaft to mount a timing belt pulley. You can fit a US Digital encoder disk and sensor to the motor shaft or preferably to the ball screw for each axis. If you get the disk and sensor separately you can save a bit of money by machining the rest of the assembly, and you can get a custom fit. Here is the test setup on my Bridgeport: http://www.wallacecompany.com/machine_shop/bridgeport/00047-1a.jpg http://www.wallacecompany.com/machine_shop/bridgeport/00046-1a.jpg http://www.wallacecompany.com/machine_shop/bridgeport/ The ball screws turned out to have a couple of thousandths of an inch slop, so I need to find another set before I continue with this project. I'll probably mount a small timing belt between the ball screw to an encoder, similar to this: http://www.wallacecompany.com/machine_shop/bridgeport/ I would keep the robot intact, run it with EMC2 as a work piece changer, tool changer and beer server. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
