- Igor
On Wed, Sep 8, 2010 at 12:57 PM, Jon Elson <el...@pico-systems.com> wrote: > Igor Chudov wrote: >> Thanks to all for some clarifications that encouraged me to take some >> ginger first steps towards this (read, bought a servo motor on ebay). >> >> Guys, do you think that this servo motor will "do" to motorize the >> knee of my Bridgeport Interact: >> >> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=390233108125 >> >> This is an "Italiano servomotori", with a 15:1 gearbox and a tach. I >> think that it can give me about 7 ft-lbs of torque on its chain drive >> at 200 RPM. That should be enough to move the knee with air assist. >> With 1:1 transmission, it would amount to 40 IPM, probably a bit less >> in real life. >> > Is this just a power elevator or a real servo axis? If servo, what will > you use to measure > W position? Probably not good to put an encoder on the motor, between > the worm gear on the motor, > the bevel gear in the knee and the Acme screw, the backlash will be large. Jon, good question. I think that the heavy knee will always sit tight on the acme screw. Other backlash may be at least repeatable. I will see. I am not totally averse to just putting an encoder on the knee handle shaft. i > Jon > > ------------------------------------------------------------------------------ > This SF.net Dev2Dev email is sponsored by: > > Show off your parallel programming skills. > Enter the Intel(R) Threading Challenge 2010. > http://p.sf.net/sfu/intel-thread-sfd > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ This SF.net Dev2Dev email is sponsored by: Show off your parallel programming skills. Enter the Intel(R) Threading Challenge 2010. http://p.sf.net/sfu/intel-thread-sfd _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
