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.
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