Coolman, I am trying to build one of these heads myself.
What I have found is that right angle reduction units run about $1200 apiece, and advertise 3 ' (minutes) of backlash. 10:1 reduction. With a 22 inch spindle, assuming we rotate it from the center, the 3 minutes of backlash becomes .0095 inches of tool movement.
They do have more precise reductions (<1 minute backlash), but only in the inline format. Cant have a motor sticking out the side, can we?
My question for you is: Does anyone sell shorter,more compact spindles with the taper fixture for ATC installed? I would like to find a 5HP spindle, less than 10 inches long, with tool-holder fixture installed. |