Motors, nuts...yeah. OK so as far as that nut goes, I believe that this particular nut has a preload built in, which is good. The whole point of the rotating nut assembly is to just be able to have everything you need in one easy to deal with package.
Now the motors... yes they're gonna be big motors. Depending on my gearing(belt) ratios, the servos are calculated to be either 2 or 3KW for the heaviest axis. If I gear down more, I can use smaller motors. With the long lead of the screws I'm using, I'm using mostly torque. With a 1:1 ratio, 500 RPM gets me a thousand IPM rapid. Pretty fast. With a rated RPM of 2000, the machine is, in theory at least, capable of a 4000 IPM rapid. 3.7 miles per hour. OK.. Do I really need this? Probably not. |