This section is as good as any.
Driving the quill is the ''standard'' method, but moving the knee has successfully been done. For the quill drive, it can be a ball screw or a gear train. I designed a gear drive for mine, makes it easy to switch between manual and CNC quill, just flip a lever to switch between the two.which drive method would be best for the z axis ,moving knee up and down or driving the quill.
Ground is better, but rolled will work. My machine has ground screws.are rolled ball screws of a quality that can be used or do i need to use expensive ground ball screws.
You can use the VFD with the vari-drive, I ran mine that way for years before I changed over to direct drive.is it possible to change the vary speed drives for a fixed drive so i can install a vfd or is there a way of doing this without changing discs.
My machine has 2505 ball screws. (or 25 x 0.200'', not sure which)it appears that my machine would need 25mm ball screws but what pitch would be best for this as i am thinking a/c servo motors.
Your questions are not stupid. That's how we learn.i hope these questions don't seem stupid so someone can put me in the right direction please
I would design the system so that you can keep full manual capabilities. I use mine as a manual machine as much as I use it as a CNC. It is manual, 2, 3, or 4 axis CNC, with switch over in seconds.