The threading is controlled by the gear train (threading gears), not the belt/chain drive train. You can remove all of the drive equipment and still run the threading gears.
I see this machine is set up for CNC and I'm not sure how threading would work in this case. If you wanted to thread manual you could just pull off the timing belt that drives the X axis screw. I think to thread with CNC you would need some way to accurately encode the spindle position. |