I have a big knee mill(>3tons) that has for X & Y 3208(32mm diameter 8mm step) leadscrews (X is about 1.5m) and i want to convert it to cnc(i have already the servo motors/drivers).
To change leadscrews with ballscrews it is very costly because i want 3205 or 3210 ballscrews & ballnuts.
So are there any good technique that can i eliminate backlash from leadscrews without so much friction between leadscrew & nut ?
I know that ballscrew is the only correct solution but i plan to do this in future not now.
What can i do to eliminate backlash in leadscrews ?
Thanks.