I have been cleaning and replacing a few parts on my FP2. I had quite a lot of backlash in my X axis. I measured it prior to replacing the leadscrew nut and it had roughly 180 degree turn of the hand wheel worth of backlash. My calculations show that prior to the leadscrew nut replacement I had 1.27mm of backlash (imperial leadscrew, .1 per revolution). With the new leadscrew my backlash is down to 1/10th of a turn, so .254mm. Ideally I want to get it tighter than this without replacing the leadscrew.
I added a brass shim in the end plate bearing opposite the hand wheel against the doweled sleeve. There was a gap of ~2mm between the bearing and the end screw sleeve. This was an attempt to remove any axial run-out. This made no difference to the backlash.
I did notice that tightening the main fixing nut on the hand wheel side has a significant impact on reducing backlash. I am not sure how to clamp things to try to tighten further.
Any ideas on how I can clamp the leadscrew to tighten the fixing bolt? And any other ideas on what I can try to reduce the .254mm of backlash or is this as good as it gets?
I added a brass shim in the end plate bearing opposite the hand wheel against the doweled sleeve. There was a gap of ~2mm between the bearing and the end screw sleeve. This was an attempt to remove any axial run-out. This made no difference to the backlash.
I did notice that tightening the main fixing nut on the hand wheel side has a significant impact on reducing backlash. I am not sure how to clamp things to try to tighten further.
Any ideas on how I can clamp the leadscrew to tighten the fixing bolt? And any other ideas on what I can try to reduce the .254mm of backlash or is this as good as it gets?