I had a problem with my Y-Axis and was wondering if anyone has encounter the same issue. I bought my machine used so I unfortunately didn't get the opportunity to build it. While cutting the other day, the machines Y Axis started dragging on the one side. After looking into why this was happening, It seems like where the threaded rod and motor come together is not properly connected. I tried tightening it but that didn't seem to do anything. If I try to jog the machine around the motor and rod move but the Y axis itself only moves on the one side that is properly connected. How should I go about resolving this issues, has anyone encountered this themselves before and would you have an idea as to why this would have happened? Machine: Open Builds Leads 1010 Router: Dewalt 611
Replace broken shaft coupler: 1/4" x 8mm Flexible Coupling Add some loctite to the Grubscrews so they don't vibrate loose (old coupler either broke, or lost its grubscrews when they vibrated out without loctite)
Thanks for your response Peter! I think the Grubscrews are still in the shaft coupler as I did try tightening them down... But that didn't seem to remedy the situation. The Shaft Coupler looked to be intact but I could be missing something.
Oh wait, the "leadscrew" does spin? Then broken leadnuts? Nut Block for 8mm Metric Acme Lead Screw or Anti-Backlash Nut Block for 8mm Metric Acme Lead Screw If that guess doesn't end being right, you'll have to take apart and see what broke
Yeah, I may have to take that apart and see what is going on, I do not recognize those parts for the second suggestion.
I'm having trouble with the flexible couplings letting loose of the lead screws on my C extrusion lead machine Y axis. Here is the coupling for reference. 5mm * 8mm Flexible Coupling Twice when I hit an obstruction while jogging the Y instead of skipping steps the set screws on the lead screws slipped. This caused me to need to back out the set screw and reset this screw. I'm, afraid if I do this again, I'll strip the tiny set screw.. Beyond the obvious (don't hit an obstruction) what can I do to make this more robust? Should I file a flat spot on the lead screw so the set screw can bite properly? Also is locktite used on this screw?
Yes - use (non-permanent) loctite. Some people file a flat on the leadscrew and if that all fails you can drill and tap the coupler for 4 mm. Alex.
