- Joined
- Nov 28, 2013
- Messages
- 196
My 2000 was purchased in July. I've made some things with it but was more consumed by getting my shop organized (??), and solving some of the other problems that floated to the surface during all of this. My 2000 is set up with Sherline's steppers and a non-Sherline controller running on LinuxCNC. It works great.
X and Y axes run very smoothly. Each has a bit less than .003 backlash. I've been fooling with backlash on Z axis and with the backlash toggle adjusted so lead screw turns smoothly through the range that will see the most action, I get about .005-.006 backlash. I determined this with a B&S test indicator, feeding the head down to get a needle deflection, reading the thimble, then reversing the wheel and noting it's position when the indicator needle starts to back up.
If I add even the slightest additional tension using the backlash toggle, I get binding here and there as i run the head up and down the column. It is easy to tighten it so much that head won't budge.
Am I expecting too much of this lead screw? I could write a simple G-Code routine to run the head up and down the column over and over in the hope of "running in" the screw, or???
Doe any of this make sense? What would you do?
john
X and Y axes run very smoothly. Each has a bit less than .003 backlash. I've been fooling with backlash on Z axis and with the backlash toggle adjusted so lead screw turns smoothly through the range that will see the most action, I get about .005-.006 backlash. I determined this with a B&S test indicator, feeding the head down to get a needle deflection, reading the thimble, then reversing the wheel and noting it's position when the indicator needle starts to back up.
If I add even the slightest additional tension using the backlash toggle, I get binding here and there as i run the head up and down the column. It is easy to tighten it so much that head won't budge.
Am I expecting too much of this lead screw? I could write a simple G-Code routine to run the head up and down the column over and over in the hope of "running in" the screw, or???
Doe any of this make sense? What would you do?
john