Hi All.
Right my JGRO is all together, not as acurate with the Table saw as i hoped, but oh well. I had planed on getting the Jgro to cut its self out again anyway.
The major problem I am having at the moment is trying to get the all thread rod straight. If I dont have the bearing on the end it goes every where. I know there is whip but at the speed i am traversing it at should not be a problem (very slow).
I tried runing it backand forth through a block of wood, say 100mm thick with a hole drilled init and a "T" nut but i dont thinkit has the contact area to straighten the threaded rod.
And due to this movement I think its binding up the z axis. the other two work axis but you can see the rod is all over the shot. I think they work cos they have a lot more lenght to flex and move, if that makes sence.
But the z axis just binds. I have removed the anti backlash cos i thought that was the problem. but no joy.
I am running these screws via some HP steppers with the Hobby CNC 4 axis board.(great board highly recomend it) I was reading the hobby cnc forum it seems they would like to see 36v driving the board and steppers. For testing i have it running via a PC power supply at 12v.
I know there is a big differeance in performance when i upgrade the PS to 36v but could this be the problem?
So the questions?
how do I straighten the damm all-thread rod/lead screws?
Should I step up to the 36v PS now? that would give the steppers more grunt, but this sounds bad.
Should I change the drive plates to the "HPDE block" (threaded with a slot cut down it etc etc) I dont even know if I can make them.
See all you melbourne-ites at the BBQ!!!! :cheers:
CHris