I just purchased a table and am looking at the systems to drive it.
The X and Y axis are 2 mtrs.
Out of the following, which do you think would be better.
1. 2" wide belts
2. Acme screw
3. Rack and pinion
On my prototype machine, which is small, i ran both belt and screw. I found screw was better as i could drive the machine better, (force and repetition).
I found belt better from a setup and maintenance point, plus backlash is built in.
My thoughts are that a screw on this length is going to be a pain, whipping, and un-even wear across the length of the screw, plus sag across the length will be a problem.
If i use belt, then setup and cost is minimal, with gearing i can get good resolution, in some cases the same as a screw. I am assuming that i would have a screw of 10mm pitch for this size run and if i gear belt to 30:1 with a 100mm drive "sprocket", i would get the same.
Any comments and findings would be valued