I know this has been talked about many times but I just wanted to share my design. Please excuse the design picture becuase i did this at work without any cad.
My advanced yet semi simple design to fix backlash. I have seen a few types of backlash compensation.
The two that are very common are:
- Spring between nuts. (this will auto adjust backlash as it happens but the problem is the backlash only as good as the spring used.. Also with high spring compression comes excessive ware on the nuts.
- Screw to adjust backlash. (this can be very rigid fix but problem is as wear happens you have to re adjust the screw/s to compensate.
advances not increases...
This design has both of the good features of the two designs. It automatically adjusts for backlash and is rigid because the screws are holding the nuts apart not a spring. This also reduces wear because only enough force is applied to the screws to turn them.