I'm designing a 5 axis CNC, and preloading my lead screws has never been an issue for me, but for the first time, I find myself needing to preload a worm gear. How is this done, and what's the best way to do it? Thanks.
For worm gears, the most common method to reduce backlash is by forcing the worm screw tightly against the gear. Many manual rotary tables used on milling machines have this adjustment.