Anti backlash lead screw example design

thingiverse

Here's how to create an anti-backlash lead screw using 2 nuts and this printed part: Just print out two M5 nuts and a spring, and you'll have all the components needed to build this design. Start by tightly gripping the two nuts together, making sure they're secure in the nut capture. Don't over-tighten them, though - too much friction will slow down the screw's motion. You should feel some resistance when the screw moves through its travel, but it shouldn't be so stiff that you can barely turn it. Now that we've got our basics covered, let's move on to adding lubrication to our anti-backlash lead screw system. Because this design creates more drag than a ball screw system, we'll need to use a light lubricant to keep things running smoothly. A good choice is a lubricant that contains Teflon - it will help reduce friction and keep your system moving freely. Now, let's take a closer look at how our anti-backlash lead screw system should be assembled. You can draw a new CAD file with the correct bolt holes for mounting your particular size threaded rod. Printing at 100% is recommended for this design, and leaving about 0.2mm of clearance for the nut is usually sufficient. So if you're using an M6 threaded rod, for example, the nut should be 10mm in diameter. You can also draw a six-sided enclosure for the nut to make it easier to insert into the system.