X-axis Tensioner to avoid forces on Z-axis

prusaprinters

This remix allows you to tension the belt without putting the tension in the belt back through the z-axis linear guides. The tension in the belt becomes a compression force on the x-axis linear guides through the two screws that thread into small nuts pressed into the plate on the end of the axis.Note: Tensioner.step is the same as Y-Yoke.stlYou will also need:3mm screws x33mm nuts x33mm washer x13-5mm drill bit (and a tool to run it in)The bearings, screw, and nut from the original set up on the printer.Print SettingsPrinter:FolgerTech 2020 i3Rafts: NoSupports:NoResolution: .2mmInfill:20%Post-PrintingStep 1Press the 3mm nuts into the hexagonal depressions in the plateStep 2Drill two holes in the end of the x-axis in line with the x-axis linear rods. It is helpful to have these slightly oversized.Step 3Remove current idler pulley from x-axis on printer, reassemble in yoke.Step 4Press a 3mm nut into the slot in the y-yoke.Step 5Assemble the plate and the yoke inside the current end of the x-axis.Step 6Tighten the outside screws evenly until they press against the ends of the x-axis linear rods. Tighten the middle screw to pull the x-axis belt tight. Tighten all 3 screws as needed.How I Designed ThisRemembering the issues I had the first time I tried to get the x-axis belt tight enough, I wanted a way to have a framework that held the x-axis at a constant width no matter how tight I pulled the belt. I started with trying to use some threaded rod, but pretty quickly while looking at other solutions, I noticed that by making the plate in most of the tensioners a little longer, I could turn the linear rods into that framework by drilling a couple holes.  Category: 3D Printer Parts