Clamping leadscrew coupler

thingiverse

I've been struggling to perfect a reliable coupler design on the Z axis of my new printer project. This was the outcome after multiple attempts. It effectively links a 5mm motor shaft with a 10mm lead screw. If you require another size, just let me know and I'll create it for you. Additionally, I can share any format OnShape exports. It's essentially a collet with two clamps that secure it firmly in place. Three screws clamp it down, and so far, it works exceptionally well. The self-centering feature, combined with its strength and effective clamping mechanism, makes it an excellent solution. Update: I've uploaded the design for a 5mm motor shaft to an 8mm lead screw coupler, along with .step files for both the collet and clamps. These same clamps can be used without any modifications. Print Settings: Printer: Custom Built CoreXY Rafts: Yes Supports: No Resolution: 0.2 Infill: 50% Notes: I use a raft to prevent the coupler from toppling over. Ensure it's oriented with the 5mm opening facing downwards, against the build platform. I chose PETG for its toughness and excellent printing properties, as well as its ability to withstand higher temperatures than PLA, without emitting a strong odor like ABS. Nylon is also a suitable material for this part. I use 50% infill – although not much of it actually gets filled in, since the collet itself is solid. However, both clamps receive some infill support.