Design of Omni Wheels
Hi! I'm extremely new to robotics but as part of a competition I was entering for amateur school students, we were planning on using omni wheels (not mecanum but instead the wheels with rollers patterned around). I (as I have some CAD experience) have been given the duty of designing these in Fusion 360, however, I'm not 100% sure on the attachment mechanism for the rollers and the pins. Taking some inspiration from a blog post (see image down below) I wanted to do a similar thing. However I have a few questions.... how are the rollers kept from moving along the axle pin and how is the axle pin made stable, I'm just not sure how to design it. Notes: even though I am taking inspiration from the diagram , I am not specifically talking about how it works in the diagram as I know that may be hard to diagnose, I am speaking more generally
I have attempted something myself (see second photo) but the roller and roller pin was all one, which I realised wouldnt work as the dimensions for the pin fit exactly which would not allow it to rotate and if it was loose it would be useless. Sorry for my spaghetti ADHD writing! Any help appreciated! Thank youuuuuu.
Posted Nov 28, 2025, 5:45 PM UTC