Ratchet clamping system

cults3d

I have been a proud member of the e-Nable France association for some time now. The community I am part of develops life-changing assistive technologies like 3D printed hands. These incredible hands are given away for free to children born with agenesis, a condition where they are born without fingers. To learn more about this amazing organization, please visit https://e-nable.fr/ or http://enablingthefuture.org/. I am currently working on a groundbreaking prosthesis project that will enable kids with agenesis to hit the slopes and ski. As part of this project, I designed a wheel clamping system to securely attach the ski pole to the prosthesis. After exhausting my search for a suitable solution online, I realized that nothing met my needs. The principle behind this innovative design is simple: turn the knob clockwise and the coil inside winds the cord. The pawls firmly hold the coil in place, preventing it from rotating in the opposite direction. To release the tension on the cord, simply pull the knob and the coil will be released. This ingenious device can be easily adapted to suit your specific requirements. It's still a work in progress, but I'm thrilled with how well it works so far. To bring this design to life, I used PLA and a 4mm nozzle. Given its mechanical nature and low tolerances, I recommend printing all parts with a layer height of 0.1mm for optimal results. For the ratchet part, I've included an STL file with a support offset by 0.3mm to make printing easier (no additional support is needed). The circular spring inside the knob and the pattern on top are two separate parts that need to be glued together – feel free to print them in your favorite color. The pawl fits neatly into the circular spring via three tabs, while the spacer must be inserted between the ratchet disc and the circular spring. The corp_2 part can be fixed using M3 screws, and the piece corp_3 provides a secure sewing fixation point. To assemble everything, use a 20mm M3 screw and an M3 hexagonal nut to close it all up. Before final assembly, make sure the spacer on the spring and ratchet disc is sliding smoothly. For guidance on printing the cord, please refer to the attached pictures.