I have never thought about the use of squishy gears like this! I also appreciate showing the parts and the kind of torque it produces at the end there! Real fuel for thought.
He said the flex spline and the gear base have the same number of teeth, so the white flex spline doesn't rotate relative to the base. The black cap at the end of the video has a different number of teeth than the spline/base so it rotates relative to the spline/base at a greatly reduced ratio compared to the input rotation. The load would be connected to the rotating cap and receive far more torque than the input, which is the purpose of the device.
How did you design the internal spline on the lower portion with the same number of teeth? Did you have to make the internal spline a larger gear module than the wave generator?
I made the flexible spline the same amount of teeth as the base it sits in. I just cut the gear out from the base to invert it and added some scale to make it fit a little better. The cap has 2 teeth more than the flex spline and I also added some scale to make it fit a little better there as well. I put some backlash on the gears as well to account for 3D printing error. I'm not sure how else to explain it. Hope that clears it up a little.
It is possible to make teeth that mesh nicely, but I only stumbled on to it for one particular combination of 34-34-36 tooth gears via trial and error in Blender. Very tedious work, fiddling the width and curvature of the teeth and then simulating the flexspline bending after each change to see how they fit together. But it could be greatly sped up by writing a program to automate the bending simulation step, so you only edit the vertex positions of one half of each tooth and get a real-time view of the simulated engagement.
Hello there, we found ur project so promissing to work with and currently would love to assit you with our custom services(PCB(A), CNC, 3DP, etc), is there any way that we could reach you out?(PCBWay Luz)
