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Open-Bionics / Brunel

Design files relating to the Brunel Robotic Hand
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Align hooks and trenches on ligaments #27

Closed JonathanRaines closed 7 years ago

JonathanRaines commented 7 years ago

At the moment the hooks on the ligaments must stretch 1 mm either side of the knuckle to reach the hooks on the phalanges. This pre-tension helps with lateral stability. There are also ridges on the underside of the ligament that slot into trenches. They are half way between the joint and the hook. At the moment, they are 0.5 mm misaligned. The idea is that stretching the ligament to the hook aligns the trench with the ridge. However, this means the ridge has to be located under tension. It might be better to have all the hook and trench fit in a relaxed state, then to apply the tension.

JonathanRaines commented 7 years ago

Aligned. It was actually a very small change so didn't make too much difference. The ligament is pushed into place when the top cover is bolted on.