Second Prototype:
The second prototype was the intended final prototype, however the mechanical function of the mechanism did not give the desired outputs. Therefore, changes were made, and the final design found.
What didn't work on Prototyp Prototype 2:
- Design called for a link to be attached to the thumb to connect to the lower slider
- Thumb link did not follow the thumb movement well
- Minimal movement of slider link with maximum thumb movement, not allowing the mechanism to be fully opened
- Mechanism design would also to be changed if to be placed on another hand since it was only designed to be pulled
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Second Prototype Model
Second Prototype Machined Picture