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Fibonacci-compliant finger design.
1Production and Mechanical Design Department, Port Said University, Port Said - Egypt.
The International Journal of Artificial Organs
|October 30, 2016
Summary
This study introduces four novel compliant finger designs for affordable prosthetic and robotic hands. Utilizing Fibonacci series parameters and compliant mechanisms, these single-part fingers offer reduced complexity and cost for practical applications.
Area of Science:
- Mechanical Engineering
- Robotics
- Biomimetics
Background:
- Prosthetic and robotic hands require cost-effective and controllable designs.
- Existing designs often face challenges with complexity and manufacturing costs.
Purpose of the Study:
- To present four distinct mechanical designs for compliant fingers.
- To address the need for commercially viable components for prosthetic and robotic hands.
Main Methods:
- Developed single-part compliant fingers using compliant mechanisms.
- Geometric parameters were based on the Fibonacci series.
- Designed fingers with 2 or 3 joints and degrees of freedom, using circular flexure hinges.
Main Results:
- Finite Element Method (FEM) analysis verified joint range of motion.
- Finger tip trajectories were defined for each configuration.
- Designs with multiple flexure hinges exhibited minimal stress.
Conclusions:
- Introduced affordable, single-element compliant finger designs.
- Hypothetical design variables derived from the Fibonacci series offer a simpler design approach.
- Identified specific applications for each finger design in prosthetics and robotics.
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