Spring 2017 Prosthetic Arm: Attachment Module Test
The Robot Company | CEO Professor Gary Hill
Blog Post created by Project Manager | Bianca Esquivel
Project Test Executed by Mission, Systems, and Test Engineer | Phuong Tran and Manufacturing and Design Engineer | Cedric Yannick Mbetga
Table of Contents
Preliminary Information
Test Objective
Purpose: In order to meet the following requirement
- L1-1 – Attachment
- L2-1-Mass Management
- L2-1-2- No over shoulder strap
The module shown in figure below will be modeled following the patent shown by the pictures to the right
However the ¼ metal rod will be purchased
Aim: verify that the designed and printed humerus cuff system can be properly attached.
Materials
Metal Rods
3mm Gold PLA
3D Printer
2.5 pound weight
Test Set Up
Push the metal rods into the PLA golden cuff pieces that hold on the humeral bone. Place the cuff on the humeral bone of an individual and tie a 2.5 pound weight to the cuff to see if it can sustain this mass while still holding on to the arm.
Humeral Cuff with 2.5lb Weight
Results
The Humeral Cuff was crafted and proven to be able to stay attached to the arm while carrying a 2.5 lb weight.
Humeral Cuff with 2.5 lb Weight 2
Conclusion
Since the Humeral Cuff can withstand the weight equivalent of the prosthetic hand and prosthetic arm without it’s grasp on the arm slipping, then it is able to be used as an arm attachment module instead of an over the shoulder strap system that was used last semester.