For the first week of my internship, I started working on CAD design for the robotic arm. I learned a program called SolidWorks, which allowed me to create 3-d models of parts and assemblies, then print them out of a 3-d printer. I practiced my skills by drafting various parts I found around the workshop, like motors and screws. After I had become familiar with the CAD program, I started working on a rotation joint for the robotic arm. I created a chamber inside the arm that would hold the motor. Then, I created a larger chamber holding an internal spur gear. The motor chamber can be placed inside the gear chamber, allowing it to rotate around it and simulate human arm rotation. After I had designed both the parts, I put them together into an assembly on SolidWorks. Next work, I'll hopefully be able to print the parts out and test their efficiency.
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