reality labs humanoid arm
JUN 2025 > SEP 2025
Designed a modular humanoid forearm housing for tendon-driven robotic fingers, integrating compact pulley assemblies, removable enclosures, and magnetic aesthetic panels for rapid maintenance and prototyping.
> Designed dual pulley modules mounted back-to-back inside sliding fin assemblies, enabling quick removal for re-threading or finger actuation testing.
> Added magnetically attached exterior plates.
> Modeled the mechanical interfaces between the forearm, wrist, and servo assemblies, designing for proper torque transmission and alignment under load.
> Modeled in Fusion 360 and applied DFM/DFA principles to simplify 3D-printing tolerances for the tendon routing components.
> Used ±0.2 mm tolerance zones for consistent motion across multiple 3D-printed parts.
> Ran torsional FEA applying counter-rotation at forearm ends; optimized rib geometry reduced peak stress 38% and angular deflection to 0.7°.
> Enabled full finger actuation cycles up to 20 N fingertip force.