Abstract:
This thesis proposes robot have increasingly replaced humans for many job, including 24 hour work, routine task, and dangerous jobs. However, the robot operating system has high power consumption in many processes. This has led to energy efficiency being the main focus. The thesis has opted to build a robot with high strength, light weight, and low power consumption by reducing the weight of its components. Presently, we know that the structure of most robots in the world is made of metals, composite materials and plastics. In this thesis, to design the mechanical structure of robot arms with three different materials (cast iron, aluminum, and polyamide) using the finite element method to analyze and evaluate the possibilities of these materials. The dynamic load, power consumption, and mechanical characteristics were compared. It was found that polyamide could help lighten the weight by 40% and increase energy efficiency along with average energy savings 68.8%. Although polyamide is particularly easy to find, cast iron is stronger than polyamide.