Integrated Design Improvements in a PLA-Based Service Robot: Focus on Sensor Placement, Motor Selection, and Load Distribution

Abstract

Modern technological innovations continue to evolve, notably in the restaurant service sector, where robot waiters serve as substitutes for human servers. These robots enhance operational efficiency by allowing customers to place orders and receive food directly through an autonomous interface using line-following technology with infrared and ultrasonic sensors to detect obstacles. This research focuses on the design and manufacturing of a servant robot using a 3D printing method with PLA (Polylactic Acid) filament as the primary material. This approach offers a more precise, efficient, and cost-effective production process. PLA is a biodegradable thermoplastic used in fused deposition modeling (FDM) due to its ease of processing and mechanical strength . The robot aims to assist restaurant operations in food delivery and order placement, contributing to service automation. Ultimately, this study seeks to provide practical solutions for modernizing restaurant services and serve as a model for similar implementations in various industrial fields. Keywords: Servant Robot, 3D Printing, PLA Filament, Line Following, Ultrasonic Sensor, Restaurant Automation