Automated Linear Sampling System – Mechanical & Mechatronic CAD Assembly

Mechanical and mechatronic system designed for automated positioning of a sampling hose across multiple collection stations. The system was developed for an environmental sampling application where condensate produced by an air collection system must be periodically directed into different containers. Five collection stations are used sequentially, with the sampling hose positioned over each container for a defined period. I designed the mechanical assembly around a motor-driven linear positioning system. A stepper motor and belt transmission move a carriage along parallel guide rods, allowing the sampling hose to travel horizontally between the different collection positions. The assembly also incorporates two end-of-travel limit switches for mechanical position referencing and safe travel limits. The CAD model was developed as a complete mechanical assembly, considering the integration and positioning of the motor, transmission, linear guides, moving carriage, structural supports, sensors, fasteners and sampling interface. Key design aspects: Complete mechanical assembly design Linear motion system Stepper motor integration Belt-driven transmission Dual linear guide system Moving carriage design Limit switch integration Multi-position sampling concept Mechanical component integration Functional prototyping Design for manufacturing and assembly This project demonstrates the development of a functional mechatronic mechanism from an application requirement to a complete CAD assembly, integrating mechanical motion, actuation and position sensing.