MIE.03 – Scissors Lift

This project addresses the design, evaluation, and development of a precision-controlled scissor lift, an essential instrument in various applications such as optics tables, high-speed photography, and laser machining. Given the diverse application range, it’s imperative that these lifts meet stringent specifications for stability and accuracy. This study initiates with an exploration of the code requirements set by various agencies and proceeds to a comparative analysis of existing scissor lift devices in the market. This comparison encapsulates multiple criteria: dimensions, weight, accuracy, control methodologies, applications, and price point. Moreover, a comprehensive review of all pertinent patents is undertaken to ensure the innovation stands on firm intellectual ground. Based on these analyses, a select system is chosen as a prototype model, and a detailed CAD and ANSYS design package is developed. Crucially, the design accounts for the non-linear loading observed as the scissor lift operates. The culmination of this work is the fabrication of a working prototype with the capability to lift 10 pounds with an accuracy of 0.1 inches in placement. The prototype leverages modern technology, using either a stepper or servo motor for precise incremental motion and is controlled via an Arduino-based system. The paper underscores the significance of 3D printing, a sturdy metal base, and a sophisticated control system in achieving this feature.