Design And Fabrication Of 3d Printed Elleptical Trammel Mechanism

Abstract

This Project Explores The Design And Fabrication Of An Elliptical Trammel (Trammel Of Archimedes) Using Fused Deposition Modeling (FDM) To Demonstrate The Inversion Of A Double Slider-crank Chain. The Mechanism, Which Translates Constrained Linear Motion Into A Precise Elliptical Trajectory, Was Digitally Modeled Via CAD Software With A Specific Focus On Parametric Geometry, Including A Semi-major Axis Of 136.5 Mm And A Semi-minor Axis Of 84 Mm. The Components Were Fabricated Using Polylactic Acid (PLA) On A QIDI TECH Q1 Pro 3D Printer, Utilizing A 0.2 Mm Layer Height And 20% Grid Infill To Balance Structural Rigidity With Production Efficiency. Critical Attention Was Paid To Dimensional Tolerances (0.2 Mm To 0.4 Mm) To Ensure Smooth Slider-to-track Interaction And Minimize Mechanical Backlash. The Final Assembly, Completed In 2 Hours And 29 Minutes, Validates The Effectiveness Of Additive Manufacturing For Rapid Prototyping And Low-cost Educational Tools. This Work Serves As A Functional Benchmark For Kinematic Analysis And Illustrates The Practical Application Of 3D Printing In Mechanical Engineering Education.

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