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Author(s):

M Rajesh | S MD Shahid
Keywords:

Elliptical Trammel, Trammel Of Archimedes, Double Slider-crank Chain, 3D Printing, FDM, Mechanical Linkage, Kinematics
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.