Abstract
Application of polymer gears is increasing due to some of their inherent properties. Nowadays, polymer gears are replacing metal gears in various applications. They have less weight, lower inertia, and run much quieter in comparison to metal gears. In this work, the transmission efficiency of polymer gears running at different speed (600, 800, 1000, and 1200 rpm) and torque (0.8, 1.2, 1.6, and 2 Nm) are studied. Three different thermoplastic materials viz. Acrylonitrile Butadiene Styrene (ABS), Polyoxymethylene (POM), and High-Density Polyethylene (HDPE) are used to fabricate polymer gears using injection molding machine. Gears are operated for 1.2 × 105 cycles to investigate the transmission efficiency. The experiments are carried out using a power absorption type polymer gear test rig. It is concluded from this work that transmission efficiency of these polymer gears is significantly affected by torque. Speed has less significant effect on transmission efficiency of polymer gears.
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