Gear teeth are the projecting elements on gears that mesh with other gears to transmit torque and motion in mechanical systems.
Gear teeth are precisely engineered projections on the periphery of gears that engage with corresponding teeth on mating gears to transfer rotational motion and power. They convert input torque and speed into desired output characteristics through controlled meshing, with geometry defined by parameters like module, pressure angle, and tooth profile to ensure smooth, efficient power transmission with minimal backlash and wear.
诱因 → 失效模式 → 工程缓解
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20° is the most common pressure angle for modern gear teeth, offering a balance of strength, smooth operation, and reduced undercutting compared to older 14.5° designs.
The involute tooth profile ensures constant velocity ratio, smooth engagement, and tolerance to center distance variations, while cycloidal profiles offer higher strength but are less common due to manufacturing complexity.
Common failures include pitting from surface fatigue, bending fatigue at the tooth root, scuffing from inadequate lubrication, and wear from abrasive particles or misalignment.
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