Main Advantages of Non-Involute Spur Gears


Identifies scuffing as the main cause for limiting gear durability in highly loaded and high speed working gears. Notes that the principal way to avoid scuffing of tooth flanks is to apply an oil film of sufficient thickness between the mating flanks. Asserts that the shape of the flanks determine the curvature radius and sliding velocity. In turn, the curvature radius and sliding velocity decisively affect the forming of the oil film between flanks. Proposes that by shaping the line of action properly results in better gear flank shapes and improved durability.
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