A Further Study on High-Contact-Ratio Spur Gears in Mesh with Double-Scope Tooth Profile Modification

The article "A Further Study on High-Contact-Ratio Spur Gears in Mesh with Double-Scope Tooth Profile Modification" appeared in the November/December 2008 issue of Gear Technology.

Summary
This paper will demonstrate that, unlike commonly used low-contact-ratio spur gears, high-contact-ratio spur gears can provide higher power-to-weight ratio, and can also achieve smoother running with lower transmission error (TE) variations.

Keywords
high contact ratio, spur gears, HCR, profile modification, transmission error

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