Worm reduction gear and steering system

A worm reduction gear satisfies following relational Formula (1) and Formula (2): 3 ‰¥ D 2 / D 1 ‰¥ 1.7 0.1 ° ‰¤ ± ˆ’ ² ‰¤ 0.5 ° where D1 is an outside diameter of a worm, D2 is an outside diameter of a hob for cutting a worm wheel to form tooth spaces, and ± is a pressure angle of the worm wheel an...

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1. Verfasser: Kikuchi Arata
Format: Patent
Sprache:eng
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Zusammenfassung:A worm reduction gear satisfies following relational Formula (1) and Formula (2): 3 ‰¥ D 2 / D 1 ‰¥ 1.7 0.1 ° ‰¤ ± ˆ’ ² ‰¤ 0.5 ° where D1 is an outside diameter of a worm, D2 is an outside diameter of a hob for cutting a worm wheel to form tooth spaces, and ± is a pressure angle of the worm wheel and ² is a pressure angle of the worm at an intermeshing pitch circle of the worm and the worm wheel.