SUN GEAR

PROBLEM TO BE SOLVED: To provide a sun gear which has been proposed by noting that a Hertz contract stress at a meshing pitch point of tooth surfaces is reduced, and which is constituted of a free-form surface maximizing the minimum curvature radius of a tooth surface in the vicinity of a meshing pi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OOKA MITSUSHIGE, NAGATA KENJIRO, KAWASAKI YOSHIKI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a sun gear which has been proposed by noting that a Hertz contract stress at a meshing pitch point of tooth surfaces is reduced, and which is constituted of a free-form surface maximizing the minimum curvature radius of a tooth surface in the vicinity of a meshing pitch point.SOLUTION: A sun gear is characterized in that: the addendum side of a tooth surface 12 is formed of an involute-helicoid curve surface; a free-form surface formed of a cycloid-helicoid curve or an arcuate helicoid curve for maximizing a curvature radius is linked to the vicinity of a meshing pitch point P continuing to the curve surface; and the involute helicoid curve links to the dedendum side continuing to the free-form surface.