Method for setting gear tooth profile in flat wave gear...

Details Method for setting gear tooth profile in flat wave gear... Method for setting gear tooth profile in flat wave gear...

2008-11-19

2011-10-04

Holmes, Justin (Department: 3655)

Machine element or mechanism

Gearing

C475S180000

Reexamination Certificate

active

08028603

ABSTRACT:
In a flat wave gear device in which a flexible externally toothed gear and the rigid internally toothed gear have the same number of teeth, an arcuate tooth profile is imparted to a flexible externally toothed gear, a contact point C between tooth profiles of a flexible externally toothed gear and a D-side rigid internally toothed gear is determined from an arc center A of the arcuate tooth profile of the flexible externally toothed gear and from a momentary center S of relative movement between the gears, and a main part of a tooth profile to be formed in the D-side rigid internally toothed gear is calculated based on the contact point. The tooth profile of the D-side rigid internally toothed gear can be accurately designed; therefore, meshing between the gears can occur with zero backlash, ratcheting torque can be increased, and continuous meshing can occur across a wide range of the movement locus of the tooth profiles of both gears. The load capability of the flat wave gear device can accordingly be increased.

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