Negative deflection flexible meshing type gear device having passing tooth profile with maximized tooth height
US6526849B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 2000 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Jan 31, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19949
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A flexible meshing type gear device includes a rigid internal gear, a flexible external gear and a wave generator, wherein the flexible external gear includes a cylindrical body and external teeth formed on the outer surface of the cylindrical body. The basic tooth profile of the flexible external gear having a flexing coefficient of smaller than 1 is given the shape of a convex arc, and a normal at the inflection point of the movement locus described by the center of the convex-arc tooth profile relative to the teeth of the rigid internal gear and an evolute of the locus are newly introduced, thereby clarifying the interference limit of the tooth profile and thus enabling maximization of the tooth height of the concave tooth profile portion of the rigid internal gear and the convex tooth profile portion of the flexible external gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.