Gear tooth smoothing and shaping process
US6170156A · kind A · utility
29Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1999 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Mar 24, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49758
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The fatigue life of gears, for example, the gears in a sun gear-planetary gear set, is markedly improved by forming the respective gears by ordinary manufacturing practices and then running each new gear against a durable, but expendable, dummy of its counter-gear. The teeth of a dummy sun gear may be suitably hardened and used under suitable loads to minimally reshape the teeth of a plurality of newly-made pinions so that they are smoothed and better fit an intended sun gear. Similarly, the roughened teeth of a hardened or hard coated sun gear can be smoothed by running it for a few rotations against an expendable pinion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.