Method of making powder metal helical gears
US5659955A · kind A · utility
Inventor
Key dates
| Filing date | Jan 21, 1994 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Jan 21, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49471
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method includes the steps of compacting powder metal to form a powder metal blank, and forming gear teeth on the powder metal blank by rolling the powder metal blank between rolling dies rotating about parallel axes. The step of forming gear teeth on the powder metal blank by rolling includes the steps of rotating the rolling dies about parallel axes and maintaining the distance between the parallel axes constant during forming of the gear teeth on the powder metal blank. Powder metal gears having 45.degree. helical gear teeth are cold rolled. Herringbone gears and pinion gears are made with the 45.degree. helical powder metal gears.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.