Gear wheels roll formed from powder metal blanks
US7137312B2 · kind B2 · utility
6Cited by
43References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2001 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Jun 26, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12021
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method is disclosed for the manufacture of gear wheels having two axially adjacent gears (4,6) thereon. A blank is prepared with the two gears crudely formed thereon by compressing and sintering a shaped mass of substantially metal powder. The blank is then mounted for rotation about a first axis, and the gears are roll-formed on the blank by rotating the blank in meshing engagement with respective dies (10,12) mounted for rotation about second and third axes substantially parallel to the first axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.