Method of spin forming an automotive wheel rim
US7228629B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Nov 10, 2003 |
| Grant date | Jun 12, 2007 |
| Priority date | — |
| Expiry date | Jul 3, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49531
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a method of manufacturing a three piece aluminum wheel assembly comprising the steps of providing a pair of circular blanks made of a heat treatable alloy to be formed into preforms of a general shape. The preforms are subjected to a quenching step in an unconstrained condition to allow for natural thermal deformation during the quenching operation. The as quenched preforms are then subjected to a first forming operation using spin forming to remove the effects of the thermal deformation in the preform, followed by a second forming step using spin forming to shape the component to its desired final shape. The components are then exposed to precipitation heating and finishing to yield the final product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.