Internal mandrel and method
US8631671B2 · kind B2 · utility
1Cited by
12References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2011 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | Dec 12, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49805
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and system for forming a part from a workpiece including a hollow portion, using a mandrel and a conventional press such as a stamping press includes filling the hollow portion of the workpiece with a mandrel material and transforming the mandrel material to form a mandrel. The mandrel material is removable from the formed part and may be recycled to form a mandrel for another workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.