Method and apparatus for determining the location of core-generated features in an investment casting
US7296615B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2004 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | May 6, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C9/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A secondary datum scheme is used for identifying the location of the core-produced internal geometry of hollow investment cast metal parts that are made using a free-floating core design for implementing complex internal structural features. A set of datum pads are cast on a removable portion of the core print out to provide the secondary reference system. This secondary reference system precisely establishes the location of the core-produced internal geometry of the part exclusive of any fixed external primary datum structure/system so that, for example, precision machining and gauging may be performed upon such internal features during subsequent fabrication steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.