Electrical discharge machining assemblies and methods for using the same
US11904397B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2022 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Feb 6, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H9/001
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
EDM assemblies mount on a machining surface and discharge rotating sub-electrodes against the surface. The sub-electrodes can also revolve about another shared axis while discharging. Rotation and revolution may be achieved with planetary gears fixed with the sub-electrodes and meshing with a stationary sun gear. Several sub-electrodes can be used in a single assembly. Downward movement of the sub-electrodes from a central shaft on the mount allows several inches of the surface to be machined. Assemblies are usable in a nuclear reactor during a maintenance period to machine a hole for a replacement manway cover underwater in the flooded reactor. The differing rotational movements and vertical movement can be independently controlled with separate motors in the assembly. Power and controls may be provided remotely through an underwater connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.