Cutting thin metal sheet with an electron beam
US4356377A · kind A · utility
11Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1981 |
| Grant date | Oct 26, 1982 |
| Priority date | — |
| Expiry date | Feb 19, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K15/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Amorphous metal ribbon and thin conventional magnetic material is fully cut through by an electron beam and has no or minimal bead on the edge. The ribbon is bent around a roller while under the electron beam and centrifugal force removes molten metal from the cut. An alternative method is to partially cut through and mechanically deform the material to break the thinned section metal bridges remaining below the cut. Motor laminations so cut have negligible increase in thickness and stack compactly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.