EDM drilling of low angle holes
US5313038A · kind A · utility
10Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1992 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Dec 22, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D5/20
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Low angle air directing slots in the tip of an airfoil are produced by forming an elongated electrode by forming notches on opposite sides of the electrode and performing electric discharge machine with the electrode. During machining the electrode is oriented and fed at an acute angle with respect to the surface of the airfoil tip to form an opening, and then rotating the electrode to a position increasingly perpendicular to the surface of the airfoil tip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.