Process for the curvilinear formation of holes
US4769118A · kind A · utility
12Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 13, 1987 |
| Grant date | Sep 6, 1988 |
| Priority date | — |
| Expiry date | Jul 13, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05B2220/302
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process is described for the production of holes having curvilinear paths in engineering components. The process comprises the steps of producing relative motion along a curvilinear path between a workpiece in which it is desired to form a curved hole and a drill bit wherein the drill bit comprises a curved delivery tube of an ECM apparatus, the curved tube passing through an aperture in a guidance member which is positioned adjacent the workpiece, the aperture length being less than the diameter of the tube. An example is described of the production of curved holes in a gas turbine engine blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.