Method for drilling a printed circuit board
US5066171A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1989 |
| Grant date | Nov 19, 1991 |
| Priority date | — |
| Expiry date | Mar 17, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/5623
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a method of and an apparatus for drilling a hole in a workpiece, a pressure foot associated with a drill is moved into contact with the workpiece, and a drill bit associated with the drill is moved from a drill-starting position into the workpiece, toward the drill-starting position and again into the workpiece while maintaining the pressure foot in constant contact with the workpiece. The drill is reciprocally fed by a plurality of times under the pressure of the pressure foot acting upon the printed circuit board. In either of the method and the apparatus, a hole with a high aspect ratio can be formed in a workpiece made from a thin, flexible material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.