Method of electrochemically machining workpieces
US5904831A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1997 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | Sep 4, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H9/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method of forming one or more through-holes in a metal workpiece, such as shaving foils or shaving combs, by means of an electrochemical machining apparatus (ECM apparatus). To this end, the method is characterized in that, during machining, the workpiece is provided on a substrate of an electroconductive, electrochemically inert material, such as a noble metal (alloy), in particular a noble metal (alloy) which is predominantly composed of Pt. Preferably, the workpiece is clamped onto the substrate. By virtue of said measures, rounding of the edges between the holes formed and the surface of the workpiece, which is clamped down on the substrate during machining, is reduced substantially. This has a favorable effect on the formation of sharp cutting faces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.