Method and apparatus for fine machining with spark erosion using a wire electrode
US5852268A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 1996 |
| Grant date | Dec 22, 1998 |
| Priority date | — |
| Expiry date | May 9, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H7/16
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of and a spark erosion apparatus for fine machining by spark erosion of a workpiece (2) with a wire electrode (1) eliminates very efficiently process interruptions caused by short circuits, such that at least one gap parameter is continuously monitored for the purpose of detecting a short circuit; when a short circuit is detected, the forward motion of the electrode (1) is arrested at the point (K) where the short circuit occurred; if the short circuit persists, the electrode (1) is moved away from the workpiece (2) to an intervention point (M)--in a direction perpendicular to the path (6) used for trim cutting; at the intervention point (M), one or several measures to eliminate the short circuit are executed once or several times; and after it has been detected that the short circuit is eliminated, the electrode (1) is moved back to the point (K) where the short circuit occurred, whereafter normal machining continues.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.