Method and apparatus for discharge machining
US4431897A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 4, 1981 |
| Grant date | Feb 14, 1984 |
| Priority date | — |
| Expiry date | Sep 4, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H9/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Discharge machining for machining a workpiece in a tapered configuration by applying electric current to the workpiece and the machining electrode, and moving the electrode relative to the workpiece in a main machining direction and also in a direction substantially perpendicular thereto. The electrode is initially advanced relative to the workpiece in the main machining direction to a predetermined position or depth. The electrode is then moved relative to the workpiece in a direction perpendicular to the main machining direction while retracting the electrode. When the machining gap is lowered, the electrode is moved toward the center of the circulating locus of the electrode, and thus a shortcircuit between the electrode and the workpiece can be prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.