EDM using two separate dielectric fluids and a system for maintaining segregation of the fluids
US4628170A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1982 |
| Grant date | Dec 9, 1986 |
| Priority date | — |
| Expiry date | Feb 26, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/85954
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In an electric discharge machining method, a workpiece is subjected to an electric discharge machining at a high working speed using water as the dielectric fluid, and after this, the workpiece is finish-machined using oil as the dielectric fluid. An apparatus for carrying out the method has a feeding system for selectively feeding water or oil as the quenched surface of a workpiece is removed by using water as a dielectric fluid in electric discharge machining (EDM) the dielectric fluid to a machining gap between the workpiece and a tool electrode and a returning device for selectively returning the dielectric fluid used in the machining gap to an oil tank or a water tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.