Method and generator for electrical discharge machining
US7816620B2 · kind B2 · utility
2Cited by
12References
51Claims
0Family size
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Key dates
| Filing date | Jul 31, 2006 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Jun 28, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H7/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method and generator for generating a time sequence of EDM pulses having a predefined ignition voltage for electrical discharge machining. An AC voltage is generated from a DC voltage, furnished by a bipolar current source. The AC voltage is applied to an isolating transformer disposed between the bipolar current source and the spark gap. A first pulse capacitor is charged by the bipolar current source to a voltage corresponding to the ignition voltage. The ignition voltage provided by the isolating transformer is switched with a selected polarity to the spark gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.