Method and generator for electrical discharge machining
US7812277B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 28, 2006 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | Jul 14, 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 a generator for generating a time sequence of discharge pulses for EDM machining wherein a pulse capacitor (22) for generating the discharge pulse is charged with a charging voltage (U_chrg) and then discharged into the spark gap. The pulse capacitor (22) after being discharged is recharged with a charging voltage (U_chrg) having the same polarity as that of the residual voltage (U_end) remaining at the pulse capacitor (22) after its discharge. Thereafter, the pulse capacitor (22) is discharged with a discharge pulse into the spark gap, wherein the polarity of the discharge pulse is independent of the polarity of the charging voltage (U_chrg) at the pulse capacitor (22) after its recharge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.