Pulse and gap control for electrical discharge machining equipment
US10259062B2 · kind B2 · utility
2Cited by
18References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 4, 2014 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Jan 24, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H7/26
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of detecting the state of a gap between an electrode and a workpiece in electrical discharge machining (EDM) equipment, the method including the steps of: prior to generating an electrical discharge to remove material from the workpiece, applying a low energy checking pulse across the gap during a checking phase period (Tc); and inferring a short circuit gap state when the gap current exceeds a current threshold (IT).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.