Method and apparatus for electrical discharge machining with intermittent electrical measuring
US6252191A · kind A · utility
10Cited by
10References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1998 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Dec 4, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H7/065
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
EDM according to the present invention involves an intermttent type of operation between erosion pulses and measurement pulses in order to circumvent an interfering self-control effect of an electrode during fine machining. To achieve shorter processing times, higher precision and better reproducibility, the method and apparatus determine with an electrical measurement the amount that an electrode is in contact with a workpiece during a measurement time that erosion has been interrupted. A pulse duty factor is then obtained from the contact amount to control further processing via, for example, the duration of the erosion pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.