Wire electrode positioning control device of electrical discharge wire-cutting machine
US5268551A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1992 |
| Grant date | Dec 7, 1993 |
| Priority date | — |
| Expiry date | Apr 27, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H7/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
While a workpiece is processed, a wire electrode is fed in the first direction by a drive roller from a wire bobbin energized in the second direction which is the reverse direction of the first direction. A brake roller installed between the wire bobbin and the drive roller supplies the wire electrode installed between the wire bobbin and the drive roller with additional tension. If the wire electrode is broken, the wire bobbin winds up the broken wire electrode. A wire end detecting sensor detects the end of the broken wire electrode when the wire electrode is wound up so that the end of the wire is stopped at a predetermined position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.