Automatic wire threading method
US4999473A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1989 |
| Grant date | Mar 12, 1991 |
| Priority date | — |
| Expiry date | Sep 19, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H7/102
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An automatic wire threading method for a wire-cut electric discharge machine is provided, which is capable of permitting a wire electrode to pass through a fine-diameter machining start hole using of a simple arrangement. After an upper wire supporting portion on the wire supply side of a wire transportation system is moved, along with a cut wire, toward a workpiece disposed in alignment with the upper wire supporting portion, so that the leading end of the wire is in a machining start hole, the upper wire supporting portion is moved away from the workpiece, while keeping the wire end in the hole, and the wire is then transported to the wire delivery side of the wire transportation system, thus completing wire threading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.