Method and apparatus for wire feeding in a wire-cut electroerosion apparatus
US5340958A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1993 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Jul 29, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H7/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A wire feeding device for a wire-out electroerosion apparatus comprising a movable table (21) on which one of two clamps (35,45) for clamping a wire in use (2a) and a new wire (2b) from a spare bobbin, respectively, is provided. When the bobbin on which the wire in use is almost empty, one of the clamps (35) is moved into position opposite the other clamp (45) to thereby present a sheared end of the wire in use and a leading end of the new wire into abutting relationship. A welding circuit (80) joins the abutted wire ends whereby the joined wire may be smoothly fed past the various wire guides and into the machining slit formed in the workpiece, whereby continuous machining operations may be performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.