Electric discharge machining apparatus of wire-cutting type
US4783583A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1987 |
| Grant date | Nov 8, 1988 |
| Priority date | — |
| Expiry date | Mar 18, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H7/102
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The electric discharge machining apparatus of the wire-cutting type comprises a wire-treating unit (48) movable in the horizonal direction relative to an upper wire guide member (12) between the upper wire guide member and a work table (10) to traverse a wire electrode (W) extending downward from a wire passage (13) of the upper wire guide member. The wire-treating unit has a base block (55) and a movable block (56) that can approach to and separate from the base block to define a slit (60) and a nozzle hole (61) that can be opened and closed between the two blocks. The slit extends in the horizontal moving direction of the wire-treating unit to receive the wire electrode therein. The nozzle hole can be connected to the lower end of the wire passage of the upper wire guide member, and the nozzle hole is constructed so that a spray liquid supplied into the wire passage of the upper wire guide member can be injected into a wire passage (15) of a lower wire guide member (14). The wire-treating unit comprises a wire-detecting device (66) for detecting the end of the wire electrode between the base block and the movable block and wire-cutting means (62) for cutting the wire electrode be…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.