Wire electric discharge machining apparatus
US4992640A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1990 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Jan 25, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H11/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A wire electric discharge machining apparatus comprises a tank having an opening at its one side surface, which is movable in a two-dimensional plane, a shielding body having a through hole, which is in slide-contact with the side surface having the opening of the tank so as to close the opening, an arm which has first and second ends, at least one of which is fixed to a machine body and the other is extended into the tank through the through hole and the opening, and which supports in the tank a wire guide for guiding a wire electrode to a workpiece placed in the tank, an enclosure member capable of expansion and contraction in response to a relative movement of the tank to the arm, the enclosure member having both ends sealingly connected to the circumferential portion of the through hole of the shielding body and the machine body respectively, and a working liquid supplying device for supplying a working liquid to the tank through a space formed between the arm and the enclosure member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.