Sealing apparatus used in a wire cut electric discharge machine
US6583376B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2001 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | May 4, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H7/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A wire cut electric discharge machine that includes a machining tank storing a machining fluid, an upper arm disposed at an upper portion of the machining tank, a lower arm inserted into the machining tank, a wire electrode extending between the upper arm and the lower arm for performing electric discharge machining on a workpiece placed fixedly in the machining tank, a support member mounted to the machining tank for supporting the lower arm such that the lower arm is slidable relative to the machining tank and sealed from the machining tank, and an O-ring interposed between the lower arm and the support member. The support member has a groove formed all around its inner circumference, and the O-ring makes contact with sidewalls of the groove. Accordingly, even when the outside diameter of the O-ring varies depending on an error in diameter of the lower arm, contact between the sidewalls and the O-ring remains unchanged and fluid-tightness can be reliably ensured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.