Electrical discharge machine apparatus for reverse taper bores
US7964817B2 · kind B2 · utility
5Cited by
24References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 2007 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Aug 29, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H2200/20
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electrical discharge machining apparatus having a wire electrode and a guide system for machining reverse-taper bores in a workpiece, particularly cone-shaped bores. A guide body near the workpiece stabilizes a first portion of an electrode and a second portion of the electrode extends from the guide body terminating in a working tip. As the guide body is wobbled about the longitudinal axis of a desired workpiece bore, the electrode is advanced and the working tip of the electrode erodes progressively larger closed curves in the workpiece, resulting in a reverse taper bore in the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.