The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 2013
Filed:
Apr. 07, 2008
Yuanfeng Luo, Shanghai, CN;
Garth Nelson, Ballston Lake, NY (US);
Ugo Cantelli, Florence, IT;
Renwei Yuan, Shanghai, CN;
Yimin Zhan, Shanghai, CN;
Yuanfeng Luo, Shanghai, CN;
Garth Nelson, Ballston Lake, NY (US);
Ugo Cantelli, Florence, IT;
Renwei Yuan, Shanghai, CN;
Yimin Zhan, Shanghai, CN;
General Electric Company, Niskayuna, NY (US);
Abstract
A rough machining method for machining a channel in a workpiece includes the steps of: provide a power supply to energize one of a workpiece and an electrode as an anode and the other as a cathode; advance the electrode into the workpiece from a first start point to travel a first toolpath, so as to generate a first annular groove with a first core connecting with the workpiece; advance the electrode into the workpiece from a second start point to travel a second toolpath, so as to generate a second annular groove with a second core connecting with the workpiece, wherein the second annular groove intersects with the first annular groove and the first and the second cores are at least partially broken and disconnected with the workpiece upon intersecting of the first and the second annular grooves; and circulating a cutting fluid cross a working gap between a working face of the electrode and the workpiece.